Device holder and solar powered charger unit for smart device cooler

Abstract

A solar powered cooler for a smart device such as a smartphone or smart tablet is provided, optionally with a device holder and a solar powered charger unit. The cooler may include an upper fan casing, an optional bottom fan casing, smart device holder, and an air passage formed between the upper fan casing and the smart device holder. The heat dissipation structure of the smart device holder for holding a smart device is disposed in the close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling (forced convection) and passive cooling (natural convection) so as to enhance the heat dissipation performance of the smart device.

Claims

1. A solar powered cooler for a smart device, comprising: an upper fan casing; a bottom fan casing; a smart device holder for holding the smart device; one or more cooling fans effective to draw air into an air passage formed between the upper fan casing and the smart device holder, thereby forcing the air to flow along a substantially vertical direction toward a bottom surface of the smart device in a substantially horizontal orientation; and one or more solar panels for harvesting solar energy and delivering electric power to the one or more cooling fans, the one or more solar panels connected to the one or more fans via one or more connector cables, wherein the smart device holder has one or more vent holes in conjunction with one or more air flow grooves which are elongated narrow shapes coupled with one or more circular air passage openings incorporated in an upper surface of smart device holder.

2. The solar powered cooler of claim 1, wherein the smart device holder has a construction that allows horizontal air flow over the bottom surface of the smart device by active cooling or passive cooling.

3. The solar powered cooler of claim 2, wherein the upper surface of the smart device holder addresses the active cooling (forced convection) characteristics of smart devices to cool the bottom surface of the smart device by providing active cooling (forced convection) by forcing thermal heat generated by the smart device to escape from the smart device holder.

4. The solar powered cooler of claim 3, wherein the smart device is arranged in a manner such that the air directed toward the bottom surface of the smart device flows horizontally over the bottom surface.

5. The solar powered cooler of claim 2, wherein the upper surface of the smart device holder addresses the passive cooling (natural convection) characteristics of the smart device to cool the bottom surface of the smart device by allowing thermal heat generated by the smart device to escape from the smart device holder by passive cooling when the smart device holder is used as a standalone component.

6. The solar powered cooler of claim 1, wherein the smart device holder is disposed in a close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling (forced convection) and passive cooling (natural convection) so as to enhance a heat dissipation performance of the smart device.

7. The solar powered cooler of claim 6, wherein the air drawn in by the one or more cooling fans may be forced through the air passage and discharged through vent holes in order to cool the bottom surface of the smart device in the smart device holder.

8. A solar powered cooler for a smart device, comprising: an upper fan and charger unit casing; a bottom fan and charger unit casing; a smart device holder for holding the smart device; one or more charger units for charging the power supply for the smart device; one or more cooling fans effective to draw air into an air passage formed between the upper fan and charger unit casing and the smart device holder, thereby forcing the air to flow along a substantially vertical direction toward a bottom surface of the smart device in a substantially horizontal orientation; a solar panel protector cover having a clear plastic window over a solar panel, the solar panel protector cover secured to the solar panel with a snap fastener and insert elements; and one or more solar panels for harvesting solar energy and delivering electric power to the one or more cooling fans and the one or more charger units for charging the power supply of the smart device, the one or more solar panels connected to the one or more fans and the one or more charger units via one or more connector cables.

9. The solar powered cooler of claim 8, wherein the one or more cooling fans and one or more charger units for charging the power supply for the smart device are located between the upper fan and charger unit casing and the bottom fan and charger unit casing with a construction that allows horizontal air flow over a bottom surface of the smart device by active cooling or passive cooling.

10. The solar powered cooler of claim 8, wherein at least one fan of the one or more cooling fans rotates about a substantially vertical axis wherein the smart device holder is disposed in the close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling and passive cooling so as to enhance the heat dissipation performance of the smart device.

11. The solar powered cooler of claim 8, having one or more vent holes and one or more receiving hole for the solar powered charger unit formed in the upper and/or lower fan and charger unit casing in conjunction with one or more air flow grooves which are elongated narrow shapes coupled with one or more circular air passage openings incorporated in the upper surface of smart device holder.

12. The solar powered cooler of claim 11, wherein the smart device holder contains the smart device in a manner such that air directed toward the bottom surface of the smart device flows horizontally over the bottom surface may be forced through the air passage and discharged through the one or more vent holes in order to cool the bottom surface of the smart device in the smart device holder.

13. The solar powered cooler of claim 12, wherein the smart device is attached to the upper fan and charger unit casing by magnetic means.

14. The solar powered cooler of claim 13, wherein the smart device is a smartphone or smart tablet.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of a single fan solar powered cooler for a smart device such as a smartphone or smart tablet, in accordance with the parent case.

(2) FIG. 2 is an exploded perspective view of the single fan solar powered cooler of FIG. 1 with the corresponding smart device holder, in accordance with the parent case.

(3) FIG. 3 is a top view of a single fan solar powered cooler, in accordance with the parent case.

(4) FIG. 4 is a side view of the single fan solar powered cooler of FIG. 1 with the corresponding smart device holder, in accordance with the parent case.

(5) FIG. 5 is a bottom view of the single fan solar powered cooler, in accordance with the parent case.

(6) FIG. 6 is the rear view of the single fan solar powered cooler of s of FIG. 1 with the corresponding smart device holder, in accordance with the parent case.

(7) FIG. 7 is a side sectional view of the single fan solar powered cooler of FIG. 3 with the corresponding smart device holder along cut lines VII-VII, in accordance with the parent case.

(8) FIG. 8 is a condensed exploded perspective view of the single fan solar powered cooler of FIG. 2, in accordance with the parent case.

(9) FIG. 9 is a perspective view of a dual fan solar powered cooler for a smart device such as a smartphone or smart tablet, in accordance with the parent case.

(10) FIG. 10 is an exploded perspective view of the dual fan solar powered cooler of FIG. 9 with the corresponding smart device holder, in accordance with the parent case.

(11) FIG. 11 is a top view of a dual fan solar powered cooler, in accordance with the parent case.

(12) FIG. 12 is a side view of the dual fan solar powered cooler of FIG. 9 with the corresponding smart device holder, in accordance with the parent case.

(13) FIG. 13 is a bottom view of the dual fan solar powered cooler of FIG. 9 with the corresponding smart device holder, in accordance with the parent case.

(14) FIG. 14 is the rear view of the dual fan solar powered cooler of dual fan solar powered cooler of FIG. 9, in accordance with the parent case.

(15) FIG. 15 is a side sectional view of the dual fan solar powered cooler of FIG. 11 with the corresponding smart device holder along cut lines XIII-XIII, in accordance with the parent case.

(16) FIG. 16 is a condensed exploded perspective view of the dual fan solar powered cooler of FIG. 10, in accordance with the parent case.

(17) FIG. 17 is a perspective view of the smart device holder for the single fan solar powered cooler of FIG. 2.

(18) FIG. 18 is a perspective view of the smart device holder for the dual fan solar powered cooler of FIG. 10.

DETAILED DESCRIPTION OF THE INVENTION

(19) Before describing the present invention in detail, it is to be understood that the invention is not limited to specific separation devices or types of analytical instrumentation, as such may vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

(20) In addition, as used in this specification and the appended claims, the singular article forms “a,” “an,” and “the” include both singular and plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a fan” includes a plurality of fans as well as a single fan, reference to a “solar panel” includes a single solar panel as well as a combination of solar panels, and the like.

(21) Furthermore, terminology indicative or suggestive of a particular spatial relationship between elements of the invention is to be construed in a relative sense rather an absolute sense unless the context of usage clearly dictates to the contrary. For example, the terms “over” and “on” as used to describe the spatial orientation of a first item relative to a second item does not necessarily indicate that the first item is located above the second item. Thus, in a cooler that includes a holder placed on or over a smart device, the holder may be located above, at the same level as, or below the smart device depending on the cooler's orientation. Similarly, an “upper” surface of a smart device may lie above, at the same level as, or below other portions of the device depending on the orientation of the device.

(22) In general, then, the invention pertains to units associated with smart devices. The inventive units typically have a small, compact, rectangular design that includes a fan and may be easily stored and transported on one's person, in a brief case or beach bag. The heat dissipation structure of the smart device holder for holding a smart device is disposed in the close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling (forced convection) and passive cooling (natural convection) so as to enhance the heat dissipation performance of the smart device. The smart device holder for holding a smart device to dissipate thermal heat generated by smart device to be released by active cooling (forced convection) and passive cooling (natural convection) forced through the air passages and discharged through the one or more vent holes in order to cool the bottom surface of a smart device in the smart device holder. The passive cooling (natural convection) characteristics of the smart device holder for holding a smart device allows dissipation of thermal heat to cool the bottom surface of a smart device by allowing the thermal heat generated to escape from the smart device holder when the smart device holder is used as a standalone component of this invention in the absence of solar power.

(23) The thermal heat generated by a smart device escapes from the smart device holder by passive cooling (natural convection) when the smart device holder is used as a standalone component of this invention in the absence of solar power.

(24) Smart device users have recognized thermal problems, as many reviews and articles, empirically highlight the smart device overheating issues. Heat, if not handled properly, can not only degrade the processors' performance and damage the battery, but also degrade user experiences, aggravate a thermal regulatory disorder, and pose health threats (e.g., thermal pain, skin burns, skin aging). Overheating problem is well known in the field of electronic devices and various cooling technologies have been proposed (e.g., using proper thermal conductivity materials, dynamic voltage and frequency scaling (DVFS), etc.).

(25) Measurements of the surface temperature of a wide range of smart devices such as Android reference phones (Nexus 5, Nexus 5X, Nexus 6, Pixel, and Pixel 6. iOS phones (iPhone 7, iPhone 7+, and iPhone 8), and Android phones (Galaxy S7 and Huawei P20) by considering representative workloads such as video chatting, video recording, voice calling, gamming, and charging (with and without running applications) have been conducted. These were applications that are often used in our daily lives. It was concluded that the small form factor and light weight requirements of smart devices prevent the adoption of active cooling, such as force air, and smart devices thus mostly rely on passive cooling (natural convection).

(26) Smart devices are comprised of multiple layers of electric components (integrated circuits and wires) with different thermal conductivities that generate heat due to power dissipation and Joule heating. Because of the layers' wide surface area and thinness, heat transfer mostly occurs in vertical directions across multiple layers, while relatively minor transfer occurs in horizontal directions. This means that more heat transfer occurs via conduction than convection, and the air gap between layers acts as an insulator. Overall, the heat generated from a number of heat sources is transferred through the adjacent materials and is finally released to the atmosphere. Typically, the rate of temperature change steadily decreases and reaches the steady-state (called the steady-state temperature).

(27) However, the small form factor and light weight requirements of smart devices prevent adopting active cooling (forced convection) and smart devices thus mostly rely on passive cooling (natural convection). Besides these cooling techniques, thermal management also happens at an electronic component level. Modern application processors (APs) support DVFS and central processing unit (CPU) hot-plug to manage power consumption and protect devices from overheating. A thermal protection mechanism suppresses temperature increase by reducing power consumption via lowering operating voltage/frequency of a CPU, or turning off CPU cores.

(28) The thermal management in some smart devices is carried out by the kernel's thermal engine. This engine monitors CPU temperatures from on-die sensors and controls the temperature by mainly using two algorithms: dynamic control and threshold control. The dynamic control algorithm checks whether the core temperatures exceed the threshold values and determines whether to throttle clock frequency or turn off cores. The threshold values are manufacturer-dependent and set by the threshold control algorithm. Some smart device manufacturers also implement an additional thermal protection mechanism by which a device is shut down when the battery temperature exceeds the threshold (e.g., 68° C.). In practice, device manufactures may configure different thresholds owing to the heterogeneity of temperature sensors and device characteristics.

(29) Thermal concerns are broadly classified as follows: performance degradation, negative user experiences, and health risks. System performance degrades as the temperature increases as mobile thermal management algorithms throttle operating CPU clock frequencies and switch off cores when devices overheat. In addition, overheating could hamper user experience and might even result in skin damage. Discomfort due to overheating is a concern that smart device users often complain.

(30) Thus, in this specification and in the claims that follow, reference will be made to a number of terms that shall be defined to have the following meanings, unless the context in which they are employed clearly indicates otherwise:

(31) The terms “electronic,” “electronically,” and the like are used in their ordinary sense and relate to structures, e.g., semiconductor microstructures, that provide controlled conduction of electrons, holes and/or other charge carriers.

(32) “Optional” or “optionally” means that the subsequently described circumstance may or may not occur, so that the description includes instances where the circumstance occurs and instances where it does not.

(33) The term “smart device” is used herein in its ordinary sense and refers to an electronic device, generally connected to other devices or networks via different wireless protocols such as Bluetooth, NFC, Wi-Fi, 3G, etc., that can operate to some extent interactively and autonomously. Exemplary smart devices include

(34) The term “solar panel” is used herein in its ordinary sense and refers to a photovoltaic panel designed to absorb sunlight and/or other photonic radiation as a source of energy for generating electricity.

(35) The terms “active cooling” (forced convection) and “passive cooling” (natural convection) are used herein in their ordinary sense and refer to a smart device holder that enhances the heat dissipation performance of the smart device.

(36) In general, the invention provides an easily carriable or portable cooler that includes a fan powered by with one or more solar panels. The fan directs air toward a holder for a smart device such as a smart phone or a smart tablet, thereby cooling the smart device. The cooler can be used outdoors with no power supply, and overcomes the shortcomings of the prior art. That is, a solar powered smart device fan is provided with a much broader spectrum of both portable and fixed operating applications, whereas prior art is application specific.

(37) In some embodiments, the upper surface of a smart device holder for holding a smart device addresses the passive cooling (natural convection) characteristics of smart devices to cool the bottom surface of a smart device. The thermal heat generated by a smart device escapes from the smart device holder by passive cooling (natural convection) when the smart device holder is used as a standalone component of this invention in the absence of solar power.

(38) Turning now descriptively to the drawings, i.e., FIGS. 1 to 18, in which like reference numbers denote like elements throughout the several views, various embodiments of the invention are depicted. With regard to the reference numerals used, the following numbering is used throughout the various drawing figures for single fan embodiments of the invention. 18 protective grille for 20 fan blade 20 fan blade 24 protective grille insertion pegs 34 magnet holders for the upper fan casing 37 magnet holder placement peg 40 smart device air flow passage 42 circular vent holes for 60 front fan motor 46 receiving hole for 50 front fan motor spindle 50 fan motor spindle 58 upper fan casing for 60 front fan motor 60 front fan motor 68 electric connector wiring 70 solar panel 71 positive terminal point 72 negative terminal point 74 bottom fan casing 76 transparent cover for 70 solar panel 78 smart device holder 84 magnets for 78 smart device holder 86 upper snap fastener 88 lower snap fastener insert 90 bottom fan casing air inlet in 74 bottom fan casing 94 air passage opening in 78 smart device holder for air flow 95 air flow grooves in 78 smart device holder

(39) A single fan solar powered cooler for a smart device such as a smartphone or smart tablet is shown in FIGS. 1 through 8. FIG. 1 provides a perspective view of certain assembled components of the single fan solar powered cooler for a smart device. FIG. 2 and FIG. 8 are exploded perspective views of a single fan solar powered cooler for a smart device. The device is magnetically connected to smart device holder 78. The holder 78 incorporates air passage opening 94 corresponding in position and size to the location of the protective grille 18 for fan blade 20 coupled to a fan motor spindle 50 for the front fan motor 60. The protective grille 18 is attached to the upper fan casing 58 using protective grille insertion pegs 24. Air flow is distributed over the bottom surface of a smart device by air flow grooves 95 which are long narrow shapes coupled with the circular air passage opening 94 incorporated in the upper surface of smart device holder 78. Thus, FIG. 1, FIG. 2, and FIG. 8 show the single fan solar powered cooler which includes an upper fan casing 58 for front fan motor 60, housing a protective grille 18 for fan blade 20, magnet holders for upper fan casing 34, magnets for the for connecting the smart device holder 36 held in place by magnet holder placement pegs 37, circular vent holes 42 for front fan motor 60, receiving hole 46 for fan motor spindle 50, electric connector wiring 68, solar panel 70, positive terminal point 71, negative terminal point 72. FIG. 5 shows the bottom fan casing 74 providing support for the transparent cover 76 for solar panel 70 and incorporates upper snap fastener 86, lower snap fastener insert 88, and bottom fan casing air inlets 90 in bottom fan casing 78.

(40) Returning to FIG. 2, circular vent holes 42 for front fan motor 60 are formed in the upper fan casing 58. Smart device air flow passage 40 and circular vent holes 42 for front fan motor 60 corresponding in position and size to the location of the protective grille 18 for fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60.

(41) FIG. 7 is a side sectional view along cut line VII-VII of FIG. 3. FIG. 7 illustrates the smart device wherein a single fan solar powered cooler is magnetically connected to smart device holder 78. The air flow within and parallel to smart device such as a smartphone or smart tablet wherein the single fan solar powered cooler is magnetically connected to smart device holder 78 is blown vertically by the fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60. The smart device such as a smartphone or smart tablet is cooled by the air flow produced by the fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60.

(42) The single fan solar powered cooler for a smart device addresses specific portions of the bottom surface of the smart device which are to be cooled. That is, the air blown up by the fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60, which are axial fans, into the smart device holder 78 is directly discharged horizontally through air flow grooves 95 which are long narrow shapes coupled with the circular air passage opening 94. Accordingly, the entire area of the bottom surface of the smart device such as a smartphone or smart tablet is cooled.

(43) Referring to FIG. 2, FIG. 3, FIG. 4, FIG. 6, FIG. 7 and FIG. 8, air exiting smart device air flow passage 40 and circular vent holes 42 is moved along the bottom surface of the smart device contained within the smart device holder 78, thereby cooling the bottom surface of the smart device. Heat dissipation is carried out at portions of the bottom surface of the smart device with which the air collides. As a result, desired cooling is achieved.

(44) That is, as shown in FIG. 2, the smart device may be magnetically connected to smart device holder 78 which incorporates air passage opening 94 corresponding in position and size to the location of the protective grille 18 for fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60 facilitates the continuous vertical alignment of air passage opening 94 with the corresponding protective grille 18 for fan blade 20 coupled to the fan motor spindle 50 for the front fan motor 60. The air passage opening 94 acts as a conduit for guiding air drawn by the fan blade 20 coupled to the fan motor spindle 50 for the front fan motor. The front fan motor 60 are not limited to their positions and number as long as they can blow air into the air passage opening 94. Additionally, a reduction in the height of the front fan motor 60 and the fan motor spindle 50 can reduce the total height of the single fan solar powered cooler for a smart device.

(45) The single fan solar powered cooler for a smart device constructed as described above can cool the entire bottom surface area of the smart device such as a smartphone or smart tablet by magnetically connecting to smart device holder 78 to the upper fan casing 58. All of the individual components may be glued to their corresponding connecting parts to remain in place, respectively. Additionally, cooling can be achieved as shown in other embodiments such as the dual fan solar powered cooler for a smart device such as a smartphone or smart tablet.

(46) In sum, in one embodiment of the present invention, air suction openings for single fan solar powered cooler for smart device include air flow passage 40, circular vent holes 42 is formed on the top surface of a housing upper fan casing 58 for front fan motor 60, and bottom fan casing air inlet 90 in bottom fan casing 74. An exhaust opening is formed on the top surface of a housing upper fan casing 58 through protective grille 18 for front fan blade 20 coupled to front fan motor 60 circulating air flow through a smart device holder 78 with an air passage opening 94 and air flow grooves 95 in smart device holder 78 for cooling the bottom surface of the smart device. The solar panel 70 for front fan motor 60 is connected to positive terminal point 71 and negative terminal point 72 using electric connector wiring 68 so that the fan motor may be driven by means of its power generation output. Thus, this portable type solar powered fan can be used simply without any place restrictions.

(47) Referring to FIG. 17, the passive cooling (natural convection) characteristics of the smart device holder 78, for holding a smart device allows dissipation of thermal heat to cool the bottom surface of a smart device by allowing the thermal heat generated to escape from the smart device holder when the smart device holder is used as a standalone component of this invention in the absence of solar power. Heat dissipation is carried out at portions of the bottom surface of the smart device with which the air collides. As a result, desired cooling is achieved.

(48) The following numbering is used throughout the various drawing figures for dual fan embodiments of the invention. 218 front protective grille for 220 front fan blade 228 rear protective grille for 214 rear fan blade 220 front fan blade 214 rear fan blade 224 protective grille insertion pegs 234 magnet holders for upper fan casing 236 magnets for the upper fan casing 237 magnet holder placement peg 240 smart device air flow passage 242 circular vent holes for 260 front fan motor and 266 rear fan motor 246 receiving hole for 250 fan motor spindle 250 fan motor spindle 258 upper fan casing for 260 front fan motor and 266 rear fan motor 260 front fan motor 266 rear fan motor 268 electric connector wiring 270 solar panel 271 positive terminal point 272 negative terminal point 274 bottom fan casing 276 transparent cover for 270 solar panel 278 smart device holder 284 magnets for 278 smart device holder 286 upper snap fastener 288 lower snap fastener insert 290 bottom fan casing air inlet in 274 bottom fan casing 294 air passage opening in 278 smart device holder for air flow 295 air flow grooves in 278 smart device holder 298 air passage opening in 278 smart device holder for air flow

(49) In another embodiment, the invention provides a dual fan solar powered cooler for a smart device, e.g., as shown in FIGS. 9 through 16. FIG. 9 provides a perspective view of certain assembled components of the due fan solar powered cooler for a smart device. FIG. 10 and FIG. 16 are exploded perspective views of a dual fan solar powered cooler for a smart device. The device is magnetically connected to smart device holder 278. The holder 278 incorporates air passage opening 294 corresponding in position and size to the location of the front protective grille 218 for front fan blade 220. The holder 278 incorporates air passage opening 298 corresponding in position and size to the location of and rear protective grille 228 for rear fan blade 214. Blade 220 are coupled to the fan motor spindle 250 for the front fan motor 260. The front protective grille 218 and rear protective grille 228 are attached to the upper fan casing 258 using protective grille insertion pegs 224. Air flow is distributed over the bottom surface of smart device by air flow grooves 295 which are long narrow shapes coupled with the circular air passage opening 294 incorporated in the upper surface of smart device holder 278.

(50) FIG. 10 and FIG. 16 show a dual fan solar powered cooler which includes an upper fan casing 258 for a pair of motors, i.e., front fan motor 260 and rear fan motor 266. Also shown housed by the casing 258 is a front protective grille 218 for front fan blade 220 and a rear protective grille 228 for rear fan blade 214, respectively. Additionally, provided are magnet holders for upper fan casing 234 and magnets for connecting the smart device holder 236, which are held in place by magnet holder placement pegs 237. Further provided are circular vent holes 242 for front fan motor 260 and rear fan motor 266, receiving hole 246 for fan motor spindle 250, electric connector wiring 268, solar panel 270, positive terminal point 271, and negative terminal point 272.

(51) FIG. 13 shows the bottom fan casing 274 that provides support for the transparent cover 276 for solar panel 270. As shown in FIG. 10, the bottom fan casing 274 also incorporates upper snap fastener 286, lower snap fastener insert 288, and bottom fan casing air inlets 290. Circular vent holes 242 are formed in the upper fan casing 258 for front fan motor 260 and rear fan motor 266. Smart device air flow passage 240 and circular vent holes 242 for front fan motor 260 and rear fan motor 266 correspond in position and size to the location of the front protective grille 218 for front fan blade 220 and rear protective grille 228 for rear fan blade 214, which are coupled to the fan motor spindle 250 for front fan motor 260 and rear fan motor 266, respectively.

(52) FIG. 15 is a side sectional view along cut line XIII-XIII of FIG. 11 illustrates the smart device wherein the dual fan solar powered cooler is magnetically connected to smart device holder 278. Air flow within and parallel to smart device wherein the dual fan solar powered cooler is magnetically connected to smart device holder 278 is forced perpendicular to the front fan blade 220 and rear fan blade 214 coupled to their fan motor spindle 250 for front fan motor 260 and rear fan motor 266, respectively. The smart device is thereby cooled by the air flow produced by the front fan blade 220 and rear fan blade 214 coupled to their fan motor spindle 250 for front fan motor 260 and rear fan motor 266, respectively.

(53) As shown FIG. 10 and FIG. 16, the dual fan solar powered cooler for a smart device addresses specific portions of the bottom surface of the smart device which are to be cooled. That is, the air is blown upward by the front fan blade 220 and rear fan blade 214, which are coupled to their fan motor spindle 250 for the front fan motor 260 and rear fan motor 266, respectively. Air from these axial fans is introduced into the smart device holder 278 and directly discharged upward flowing air through air flow grooves 295 which are long narrow shapes coupled with the circular air passage opening 294. Accordingly, the entire area of the bottom surface of the smart device such as a smartphone or smart tablet is cooled.

(54) Referring to FIG. 11, FIG. 12, FIG. 14, and FIG. 15, the air exiting smart device air flow passage 240 and circular vent holes 242 is moved along the bottom surface of the smart device such as a smartphone or smart tablet contained within the smart device holder 278, thereby cooling the bottom surface of the smart device such as a smartphone or smart tablet. Portions of the bottom surface of the smart device with which the air collides are cooled via heat dissipation. That is, magnetically connected to smart device holder 278 which incorporates air passage opening 294 corresponding in position and size to the location of the front protective grille 218 for front fan blade 220 and rear protective grille 228 for rear fan blade 214. Fan motor spindle 250 for the front fan motor 260 facilitates the continuous vertical alignment of air passage opening 294 with the corresponding front protective grille 218 and rear protective grille 228 coupled to their fan motor spindle 250, respectively. The air passage opening 294 acts as a conduit for guiding air drawn by the front fan blade 220 and rear fan blade 214 coupled to their fan motor spindle 250 for the front fan motor, respectively. The front fan motor 260 and rear fan motor 266, are not limited to their positions and number as long as they can blow air into the air passage opening 294. Additionally, a reduction in the height of the front fan motor 260 and rear fan motor 266, and their respective fan motor spindle 250 can reduce the total height of the dual fan solar powered cooler for a smart device.

(55) The dual fan solar powered cooler for a smart device constructed as described above can cool the entire bottom surface area of the smart device such as a smartphone or smart tablet by magnetically connected to smart device holder 278 to the upper fan casing 258. All of the individual components are glued to their corresponding connecting parts to remain in place, respectively.

(56) In sum, air suction openings for dual fan solar powered cooler for smart device are shown as smart device air flow passage 240. Circular vent holes 242 are formed on top surface of a housing upper fan casing 258 for front fan motor 260 and rear fan motor 266. Bottom fan casing air inlet 290 is located in bottom fan casing 274. An exhaust opening is formed on the top surface of a housing upper fan casing 258 through front protective grille 218 for front fan blade 220 and through rear protective grille 228 for rear fan blade 214, each circulating air flow through a smart device holder 278 with dual air passage openings 294 and 298 with air flow grooves 295 in smart device holder 278 for cooling the bottom surface of the smart device. The solar panel 270 for front fan motor 260 and rear fan motor 266 is connected to positive terminal point 271 and negative terminal point 272 using electric connector wiring 268 so that the fan motors may be driven by means of its power generation output. Thus, this portable type solar powered fan can be used simply without any place restrictions.

(57) Referring to FIG. 18, the passive cooling (natural convection) characteristics of the smart device holder 278, for holding a smart device allows dissipation of thermal heat to cool the bottom surface of a smart device by allowing the thermal heat generated to escape from the smart device holder when the smart device holder is used as a standalone component of this invention in the absence of solar power. Heat dissipation is carried out at portions of the bottom surface of the smart device with which the air collides. As a result, desired cooling is achieved.

(58) As described above, the invention allows air to uniformly collide with a bottom surface of a smart device such as a smartphone or smart tablet. As a result, the invention provides more effectively cooling of the smart device when compared conventional implementations of fans in combination with smart devices.

(59) The invention may exhibit a number of other advantages as well. For example, wind produced by the fan is typically effective to cool excessive temperatures, and may be directly and personally used by individual away from their usual premises and without any power mains supply available (for example train compartment etc.). That is, individuals may wish to protect themselves from or to alleviate excessive temperatures or their unpleasant attendant manifestations (including perspiration) through the use of the invention. Prior art fans are fundamentally unsuitable for this because they are generally too large and bulky and/or because they do not have an independent power supply. That is, they are tied to buildings.

(60) In contrast, the invention provides a light, handy design and is equipped with built-in and independent power supply facilities. These independent electrical energy sources in particular may comprise an accumulator, with a charging device and a mains connection, a storage battery, also with a charging device and a mains connection, a dry battery and last but not least solar power on the basis of the photovoltaic effect.

(61) The invention may also help prevent smart devices from overheating, or catching on fire. Some prior art devices are fundamentally unsuitable for external use outside of a motor vehicles air conditioning vent.

(62) Variations of the invention are possible. For example, multiple solar panels can be used for two or more fan motors, in series, parallel or in the combination of these. Such panels may be formed from a plurality of photovoltaic cells immobilized relative to the smart device. The cells form a solar panel that converts sunlight and other photonic radiant energy electric power. Similarly, in some embodiments, at least one blowing fan and at least one exhaust fan and electrically connected to the output terminals of the electric connector.

(63) As a first variant, the smart device holder may have a construction that allows horizontal air flow over a bottom surface of the smart device by active cooling (forced convection) or passive cooling (natural convection).

(64) As a second variant, the smart device holder may have one or more vent holes in conjunction with one or more air flow grooves which are elongated narrow shapes coupled with one or more circular air passage openings incorporated in the upper surface of smart device holder.

(65) As a third variant, the heat dissipation structure of the smart device holder may be disposed in the close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling (forced convection) and passive cooling (natural convection) so as to enhance the heat dissipation performance of the smart device.

(66) As a fourth variant, the upper surface of smart device holder may address the active cooling (forced convection) characteristics of smart devices to cool the bottom surface of a smart device by providing active cooling (forced convection) by forcing the thermal heat generated to escape from the smart device holder.

(67) As a fifth variant, air drawn in by the one or more cooling fans may be forced through the air passage and discharged through the one or more vent holes in order to cool the bottom surface of a smart device in the smart device holder.

(68) As a sixth variant, the smart device may be provided in a manner such that air directed toward the bottom surface of the smart device flows horizontally over the bottom surface.

(69) As a seventh variant, the upper surface of smart device holder may address the passive cooling (natural convection) characteristics of smart devices to cool the bottom surface of a smart device by allowing the thermal heat generated to escape from the smart device holder by passive cooling (natural convection) when the smart device holder is used as a standalone component.

(70) As an eighth variant, a solar panel protector cover may be provided having a clear plastic window over the solar panel, the solar panel protector cover secured to the solar panel with snap fastener and insert elements.

(71) As a ninth variant, one or more cooling fans and one or more charger units may be provided for charging the power supply for a smart device. They may be located between the upper fan and charger unit casing and the bottom fan and charger unit casing with a construction that allows horizontal air flow over a bottom surface of the smart device by active cooling (forced convection) or passive cooling (natural convection).

(72) As a tenth variant, at least one fan may rotate about a substantially vertical axis. In such a case, the heat dissipation structure of the smart device holder may be disposed in the close proximity space of the smart device to provide a good heat dissipation effect by way of active cooling (forced convection) and passive cooling (natural convection) so as to enhance the heat dissipation performance of the smart device.

(73) As an eleventh variant, the inventive cooler may have one or more vent holes and one or more receiving hole for the solar powered charger unit formed in the upper and/or lower fan and charger unit casing in conjunction with one or more air flow grooves which are elongated narrow shapes coupled with one or more circular air passage openings incorporated in the upper surface of smart device holder. The smart device holder may contain the smart device in a manner such that air directed toward the bottom surface of the smart device flows horizontally over the bottom surface may be forced through the air passage and discharged through the one or more vent holes in order to cool the bottom surface of a smart device in the smart device holder.

(74) It is to be understood that, while the invention has been described in conjunction with the preferred specific embodiments thereof, the foregoing description merely illustrates and does not limit the scope of the invention. Numerous alternatives and equivalents exist which do not depart from the invention set forth above. For example, any particular embodiment of the invention, e.g., those depicted in any drawing herein, may be modified to include or exclude features of other embodiments. Other aspects, advantages, and modifications within the scope of the invention will be apparent to those skilled in the art to which the invention pertains.