Lighting apparatus

Abstract

A lighting apparatus includes a first light source, a second light source, a first reflective cup, a second reflective cup, a base housing and a driver. The first light source is used for emitting a first light. The second light source is used for emitting a second light. The first reflective cup is used for limiting the first light in a first scope. The second reflective cup is used for limiting the second light in a second scope. The base housing is used for disposing the first reflective cup and the second reflective cup. The driver selectively provides a first driving current to the first light source and a second driving current to the second light source.

Claims

1. A lighting apparatus, comprising: a first light source for emitting a first light; a second light source for emitting a second light; a first reflective cup for limiting the first light in a first scope; a second reflective cup for limiting the second light in a second scope; a base housing for disposing the first reflective cup and the second reflective cup; a driver for selectively providing a first driving current to the first light source and a second driving current to the second light source, wherein the first light is an ultra-violet light; and a motion sensor, wherein the driver turns off the first driving current when the motion sensor indicates an object approaching the first scope.

2. The lighting apparatus of claim 1, wherein the first reflective cup is surrounded by the second reflective cup.

3. The lighting apparatus of claim 2, wherein the second light source comprises multiple second LED modules, wherein the first light source and the multiple second LED modules are disposed on a same circuit board, wherein the multiple second LED modules surround the first light source.

4. The lighting apparatus of claim 1, wherein the first reflective cup comprises aluminum material.

5. The lighting apparatus of claim 4, wherein the second reflective cup is made of plastic material.

6. The lighting apparatus of claim 1, further comprising a first light passing cover and a second light passing cover, wherein the second light passing cover has a cover opening for fixing the first light passing cover, wherein the first light passes through the first light passing cover, wherein the second light passes through the second light passing cover.

7. The lighting apparatus of claim 6, wherein first light passing cover is made of silica glass material.

8. The lighting apparatus of claim 1, wherein the base housing comprises a surface rim for concealing a cavity for installing the lighting apparatus, wherein the surface rim has a sensor hole for the motion sensor to detect the object.

9. The lighting apparatus of claim 8, wherein the motion sensor is integrated with the driver, wherein the motion sensor is placed to a motion detection groove of the surface rim for facing to the sensor hole.

10. The lighting apparatus of claim 8, further comprising a wireless sensor for receiving an external command from a remote control.

11. The lighting apparatus of claim 10, wherein the wireless sensor is integrated with the motion sensor and placed facing to the sensor hole.

12. The lighting apparatus of claim 1, wherein the base housing is a downlight housing with a pair of elastic units to attach to a cavity.

13. The lighting apparatus of claim 1, wherein the first reflective cup is moved by a motor for changing a direction of the first light to scan a sterilization zone.

14. The lighting apparatus of claim 1, wherein the driver is electrically connected to a wall switch mounted on a wall, wherein the driver detects a predetermined on-off pattern of an operation to the wall switch to determine activating the first light source to perform sterilization.

15. The lighting apparatus of claim 14, wherein the driver waits a waiting time period before turning on the first light source after the predetermined on-off pattern being detected.

16. The lighting apparatus of claim 15, wherein when the sterilization is performed, the second light emits by the second light source is changed to a different light parameter.

17. The lighting apparatus of claim 16, wherein the second light source emits a different color of the second light during sterilization.

18. The lighting apparatus of claim 1, wherein the first reflective cup surrounds the first reflective cup, wherein the first scope is larger than the second scope.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 illustrates an exploded view of a lighting apparatus embodiment.

(2) FIG. 2 illustrates an light source plate example.

(3) FIG. 3 illustrates a second reflective cup example.

(4) FIG. 4 illustrates a connection structure example.

(5) FIG. 5 illustrates a first reflective cup example.

(6) FIG. 6 illustrates a connection between a driver and a base housing.

(7) FIG. 7 illustrates a connection structure example.

(8) FIG. 8 illustrates a driver with a sensor module.

(9) FIG. 9 illustrates a driver not mounted with the sensor module.

(10) FIG. 10 illustrates a sensor hole and a sensor lens.

(11) FIG. 11 illustrates an exploded view of another embodiment.

(12) FIG. 12 illustrates a bottom view of another lighting apparatus embodiment.

(13) FIG. 13 illustrates a side view of the example in FIG. 12.

(14) FIG. 14 illustrates another lighting apparatus example.

(15) FIG. 15 illustrates a motor driven light example.

DETAILED DESCRIPTION

(16) Please refer to FIG. 12 and FIG. 13. FIG. 12 illustrates a bottom view of a lighting apparatus embodiment and FIG. 13 illustrates a side view of the example in FIG. 12.

(17) In FIG. 12 and FIG. 13, a lighting apparatus includes a first light source 808, a second light source 805, a first reflective cup 807, a second reflective cup 808, a base housing 841 and a driver 809. The base housing 841 has a surface rim 804 for concealing a cavity 811 in a ceiling for installing the lighting apparatus. There are a pair of elastic units 810 for keeping the lighting apparatus to stay in the cavity 811.

(18) The first light source 808 is used for emitting a first light, e.g. an ultra-violet light that can be used for performing sterilization.

(19) Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (ultraviolet C or UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions. UVGI is used in a variety of applications, such as food, air, and water purification.

(20) UV-C light is weak at the Earth's surface since the ozone layer of the atmosphere blocks it. UVGI devices can produce strong enough UV-C light in circulating air or water systems to make them inhospitable environments to microorganisms such as bacteria, viruses, molds, and other pathogens. UVGI can be coupled with a filtration system to sanitize air and water.

(21) The application of UVGI to disinfection has been an accepted practice since the mid-20th century. It has been used primarily in medical sanitation and sterile work facilities. Increasingly, it has been employed to sterilize drinking and wastewater since the holding facilities are enclosed and can be circulated to ensure a higher exposure to the UV. UVGI has found renewed application in air purifiers.

(22) The second light source 805 is used for emitting a second light.

(23) The first reflective cup 807 is used for limiting the first light in a first scope 832.

(24) The second reflective cup 808 is used for limiting the second light in a second scope 831.

(25) The base housing 841 is used for disposing the first reflective cup 807 and the second reflective cup 808.

(26) In this example, the second light source 805 has multiple LED modules 806 surrounding the first light source 808. In addition, the first reflective cup 808 is surrounded by the second reflective cup 808.

(27) The driver 809 selectively provides a first driving current to the first light source 808 and a second driving current to the second light source 805.

(28) The first light source 808 and the second light source 805 may include multiple types of LED modules so that the driver 809 may control and adjust the driving currents to different types of LED modules to change a light parameter, e.g. a mixed color or a mixed color temperature.

(29) In some embodiments, the first light is a ultra-violet light.

(30) In some embodiments, the first reflective cup is surrounded by the second reflective cup.

(31) In some embodiments, the second light source includes multiple second LED modules.

(32) In FIG. 2, the first light source 2 and the multiple second LED modules 3 are disposed on a same circuit board 7.

(33) The multiple second LED modules 3 surround the first light source 2.

(34) In some embodiments, the first reflective cup includes aluminum material.

(35) In some embodiments, the second reflective cup is made of plastic material. This is particularly helpful when the first light is an ultra-violet light while the second light is a normal light.

(36) In FIG. 12 and FIG. 13, the lighting apparatus may also include a first light passing cover 822 and a second light passing cover 821.

(37) The second light passing cover 822 has a cover opening 823 for fixing the first light passing cover 821.

(38) The first light passes through the first light passing cover 821.

(39) The second light passes through the second light passing cover 822.

(40) In some embodiments, first light passing cover is made of silica glass material.

(41) In some embodiments, the lighting apparatus may also include a motion sensor 803.

(42) The driver 809 turns off the first driving current when the motion sensor 803 indicates an object approaching the first scope 832.

(43) In some embodiments, the base housing 841 includes a surface rim 804 for concealing a cavity 811 for installing the lighting apparatus.

(44) The surface rim 804 has a sensor hole 801 for the motion sensor 803 to detect the object. The motion sensor 803 may be an infrared sensor or a microwave sensor. The sensor hole 801 decrease influence for collecting data.

(45) In some embodiments, the motion sensor is integrated with the driver.

(46) For example, FIG. 8 shows a driver box 771 with an extending bar 77103 holding a sensor module 77102 that has a motion sensor.

(47) The motion sensor is placed to a motion detection groove of the surface rim for facing to the sensor hole.

(48) For example, FIG. 7 shows a motion sensor 773 is placed in a motion detection grove 77101. There is a protective lens cover 77110 disposed above the motion sensor 773.

(49) In FIG. 12, the lighting apparatus may also include a wireless sensor 802 for receiving an external command from a remote control. For example, a Bluetooth or an infrared sensor may be used for receiving an external command from a remote control, e.g. to turn on a sterilization process.

(50) In some embodiments, the wireless sensor is integrated with the motion sensor and placed facing to the sensor hole.

(51) In some embodiments, the base housing is a downlight housing with a pair of elastic units to attach to a cavity. For example, FIG. 12 and FIG. 13 show such an example.

(52) In FIG. 15, the first reflective cup 905 is moved by a motor 905 controlled by a driver 903 for changing a direction 907 of the first light 906 to scan a sterilization zone. In such case, the first light source may be integrated with the first reflective cup to form an movable ultra-violet light to scan different areas for sterilization.

(53) In FIG. 15, the driver is electrically connected to a wall switch 911 mounted on a wall.

(54) The driver 903 detects a predetermined on-off pattern of an operation to the wall switch 911 to determine activating the first light source to perform sterilization. For example, three on and off operation applied on the wall switch 911 within 3 seconds may be decoded as an instruction to start the sterilization process. The on-off pattern may also be configured to associate with different parameters, e.g. the time period of sterilization.

(55) In some embodiments, the driver waits a waiting time period before turning on the first light source after the predetermined on-off pattern being detected. Such design gives a user sufficient to leave the room to be perform sterilization.

(56) In some embodiments, when the sterilization is performed, the second light emits by the second light source is changed to a different light parameter. For example, in sterilization mode, the second light source emits a red light as a warning that the room is under sterilization.

(57) In some embodiments, the second light source emits a different color of the second light during sterilization.

(58) In FIG. 14, the first reflective cup 9011 surrounds the first reflective cup 9021.

(59) The first scope is larger than the second scope. This is an opposite design compared with the previous example.

(60) Please refer to FIG. 1 to FIG. 11, which illustrate another embodiments. The same reference among different drawings may refer to the same components and may not be repeated again for brevity.

(61) In FIG. 1, a lighting apparatus includes a first light passing cover 601 and a second light passing cover 602 together forming a light passing cover 6. There is a second reflective cup 5 made of plastic material. There is a first reflective cup 4 inside the second reflective cup 5.

(62) The first reflective cup 4 and the second reflective cup 5 are used for guiding a first light of a first light source and a second light of a second light source mounted on a light source plate 7.

(63) The light source plate 7, the first reflective cup 4 and the second reflective cup 5 are disposed on the base housing 1. There is an aligning block 101 for aligning the light source plate 7 to be assembled to the base housing 1.

(64) In FIG. 2, there is a first light source 2 surrounded by multiple second LED modules 3 of a second light source. The first light source 2 and the second light source are both placed on a light source plate 7.

(65) In FIG. 3, the second reflective cup 5 has a reflective part 502, multiple bridge ribs 503 and an inner holder 501. The inner holder 501 and the reflective part 502 together guide the light of the second light source to desired directions.

(66) In FIG. 4, the base housing has an aligning block 101 to be buckled to a light passing cover 602 and a ring buckle groove 603. The second reflective cup 5 is also buckled to the base housing 1.

(67) In FIG. 5, the first reflective cup 5 is made of aluminum material. There is a scope A about 80 to 100 degrees spanning to perform sterilization.

(68) In FIG. 6, the surface rim 772 has a sensor opening 77201 for inserting a motion sensor 77108 that is mounted on a holder 77101 extended from a driver box 771.

(69) In FIG. 7, the motion sensor 773 is placed in a sensor groove 77101. There is a protective cover 77108 fixed by an edge of the sensor opening 77201 the surface rim 772.

(70) In FIG. 8, the sensor 773 is placed on a stage 77104 held by an extending bar 77103 extended from a driver box 771 for holding a driver.

(71) FIG. 9 shows a status that the sensor 773 is not placed yet.

(72) FIG. 10 shows a sensor 77110 placed on a sensor plate 77108 leaving a groove opening 77109 for passing a wire.

(73) FIG. 11 shows a pair of elastic units 993 with an extending arm 99303 and a spring 99302. There is a protruding pin 9301 to be inserted to a corresponding hole 99101 of a base housing 991. There is a screw 994 to attaching the driver box 992. The driver box has an extending sensor bar 99201 to hold one or more sensors. In addition, the driver box 992 has an aligning column 99203 and a protruding wall 99202 for attaching to other components.

(74) The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.

(75) The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated.

(76) Although the disclosure and examples have been fully described with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the claims.