Indirect lighting fixtures with symmetrical light source

Abstract

The present disclosure relates to an indirect lighting fixture and includes a light source assembly, a reflector structure component, a bottom structure component and an appearance structure component. The direct light from the light source assembly irradiates symmetrically on the inner surface of the reflector structure component and is reflected and diffusely reflected, and then emitted from the light outlet of the bottom structure component. The direct light of the light source assembly is designed to be invisible. This innovation transforms the hotspot direct light of the light source assembly into more soft light of the surface light source, and the high-efficiency reflector structure component allows indirect lighting fixtures to achieve high light efficiency simultaneously.

Claims

1. An indirect lighting fixture with a symmetrical light source comprising: a. a light source assembly, wherein the light source assembly is configured to emit light and includes a light-emitting diode (LED) connected to an electrical circuit, wherein the light source assembly has a certain angle of inclination to correspond to reflective structures with different depths and inner radians, wherein light points of the light source assembly are symmetrically distributed with a two-way symmetry, the two-way symmetry a left and right symmetry or an up and down symmetry, b. a reflector structure component, wherein the reflector structure component has a semi-enclosed reflective structure made of reflective material and having an inner surface with light reflective and diffuse reflective properties, wherein on one side of the inner surface is the light outlet, and the other side of the inner surface has a certain depth according to different types of lighting fixtures such that the reflector structure may be formed as a dome or an arch, and wherein differing heights or slopes are spliced under the dome or arch, wherein straight or beveled sides add depth; c. a bottom structure component, wherein the bottom structure component constitutes the installation structure and appearance of a bottom, wherein the bottom structure component is configured for installing and fixing the light source assembly at a certain angle is designed with corresponding shading structures according to the principle that direct light from the light source assembly does not directly emit from the light source assembly, achieving a fully indirect lighting effect; and d. an appearance structure component, wherein the appearance protects and installs the reflector structure component, wherein an apparent structure of employment is a part of the indirect lighting fixture with symmetrical light source, further comprising a beta angle defined between a light source assembly installation angle line and a light outlet horizontal line, wherein the beta angle is between or equal to 90 and 180, wherein the beta angle is an inclination angle adjusted according to a radian and depth of an inner surface of the reflector structural component wherein an optical lens covers the light source assembly, wherein the maximum light output angle is defined as an alpha angle and a light output line of the light source assembly is adjustable according to the requirements of light effect, different angles and light output directions, wherein a placement position and placement beta angle of the light source assembly is flexible.

2. The indirect lighting fixture with symmetrical light source of claim 1 further including an omnidirectional symmetry, where the up, down, left, and right orientations are symmetrical to each other, wherein the lowermost emitting light line of the uppermost light emitting point of the LED chip does not directly shine outside of the light outlet.

3. The indirect lighting fixture with symmetrical light source of claim 2, wherein the bottom structure component installs or fixes the light source assembly together with the appearance components, wherein the bottom structure component further includes an extending edge extension tip that blocks the light from the lowermost emitting light line of the uppermost light emitting point of the LED chip.

4. The indirect lighting fixture with symmetrical light source of claim 1, wherein adjusting the magnitude of an included angle increases light radiation upon the inner surface of the reflector structure component, wherein the reflective material is a plastic material.

5. The indirect lighting fixture with symmetrical light source of claim 1, wherein the beta angle is between or equal to 90 and 180 with an optical lens.

6. The indirect lighting fixture with symmetrical light source of claim 5, wherein the light source assembly is covered with a layer of diffusion cover that is configured to reduce yellow light edges or colorful light edges in the side of the light outlet.

7. The indirect lighting fixture with symmetrical light source of claim 5, wherein the light emitting center line of the LED of the light source assembly is covered by a lens or without a lens is below the line between the center point of the LED light source of the light source assembly and the center apex of the cross-section of the reflective structure component.

8. An indirect lighting fixture with a symmetrical light source comprising: a. a light source assembly, wherein the light source assembly is configured to emit light and includes a light-emitting diode (LED) connected to an electrical circuit, wherein the light source assembly has a certain angle of inclination to correspond to reflective structures with different depths and inner radians, wherein light points of the light source assembly are symmetrically distributed with a two-way symmetry, the two-way symmetry a left and right symmetry or an up and down symmetry, b. a reflector structure component, wherein the reflector structure component has a semi-enclosed reflective structure made of reflective material and having an inner surface with light reflective and diffuse reflective properties, wherein on one side of the inner surface is the light outlet, and the other side of the inner surface has a certain depth according to different types of lighting fixtures such that the reflector structure may be formed as a dome or an arch, and wherein differing heights or slopes are spliced under the dome or arch, wherein straight or beveled sides add depth; c. a bottom structure component, wherein the bottom structure component constitutes the installation structure and appearance of a bottom, wherein the bottom structure component is configured for installing and fixing the light source assembly at a certain angle is designed with corresponding shading structures according to the principle that direct light from the light source assembly does not directly emit from the light source assembly, achieving a fully indirect lighting effect; and d. an appearance structure component, wherein the appearance protects and installs the reflector structure component, wherein an apparent structure of employment is a part of the indirect lighting fixture with symmetrical light source, wherein the light emitting center line of the LED of the light source assembly is below the line between the center point of the LED light source of the light source assembly and the center apex of the cross-section of the reflective structure component, wherein two lines are within a slope angle is lambda angle between or equal to 0 to 45, wherein the center emitting line of the LED of the light source assembly is within an angle range to optimize light output effect, wherein all light emitting centerlines of all the LED chips pass through the centerline of the cross-section of the reflective structure component to the other side of the centerline, and the lambda angle formed is within the range of greater than or equal to 0 and less than 45, thereby realizing the symmetry and uniform cross lighting, whereby this design allows the light rays within the light emission angle of the LED point light sources to achieve a maximum range of effective light emission and be reflected.

9. The indirect lighting fixture with symmetrical light source of claim 8, wherein a shape of the inner surface of the reflector structure component varies.

10. The indirect lighting fixture with symmetrical light source of claim 8, wherein the light source assembly is covered with optical lens components to adjust its own light output angle and light output amplitude to achieve optimal light efficiency.

11. The indirect lighting fixture with symmetrical light source of claim 8, further including an omnidirectional symmetry, where the up, down, left, and right orientations are symmetrical to each other.

12. The indirect lighting fixture with symmetrical light source of claim 8, wherein the bottom structure component installs or fixes the light source assembly together with the appearance components.

13. The indirect lighting fixture with symmetrical light source of claim 8, wherein an installation angle line of the light source assembly is formed without a lens covering and a horizontal line of the light outlet of the reflector structure component forms a beta angle between or equal to 90 to 180, wherein the inclination angle is adjusted according to the radian and depth of the inner surface of the reflector structural component.

14. The indirect lighting fixture with symmetrical light source of claim 13, wherein adjusting the magnitude of an included angle increases light radiation upon the inner surface of the reflector structure component, wherein the reflective material is a plastic material.

15. The indirect lighting fixture with symmetrical light source of claim 8, wherein an optical lens covers the light source assembly, wherein the maximum light output angle and the light output line of the light source assembly is adjustable according to the requirements of light effect, different angles and light output directions, wherein a placement position and placement angle which is a beta angle of the light source assembly is flexible.

16. The indirect lighting fixture with symmetrical light source of claim 15, wherein the light source assembly is covered with the optical lens and kept parallel to the horizontal line of the light outlet of the bottom structure component, wherein the placement angle which is the beta angle equals 180.

17. The indirect lighting fixture with symmetrical light source of claim 15, wherein the placement angle is a tilt angle which is a beta angle and is greater than 90 and less than or equal to 180.

18. The indirect lighting fixture with symmetrical light source of claim 8, wherein the light source assembly is covered with a layer of diffusion cover that is configured to reduce yellow light edges or colorful light edges in the side of the light outlet.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of the overall appearance according to an embodiment of an indirect lighting fixture.

(2) FIG. 2 is an exploded view of the structure of the indirect lighting fixture shown in FIG. 1.

(3) FIG. 3 is a simplified selection diagram of the indirect lighting fixture shown in FIG. 1.

(4) FIG. 4 is a partially enlarged view of the simplified selection diagram of the indirect lighting fixture shown in FIG. 3.

(5) FIG. 5a, and FIG. 5b are a schematic diagram of the LED light source of the indirect lighting fixture shown in FIG. 1. FIG. 5b is a cross-section view of FIG. 5a.

(6) FIG. 6 is a schematic diagram of the indirect lighting fixture shown in FIG. 5 after the LED light source covers the optical lens.

(7) FIG. 7 is a simplified illustration of component placement angles for this indirect lighting fixture shown in FIG. 1.

(8) FIG. 8 is a simplified diagram of the outgoing line of this indirect lighting fixture shown in FIG. 1.

(9) FIG. 9 is an enlarged schematic diagram of the edge design of the indirect lighting fixture shown in FIG. 1.

(10) FIG. 10 is a schematic diagram of the light output after reflection/diffuse reflection of the indirect lighting fixture shown in FIG. 1.

(11) FIG. 11 is an embodiment of a lighting fixture with square style symmetrical light source.

(12) FIG. 12 is an embodiment of a lighting fixture with parallel symmetrical light source.

THE FOLLOWING CALL OUT LIST OF ELEMENTS CAN BE A USEFUL GUIDE IN REFERENCING THE ELEMENT NUMBERS OF THE DRAWINGS

(13) 80 Alpha Angle 81 Light Source Assembly Channel 82 Beta Angle 83 Lambda Angle 100 Indirect Lighting Fixture 110 Light Source Assembly 111 LED Chips 112 Substrate 113 Optical Lenses 120 Reflector Structure Component 121 Reflector Structure Component Light Outlet 122 reflector structural component inner surface 130 Bottom Structure Component 131 Bottom Structure Component Light Outlet Aperture 132 Bottom Structure Component Edge 133 Edge Extension Tip 140 Appearance Structure Component 150 Uppermost Emitting Light Line of The Uppermost Light Emitting Point Of The LED Chip 151 Lowermost Emitting Light Line of The Lowermost Light Emitting Point Of The LED Chip 152 Central Luminous Line 153 Lowermost Emitting Light Line Of The Uppermost Light Emitting Point Of The LED chip 154 Reflector Central Vertical Line 155 Apex Connecting Line 156 Light Source Assembly Installation Angle Line 157 Horizontal Line Of The Light Outlet (Aperture) 158 Apex

DETAILED DESCRIPTION OF THE EMBODIMENTS

(14) The following embodiment, which is an indirect lighting downlight produced by adopting the above innovative design, will be described in detail with reference to the schematic diagrams above.

(15) As shown in FIG. 1, an indirect lighting fixture 100 when seen externally has a bottom structure component 130 and bottom structure component light outlet aperture 131 formed on the bottom structure component 130. The appearance structure component 140 is formed as an upper housing and preferably has ornamental features to allow consumers to distinguish between different products.

(16) As shown in FIG. 2, an exploded view of the present invention shows the appearance structure component 140 fitting over the reflector structure component 120. The reflector structure component 120 has a reflector structure component light outlet 121. The reflector structure component light outlet 121 fits with and matches the bottom structure component light outlet aperture 131. The light source assembly 110 has a ring of LED chips 111. A light source assembly 110 fits over the bottom structure component 130 and can be snap fit together during assembly. A reflector structure component 120 fits over the bottom structure component 130. The appearance structure component 140 fits over the reflector structure component 120.

(17) The reflector structure component 120 is a semi-closed structural member formed by processing or bending reflective materials. One side of the reflector structure component 120 is a fully opening light outlet 121, and the light outlet 121 of the reflector structure component 120 is designed according to the structure of different embodiments, so the shape of its opening will vary according to the design of the lamp body structure. At the same time, the light outlet 121 of the reflector structure component 120 is larger than the light outlet 131 of the bottom structure component 130, and the opening directions of the two are the same. The other side of the reflector structure component 120 is a closed structure with a certain inner radian surface 122. Depending on the embodiment of the specific luminaire, the embodiment may have different styles of top arched or domed shapes.

(18) Referring to FIG. 2, the bottom structure component 130 is a structural member for installing and combining the light source assembly 110 and the reflector structure component 120. According to certain design requirements, the bottom structure component 130 fixedly combines the light source assembly 110 and the reflective structure component 120 at a certain installation angle to achieve the best overall light output effect. The appearance structure component 140 is a lamp shell whose shape is close to that of the reflector structure component 120. After being assembled and installed with other components, the appearance structure component 140 forms an integral part of the appearance of the indirect lighting fixture 100. The appearance structure component 140 also protects and secures the reflector structure component. The appearance structural component 140 may have various shapes according to the exterior design requirements of the lamp. The appearance structural component 140 can also be superimposed with other structures on the current basis to place power supplies or other appearance modules with different functions. The appearance structural component 140 can be plastic or metal. According to different lighting application scenarios and different design requirements, the appearance structure component 140 has many possibilities.

(19) As shown in FIG. 3, a general cross-section of the indirect lighting fixture 100 shows a reflector structure component 120 mounted to the bottom structure component 130. The bottom structure component 130 can be shown as a trim having a flashing around its bottom structure component light outlet aperture 131.

(20) As shown in FIG. 4, a close-up view of a portion of the section in FIG. 3 shows the reflector structure component 120 mounted over the bottom structure component 130. The bottom structure component 130 has an extending edge extension tip 133 that extends from the bottom structure component edge 132. The light source assembly 110 is mounted in a light source assembly channel 81 formed between the bottom structure component edge 132.

(21) As shown in FIG. 5a, the light source assembly 110 is a luminescent light source composed of a group of LED chips 111 pasted on the substrate 112 in a light source assembly channel 81. This embodiment uses conventional LED light sources as an example, but this innovation is not limited to only use of LED light sources, and can also use other types of light sources, such as CCFL, laser lights, tungsten lamps, etc. LED 111 is a semiconductor light-emitting diode. LED 111 is a cold light source. LED 111 has a high photoelectric conversion rate and small size, and the light angle of LED 111 for general lighting is 120 degrees.

(22) The LED chips are surface mounted on a substrate 112. The substrate 112 may be a flexible board, or the substrate 112 may be a hard metal substrate. Usually, the substrate 12 is lined with copper wires inside and is a PCB board containing electronic circuits. Welding points on the surface of the substrate 112 connect the LED CHIP 111 to form the light source assembly 110.

(23) Referring to FIG. 5b, the LED 111 of the light source assembly 110 has its light emitting range denoted by alpha angle 80. Alpha angle 80 is defined between an uppermost emitting light line of the uppermost light emitting point of the led chip 150 and lowermost emitting light line of the lowermost light emitting point of the led chip 151.

(24) The uppermost emitting light line of the uppermost light emitting point of the led chip 150 is the uppermost emitting light line of the uppermost light emitting point of the LED 111 chip. The lowermost emitting light line of the lowermost light emitting point of the led chip 151 is the lowermost emitting light line of the lowermost light emitting point of the LED chip. The maximum included angle , called the alpha angle 80, is defined between the uppermost emitting light line of the uppermost light emitting point of the led chip 150 and the lowermost emitting light line of the lowermost light emitting point of the led chip 151 as 120.

(25) The central luminous line 152 is at a 90 angle to the horizontal plane of the LED chip 111, which is the light source assembly line 156 and is also the most central outward emitting straight line of the LED chip 111 light emitting area. The central luminous line 152 is the central line of emission from the LED chip apex. The light source assembly installation angle line 156 is normal to the central luminous line 152. The light source assembly installation angle line 156 is on the plane where the LED is mounted to its substrate such as a printed circuit board.

(26) According to the different design of the overall structure of different lighting fixtures, the shape of the light source assembly 110 is also different. The light source assembly 110 can be a closed loop connected end to end, according to FIG. 2, or the light source assembly 110 can be formed of parallel multiple strips formed by two or more substrates pasted with LED chips. The light source assembly 110 shape is designed according to the shape of the light outlet 131 and the bottom shape of the reflector structure component 120 and the light effect requirements. The light source assembly 110 light source points have a certain symmetrical arrangement in this innovation.

(27) Referring to FIG. 6, a set of optical lenses 113 can be additionally mounted to the surface of the light emitting source assembly 110 according to the light emission direction and light emission amplitude as required. The optical lens 113 covers the surface of the LED 111 light source. The optical lens 113 can change the light emitting direction of the LED 111 according to the pre-designed parameters, realize the light concentrating and astigmatism, and also change the size range of the light emitting angle of the light emitting light, helping to realize the best effects of indirect light.

(28) Referring by comparison between FIGS. 4,5, 6, by adding the optical lens 113, highlighted in FIG. 6, the angle of the light emitted by the light source assembly 110 has been changed. Using the optical lens 113 to condense the light and change the range of the light angle of the light can avoid the situation that the light angle caused by the light angle of the light is too large or unsuitable to be incident on other non-reflective surfaces such as the rib 132 of a bottom structure component 130. The optical lens 113 can controllably gather light and irradiate light to the inner reflective surface of the reflective structural part 120 to achieve the best light effect. Similarly, to achieve the effect of indirect lighting, the light from the light source assembly 110 covered with the optical lens 113 cannot exit from the light outlet 131 of the bottom structure component 130. Generally, if the optical lens 113 is used to change the light output direction, the overall light output efficiency will be lost by 10%-15% or even more due to the different materials of the lens 113.

(29) Referring to FIG. 7 to maximize the light extraction efficiency, in the case of different reflector structure components 120, the light source assembly installation angle line 156 of the light source assembly 110 without lens covering and the light outlet horizontal line 157 of the reflector structure component 120 form a beta angle 82. Beta angle 82 is defined between the light source assembly installation angle line and the horizontal line of the light outlet. Beta angle 82 is an inclination angle formed at between or equal to 90 and 180 (90<180). According to the radian and depth dimensions of the inner surface of the reflector structural component 120, adjusting the magnitude of the included angle can allow more and better light from the light source assembly 110 to radiate the inner reflective surface of the reflector structure component 120.

(30) Referring to FIG. 6 and FIG. 7, in the case where the optical lens 113 covers the light source assembly 110, the maximum light output angle and the light output line 150 and 151 of the light source assembly 110 can be changed. According to the requirements of light effect, different angles and light output directions can be designed, so the placement position and placement angle of the light source assembly 110 will be relatively flexible. The light source assembly 110 covered with the optical lens 113 can be kept parallel to the horizontal line of the light outlet 131 of the bottom structure component 130, that is, the angle =180 is used to place the light source assembly 110 or other large slope angles. This design is usually conducive to structural installation, or to facilitate production and assembly. Although in the case of adding the optical lens 113, the tilt angle has more flexibility, but in the end, no matter whether the optical lens 113 is added or not, the installation position of the light source assembly 110 will still fall within the range of the angle . Greater than 90 degrees and less than or equal to 180 degrees.

(31) Referring to FIG. 8, the reflector structure component 120 has an apex 158 which is the highest central point of the structure, and the reflector central vertical line 154 of its cross section defines the central half vertical tangent. In an indirect lighting fixture designed according to a symmetrical light source, under a cross section view the reflector structure component 120 has the apex 158 of this internal arc reflection structure. The light source points at opposite sides are relatively symmetrical and produce symmetrical light output.

(32) Depending on the requirements of different lamp embodiments, the reflective structure 120 may be increased with straight or inclined edges of different heights at the bottom, and the dome shape or semicircular upper structure of the inner arc surface can be extended above the straight or inclined surfaces. Such a design can provide the reflective structure with a deeper height and more internal reflective surfaces, which can bring different lighting efficiency and appearance characteristics and reduce the light emission angle.

(33) The central luminous line 152 of the LED chips 111 of the light source assembly 110 can be covered by a lens or without a lens. An apex connecting line 155 forms a connecting line from the LED chip to the reflector structure component apex. The apex connecting line 155 can be defined as beginning at the center point of the LED chips 111 and extending to the apex 158 which is located at the center apex section of the reflective structure component 120 when taking a cross-section of the reflective structure component 120. At the same time, the two lines namely the central luminous line 152 and apex connecting line 155 are within a slope angle , namely the lambda angle 83 ranging from 0 to 45 (045). The central luminous line 152 of the LED 111 of the light source assembly 110 is within this angle range to form the best light output effect. That is, all light emitting centerlines namely the central luminous line 152 of all LED 111 chips pass through the reflector central vertical line 154 of the cross-section of the reflective structure component 120 to the other side of the reflector central vertical line 154, and the angle formed is within the range of greater than or equal to 0 and less than 45, thereby realizing symmetry and uniform cross lighting. This design allows the light rays within the light emission angle of the LED chips 111 assembled as a point light source to achieve the maximum range of effective light emission upon reflection.

(34) When the shape of the inner surface of the reflector structure component 120 is different than shown, such as having different straight edges or oblique edges, or different internal dome designs, the reflection on the inner surface of different structures will cause multiple different reflections and diffuse reflections of light, and the range of the oblique angle may vary, requiring adjustment of the angle value to obtain the best light efficiency. The general way to find the best light output angle value is to use the process of elimination. For example, first choose the middle value of the best range of angle , which is greater than or equal to 0 degrees and less than 45 degrees, i.e., 22.5 degrees, and then take another middle value of 11.25 degrees and 33.75 degrees on each side and perform three-point actual measurements of light efficiency values. Among the three-point actual measurement values, 22.5 degrees is normally the middle value, then filter out the side with low light efficiency values. Next step is to choose the middle value of the angle on both sides of the selected high light efficiency value area for the second screening. Generally, after 2-3 screenings, the best light efficiency angle value can be found. The angle value will be changed with the change of the angle value, with the angle value given priority.

(35) The reflector structure component 120 is mainly made of a type of plastic material with high-efficiency light reflection and diffuse reflection properties. This reflective material may be PET material, PC material, foamed polycarbonate, or expanded polystyrene foam or other types of plastic materials. Currently they are mainly used in the display industry as well as traditional direct lighting fixtures. For example, MCPET/MCPOLYCA material series of FURUKAWA can achieve a high light efficiency of 99% in light reflection efficiency and 96% in light diffuse reflection efficiency. Such high luminous efficacy helps to solve the loss problem of the innovative light in reflection, enabling indirect lighting fixtures to be realized.

(36) Reflective plastic materials can generally be thermoformed or die-cut into different appearance shapes. In the structural design of lamps, the processed reflective material is our reflective structure component 120. The reflective material has a certain degree of stretchability, and the reflective material is flexible such that it can be bent and curled. At present, there are many types of reflective plastic materials from many companies on the market that can achieve high light efficiency and diffuse reflection light output. Their products can be replaced by each other. At present, they are widely used in different types of traditional direct lighting fixtures.

(37) As shown in FIG. 8, in this cross-section, the LED 111 beads on the lower left side of the bottom structure component 130 illuminate towards the upper right direction of the inner surface of the reflective structural component 120, while the LED 111 beads on the lower right side of the bottom structural component 130 illuminate towards the upper left direction of the inner surface of the reflective structural component 120. The LED 111 beads on both sides of the bottom structure component 130 in any cross-section illuminate at the same time and irradiate the inner surface of the reflective structure component 120 in the opposite direction.

(38) As shown in FIG. 8, this two-way symmetric cross-emitting lighting design will allow the light to illuminate as a whole and diffusely reflect to the inner reflective surface of the entire reflector structure component 120. The high efficiency material will help the light to be multi-reflected on the surface of the reflective structure component 120. The light on the internal reflective surface of the reflective structure component 120 will be evenly distributed without bright spots, which can avoid the situation that some areas of the internal reflective surface of the reflector structure component 120 are bright and some areas are dark.

(39) The comprehensive omnidirectional symmetrical cross lighting design can effectively avoid or reduce the phenomenon of yellow light edge or colored light edge on the outermost edge of the light outlet (aperture)131 of the bottom structure component 130. If the light on the outermost side of the light outlet (aperture) 131 of the bottom structure component 130 has yellow light edges or colorful light edges, when designing the structure, then an added layer of diffusion cover on the LED 111 chips can solve the yellow edge of the outermost light or colorful edge phenomenon. Under the condition of symmetrical light reflection with light sources on different sides, the color fringing or yellow fringing is relatively slight or non-existent. If the light source assembly 110 is only parallel and symmetrical, for example, under the condition of double parallel light sources parallel up and down or parallel to left and right, and only the light sources on both sides are symmetrically lit, this issue is easy to appear.

(40) Referring to FIG. 9, the bottom structure component 130 needs to be designed such that the direct light emitted by the light source assembly 110 cannot be seen through the light outlet (aperture) 131 of the bottom structure component 130 under any viewing angle. The lowest light emitting line 153 of the light-emitting point on the uppermost side of the LED 111 needs to be irradiated to the edge extension tip 133 of the edge 132 of the bottom structure component 130 or lower than it. The direct light will not be seen. Similarly, any direct outgoing light after the cover lens 113 is added above the light source assembly 110 to change the light angle of the outgoing light cannot pass through the light outlet 131 of the bottom structure component 130 and directly exit.

(41) To achieve the uniformity and saturation of the light emitted in this innovative embodiment, when designing the corresponding relationship between the light source assembly 110 and the reflective structural component 120, the light emitted by the LED chips 111 light source point of the light source assembly 110 must illuminate symmetrically. The LEDs 111 of the light source assembly 110 need to be symmetrically distributed on the bottom of the reflective structural component 120. This symmetry is a relative symmetry. The light source assembly 110 can be symmetrical on the left and right sides, that is, the two sides of the light outlet 131 are symmetrical with two parallel LED chips 111, and the two LED chips 111 emit light upward, which will cross each other according to the set angle parameters. This symmetry can also be circular or oval or square or rectangular closed-loop light source points connected end to end. These light source points LED chips 111 will be on opposite sides of the light outlet 131. The light source points are symmetrical with each other.

(42) Referring to FIG. 10, the light source points of the symmetrical light source need to be uniform and evenly distributed with a certain interval. The distances between the light source points of the light source assembly are approximately the same, and the light source points are evenly distributed. According to different luminous flux requirements, the greater the luminous flux requirement, the greater the relative density of each light source point, and the lower the luminous flux, the wider the distance between each light source point.

(43) As seen in FIG. 11, the present invention can be formed as a square style symmetrical light. A lighting fixture with a square style symmetrical light source will have a square or rectangular light source component 110 composed of LED chips distributed symmetrically in all directions. The bottom structure component light outlet aperture 131 is also square. The reflector structure component light outlet 121 is also square. The bottom structure 130 is responsible for installing the light source component and blocking direct light. The reflective structure component 120 can be made of high light tolerance with high reflection efficiency plastic material. The lighting fixture also has an appearance structure component 140 which can also be formed as an upper housing.

(44) Referring to FIG. 12, a lighting fixture has a parallel symmetrical light source. The light source component 110 is composed of double symmetrical parallel and evenly distributed LED chips. The LED strips are mounted on both sides. The bottom structure 130 parts are responsible for installing the light source component and blocking the direct light from the light source. The reflective structure component 120 having an elongated reflector structure component light outlet 121 is made by the high light reflection efficiency plastic material. The lighting fixture also has an appearance structure component 140.