Side light-emitting device with curved surface light emitting function

Abstract

The utility model discloses a side light-emitting device with curved surface light emitting, and relates to the technical field of side light-emitting devices. Comprising a PCB, a plurality of LED lamp beads are arranged on the PCB, chips are installed in the LED lamp beads, colloid is arranged on the outer sides of the chips, a semi-reflection cover is arranged on the colloid, distribution and diffusion of light rays can be improved through the curved surface design, and therefore the uniformity of a light source is improved, and through the design of the proper curvature, the brightness of the light source is improved. Light can be more effectively scattered to the surface of the whole display screen, dark areas and brightness nonuniformity are reduced, the view angle characteristic of the light source can be improved through the curved surface design, the light can be more widely scattered out from the side face, and therefore the view angle performance of a displayer is improved, and color and brightness nonuniformity caused by view angle changes is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of side-light emitting devices, in particular to a side-light emitting device with curved surface light emission. Background Art

[0002] The emergence of LED displays not only improves the overall aesthetics, but more importantly, it greatly changes the overall appearance of the display. LED displays have high brightness, fast response and excellent color saturation.

[0003] LED elements are made up of different components, so the light they emit is different. Different components will especially affect the distribution and diffusion of light. If the curvature of the component used to refract the light is not enough, the light cannot be effectively scattered over the entire display surface, resulting in dark areas and uneven brightness, reducing the display viewing angle performance. At the same time, when the viewing angle changes, the color and brightness unevenness becomes more obvious.

[0004] Therefore, we propose a side-emitting device with curved surface light emission to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of this, the present invention aims to provide a side-emitting device with curved surface light emission, which is used to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: it includes a PCB circuit board, on which a plurality of LED lamp beads are arranged, chips are installed in the plurality of LED lamp beads, a colloid is arranged on the outside of the chip, and a semi-reflective cover is arranged on the colloid.

[0007] As a preferred solution, an electrical terminal is provided at one end of the LED lamp bead close to the PCB circuit board, and the LED lamp bead is fixed to the PCB circuit board by welding with the electrical terminal.

[0008] As a preferred solution, a plurality of groups of reflective cones are arranged on the PCB circuit board, and the plurality of groups of reflective cones are respectively surrounded and located on the outside of the plurality of LED lamp beads.

[0009] As a preferred solution, the curvature of the side of the colloid can be adjusted according to the surface equation: Z(x,y)=∑[C(ì)*Z(i], i=1 to n.

[0010] As a preferred solution, Z(X, y) represents the aspheric shape function, C(i) represents the i-th aspheric coefficient, Z(i) represents the Zernike polynomial corresponding to the i-th coefficient, and n represents the highest order used.

[0011] As a preferred solution, the range of x, y is between -1.75 and 1.75.

[0012] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly has the following advantages:

[0013] The device can improve the distribution and diffusion of light through the curved surface design, thereby improving the uniformity of the light source. By designing an appropriate curvature, the light can be more effectively scattered over the entire display surface, reducing dark areas and brightness unevenness. The curved surface design can improve the viewing angle characteristics of the light source, allowing the light to be scattered more widely from the side, thereby improving the viewing angle performance of the display and reducing color and brightness unevenness caused by changes in viewing angle.

[0014] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0016] Figure 2 It is a front view structural schematic diagram of an embodiment of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of an embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of an example of a colloid curve in the case of an axisymmetric curved surface in an embodiment of the present utility model;

[0019] Figure 5 It is a schematic diagram of the packaging structure of an embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of the second structure of the colloid in the embodiment of the utility model;

[0021] Figure 7 It is a schematic diagram of the third structure of the colloid in the embodiment of the utility model.

[0022] Explanation of the accompanying drawings: 1. LED lamp bead; 2. Chip; 3. Colloid; 4. Semi-reflective cover; 5. Electrical terminal; 6. PCB circuit board; 7. Reflective cone. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] See also Figures 1 to 7 The embodiment of the utility model provides a side-light emitting device with curved light emission, including a PCB circuit board 6, a plurality of LED lamp beads 1 are arranged on the PCB circuit board 6, a chip 2 is installed in the plurality of LED lamp beads 1, a colloid 3 is arranged on the outside of the chip 2, a semi-reflective cover 4 is arranged on the colloid 3, the colloid 3 is above the LED lamp beads 1 and surrounds the chip 2, the semi-reflective cover 4 is located above the colloid 3 and can reflect a part of the light beam emitted by the chip 2, after the light beam emitted by the chip 2 is reflected to the outside of the colloid 3 by the curved curvature of the side of the colloid 3, a part of it can be directly transmitted to the outside of the semi-reflective cover 4 through the semi-reflective cover 4, thereby reducing the light intensity of the central light-emitting area corresponding to the chip 2, so that the light emitted by the device is more uniform and the local light intensity is reduced;

[0026] The colloid 3 can be made of one of silicone, epoxy resin, PC polycarbonate or PMMA polymethyl methacrylate. The silicone colloid has good flexibility, high and low temperature resistance and electrical insulation performance, and is often used in occasions that are temperature sensitive or require flexible installation, such as automotive lighting, decorative light strips, etc. At the same time, the silicone colloid can evenly reflect LED light, improve light efficiency, and has good durability and reliability.

[0027] Epoxy resin, epoxy resin colloid has high hardness and wear resistance, and is suitable for occasions that require a higher level of protection and a longer service life, such as outdoor lighting, industrial lighting, etc. Epoxy resin colloid can effectively reflect and diffuse LED light, making the light more uniform and soft, and has good weather resistance and chemical corrosion resistance;

[0028] PC polycarbonate, PC colloid has excellent light transmittance, impact resistance and high temperature resistance. It is often used in high-brightness and high-demand lighting occasions, such as stage lighting, commercial lighting, etc. PC colloid can efficiently reflect LED light and increase luminous flux while maintaining good color reproduction and stability;

[0029] PMMA polymethyl methacrylate, PMMA colloid has good light transmittance and processing performance, and is often used in occasions that require high transparency and good optical properties, such as display cabinet lighting, advertising light boxes, etc. PMMA colloid can effectively reflect and focus LED light, improve lighting effects, and is easy to process and install.

[0030] See also Figures 1 to 7 , an electrical terminal 5 is provided at one end of the LED lamp bead 1 close to the PCB circuit board 6, and the LED lamp bead 1 is fixed on the PCB circuit board 6 by welding the electrical terminal 5 and the PCB circuit board 6. When welding, first align the electrical terminal 5 of the LED lamp bead 1 with the welding point or welding hole on the PCB circuit board 6 to ensure the correctness of the electrical connection, use welding equipment such as a soldering iron, a hot air gun, etc. to heat the electrical terminal 5 and the reserved welding point on the PCB circuit board 6, and add an appropriate amount of solder to form a firm welding connection between the electrical terminal 5 and the PCB circuit board 6. After welding is completed, perform an appearance inspection and electrical testing to ensure that the welding quality is good, there are no problems such as cold soldering and short circuit, and the chip 2 set on the LED lamp bead 1 can work normally. When the packaging is completed, the chip 2 and the LED lamp bead 1 are accurately assembled and fixed, and then the optical film and the diffuser are installed in turn. During the installation process, ensure that the position and angle of each component are accurate to ensure that the propagation and distribution of light achieve the best effect.

[0031] See also Figures 1 to 7 A plurality of groups of reflective cones 7 are arranged on the PCB circuit board 6, and the plurality of groups of reflective cones 7 are respectively arranged around the outer sides of the plurality of LED lamp beads 1. Specifically, a plurality of groups of reflective cones 7 are arranged, and they can be distributed in a rectangular shape around the LED lamp beads 1. The effect of the reflective cones 7 on the light emitted by the chip 2 is mainly reflected in the reflection and guidance of the light. Due to the special shape and design of the reflective cones 7, the reflective cones 7 can reflect and focus the light emitted by the chip 2, making the light more concentrated and directional, thereby enhancing the luminous effect, improving the light efficiency, and reducing the loss of light.

[0032] Please refer to Figure 4As shown, the curvature of the side of the colloid 3 can be adjusted, according to the surface equation: Z(x,y)=∑[C(ì)*Z(i], i=1 to n, Z(X,y) represents the aspheric shape function, C(i) represents the i-th aspheric coefficient, Z(i) represents the Zernike polynomial corresponding to the i-th coefficient, n represents the highest order used, x, y range is between -1.75 and 1.75, in the case of axisymmetric surfaces, the surface can be represented by a curve on the xz plane. Through the characteristics of the Lambertian light source and the characteristics of the uniform illumination light source, combined with the law of refraction, the partial differential equation of the distance from the surface of the colloid 3 to the center of the chip 2 and the angle corresponding to the distance can be obtained, and the distance corresponding to different angles can be solved by the Runge-Kutta method, and the polar coordinates are converted into rectangular coordinates, which can be obtained as follows Figure 4 The curve shown is the curve of the surface in the xz plane.

[0033] In summary, the device can improve the distribution and diffusion of light through curved surface design, thereby improving the uniformity of the light source. By designing an appropriate curvature, the light can be more effectively scattered over the entire display surface, reducing dark areas and brightness unevenness. The curved surface design can improve the viewing angle characteristics of the light source, allowing the light to be scattered more widely from the side, thereby improving the viewing angle performance of the display and reducing color and brightness unevenness caused by changes in viewing angle.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A side-emitting device with curved light emission, characterized in that: It comprises a PCB circuit board (6), a plurality of LED lamp beads (1) are arranged on the PCB circuit board (6), a chip (2) is installed in the plurality of LED lamp beads (1), a colloid (3) is arranged on the outside of the chip (2), and a semi-reflective cover (4) is arranged on the colloid (3).

2. A side-light emitting device with curved light emission according to claim 1, characterized in that: An electric terminal (5) is provided at one end of the LED lamp bead (1) close to the PCB circuit board (6), and the LED lamp bead (1) is fixed to the PCB circuit board (6) by welding the electric terminal (5) to the PCB circuit board (6).

3. A side-light emitting device with curved light emission according to claim 1, characterized in that: A plurality of groups of reflective cones (7) are arranged on the PCB circuit board (6), and the plurality of groups of reflective cones (7) are respectively arranged around the outside of the plurality of LED lamp beads (1).

4. The side-light emitting device with curved light emission according to claim 1, characterized in that: The curvature of the side of the colloid (3) can be adjusted according to the surface equation: Z(x, y) = ∑[C(ì)*Z(i], i = 1 to n.

5. A side-light emitting device with curved light emission according to claim 4, characterized in that: The Z(X, y) represents the aspheric shape function, C(i) represents the i-th aspheric coefficient, Z(i) represents the Zernike polynomial corresponding to the i-th coefficient, and n represents the highest order used.

6. A side-light emitting device with curved light emission according to claim 5, characterized in that: The x,y range is between -1.75 and 1.75.

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