LED light source shaped like Chinese character'pin 'and LED display device

Abstract

The utility model discloses an LED light source shaped like a Chinese character'pin ', which comprises a support and a light transmitting cup, a light reflecting cavity is arranged in the support, at least three light emitting chips are arranged in the light reflecting cavity, and the at least three light emitting chips are arranged at intervals in a shape like a Chinese character'pin' or in a shape similar to a Chinese character'pin '; the light-transmitting cup is arranged on the support in a covering mode, at least three convex lenses are arranged on the light-transmitting cup, the convex lenses correspond to the light-emitting chips in a one-to-one mode, and light emitted by the light-emitting chips is emitted outwards through the convex lenses right opposite to the light-emitting chips. The utility model further discloses an LED display device which comprises an LED displayer and the LED light source shaped like the Chinese character'pin ', and the LED light source shaped like the Chinese character'pin' is arranged in the LED displayer. According to the utility model, the light mixing effect can be improved, and the overall size is small.

Description

Technical Field

[0001] The utility model relates to the technical field of LED devices, in particular to a triangular LED light source and an LED display device. Background Art

[0002] At present, the relevant LED light sources include a bracket, a lens and light-emitting chips of different colors. The light-emitting chips are embedded in the light source cavity of the bracket, and each light-emitting chip emits light outward through the corresponding lens. However, at present, the light-emitting chips of most LED light sources are arranged in a straight line, resulting in a large space occupied by the convex lenses arranged in the same straight line, thus making the overall volume of the product large. At the same time, when the convex lenses are arranged in a straight line and are close to each other, the light emitted by the middle light-emitting chip is easily emitted from the adjacent convex lenses and mixed with the light of other light-emitting chips, greatly affecting the light mixing effect. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a small triangular LED light source and an LED display device, which can improve the light mixing effect and have a small overall volume.

[0004] To solve the above technical problem, the utility model provides a triangular LED light source, which includes a bracket and a light-transmitting cup. A reflective cavity is arranged in the bracket, and at least three light-emitting chips are arranged in the reflective cavity at intervals in a triangular or quasi-triangular shape. The light-transmitting cup is covered on the bracket, and at least three convex lenses are arranged on the light-transmitting cup. The convex lenses are arranged in one-to-one correspondence with the light-emitting chips, and the light emitted by the light-emitting chips is emitted outward through the corresponding convex lenses.

[0005] As an improvement of the above solution, the bracket includes a frame body and a frame arranged on the frame body. Pins are arranged on the frame body. The reflective cavity is arranged at one end of the frame away from the frame body, and the conductive parts of the light-emitting chips pass through the frame and are electrically connected to the corresponding pins.

[0006] As an improvement of the above solution, the number of the light-emitting chips is three, and each light-emitting chip is close to the corresponding inner side wall of the reflective cavity. The number of the convex lenses is three.

[0007] As an improvement of the above solution, the light-emitting colors of the multiple light-emitting chips are the same or at least one is different. Among them, the light-emitting combination of the three light-emitting chips is RGB combination or RRB combination or RRR combination or RRG combination or GGB combination or GGG combination or RBB combination or BBB combination or GBB combination.

[0008] As an improvement of the above solution, the convex lens is circular or elliptical or square.

[0009] As an improvement of the above solution, the convex lens is an integral part made of glass or plastic.

[0010] As an improvement of the above solution, the centroid of the convex lens and the centroid of the light-emitting chip are on the same axis, or the centroid of the convex lens and the centroid of the light-emitting chip are eccentrically arranged.

[0011] As an improvement of the above solution, the shapes and sizes of multiple convex lenses are the same or at least one is different.

[0012] As an improvement of the above solution, the inner wall surface of the reflective cavity is a reflective surface, and the reflective surface is made of a reflective material.

[0013] The present utility model also provides an LED display device, including an LED display and the above-mentioned triangular LED light source, and the triangular LED light source is arranged in the LED display.

[0014] The beneficial effects of implementing the present utility model are as follows:

[0015] The light-emitting chips provided by the present utility model are arranged in a triangular or quasi-triangular interval arrangement, so that the convex lenses corresponding to the light-emitting chips are also arranged in a triangular or quasi-triangular arrangement, so as to set the convex lenses and their sizes to the maximum extent within a limited space, which can effectively reduce the space occupied by the convex lenses, make the overall volume of the product small, and effectively meet the market demand for small LED light sources; at the same time, the light emitted by the light-emitting chips is subjected to primary light distribution under the action of the reflective cavity, and the light emitted by the light-emitting chips is mixed after being subjected to secondary light distribution by the convex lenses facing them, effectively reducing the light emitted through other convex lenses and affecting the light mixing effect of the overall light source, thereby being able to greatly improve the coincidence degree of the light distribution curve and improve the light mixing effect. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the triangular LED light source of the present utility model;

[0017] Figure 2 is a schematic side view structural diagram of the triangular LED light source of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the light-transmitting lens of the present utility model Figure 1 ;

[0019] Figure 4 is a schematic structural diagram of the light-transmitting lens of the present utility model Figure 2 . Detailed Embodiments

[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 2 As shown, the specific embodiment of the utility model provides a "pink"-shaped LED light source, including a bracket 1 and a light-transmitting cup 2. The bracket 1 is provided with a reflective cavity 3. The reflective cavity 3 is provided with three light-emitting chips 4. The three light-emitting chips 4 are arranged in a "pink" shape or in a "pink-like" shape. The light-transmitting cup 2 is covered on the bracket 1. At least three convex lenses 5 are provided on the light-transmitting cup 2. The convex lenses 5 are arranged in a one-to-one correspondence with the light-emitting chips 4, that is, the convex lenses 5 are also arranged in a "pink" shape or in a "pink-like" shape, so that the convex lenses 5 and the size of the convex lenses 5 are arranged to the maximum extent in a limited space, which can effectively reduce the space occupied by the convex lenses 5, make the overall volume of the product small, and effectively meet the market demand for small LED light sources.

[0022] The inner wall surface of the reflective cavity 3 is a reflective surface, and the reflective surface is made of a reflective material. The light distribution is completed for the light emitting chip 4 through the reflection effect of the reflective surface. The light emitted by the light emitting chip 4 completes a light distribution in the reflective cavity 3. Each light emitting chip 4 is directly opposite to a convex lens 5, and the centroid of the convex lens 5 and the centroid of the light emitting chip 4 are on the same axis. At the same time, each light emitting chip 4 is close to the corresponding inner wall of the reflective cavity 3, so that the spacing between the light emitting chips 4 is large, and the light between the light emitting chips 4 is avoided to the maximum extent. The light emitted by the light emitting chip 4 is not easy to be emitted through other convex lenses 5, and the interference of color lights emitted by different light emitting chips 4 is reduced, which greatly reduces the impact on the mixing effect of the overall light source. By making most of the light emitted by the light emitting chip 4 complete secondary light distribution and then mix through its corresponding convex lens 5, the overlap of the light distribution curve can be greatly improved, and the mixing effect can be improved.

[0023] Preferably, in order to meet the demand for products with less upward light from LEDs, the traditional method is to block the light by setting a black baffle in the LED light source structure. The utility model can meet the above demand by setting the centroid of the convex lens 5 and the centroid of the light-emitting chip 4 as an eccentric structure, without the need to set an additional baffle. The utility model can reduce the upward emission of light by setting a corresponding eccentricity between the convex lens 5 and the light-emitting chip 4, and through secondary light distribution, more reasonably distribute light within the visible angle range, reduce useless light energy loss, and improve light efficiency, so that it can be better applied to LED products with less upward light from LEDs, such as outdoor LED display screens.

[0024] Furthermore, the bracket 1 includes a frame body 6 and a frame body 7 disposed on the frame body 6, and the frame body 6 is provided with pins 8; the reflective cavity 3 is disposed in one end of the frame body 7 away from the frame body 6, and the conductive part of the light-emitting chip 4 passes through the frame body 7 and is electrically connected to the corresponding pins 8, and is connected to the external power supply end through the pins 8 to realize the power-on operation of the light-emitting chip 4. Among them, the light-transmitting cup 2 is covered on the frame body 7, and the light-transmitting cup 2 is in the shape of a square cylinder.

[0025] Preferably, the luminous colors of the multiple light-emitting chips 4 are the same or at least one is different, wherein the luminous combination of the three light-emitting chips 4 is preferably an RGB combination, or an RRB combination, or an RRR combination, or an RRG combination, or a GGB combination, or a GGG combination, or an RBB combination, or a BBB combination, or a GBB combination.

[0026] Furthermore, because the convex lenses 5 of the present invention are arranged in a shape of a triangle or a quasi-square triangle, the size of the outer arc of the convex lenses 5 can be larger than that of the convex lenses 5 arranged in a straight line in the same space, that is, the size range of the convex lenses 5 is wider. According to the light distribution requirements of the light-emitting chips 4 of different colors and wavelengths, convex lenses 5 of corresponding shapes and sizes can be more reasonably arranged in a limited space to enhance the overall light mixing effect. Figure 3 As shown in 3a and 3b, in the y-axis direction, the lens size can be increased, thereby effectively improving the light extraction efficiency and reducing the difficulty of lens processing; through the distribution and arrangement structure in a triangular shape or a quasi-triangular shape, it is also easier to design convex lenses 5 with different x- and y-axis lengths in the setting space according to the brightness wavelength characteristics of the chip. Figure 4 As shown, in order to improve the light extraction efficiency, the edge portion of at least one convex lens 5 can be appropriately embedded in other convex lenses 5 to further increase the size of the convex lens 5 within the setting space, so that the light-emitting chip 4 can effectively improve the light extraction efficiency and light brightness after secondary light distribution by the convex lens 5, thereby improving the light extraction effect; since the light emitted by the light-emitting chip 4 is mainly concentrated at the center of the lens, and the proportion and intensity emitted at the edge (especially at the edge that is not in the horizontal and vertical position) are low, almost negligible, and have almost no effect on the overall light mixing effect. The embedding degree of the edge portion of the convex lens 5 can be adjusted according to actual needs. For example, in application scenarios where the requirements for the light mixing effect are relatively low and the requirements for the light extraction efficiency are relatively high, the embedding degree of the edge portion of the convex lens 5 can be increased accordingly.

[0027] Secondly, the shapes and sizes of the plurality of convex lenses 5 are the same or at least one of them is different, which can actually be adjusted according to the light emitting chip 4 of the adopted light emitting combination.

[0028] Preferably, the convex lens 5 is circular, oval or square.

[0029] Preferably, the convex lens 5 is an integral part made of glass or plastic. Secondly, the light-transmitting cup 2 is made of the same material as the convex lens 5.

[0030] The present utility model also provides an LED display device, which includes an LED display and the above-mentioned triangular LED light source, and the triangular LED light source is arranged in the LED display. Since the above-mentioned triangular LED light source has the above-mentioned technical effects, the LED display device including the above-mentioned triangular LED light source should also have the above-mentioned technical effects, which will not be elaborated one by one here. Among them, the LED display device is preferably an LED traffic information board or an outdoor LED display screen, but it is not limited thereto, and it can also be other LED display products using the above-mentioned triangular LED light source.

[0031] In summary, the light-emitting chips provided in the present utility model are arranged in a triangular or quasi-triangular pattern at intervals, so that there is a corresponding distance between the light-emitting chips, and the light emitted by the light-emitting chips is maximally prevented from interfering with each other. Correspondingly, the convex lenses corresponding to the light-emitting chips are also arranged in a triangular or quasi-triangular pattern, so as to set the convex lenses and the sizes of the convex lenses to the maximum extent within a limited space, which can effectively reduce the space occupied by the convex lenses, make the overall volume of the product small, and effectively meet the market demand for small LED light sources;

[0032] At the same time, the light emitted by the light-emitting chips is subjected to primary light distribution under the action of the reflecting cavity, and the light emitted by the light-emitting chips is mixed after being subjected to secondary light distribution by the convex lens facing it, effectively reducing the light emitted by other convex lenses and affecting the light mixing effect of the overall light source, thereby being able to greatly improve the coincidence degree of the light distribution curve and improve the light mixing effect.

[0033] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A triangular LED light source, characterized in that, It includes a bracket and a light-transmitting cup. A reflective cavity is provided inside the bracket, and at least three light-emitting chips are provided in the reflective cavity. At least three of the light-emitting chips are arranged in a triangular or quasi-triangular pattern at intervals. The light-transmitting cup is covered on the bracket. At least three convex lenses are provided on the light-transmitting cup. The convex lenses are arranged in one-to-one correspondence with the light-emitting chips. The light emitted by the light-emitting chips is emitted outward through the corresponding convex lenses.

2. The inscribed LED light source according to claim 1, characterized in that: The bracket includes a frame plate body and a frame body provided on the frame plate body. Pins are provided on the frame plate body. The reflective cavity is provided inside one end of the frame body away from the frame plate body. The conductive parts of the light-emitting chips pass through the frame body and are electrically connected to the corresponding pins.

3. The inscribed LED light source according to claim 1, characterized in that: The number of the light-emitting chips is three. Each light-emitting chip is close to the corresponding inner side wall of the reflective cavity. The number of the convex lenses is three.

4. The inscribed LED light source according to claim 3, characterized in that: The light-emitting colors of multiple light-emitting chips are the same or at least one is different. Among them, the light-emitting combinations of the three light-emitting chips are RGB combination or RRB combination or RRR combination or RRG combination or GGB combination or GGG combination or RBB combination or BBB combination or GBB combination.

5. The inscribed-on-a-pixel LED light source according to any one of claims 1 to 4, characterized in that: The convex lens is circular or oval or square.

6. The inscribed LED light source according to any one of claims 1 to 4, characterized in that: The convex lens is an integral part made of glass material or plastic material.

7. The inscribed LED light source according to any one of claims 1 to 4, characterized in that: The centroid of the convex lens and the centroid of the light-emitting chip are on the same axis, or the centroid of the convex lens and the centroid of the light-emitting chip are eccentrically arranged.

8. The inscribed LED light source according to any one of claims 1 to 4, characterized in that: The shapes and sizes of multiple convex lenses are the same or at least one is different.

9. The inscribed LED light source according to claim 1, characterized in that: The inner wall surface of the reflective cavity is a reflective surface, and the reflective surface is made of a reflective material.

10. An LED display device, characterized in that: It includes an LED display and a triangular LED light source according to any one of claims 1 to 9. The triangular LED light source is provided in the LED display.

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