Light-emitting module for controlling light angle

Abstract

The utility model discloses a light emitting module that controls light angle, include: PCBA board, the at least two LED lamp pearl of PCBA board setting, the reflection film that covers in PCBA board top, the transparent light guide plate that covers in reflection film top and the light -proof film that covers in transparent light guide plate top, and transparent light guide plate is inside the evenly distributed microstructure dot in the inside of light -proof film inboard, reflection film is located between the first blocking mouth that sets up between adjacent LED lamp pearl, and the second blocking mouth is seted up to the first blocking mouth one side opposite transparent light guide plate, the utility model has the following advantages: through microstructure dot on transparent light guide plate, makes the light scattering effect at this part transparent light guide plate, if single LED lamp pearl light emitting, can make the light emitting angle small, control the length of bright light, make the brightness of single LED lamp pearl two sides and the middle consistent, through microstructure dot scattering, the transparent light guide plate track a circle even light emission at microstructure dot place of O type distribution.

Description

Technical Field

[0001] This utility model relates to the field of light-emitting module technology, specifically to a light-emitting module for controlling the angle of light. Background Technology

[0002] LED light-emitting modules are typically used in lighting, decoration, or indicator devices; however, currently available LED light-emitting modules (such as...) Figure 5 LEDs emit light, but the light is scattered randomly within the transparent light guide material, resulting in an unpredictable light-emitting angle. The light is brightest at the center of the LED, gradually dimming towards the edges, thus affecting the overall light emission effect. Therefore, a light-emitting module that controls the light angle is provided to solve these problems. Utility Model Content

[0003] To address the problems mentioned in the background art, the technical solution adopted by this utility model is: a light-emitting module for controlling the light angle, comprising: a PCBA board, at least two LED beads disposed on the PCBA board, a reflective film covering the top of the PCBA board, a transparent light guide plate covering the top of the reflective film, and a light-shielding film covering the top of the transparent light guide plate. The transparent light guide plate has microstructure dots evenly distributed inside the light-shielding film. The reflective film has a first blocking opening between adjacent LED beads. The transparent light guide plate has a second blocking opening on the side opposite to the first blocking opening. The first blocking opening and the second blocking opening are filled with light-absorbing blocks.

[0004] As a preferred embodiment of this utility model, the inner side of the second blocking port, except for the side with microstructure dots, is coated with a light-shielding paint, and the light-shielding paint is a black paint.

[0005] As a preferred embodiment of this utility model, the reflective film has a first lamp slot on the side facing the LED lamp bead, and the transparent light guide plate has a second lamp slot on the side facing the first lamp slot. The LED lamp bead is located inside the first lamp slot and the second lamp slot.

[0006] As a preferred embodiment of this utility model, the light-shielding film is black, and the reflective film, the transparent light guide plate, and the light-shielding film all have O-shaped cutouts in the middle.

[0007] As a preferred embodiment of this utility model, the microstructure dots are distributed along the O-shaped cutouts of the transparent light guide plate, and the O-shaped cutouts in the middle of the light-shielding film are larger than the O-shaped cutouts of the transparent light guide plate.

[0008] In a preferred embodiment of this invention, the LED beads are distributed in an O-shape on the PCBA board, and the light-absorbing block is black.

[0009] The present invention has the following advantages: The present invention uses microstructure dots on the transparent light guide plate to make light scattering effect at this part of the transparent light guide plate. If a single LED bead emits light, the light emission angle can be small, the length of the light can be controlled, and the brightness on both sides and the middle of the single LED bead can be consistent. Through the scattering of microstructure dots, the light emission is uniform around the transparent light guide plate at the O-shaped distribution of microstructure dots.

[0010] By using the first and second blocking ports in conjunction with the black light-absorbing block, the light transmission between adjacent LED beads of the transparent light guide plate can be blocked, and the light emission angle of the LED beads can be changed so that the different colors of the light sources of adjacent LED beads will not mix and interfere with each other. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the disassembled structure of the reflective film and the light-absorbing block according to a preferred embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of the disassembled structure of a preferred embodiment of the present invention;

[0014] Figure 4 This is a preferred embodiment of the present utility model. Figure 3 Enlarged schematic diagram of structure A;

[0015] Figure 5 This is a schematic diagram of an existing LED light-emitting module structure.

[0016] Explanation of reference numerals in the attached diagram: 1. PCBA board; 2. Reflective film; 3. Transparent light guide plate; 4. Light-shielding film; 5. Microstructure dots; 6. First blocking opening; 7. Second blocking opening; 8. Light-shielding coating; 9. First lamp slot opening; 10. Second lamp slot opening; 11. LED lamp bead; 12. Light-absorbing block. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Please refer to the following: Figures 1-4 This utility model discloses a light-emitting module for controlling the angle of light, comprising: a PCBA board 1, at least two LED beads 11 disposed on the PCBA board 1, a reflective film 2 covering the top of the PCBA board 1, a transparent light guide plate 3 covering the top of the reflective film 2, and a light-shielding film 4 covering the top of the transparent light guide plate 3. The transparent light guide plate 3 has uniformly distributed microstructure dots 5 inside the light-shielding film 4. The reflective film 2 has a first blocking opening 6 between adjacent LED beads 11, and the transparent light guide plate 3 has a second blocking opening 7 on the side opposite to the first blocking opening 6. Light-absorbing blocks 12 are filled inside the first blocking opening 6 and the second blocking opening 7. Each LED bead 11 emits a different color of light.

[0021] The inner side of the second blocking opening 7, except for the side with microstructure dots 5, is coated with a light-shielding paint 8, which is black. The reflective film 2 has a first lamp slot 9 on the side facing the LED bead 11, and the transparent light guide plate 3 has a second lamp slot 10 on the side facing the first lamp slot 9. This allows the LED bead 11 to transmit light to the transparent light guide plate 3, and the reflective film 2 reflects the light from the transparent light guide plate 3. The LED bead 11 is located at the first lamp slot 9 and the second lamp slot 10. Inside the O-shaped cutout, the light-shielding film 4 is black. Therefore, only the microstructure dots 5 distributed along the O-shaped cutout of the transparent light guide plate 3 are exposed and emit light. The reflective film 2, the transparent light guide plate 3, and the light-shielding film 4 all have O-shaped cutouts in their middle sections. The microstructure dots 5 are distributed along the O-shaped cutout of the transparent light guide plate 3. The O-shaped cutout in the middle of the light-shielding film 4 is larger than the O-shaped cutout of the transparent light guide plate 3. The LED beads 11 are distributed in an O-shape on the PCBA board 1, and the light-absorbing blocks 12 are black. This allows the black light-absorbing blocks 12 located in the first blocking opening 6 and the second blocking opening 7 between adjacent LED beads 11 to block light transmission, change the emission angle of the LED beads 11, reduce the gradient, and prevent the different color light sources of adjacent LED beads 11 from mixing and interfering.

[0022] Specifically, the microstructure dots 5 on the transparent light guide plate 3 create a scattering effect on this part of the transparent light guide plate 3. If a single LED bead 11 emits light, the light emission angle can be small, the length of the light can be controlled, and the brightness on both sides of the single LED bead 11 can be consistent with the middle, and the light emission from both sides can also be sharp. If multiple LED beads 11 are lit together, the light can be evenly emitted through the scattering of the microstructure dots 5, making the entire exposed O-shaped racetrack of the transparent light guide plate 3 emit light uniformly.

[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0024] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A light-emitting module for controlling the angle of light, characterized in that, include: At least two LED beads (11) are provided on the PCBA board (1), a reflective film (2) is covered on the top of the PCBA board (1), a transparent light guide plate (3) is covered on the top of the reflective film (2), and a light shielding film (4) is covered on the top of the transparent light guide plate (3). The transparent light guide plate (3) is located inside the light shielding film (4) and has microstructure dots (5) evenly distributed inside. The reflective film (2) has a first blocking opening (6) between adjacent LED beads (11). The transparent light guide plate (3) has a second blocking opening (7) on the side facing the first blocking opening (6). The first blocking opening (6) and the second blocking opening (7) are filled with light-absorbing blocks (12).

2. The light-emitting module for controlling the light angle as described in claim 1, characterized in that, The inner side of the second blocking port (7) is coated with a light-shielding paint (8) except for the side with microstructure dots (5), and the light-shielding paint (8) is a black paint.

3. The light-emitting module for controlling the light angle as described in claim 1, characterized in that, The reflective film (2) has a first lamp slot (9) on the side facing the LED lamp bead (11), and the transparent light guide plate (3) has a second lamp slot (10) on the side facing the first lamp slot (9). The LED lamp bead (11) is located inside the first lamp slot (9) and the second lamp slot (10).

4. The light-emitting module for controlling the light angle as described in claim 1, characterized in that, The light-shielding film (4) is black, and the reflective film (2), the transparent light guide plate (3), and the light-shielding film (4) all have O-shaped cutouts in the middle.

5. The light-emitting module for controlling the light angle as described in claim 1, characterized in that, The microstructure dots (5) are distributed along the O-shaped cutouts of the transparent light guide plate (3), and the O-shaped cutouts in the middle of the light-shielding film (4) are larger than the O-shaped cutouts of the transparent light guide plate (3).

6. The light-emitting module for controlling the light angle as described in claim 1, characterized in that, The LED beads (11) are distributed in an O-shape on the PCBA board (1), and the light-absorbing block (12) is black.

Images