Condensation type backlight source with light reflection structure

Abstract

The utility model is applicable to the technical field of LED (light-emitting diode) backlight sources, and provides a condensation type backlight source with a light reflection structure, which comprises a shell, a reflection component arranged in the shell, a heat conduction component, a circuit board arranged on the heat conduction component and a positioning frame arranged at the top of the reflection component, a filter lens and a first collecting lens are installed in the positioning frame, and the reflection assembly comprises two inclined plates which are symmetrically arranged and a second collecting lens installed on the inclined plates. According to the device, the problem that the light condensation effect is poor when the backlight source is used is solved, and the effect that the light condensation effect of the backlight source is improved through the combined action of the multiple light condensation lenses and the arrangement of the reflection mechanism facilitating light condensation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of LED backlight technology, and more specifically, it relates to a light-concentrating backlight with a light-reflecting structure. Background Technology

[0002] A backlight is the light source behind a liquid crystal display (LCD). Its function is to provide the external light source required for the display. A focused backlight is a backlight technology that uses a specific design to concentrate light to improve the brightness and uniformity of the light source.

[0003] Chinese patent publication number CN216387692U discloses a parallel focusing backlight. This backlight uses a hollow heat-conducting plate mounted on the bottom of a circuit board. The mounting plate contains a water storage cavity and a miniature water pump, which circulates cooling water from the storage cavity to the heat-conducting plate, improving heat dissipation and extending the lifespan of the LED chips. While this solution improves heat dissipation, the focusing effect relies solely on a single filter, resulting in poor focusing performance in actual use. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a light-concentrating backlight with a light reflection structure that improves the light-concentrating effect of the backlight by the combined action of multiple condensing mirrors and the setting of a reflection mechanism that facilitates light concentration.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A light-concentrating backlight with a light-reflecting structure includes a housing, a reflective component installed inside the housing, a circuit board, and a positioning frame installed on top of the reflective component. A filter and a first condenser lens are installed inside the positioning frame. The reflective component includes two symmetrically arranged inclined plates and a second condenser lens installed on the inclined plates.

[0007] The present invention is further configured such that: the reflective component also includes two connecting plates symmetrically installed on both sides of the circuit board, the top of each connecting plate being connected to an inclined plate, and the second condenser lens and the first condenser lens being symmetrically arranged.

[0008] The present invention is further configured such that the two inclined plates are symmetrically arranged, and each inclined plate has a reflective part on the side wall near the circuit board.

[0009] The present invention is further configured such that the distance between the two inclined plates gradually increases from the end closer to the circuit board to the end farther away from the circuit board.

[0010] The present invention is further configured such that the reflective part is configured as a sawtooth structure along the side wall of the inclined plate.

[0011] The present invention is further configured such that: the positioning frame is disposed through the side wall of the housing, and the filter is installed at the bottom of the first condenser lens.

[0012] The present invention is further configured such that: limiting plates are symmetrically installed at both ends of the positioning frame, and the limiting plates are in contact with the outer wall of the housing.

[0013] By adopting the above technical solution, the positioning frame is limited by the limiting plate, so that the first condenser lens is located on top of the second condenser lens. The light is first focused by the second condenser lens, and then focused a second time by the first condenser lens, thereby enhancing the focusing effect.

[0014] The present invention is further configured such that: a diffuser plate and a dustproof sheet are sequentially installed on the top of the housing, and the diffuser plate is attached to the inner wall of the dustproof sheet.

[0015] The present invention is further configured such that: a plurality of LED beads are mounted on the circuit board, and an mounting plate is mounted on the bottom of the circuit board and connected to the housing.

[0016] The beneficial effects of this utility model are:

[0017] The light generated by the LED beads travels in a straight line and reaches the second condenser lens for focusing. The rest of the light reaches the reflector and is continuously reflected before finally reaching the second condenser lens for focusing. The multiple reflections of the reflector enhance the focusing effect. After the light passes through the second condenser lens for initial focusing, it is further focused by the first condenser lens, thus further enhancing the focusing effect on the original basis. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the light-concentrating backlight with a light-reflecting structure according to the present invention.

[0020] Figure 2 for Figure 1 The diagram shows the light path of light reflection inside a focusing backlight with a light-reflecting structure.

[0021] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Dustproof sheet; 12. Diffuser plate;

[0022] 2. Positioning frame; 21. Filter lens; 22. First condenser lens; 23. Limiting plate;

[0023] 3. Reflecting component; 31. Connecting plate; 32. Inclined plate; 33. Reflecting part; 34. Second condenser lens;

[0024] 4. Circuit board; 41. LED beads; 42. Mounting plate. Detailed Implementation

[0025] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Please refer to Figure 1-2 A light-concentrating backlight with a light-reflecting structure includes a housing 1, a reflective component 3 installed inside the housing 1, a circuit board 4, and a positioning frame 2 installed on top of the reflective component 3. The housing 1 is configured as a hollow structure, and the light source formed by the circuit board 4 can be reflected and concentrated by the combined action of the reflective component 3 and the positioning frame 2.

[0027] Please refer to Figure 1-2 A diffuser plate 12 and a dustproof sheet 11 are sequentially installed on the top of the housing 1. The bottom of the dustproof sheet 11 is connected to the top of the housing 1, and the diffuser plate 12 is attached to the inner wall of the dustproof sheet 11.

[0028] Please refer to Figure 1-2 The circuit board 4 is horizontally positioned. In this example, the circuit board 4 is made of PCB circuit board. Several LED beads 41 are installed on the circuit board 4. The circuit board 4 and the LED beads 41 are electrically connected, which can control the LED beads 41 to emit light. A mounting plate 42 is installed at the bottom of the circuit board 4 and connected to the housing 1. The mounting plate 42 is connected to the bottom of the inner wall of the housing 1.

[0029] Please refer to Figure 1-2 The positioning frame 2 penetrates the side wall of the housing 1, and limit plates 23 are symmetrically installed at both ends of the positioning frame 2, with the limit plates 23 fitting against the outer wall of the housing 1. A filter 21 and a first condenser lens 22 are installed inside the positioning frame 2. The convex surface of the first condenser lens 22 faces upward, and the filter 21 is installed at the bottom of the first condenser lens 22. The limit plates 23 limit the positioning frame 2, positioning the first condenser lens 22 at the top of the second condenser lens 34. Light is first focused by the second condenser lens 34, and then further focused by the first condenser lens 22, thereby enhancing the focusing effect.

[0030] Please refer to Figure 1-2The reflective assembly 3 includes two connecting plates 31 symmetrically mounted on both sides of the circuit board 4, two symmetrically arranged inclined plates 32, and a second condenser lens 34 mounted on the inclined plates 32. The top of each connecting plate 31 is connected to the inclined plate 32. The two inclined plates 32 are symmetrically arranged, and the distance between the two inclined plates 32 gradually increases from the end closer to the circuit board 4 to the end farther away from the circuit board 4. Each inclined plate 32 has a reflective part 33 on the side wall near the circuit board 4, and the reflective part 33 is configured as a sawtooth structure along the side wall of the inclined plate 32. The light generated by the lamp bead 41 can be continuously reflected on the reflective part 33 and finally reach the second condenser lens 34 for focusing. The two ends of the second condenser lens 34 are respectively connected to the top of the two inclined plates 32. The second condenser lens 34 and the first condenser lens 22 are symmetrically arranged, and the convex surface of the second condenser lens 34 is facing downward.

[0031] Specifically, the portion of the light generated by the lamp bead 41 that travels in a straight line directly reaches the second condenser lens 34 for focusing, while the remaining portion reaches the reflector 33 and is continuously reflected on the reflector 33 before finally reaching the second condenser lens 34 for focusing. The focusing effect is enhanced by the multiple reflections of the reflector 33.

[0032] After the light passes through the second condenser lens 34 and completes the initial focusing, it is further focused by the first condenser lens 22, thereby further enhancing its focusing effect.

[0033] 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A light-concentrating backlight with a light-reflecting structure, characterized in that: The device includes a housing (1), a reflective assembly (3) installed inside the housing (1), a circuit board (4), and a positioning frame (2) installed on top of the reflective assembly (3). A filter (21) and a first condenser (22) are installed inside the positioning frame (2). The reflective assembly (3) includes two symmetrically arranged inclined plates (32) and a second condenser (34) installed on the inclined plates (32). The reflective assembly (3) also includes two symmetrically arranged connecting plates (31) on both sides of the circuit board (4). The top of each connecting plate (31) is connected to the inclined plate (32). The second condenser (34) and the first condenser (22) are symmetrically arranged. The two inclined plates (32) are symmetrically arranged. Each inclined plate (32) has a reflective part (33) on the side wall near the circuit board (4). The distance between the two inclined plates (32) gradually increases from the end near the circuit board (4) to the end away from the circuit board (4). The reflective part (33) is configured as a sawtooth structure along the side wall of the inclined plate (32).

2. A light-concentrating backlight with a light-reflecting structure according to claim 1, characterized in that: The positioning frame (2) is installed through the side wall of the housing (1), and the filter (21) is installed at the bottom of the first condenser (22).

3. A light-concentrating backlight with a light-reflecting structure according to claim 2, characterized in that: The positioning frame (2) is symmetrically equipped with limiting plates (23) at both ends, and the limiting plates (23) are attached to the outer wall of the shell (1).

4. A light-concentrating backlight with a light-reflecting structure according to claim 1, characterized in that: A diffuser plate (12) and a dustproof sheet (11) are sequentially installed on the top of the housing (1), and the diffuser plate (12) is attached to the inner wall of the dustproof sheet (11).

5. A light-concentrating backlight with a light-reflecting structure according to claim 1, characterized in that: A number of LED beads (41) are installed on the circuit board (4), and an mounting plate (42) is installed at the bottom of the circuit board (4) and connected to the housing (1).

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