Light guide type surface light source

Abstract

The utility model discloses a light guide type surface light source, belongs to the technical field of light sources, and aims to solve the technical problems that a light guide type surface light source in the prior art is low in flexibility and is not beneficial to backlight detection of products with different heights. The light guide type area light source comprises an area light source body and a supporting frame used for supporting the area light source body. The supporting frame comprises a vertically-arranged fixing sleeve arm, an adjusting arm movably arranged at the top end of the fixing sleeve arm in a penetrating mode and a positioning mechanism arranged at the top end of the fixing sleeve arm and used for positioning the adjusting arm, and the top end of the adjusting arm is connected with the area light source body in an assembling mode. A pair of fixing sleeve arms are arranged side by side, the bottom ends of the pair of fixing sleeve arms are jointly and fixedly connected with a mounting base, and each positioning mechanism comprises a U-shaped shell sleeve fixed to the side wall of the top end of the corresponding fixing sleeve arm and a push plate movably embedded in the U-shaped shell sleeve. The light guide type surface light source is reasonable in structure, has a good surface light source effect, is high in flexibility, and can meet the detection requirements of products with different heights.

Description

Technical Field

[0001] The utility model belongs to the technical field of light sources, and in particular relates to a light-guiding surface light source. Background Art

[0002] The light guide type surface light source is a special light source design. Its characteristics are that the LEDs are distributed all around, and the light guide plate has tiny reflection surfaces and scattering points inside. The light passes through the light guide plate to form diffuse light, thus obtaining a uniform lighting effect. Compared with general backlights, the light source is thinner overall, easier to install, and more flexible because the LEDs are arranged all around.

[0003] Light-guiding surface light sources have important application value in industrial inspection, machine vision, lighting engineering and other fields, such as solar panel size detection, transparent or translucent surface dirt inspection, and areas with limited installation space. However, the commonly used light-guiding surface light sources are fixed on the lamp holder with a fixed structure. When backlight inspection of products at different heights is required, it is often necessary to lift the products and move them for inspection, which is not convenient to use. For this reason, the present application proposes a light-guiding surface light source. Utility Model Content

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a light-guiding surface light source, aiming to solve the technical problem that the light-guiding surface light source in the prior art has low flexibility and is not conducive to backlight detection of products at different heights.

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides a light-guiding surface light source, including a surface light source body and a support frame for supporting the surface light source body; the support frame includes: a vertically arranged fixed sleeve arm, an adjustment arm movably arranged on the top of the fixed sleeve arm, and a positioning mechanism arranged on the top of the fixed sleeve arm for positioning the adjustment arm, and the top of the adjustment arm is assembled and connected to the surface light source body.

[0007] Through the above structural manner, the fixed sleeve arm and the adjustment arm cooperate to support the main body of the surface light source, and when the positioning mechanism positions the adjustment arm, the support height of the main body of the surface light source can be adjusted to facilitate backlight detection of products of different heights.

[0008] Preferably, a pair of the fixed sleeve arms are arranged side by side, and the bottom ends of the pair of fixed sleeve arms are commonly fixedly connected to a mounting base.

[0009] Preferably, the positioning mechanism includes a U-shaped shell fixed on the top side wall of the fixed sleeve arm, a push plate movably embedded in the U-shaped shell, and a positioning pin fixed on the side of the push plate facing the fixed sleeve arm. The positioning pin passes through the fixed sleeve arm, and the adjusting arm is provided with a plurality of positioning holes that can accommodate the positioning pin to pass through.

[0010] Preferably, a spring is provided between a side of the push plate away from the fixed sleeve arm and an inner end wall of the U-shaped shell, and the push plates in the two groups of the positioning mechanisms are connected as one body.

[0011] Preferably, a limiting slide rod is inserted into the spring, one end of the limiting slide rod is fixedly connected to the push plate, and the other end of the limiting slide rod movably penetrates the end wall of the U-shaped shell.

[0012] Preferably, the surface light source body includes a back panel, a frame arranged on one side of the back panel, a surface light source assembly embedded in the frame, and a mask mounted on the frame, a light-transmitting plate is embedded in the mask, and connecting ear blocks are arranged on the surrounding walls of the mask and the back panel, and two corresponding connecting ear blocks are connected by bolts.

[0013] Preferably, the surface light source assembly comprises LED lamps installed on the four inner walls of the frame, and a reflector, a light guide plate and a light diffusion plate sequentially embedded in the frame, and the LED lamps are aligned with the sides of the light guide plate.

[0014] Beneficial Effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model uses the reflective plate and the light diffusion plate arranged on both sides of the light guide plate. When the reflective plate reflects the light, the light emitted from the light guide plate is reflected back to the light transmissive plate, which can improve the light utilization efficiency. When the light diffusion plate diffuses the light, the light can be uniformized, making the lighting effect more uniform. Finally, the light is evenly emitted from the surface of the light guide plate to form a surface light source with uniform, soft and comfortable light, which is more conducive to product detection.

[0017] In the utility model, through the cooperation of a pair of fixed sleeve arms and adjusting arms, the main body of the surface light source can be supported, and by pushing the push plate to make the positioning pin rod disengage from the positioning hole, the main body of the surface light source can be lifted and pulled for height adjustment. After releasing the push plate, the spring force pushes the push plate to make the positioning pin rod insert into the corresponding positioning hole, so that the height of the main body of the surface light source can be positioned. The structure is reasonable and flexible, which can meet the product inspection needs of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the main body of the surface light source in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the support frame in the utility model;

[0022] Figure 4 For this utility model Figure 3 A in the enlarged view;

[0023] Figure 5 It is a structural schematic diagram of the surface light source assembly in the utility model.

[0024] The marks in the attached drawings are: 1. surface light source body; 2. support frame; 3. back plate; 4. frame; 5. surface light source assembly; 6. mask; 7. light-transmitting plate; 8. fixing sleeve arm; 9. adjusting arm; 10. mounting base; 11. positioning mechanism; 12. push plate; 13. positioning pin rod; 14. positioning hole; 15. U-shaped shell; 16. spring; 17. limiting slide rod; 18. LED lamp; 19. light guide plate; 20. reflector; 21. light diffusion plate; 22. connecting ear block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This embodiment provides a light-guiding surface light source, and its structural schematic diagram is as follows: Figure 1 - Figure 5As shown, it includes a surface light source body 1 and a support frame 2 for supporting the surface light source body 1; the support frame 2 includes: a vertically arranged fixed sleeve arm 8, an adjusting arm 9 movably arranged on the top of the fixed sleeve arm 8, and a positioning mechanism 11 arranged on the top of the fixed sleeve arm 8 for positioning the adjusting arm 9, the top of the adjusting arm 9 is assembled and connected with the surface light source body 1, wherein, by utilizing the cooperation of the fixed sleeve arm 8 and the adjusting arm 9, the surface light source body 1 can be supported, and when the adjusting arm 9 is positioned by the positioning mechanism 11, the supporting height of the surface light source body 1 can be adjusted.

[0027] As a preferred technical solution in this embodiment, the surface light source body 1 includes a back plate 3, a frame 4 arranged on one side of the back plate 3, a surface light source assembly 5 embedded in the frame 4, and a mask 6 mounted on the frame 4. A light-transmitting plate 7 is embedded in the mask 6. Connecting ear blocks 22 are arranged on the surrounding walls of the mask 6 and the back plate 3. The corresponding two connecting ear blocks 22 are bolted together. The surface light source assembly 5 includes an LED lamp 18 installed on the surrounding walls inside the frame 4, and a reflector 20, a light guide plate 19 and a light diffusion plate 21 sequentially embedded in the frame 4. The LED lamp 18 is aligned with the side of the light guide plate 19, and the LED lamp 18 emits light into the On the side of the light guide plate 19, when the light enters the light guide plate 19, the tiny reflecting surfaces and scattering points inside the light guide plate 19 reflect the light, causing the light to propagate inside the light guide plate 19 and scatter the light to the surface of the light guide plate 19, thereby achieving uniform distribution of the light. Under the reflection of the light by the reflective plate 20, the light emitted from the light guide plate 19 is reflected back to the light transmitting plate 7, thereby improving the efficiency of light utilization. Under the diffusion of the light by the light diffusion plate 21, the light can be homogenized, making the lighting effect more uniform. Finally, the light is evenly emitted from the surface of the light guide plate 19, forming a surface light source with uniform, soft and comfortable light, which can be used for product detection.

[0028] As a preferred technical solution in this embodiment, a pair of fixed sleeve arms 8 are arranged side by side, and the bottom ends of the pair of fixed sleeve arms 8 are fixedly connected to the mounting base 10. The positioning mechanism 11 includes a U-shaped shell 15 fixed on the top side wall of the fixed sleeve arm 8, a push plate 12 movably embedded in the U-shaped shell 15, and a positioning pin 13 fixed on the side of the push plate 12 facing the fixed sleeve arm 8. The positioning pin 13 penetrates the fixed sleeve arm 8, and a plurality of positioning holes 14 that can accommodate the positioning pin 13 are opened on the adjustment arm 9. A spring 16 is arranged between the side of the push plate 12 away from the fixed sleeve arm 8 and the inner end wall of the U-shaped shell 15. The push plates 12 in the two sets of positioning mechanisms 11 are connected as one body. Pushing the push plate 12 disengages the positioning pin 13 from the positioning hole 14, and the surface light source body 1 can be lifted and pulled for height adjustment. After releasing the push plate 12, the spring 16 pushes the push plate 12 to insert the positioning pin 13 into the corresponding positioning hole 14, so that the surface light source body 1 can be positioned in height.

[0029] Furthermore, in this embodiment, a limiting slide rod 17 is passed through the spring 16, one end of the limiting slide rod 17 is fixedly connected to the push plate 12, and the other end of the limiting slide rod 17 movably passes through the end wall of the U-shaped shell 15, so as to guide and limit the push plate 12 to prevent the push plate 12 from detaching from the U-shaped shell 15.

[0030] Working principle: When in use, the LED lamp 18 emits light into the side of the light guide plate 19. When the light enters the light guide plate 19, the tiny reflective surfaces and scattering points inside the light guide plate 19 reflect the light, causing the light to propagate inside the light guide plate 19 and scatter to the surface of the light guide plate 19, thereby achieving uniform distribution of light. In addition, under the reflection of the reflective plate 20, the light emitted from the light guide plate 19 is reflected back to the light-transmitting plate 7 to improve the utilization efficiency of light. Under the diffusion of the light by the light diffuser 21, the light can be homogenized to make the lighting effect more uniform. Finally, the light is evenly emitted from the surface of the light guide plate 19 to form a surface light source with uniform, soft and comfortable light for product detection. Furthermore, by utilizing the cooperation of a pair of fixed sleeve arms 8 and adjusting arms 9, the surface light source body 1 can be supported, and by pushing the push plate 12 to disengage the positioning pin 13 from the positioning hole 14, the surface light source body 1 can be lifted for height adjustment. After releasing the push plate 12, the elastic force of the spring 16 pushes the push plate 12 to insert the positioning pin 13 into the corresponding positioning hole 14, so that the surface light source body 1 can be highly positioned. The structure is reasonable, the flexibility is high, and it has a good surface light source effect.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-guiding surface light source, characterized in that: include: A surface light source body (1) and a support frame (2) used for supporting the surface light source body (1); The support frame (2) comprises: A vertically arranged fixed sleeve arm (8), an adjusting arm (9) movably inserted through the top end of the fixed sleeve arm (8), and a positioning mechanism (11) arranged at the top end of the fixed sleeve arm (8) for positioning the adjusting arm (9); the top end of the adjusting arm (9) is assembled and connected to the surface light source body (1).

2. A light-guiding surface light source according to claim 1, characterized in that: A pair of the fixed sleeve arms (8) are arranged side by side, and the bottom ends of the pair of fixed sleeve arms (8) are commonly fixedly connected to a mounting base (10).

3. The light-guiding surface light source according to claim 1, characterized in that: The positioning mechanism (11) comprises a U-shaped shell (15) fixed on the top side wall of the fixed sleeve arm (8), a push plate (12) movably embedded in the U-shaped shell (15), and a positioning pin rod (13) fixed on the side of the push plate (12) facing the fixed sleeve arm (8), the positioning pin rod (13) passes through the fixed sleeve arm (8), and the adjusting arm (9) is provided with a plurality of positioning holes (14) capable of accommodating the positioning pin rod (13) to pass through.

4. The light-guiding surface light source according to claim 3, characterized in that: A spring (16) is arranged between a side of the push plate (12) away from the fixed sleeve arm (8) and an inner end wall of the U-shaped shell (15), and the push plates (12) in the two groups of the positioning mechanisms (11) are connected as one body.

5. The light-guiding surface light source according to claim 4, characterized in that: A limiting slide rod (17) is inserted into the spring (16), one end of the limiting slide rod (17) is fixedly connected to the push plate (12), and the other end of the limiting slide rod (17) movably penetrates the end wall of the U-shaped shell (15).

6. The light-guiding surface light source according to claim 1, characterized in that: The surface light source body (1) comprises a back plate (3), a frame (4) arranged on one side of the back plate (3), a surface light source assembly (5) embedded in the frame (4), and a face mask (6) mounted on the frame (4); a light-transmitting plate (7) is embedded in the face mask (6); connecting ear blocks (22) are arranged on the surrounding walls of the face mask (6) and the back plate (3); and two corresponding connecting ear blocks (22) are connected by bolts.

7. The light-guiding surface light source according to claim 6, characterized in that: The surface light source assembly (5) comprises an LED lamp (18) mounted on the four inner walls of a frame (4), and a reflector (20), a light guide plate (19) and a light diffusion plate (21) sequentially embedded in the frame (4), wherein the LED lamp (18) is aligned with the side of the light guide plate (19).

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