Novel uniform light guide structure
By setting up a closed dark room in the light guide structure and using the light guide part to guide light, the light leakage and light leakage problems of the traditional aperture guide structure when the design space is limited, and a uniform illumination effect in a small space is achieved.
Patent Information
- Application Number
- CN202422144681.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-02
AI Technical Summary
When achieving backlight uniformity, traditional aperture guide structures require a large design space. However, in recent years, the compression of the internal design space of switches by OEMs has brought huge challenges to the design of aperture guide structure.
By setting up a relatively closed dark room, the LED light source is set in the dark room, and the light source is guided to the light guide aperture through the light guide part to achieve uniform light illumination and avoid light leakage and light leakage problems.
It realizes that LED light is uniformly illuminated to the annular light-out surface in a small space, avoiding light leakage and light leakage problems, and improving the efficiency and stability of the light guide structure.
Smart Images
Figure CN223036257U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of light guiding, and particularly relates to a novel uniform light guiding structure. Background Art
[0002] At present, many switches are equipped with a ring-shaped backlight illumination function, which plays a role in prompting and adjusting the atmosphere. The light is mainly evenly irradiated onto the light-emitting surface through a light guide ring structure. In order to meet the requirements of backlight uniformity and solve the influence of light leakage and crosstalk on uniformity, traditional light guide ring structures require a large design space. In recent years, the internal design space of switches by the main engine manufacturers has been gradually compressed, posing a huge challenge to the design of light guide ring structures. Summary of the Invention
[0003] In view of the above problems, this application proposes a novel uniform light guiding structure. By setting a relatively enclosed dark room, the LED light source is arranged in the dark room, and then the light source is guided to the light guide ring through the light guiding part, so as to evenly irradiate the light emitted by the LED onto the ring-shaped light-emitting surface through a smaller space, achieving the beneficial effect of no light leakage and crosstalk problems. The novel uniform light guiding structure is specifically realized through the following technical solutions:
[0004] A novel uniform light guiding structure includes: a housing, a substrate, an LED light source, and a light guide ring. The substrate is arranged inside the housing, the LED light source is arranged on the substrate, the light guide ring is arranged on the housing, and the inner end of the light guide ring is arranged above the LED light source. The housing includes an upper cover, a main body, and a base. The upper cover is covered above the main body, the main body is sleeved on the base, and an opaque dark room is formed between the main body and the base. The substrate and the LED light source arranged on the substrate are arranged in the dark room. With this setting, the light of the LED light source will not leak out to the outside.
[0005] Furthermore, the light guide ring includes a light guiding part and a light-emitting ring. The light guiding part penetrates downward through the main body and extends into the dark room, and is arranged above the LED light source. The main body is provided with a positioning hole corresponding to the position where the light guiding part penetrates. The light guide ring is clamped above the main body through the cooperation of the light guiding part and the positioning hole. Through this setting, the light source in the dark room can be led out to realize the light-emitting function of the light guide ring.
[0006] Further setting: A positioning boss is provided above the main body corresponding to the light guide ring. The light guide ring is sleeved on the outer edge of the positioning boss. The upper cover is provided with a positioning opening corresponding to the positioning boss. When the upper cover is covered on the upper part of the main body, the positioning opening is sleeved on the outer edge of the positioning boss, and the light-emitting ring of the light guide ring is clamped between the positioning boss and the positioning opening. Through this setting, the connection between the light guide ring and the main body and the upper cover is firm, with fewer gaps, reducing light leakage and making the overall structure firm.
[0007] Further setting: The light guide ring further includes a single-color transparent structure, a two-color haze structure, and a color display light-emitting surface. The single-color transparent structure, the two-color haze structure, and the color display light-emitting surface are all made of an integral light guide material. Through this setting, the final light is softly diffused without being dazzling.
[0008] Further setting: The substrate is fixedly arranged in the main body by screws. Through this setting, the fixation of the substrate is more firm and it is convenient to disassemble.
[0009] Further setting: A first limiting convex block is circumferentially arranged on the inner wall of the base. Through this setting, the position of the substrate is further limited to prevent the substrate from falling off and making the overall structure more stable.
[0010] Further setting: A second limiting convex block is arranged on the outer wall of the base. A downward-opening limiting sliding groove is arranged on the main body corresponding to the position of the second limiting convex block. When the main body is sleeved on the outer circumference of the base, the second limiting convex block is clamped in the limiting sliding groove. Through this setting, the connection between the base and the main body is more firm, reducing gap vibration and making the overall structure more stable.
[0011] Further setting: The second limiting convex block includes a large block and multiple small blocks, and the limiting sliding groove corresponding to the second limiting convex block is also set as a large sliding groove and a small sliding groove. Through this setting, the connection direction between the main body and the base is fixed, differentiating front and back, making the connection between the main body and the base more precise and firm.
[0012] In summary, for the novel uniform light guide structure, by setting a relatively enclosed darkroom, arranging the LED light source in the darkroom, and then guiding the light source to the indicating aperture only through the light guide material, it is realized that the light emitted by the LED is evenly irradiated onto the annular light-emitting surface through a smaller space, achieving the beneficial effect of no light leakage and light crosstalk problems. Description of the Drawings
[0013] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.
[0014] Figure 1 Isometric view of the novel uniform light guide structure provided by the embodiment of the present application;
[0015] Figure 2 Exploded view of the novel uniform light guide structure provided by the embodiment of the present application;
[0016] Figure 3 Cross-sectional view of the novel uniform light guide structure provided by the embodiment of the present application;
[0017] Figure 4 Schematic structural diagram of the base in the novel uniform light guide structure provided by the embodiment of the present application.
[0018] Among them, the reference numerals in the figure:
[0019] 1, housing; 2, substrate; 3, LED light source; 4, light guide ring; 5, upper cover; 6, main body; 7, base; 8, dark room; 9, light guide part; 10, light emitting ring; 11, positioning hole; 12, positioning boss; 13, positioning opening; 14, monochromatic transparent structure; 15, dichromatic haze structure; 16, color rendering light emitting surface; 17, screw; 18, first limiting convex block; 19, second limiting convex block; 20, limiting chute; 21, large block; 22, small block; 23, large chute; 24, small chute. Detailed implementation manners
[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following further details the present application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0021] The appearance of the above words in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0022] Now, the present application is further described in conjunction with the accompanying drawings and specific implementation manners:
[0023] Please refer to together Figures 1 to 4, a novel uniform light guide structure, comprising: a housing, a substrate, an LED light source and a light guide ring. The substrate is disposed inside the housing, the LED light source is disposed on the substrate, the light guide ring is disposed on the housing and the inner end of the light guide ring is disposed above the LED light source. The housing includes an upper cover, a main body and a base. The upper cover is disposed above the main body, the main body is sleeved on the base, and an opaque dark chamber is formed between the main body and the base. The substrate and the LED light source disposed on the substrate are disposed in the dark chamber.
[0024] Please refer to Figures 1 to 4 , in this embodiment, the light guide ring includes a light guide portion and a light emitting ring. The light guide portion penetrates downward through the main body and extends into the dark chamber, and is disposed above the LED light source. The main body is provided with a positioning hole corresponding to the position where the light guide portion penetrates. The light guide ring is clamped above the main body through the cooperation of the light guide portion and the positioning hole. With such a setting, the light guide ring guides the light in the dark chamber to the light emitting ring through the light guide portion, realizing the function of the light guide ring finally emitting light. And the setting of the dark chamber enables the light of the LED light source to be better kept in the dark chamber and will not leak and diverge. Therefore, the function of preventing light leakage is better realized. A positioning boss is disposed above the main body corresponding to the light guide ring. The light guide ring is sleeved on the outer edge of the positioning boss. The upper cover is provided with a positioning opening corresponding to the positioning boss. When the upper cover is disposed above the main body, the positioning opening is sleeved on the outer edge of the positioning boss, and the light emitting ring of the light guide ring is clamped between the positioning boss and the positioning opening. The light emitting ring portion of the light guide ring is clamped between the main body and the upper cover, further limiting the light guide ring, making the overall structural stability stronger. The light guide ring further includes a single-color transparent structure, a two-color haze structure and a color rendering light-emitting surface. The single-color transparent structure, the two-color haze structure and the color rendering light-emitting surface are all integrally formed light guide materials. The substrate is fixedly disposed in the main body by screws. A first limiting protrusion is disposed circumferentially on the inner wall of the base. A second limiting protrusion is disposed on the outer wall of the base. The main body is provided with a downward-opening limiting chute corresponding to the position of the second limiting protrusion. When the main body is sleeved on the outer periphery of the base, the second limiting protrusion is clamped in the limiting chute. The second limiting protrusion includes a large block and a plurality of small blocks, and the limiting chute corresponding to the second limiting protrusion is also set as a large chute and a small chute.
[0025] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A new uniform light guide structure, comprising: A shell, a substrate, an LED light source and a light guide ring, wherein the substrate is arranged inside the shell, the LED light source is arranged on the substrate, the light guide ring is arranged on the shell and the inner end of the light guide ring is arranged above the LED light source, the shell comprises an upper cover, a main body and a base, the upper cover is arranged above the main body, and the main body is sleeved on the base, characterized in that a light-tight darkroom is formed between the main body and the base, and the substrate and the LED light source arranged on the substrate are arranged in the darkroom.
2. A novel uniform light guide structure according to claim 1, characterized in that :The light guide ring includes a light guiding part and a light emitting ring. The light guiding part penetrates downwardly through the main body and extends into the dark room, and is arranged above the LED light source. The main body is provided with a positioning hole at a position corresponding to the penetration of the light guiding part. The light guide ring is clamped on the top of the main body through the cooperation between the light guiding part and the positioning hole.
3. A novel uniform light guide structure according to claim 2, characterized in that A positioning boss is provided above the main body corresponding to the light guide ring, the light guide ring is sleeved on the outer edge of the positioning boss, and a positioning opening is provided on the upper cover corresponding to the positioning boss. When the upper cover is arranged on the main body, the positioning opening is sleeved on the outer edge of the positioning boss, and the luminous ring of the light guide ring is clamped between the positioning boss and the positioning opening.
4. A novel uniform light guide structure according to claim 1, characterized in that The light guide ring also includes a single-color transparent structure, a two-color haze structure and a color-displaying light-emitting surface, and the single-color transparent structure, the two-color haze structure and the color-displaying light-emitting surface are all integrated light-guiding materials.
5. A novel uniform light guide structure according to claim 1, characterized in that The substrate is fixed in the main body by screws.
6. A novel uniform light guide structure according to claim 1, characterized in that : A first limiting protrusion is circumferentially arranged on the inner wall of the base.
7. A novel uniform light guide structure according to claim 1, characterized in that : A second limiting protrusion is arranged on the outer wall of the base, and a downwardly opening limiting slide groove is arranged on the main body corresponding to the position of the second limiting protrusion. When the main body is sleeved on the outer periphery of the base, the second limiting protrusion is clamped in the limiting slide groove.
8. A novel uniform light guide structure according to claim 7, characterized in that :The second limiting protrusion includes a large block and multiple small blocks, and the limiting sliding groove corresponding to the second limiting protrusion is also set as a large sliding groove and a small sliding groove.