Annular light guide structure
The annular light guide structure addresses non-uniform brightness issues by integrating an optical fiber with pits and protrusions, achieving uniform lighting and reduced energy consumption with a single LED source.
Patent Information
- Application Number
- CN202420161210.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-01-23
AI Technical Summary
Existing light guide structures in electronic products suffer from non-uniform brightness due to the use of multiple LED light sources, leading to high energy consumption and cost, with traditional designs resulting in bright spots and dark areas, especially in larger products.
An annular light guide structure incorporating an annular optical fiber with pits and protrusions, integrated with a light guide plate and a single or dual LED light source, utilizing a light diffusing agent to enhance uniformity and brightness.
Achieves uniform lighting with reduced energy consumption and cost by using a single or dual LED light source, enhancing brightness and uniformity through the annular optical fiber's design with pits and protrusions, and a light diffusing agent.
Smart Images
Figure CN222122973U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a light guide structure, in particular to an annular light guide structure. Background Art
[0002] Existing light illumination is based on changing the direction of light propagation a limited number of times. The light is transmitted along the path of the optical fiber, achieving flexible light propagation. However, the flexible propagation of optical fiber illumination does not change the linear propagation of light.
[0003] The existing light guide plate is a commonly used part in electronic products. The light guide plate is usually made of transparent polycarbonate or acrylic material. Its function is to transmit the light emitted by the LED light source to the product appearance surface, indicating the working status of the product and beautifying the appearance. Since the size of the LED light source is relatively small, the range of the light it emits is limited. Generally, a combination of several LED light sources is arranged to provide a light source for a light guide plate, thereby forming a ring or strip light belt. This causes a problem. Due to the use of intermittent point light sources, the brightness of different areas on the light belt varies, which greatly reduces the appearance of the product.
[0004] At present, the luminous aperture or halo of smart home and home appliances generally adopts traditional design thinking, and the luminous surface is formed by directly shining LED lights on the light guide. In this way, the luminous effect must have bright spots and dark areas, and the brightness of the light guide surface cannot be uniform. In addition, to ensure a certain uniformity, the number of LED lights must also be a certain number, which leads to high costs. The larger the product appearance, the more LED lights are needed. Utility Model Content
[0005] The purpose of the utility model is to overcome the defects of the prior art and provide an annular light guide structure, which can save the number of LED light source boxes used to achieve the effect of annular aperture lighting, thereby reducing energy consumption and costs, while providing better lighting brightness and uniformity.
[0006] The purpose of the utility model is achieved as follows: an annular light guide structure, including an annular optical fiber, a light guide plate and an LED light source box, the back of the light guide plate is provided with a groove, and the annular optical fiber is arranged in the groove; the light incident end of the annular optical fiber is connected to the LED light source box, and the outer bottom surface of the annular optical fiber is provided with a plurality of pits.
[0007] The utility model adopts the above technical solution, and compared with the prior art, the beneficial effects are as follows: some tiny pits are pressed out by using a jig or laser at the place where the light needs to be guided out of the outside of the optical fiber, so that only one or two LED lamps need to be placed in the light entrance section of the optical fiber to achieve the aperture effect; it can greatly save the power consumption and cost of the mainboard, and improve the brightness and uniformity of the optical fiber.
[0008] In order to achieve higher brightness, the light emitting surface of the annular optical fiber is closely attached to the groove on the back side of the light guide plate.
[0009] In order to reflect the light to the light-emitting surface when the light propagates in the optical fiber, a plurality of protrusions corresponding to the pits are arranged on the inner bottom surface of the annular optical fiber.
[0010] In order to make the brightness more uniform, a light diffusing agent is added to the material of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The utility model is an overall assembly schematic diagram.
[0012] Figure 2 The structural exploded view of the utility model.
[0013] Figure 3 The left side view of the utility model.
[0014] Figure 4 AA section view of the utility model.
[0015] Figure 5 A partial enlarged view of the utility model.
[0016] Figure 6 A partial enlarged view of point B of the present utility model.
[0017] Figure 7 Schematic diagram of optical fiber transmission of the utility model.
[0018] Among them, 1 is a ring-shaped optical fiber, 2 is a light guide plate, 3 is an LED light source box, 4 is a pit, and 5 is a protrusion. DETAILED DESCRIPTION
[0019] like Figure 1-6 The annular light guide structure shown includes an annular optical fiber 1, a light guide plate 2 and an LED light source box 3. A groove is provided on the back of the light guide plate 2, and the annular optical fiber 1 is provided in the groove; the light incident end of the annular optical fiber 1 is connected to the LED light source box 3, and a plurality of pits 4 are provided on the outer bottom surface of the annular optical fiber 1; the light emitting surface of the annular optical fiber 1 is tightly attached to the groove on the back of the light guide plate 2; a plurality of protrusions 5 corresponding to the pits 4 are provided on the inner bottom surface of the annular optical fiber 1; and a light diffuser is added to the manufacturing material of the light guide plate 2.
[0020] When the utility model is working, Figure 7As shown, the LED light is emitted from the cross section of the optical fiber and propagates inside the optical fiber. Some pits are punched with a laser on the outer optical fiber surface on the other side of the light-emitting surface. In this way, the light propagating inside the optical fiber will encounter these protrusions 5 and reflect the light to the other side of the optical fiber. In this way, an aperture in the shape of an optical fiber can be seen through the light guide plate. The uniformity and brightness of the light can be adjusted by changing the content of the light diffusing agent added to the light guide plate and changing the thickness and density of the pits.
[0021] Taking advantage of the light transmission characteristics of optical fiber, some tiny pits 4 are pressed out of the outside of the optical fiber using a jig or laser where the light needs to be output. In this way, only one or two LED lights need to be placed in the light incident section of the ring-shaped optical fiber to achieve the effect of an aperture, which can greatly save the power consumption and cost of the mainboard, and the brightness and uniformity of the optical fiber are relatively good.
[0022] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.
Claims
1. A ring-shaped light guide structure, characterized in that: It includes a ring-shaped optical fiber, a light guide plate and an LED light source box. The back of the light guide plate is provided with a groove, and the ring-shaped optical fiber is arranged in the groove; the light input end of the ring-shaped optical fiber is connected to the LED light source box, and the outer bottom surface of the ring-shaped optical fiber is provided with a plurality of pits.
2. The annular light guide structure according to claim 1, characterized in that: The light emitting surface of the annular optical fiber is closely attached to the groove on the back side of the light guide plate.
3. The annular light guide structure according to claim 1, characterized in that: The inner bottom surface of the annular optical fiber is provided with a plurality of protrusions corresponding to the pits.
4. The annular light guide structure according to claim 1, characterized in that: A light diffusing agent is added to the material used to make the light guide plate.