LED light guide assembly

Abstract

The utility model relates to a light-emitting diode (LED) light guide assembly, which comprises a light guide column and a panel, the light guide column is of a columnar structure made of plastics, the light inlet end of the light guide column is close to an LED lamp bead, the light outlet end of the light guide column is arranged in a light outlet hole of the panel, and the outer wall of the light guide column is smooth. According to the utility model, the product structure is not limited to the mode that a hole is formed in an upper cover of a shell of a component and a film is pasted, the light emitted by the LED lamp bead is directly reflected by using the light guide column, and the design of various light guide columns can improve the beauty of the component product, so that the light transmission of the LED lamp is more uniform, and the light can be better transmitted from a light outlet hole in a panel; the light-emitting plate and the light-emitting hole are fixed together, so that the attractive effect is improved; and besides, the LED lamp which is not directly emitted by one line can be refracted through turning to achieve a uniform light transmission effect, and is not limited to the height difference between the LED lamp bead and the light emitting hole, so that the requirements of different light guide positions can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of component design, in particular to an LED light guide component. Background Art

[0002] With the development of society and the progress of the industrial field, the industry has higher and higher requirements for products. Not only the demand for product functions has increased, but the appearance of products has also become the standard for customers to choose products. When there are multiple products on the market that can meet functional requirements, more beautiful products will have an advantage, and lighting effects can also improve the grade of products.

[0003] For the light transmission effect of the product, previous products all had a large hole in the shell of the component to let the diode out, and then covered the surface with a film, and made the position corresponding to the lamp transparent to let the light out. Most products on the market are also designed in this way. Leaving a large hole in the shell is not beautiful and easy to get dust in, and light can only be transmitted when the lamp and the hole are in a line.

[0004] In addition, in the actual product design process, various external factors such as appearance and internal component layout, structural limitations, ease of production welding and installation, and cost will be taken into consideration, resulting in a height difference between the light-emitting diode (lamp bead) and the panel. Not every product can ensure that the height of the lamp is the same as the panel, which results in the light not being able to shine through well. Utility Model Content

[0005] The purpose of the utility model is to provide an LED light guide assembly to solve the problems encountered in the above-mentioned background technology.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An LED light guide assembly includes a light guide column and a panel. The light guide column is a columnar structure made of plastic. The light input end of the light guide column is close to the LED lamp bead, the light output end of the light guide column is located in the light output hole of the panel, and the outer wall of the light guide column is smoothly arranged.

[0008] The light-incoming end of the light-guiding column is a planar structure, and its distance from the LED lamp bead is between 0.3-0.8 mm.

[0009] The light-inlet end of the light-guiding column is provided with a concave surface, and the concave surface is inwardly concave and has a smooth surface. The concave surface is a semicircular structure, and the LED lamp bead rests in the concave surface. The concave surface is a columnar structure that matches the LED lamp bead, and the LED lamp bead rests in the concave surface.

[0010] The light-emitting end of the light-guiding column is provided with a light-guiding end surface, and the light-guiding end surface is flush with the light-emitting hole of the panel or protrudes outward from the light-emitting hole of the panel.

[0011] A card slot is provided at the bottom of the outer periphery of the light guide end face, and the light guide column is connected to the panel through the card slot. The light inlet end of the light guide column is a circular structure, and the light outlet end of the light guide column is a rectangular structure. A rough surface is provided on the light guide end face. An annular groove is provided on the outer wall of the light guide column, and a conical surface is provided at the lower part of the groove, and a boss matching the groove is provided in the light outlet hole of the panel.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is no longer limited to the method of opening holes and applying film on the outer shell of the component for product structure, and directly uses the light guide column to reflect the light emitted by the LED lamp beads. The design of various styles of light guide columns can improve the appearance of component products, make the LED lamps more evenly transmit light, and better transmit light from the light outlet holes in the panel, and be fixed together with the light outlet holes to improve the aesthetic effect; in addition, LED lights that are not directly emitted in a straight line can also be refracted through turns to achieve a uniform light transmission effect, which is not limited to the height difference between the LED lamp beads and the light outlet holes, thereby meeting the needs of different light guide positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model in Example 1;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model in Example 2;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model in Example 3;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model in Example 4.

[0018] Numbers in the figure: 1-LED board; 2-LED lamp bead; 3-light guide column; 31-light guide end face; 32-slot; 33-rough surface; 34-concave surface; 35-groove; 36-conical surface; 4-panel; 41-boss. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0020] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0021] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1, as Figure 1 As shown, an LED light guide assembly includes a light guide column 3 and a panel 4. The light guide column 3 can be used to transmit the light of the LED on the PCB board 1 to the product panel to display the relevant status, and can also gather and guide the light to be used as the backlight of the LCD display screen, and can also be used to illuminate the pattern on the transparent window. The panel 4 is the upper cover panel of the component housing, and the LED lamp bead 2 can be a common plug-in LED lamp bead or a conventional SMD LED lamp bead.

[0023] During implementation, the light guide column 3 is a columnar structure made of plastic. In order to ensure the light transmission effect, the utility model should pay attention to the light guide material and structure. First of all, in terms of material, to ensure the light transmission effect, the cost must be considered. The plastic mold opening process is selected. Among the plastic materials, PMMA and PC have the best light guiding effect, and the efficiency can reach more than 92%. Among them, PMMA is preferred because of its low cost. In terms of structure, as long as the light input end of the light guide column 3 is close to the LED lamp bead 2, and the light output end of the light guide column 3 is located in the light output hole of the panel 4, it can be achieved that the overall columnar structure can be adjusted according to the installation position of the LED lamp bead 2 and the light output hole. The tilt angle of the bend can be adjusted.

[0024] In order to reduce light loss, in addition to the high-gloss surface and concave design of the light incident surface, the side walls parallel to the direction of light propagation should also be very smooth, like a mirror, so that the light can produce complete internal reflection on its surface. In order to increase the reflection efficiency, the surface can be treated with reflection enhancement, such as spraying white oil, etc., so the outer wall of the light guide column 3 is set to be smooth.

[0025] As a preferred solution, the light inlet end of the light guide column 3 is a planar structure, and its distance from the LED lamp bead 2 is between 0.3-0.8 mm, and the preferred distance is 0.5 mm. The LED lamp bead 2 is soldered on the PCB board 1, and the light guide column 3 is fixed about 0.5 mm above the LED lamp bead 2 to transmit the light out. The entrance of the light guide column 3 should be smooth and flat or concave and match the shape of the LED to ensure efficient coupling and capture of light.

[0026] Example 2, please refer to Figure 2 , the arrow is the direction of light reflection. Different from the first embodiment, a concave surface 34 is provided at the light-inlet end of the light guide column 3, and the concave surface 34 is inwardly concave and smooth. The concave design can be applied to any combination of light guide 3 and LED lamp bead 2 to improve the coupling rate of light flux and light capture ability, and to make the light-inlet surface high-light. As a preferred solution, the concave surface 34 is a semicircular structure, and the LED lamp bead 2 abuts against the concave surface 34, which is convenient for reflecting light and improving the coupling rate of light flux.

[0027] Example 3, please refer to Figure 3 Similar to the first embodiment, the light-emitting end of the light-guiding column 3 is provided with a light-guiding end surface 31, and the light-guiding end surface 31 is flush with the light-emitting hole of the panel 4 or protrudes from the light-emitting hole of the panel 4. Whether the light-guiding end surface 31 is flush with the light-emitting hole of the panel 4 or protrudes from the light-emitting hole of the panel 4, a good light-guiding effect can be produced.

[0028] The light guide column 3 is a transparent part, and the light guide column 3 and the panel 4 are often fixed by interference fit, hot melt fixation, snap-on fixation, etc. Figure 1 As shown, a clamping groove 32 is provided at the outer bottom of the light guide end surface 31 , and the light guide column 3 is clamped with the panel 4 through the clamping groove 32 .

[0029] exist Figure 3 In the embodiment, an annular groove 35 is provided on the outer wall of the light guide column 3, a conical surface 36 is provided at the lower part of the groove 35, and a boss 41 matching with the groove 35 is provided in the light exit hole of the panel 4, so the two can be snap-fitted together by the cooperation of the groove 35 and the boss 41. When implemented, the light inlet end of the light guide column 3 is first inserted into the opening of the panel 4, and the groove 35 and the boss 41 are snap-fitted together through the guiding effect of the conical surface 36, and then the light guide column 3 is stably fixed in the panel 4.

[0030] Example 4, please refer to Figure 4 In this embodiment, the light-inlet end of the light-guiding column 3 is designed as a circular structure, and the light-outlet end of the light-guiding column 3 is a rectangular structure, and its outer wall has a smooth transition. In order to increase the reflection efficiency, the surface can be treated to enhance the reflection. Figure 4 As shown, the arrow indicates the direction of light scattering. In this embodiment, the concave surface 34 is a columnar structure matching the LED lamp bead 2. The LED lamp bead 2 rests against the concave surface 34 to improve the coupling rate of the light flux and the light capturing capability.

[0031] In order to obtain a better light transmission effect, a rough surface 33 is provided on the light guide end surface 31. In implementation, the rough surface 33 is designed to be a rough surface such as a frosted surface, an etched surface or a matte surface to increase the diffuse scattering effect. Diffusion powder can also be added to the material to ensure that the light can escape from the inside of the light guide column and scatter the light at a very wide angle, so that the exit end of the light guide column is bright no matter from which angle it is viewed.

[0032] The product structure of the utility model is no longer limited to the method of opening a hole and applying a film on the outer shell of the component. The light guide column 3 is directly used to reflect the light emitted by the LED lamp bead 2. The design of various styles of light guide columns 3 can improve the appearance of the component product, make the LED light transmittance more uniform, and better transmit from the light outlet hole in the panel 4, and be fixed together with the light outlet hole to improve the aesthetic effect; in addition, the LED lights that are not directly emitted in a straight line can also be refracted through turns to achieve a uniform light transmission effect, which is not limited to the height difference between the LED lamp bead 2 and the light outlet hole, thereby meeting the needs of different light guide positions.

[0033] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An LED light guide assembly, characterized in that: The invention comprises a light guide column (3) and a panel (4); the light guide column (3) is a columnar structure made of plastic; the light input end of the light guide column (3) is close to the LED lamp bead (2); the light output end of the light guide column (3) is located in the light output hole of the panel (4); and the outer wall of the light guide column (3) is smoothly arranged.

2. The LED light guide assembly according to claim 1, characterized in that: The light-incoming end of the light-guiding column (3) is a planar structure, and its distance from the LED lamp bead (2) is between 0.3 and 0.8 millimeters.

3. The LED light guide assembly according to claim 1, characterized in that: The light-incoming end of the light-guiding column (3) is provided with a concave surface (34), which is inwardly recessed and has a smooth surface.

4. The LED light guide assembly according to claim 3, characterized in that: The concave surface (34) is a semicircular structure, and the LED lamp bead (2) is against the concave surface (34).

5. The LED light guide assembly according to claim 3, characterized in that: The concave surface (34) is a columnar structure that matches the LED lamp bead (2), and the LED lamp bead (2) abuts against the concave surface (34).

6. The LED light guide assembly according to claim 1, characterized in that: The light-emitting end of the light-guiding column (3) is provided with a light-guiding end surface (31), and the light-guiding end surface (31) is flush with the light-emitting hole of the panel (4) or protrudes outward from the light-emitting hole of the panel (4).

7. The LED light guide assembly according to claim 6, characterized in that: A clamping groove (32) is provided at the outer bottom of the light guide end surface (31), and the light guide column (3) is clamped with the panel (4) via the clamping groove (32).

8. The LED light guide assembly according to claim 6, characterized in that: The light input end of the light guide column (3) is a circular structure, and the light output end of the light guide column (3) is a rectangular structure.

9. The LED light guide assembly according to claim 6, characterized in that: A rough surface (33) is provided on the light-guiding end surface (31).

10. The LED light guide assembly according to claim 6, characterized in that: An annular groove (35) is provided on the outer wall of the light guide column (3), a conical surface (36) is provided at the lower part of the groove (35), and a boss (41) matching the groove (35) is provided in the light outlet hole of the panel (4).

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