Indicator lamp structure, indicator lamp device using same and indicator lamp for vehicle

Abstract

The utility model discloses an indicating lamp structure which comprises an indicating lamp shell, an LED light source and a light guide structure are arranged in the indicating lamp shell, the light guide structure is made of transparent materials and comprises a light gathering structure and a light guide body, the light guide body is bent at least once from the front end to the rear end, and a light emitting face is arranged at the front end of the light guide body. The light condensation structure is arranged at the rear end of the light guide body and corresponds to the LED light source; from the condensation structure at the rear end, the light guide body sequentially comprises a light up-and-down channel and a light total reflection channel, a free-form surface is arranged at the transition position of the light up-and-down channel and the light total reflection channel, and the light emitting surface is located at the front end of the light total reflection channel; the cross section of the light total reflection channel from the rear end to the front end is in a funnel shape which is gradually enlarged. Light is effectively utilized, and the system efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of indicator light technology, and specifically discloses an indicator light structure, an indicator light device using the indicator light structure, and an indicator light for vehicles. Background Technology

[0002] Chinese patent announcement number CN211468620U, published on September 11, 2020, discloses a status indicator light, an AGV vehicle, and a mobile robot, comprising: a lamp holder with a mounting portion; a focusing element disposed on the mounting portion; a light-emitting element disposed on the mounting portion and opposite to the focusing element; and a lampshade disposed on the lamp holder and covering the light-emitting element. During operation, the light emitted by the light-emitting element is focused by the focusing element, causing diffused light to be reflected and converged towards the lampshade, thus ensuring stronger and more uniform light intensity projected from the lampshade, improving the sensory experience of using the equipment. A drawback of this prior art is that the lamp holder, focusing element, light-emitting element, and lampshade adopt a linear structure, reducing the space utilization of the equipment's internal cavity; while in the prior art, to more effectively utilize the internal space of the equipment, the light-emitting direction of the light-emitting element is set at a 90-degree angle to the light-emitting port of the indicator light. For example, Chinese patent announcement number 210831796U, with an announcement date of June 23, 2020, discloses a vehicle lamp concentrator and a vehicle lamp module. The concentrator has at least one bend from the rear end to the front end, with a total reflection surface at each bend. Only the last bend is in the direction from rear to front. The front end has a light-emitting surface. The rear end has several focusing structures, each corresponding to a light source. Starting from the focusing structures at the rear end, the concentrator body sequentially consists of upper and lower light channels, and front and rear light channels. The light-emitting surface is located at the front end of the front and rear light channels; there are at least three focusing structures arranged in multiple closely spaced rows, with at least one focusing structure having at least two adjacent focusing structures, and at least one of the adjacent focusing structures located in a direction other than the horizontal and vertical directions of the focusing structure; the acute angle between the total reflection surface and the direction of the front and rear extension of the light channels is 45°; the angle between the upper and lower light channels and the front and rear light channels is 90°; the upper or lower boundary line of the light-emitting surface is set as a cutoff line shape. Although the existing technology has adjusted the structure of the focusing device to make the module smaller and thus improve space utilization, in practical applications, the small turning radius easily leads to light leakage and low light utilization efficiency. In view of this situation, there is an urgent need for improvement. Utility Model Content

[0003] Based on this, it is necessary to provide an indicator light structure that addresses the problems of existing technologies, effectively utilizes light, improves system efficiency, and ensures uniform light output while achieving light deflection in a smaller space.

[0004] To address the problems of existing technologies, this utility model discloses an indicator light structure, including an indicator light housing. An LED light source and a light guide structure are disposed within the indicator light housing. The light guide structure is made of a transparent material and includes a focusing structure and a light guide body. The light guide body has at least one bend from its front end to its rear end, and its front end has a light-emitting surface. The focusing structure is disposed at the rear end of the light guide body and corresponds to the LED light source.

[0005] Starting from the light-concentrating structure at the rear end, the light guide consists of a light-up and down channel and a light-total internal reflection channel. The transition between the light-up and down channel and the light-total internal reflection channel has a free-form surface. The light-emitting surface is located at the front end of the light-total internal reflection channel. The cross-section of the light-total internal reflection channel gradually increases in size from the rear end to the front end, forming a funnel shape. The shape of the front end of the light-total internal reflection channel is adapted to the inner cavity of the indicator light housing. The area of ​​the light-emitting surface is larger than the area of ​​the inner cavity of the indicator light housing. The cross-section of the light-up and down channel is a downwardly inclined plug shape.

[0006] Preferably, the surface of the light-emitting surface is formed with an optical pattern.

[0007] Preferably, the light guide is made of polycarbonate material and has a light transmittance of 89%; the outer surface of the light guide is formed with a polished surface layer.

[0008] Preferably, the LED light source is a Lambertian light source.

[0009] Preferably, a corresponding diffusion lens is provided behind the light-emitting surface.

[0010] Preferably, the thickness of the diffusion lens is set to A, where A > 3 mm.

[0011] Preferably, the diffusion lens is made of polycarbonate material and has a light transmittance of 51.6%.

[0012] An indicator light device includes an indicator light body configured as described above, i.e., an indicator light structure comprising an indicator light housing, an LED light source and a light guide structure disposed within the housing, the light guide structure being made of a transparent material, the light guide structure including a focusing structure and a light guide body, the light guide body having at least one bend from front to rear, the front end of the light guide body having a light-emitting surface; the focusing structure being disposed at the rear end of the light guide body, the focusing structure corresponding to the LED light source; starting from the rear focusing structure, the light guide body sequentially comprises a vertical light channel and a total internal reflection channel, the transition between the vertical light channel and the total internal reflection channel having a free-form surface, the light-emitting surface being located at the front end of the total internal reflection channel; the cross-section of the total internal reflection channel from rear to front is a funnel shape that gradually increases in size; the shape of the front end of the total internal reflection channel is adapted to the inner cavity of the indicator light housing; the area of ​​the light-emitting surface is larger than the area of ​​the inner cavity of the indicator light housing; the cross-section of the vertical light channel is a downwardly inclined plug shape. As a preferred embodiment, the surface of the light-emitting surface is formed with an optical pattern; the light guide is made of polycarbonate material and has a light transmittance of 89%; the outer surface of the light guide is formed with a polished surface layer; the LED light source is a Lambertian light source; a corresponding diffusion lens is provided behind the light-emitting surface; the thickness of the diffusion lens is set to A, where A > 3 mm; the diffusion lens is made of polycarbonate material and has a light transmittance of 51.6%.

[0013] An indicator light for a vehicle includes an indicator light body configured with the above-mentioned indicator light structure, namely, an indicator light structure comprising an indicator light housing, an LED light source and a light guide structure disposed within the indicator light housing, the light guide structure being made of a transparent material, the light guide structure including a focusing structure and a light guide body, the light guide body having at least one bend from the front end to the rear end, the front end of the light guide body having a light-emitting surface; the focusing structure being disposed at the rear end of the light guide body, the focusing structure corresponding to the LED light source; starting from the rear end of the focusing structure, the light guide body sequentially comprises a light upper and lower channel and a light total internal reflection channel, the transition between the light upper and lower channel and the light total internal reflection channel having a free-form surface, the light-emitting surface being located at the front end of the light total internal reflection channel; the cross-section of the light total internal reflection channel from the rear end to the front end is a funnel shape that gradually increases in size; the shape of the front end of the light total internal reflection channel is adapted to the inner cavity of the indicator light housing; the area of ​​the light-emitting surface is larger than the area of ​​the inner cavity of the indicator light housing; the cross-section of the light upper and lower channel is a downwardly inclined plug shape. As a preferred embodiment, the surface of the light-emitting surface is formed with an optical pattern; the light guide is made of polycarbonate material and has a light transmittance of 89%; the outer surface of the light guide is formed with a polished surface layer; the LED light source is a Lambertian light source; a corresponding diffusion lens is provided behind the light-emitting surface; the thickness of the diffusion lens is set to A, where A > 3 mm; the diffusion lens is made of polycarbonate material and has a light transmittance of 51.6%.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Using a light guide structure, the transition between the upper and lower light channels and the total internal reflection light channel has a free-form surface, which effectively controls the light within the light guide body, causing the light from the LED light source to undergo total internal reflection inside the light guide body, changing the angle of the light, and leading the light out to the light outlet. The light-gathering structure is used to collect and change the light from the LED light source to improve the utilization rate of the LED light source.

[0016] 2. The surface of the light-emitting surface is formed with optical patterns to change the propagation angle of light in the horizontal and vertical directions. In addition, a corresponding diffusion lens is set after the light-emitting surface to homogenize the light-emitting surface. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention.

[0018] Figure 2 This is a partial cross-sectional view of the present invention.

[0019] Figure 3 This is a three-dimensional view of the light guide structure (rear-end view).

[0020] Figure 4A three-dimensional view of the light guide structure (front-end view).

[0021] The attached diagram is labeled as follows: indicator light housing 10, LED light source 11, light guide 12, diffuser lens 13, light emitting surface 14, freeform surface 16, total internal reflection channel 15, upper and lower light channels 19, and focusing structure 18. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] refer to Figures 1 to 4 .

[0024] This utility model discloses an indicator light structure, including an indicator light housing 10. An LED light source 11 and a light guide structure are disposed inside the indicator light housing 10. The light guide structure is made of transparent material and includes a light-focusing structure 18 and a light guide body 12. The light guide body 12 has at least one bend from the front end to the rear end, and the front end of the light guide body 12 has a light-emitting surface 14. The light-focusing structure 18 is disposed at the rear end of the light guide body 12 and corresponds to the LED light source 11.

[0025] Starting from the rear focusing structure 18, the light guide 12 consists of the upper and lower light channels 19 and the total internal reflection light channel 15. The transition between the upper and lower light channels 19 and the total internal reflection light channel 15 has a free-form surface 16. The space of the lamp is small. If the light path is deflected by 90 degrees, the turning radius is small, which can easily cause light leakage. Combined with the free-form surface 16, the light can be effectively controlled within the light guide 12.

[0026] The light-emitting surface 14 is located at the front end of the total internal reflection channel 15; the cross-section of the total internal reflection channel 15 is a funnel shape that gradually increases from the rear end to the front end; the shape of the front end of the total internal reflection channel 15 is adapted to the inner cavity of the indicator light housing 10; the area of ​​the light-emitting surface 14 is larger than the inner cavity area of ​​the indicator light housing 10; the cross-section of the upper and lower light channels 19 is a downwardly inclined flute shape.

[0027] In this embodiment, an optical pattern is formed on the surface of the light-emitting surface 14. Since the light-emitting port is relatively large, the light transmitted to the port is not evenly distributed. By forming an optical pattern on the surface of the light-emitting surface 14, the propagation angle of the light in the horizontal and vertical directions can be changed.

[0028] The light guide 12 is made of polycarbonate material and has a light transmittance of 89%; the outer surface of the light guide 12 is formed with a polished surface layer.

[0029] The LED light source 11 is a Lambertian light source with a light emission angle of 120 degrees or more. The light emitted from the LED light source 11 is collected by the light-concentrating structure 18, allowing more of it to be transmitted into the light guide 12. A corresponding diffuser lens 13 is provided behind the light-emitting surface 14. The thickness of the diffuser lens 13 is set to A, where A > 3 mm. The diffuser lens 13 is made of polycarbonate material and has a light transmittance of 51.6%.

[0030] In this embodiment, a light guide structure is used, and the transition between the upper and lower light channels and the total internal reflection light channel has a free-form surface. This allows the light from the LED light source to be effectively controlled within the light guide body and undergo total internal reflection inside the light guide body, changing the angle of the light and then guiding the light out to the light outlet. By using a focusing structure to collect and modify the light from the LED light source, the system achieves light deflection in a small space, thereby improving the utilization rate of the LED light source and thus improving system efficiency. The surface of the light-emitting surface is formed with optical patterns, and a corresponding diffusion lens is set after the light-emitting surface to ensure the homogenization of the light-emitting surface.

[0031] An indicator light device includes an indicator light body, which is configured as an indicator light structure in this embodiment, such as an indicator light for a robotic vacuum cleaner.

[0032] An indicator light for a vehicle includes an indicator light body, which is configured as the indicator light structure in this embodiment.

[0033] The embodiments described above merely illustrate various implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An indicator light structure, comprising an indicator light housing (10), wherein an LED light source (11) and a light guide structure are disposed within the indicator light housing (10), the light guide structure being made of a transparent material, the light guide structure comprising a light-focusing structure (18) and a light guide body (12), characterized in that, The light guide (12) has at least one bend from the front end to the rear end, and the front end of the light guide (12) has a light-emitting surface (14); the light-concentrating structure (18) is disposed at the rear end of the light guide (12), and the light-concentrating structure (18) corresponds to the LED light source (11); Starting from the light-concentrating structure (18) at the rear end, the light guide (12) consists of a light up and down channel (19) and a light total reflection channel (15) in sequence. The transition between the light up and down channel (19) and the light total reflection channel (15) has a free-form surface (16). The light-emitting surface (14) is located at the front end of the light total reflection channel (15). The cross-section of the light total reflection channel (15) gradually increases from the rear end to the front end, forming a funnel shape. The shape of the front end of the light total reflection channel (15) is adapted to the inner cavity of the indicator light housing (10). The area of ​​the light-emitting surface (14) is larger than the inner cavity area of ​​the indicator light housing (10). The cross-section of the light up and down channel (19) is a downwardly inclined flute shape.

2. The indicator light structure according to claim 1, characterized in that, The surface of the light-emitting surface (14) is formed with optical patterns.

3. The indicator light structure according to claim 1, characterized in that, The light guide (12) is made of polycarbonate material and has a light transmittance of 89%. The outer surface of the light guide (12) is formed with a polished surface layer.

4. The indicator light structure according to claim 1, characterized in that, The LED light source (11) is configured as a Lambert light source.

5. The indicator light structure according to claim 1, characterized in that, A corresponding diffusion lens (13) is provided behind the light-emitting surface (14).

6. The indicator light structure according to claim 5, characterized in that, The thickness of the diffusion lens (13) is set to A, where A > 3 mm.

7. The indicator light structure according to claim 6, characterized in that, The diffusion lens (13) is made of polycarbonate material and has a light transmittance of 51.6%.

8. An indicator light device, comprising an indicator light body, characterized in that, The indicator light body is configured as an indicator light structure according to any one of claims 1 to 7.

9. An indicator light for a vehicle, comprising an indicator light body, characterized in that, The indicator light body is configured as an indicator light structure according to any one of claims 1 to 7.

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