TWI726804B - Vehicle lamp structure for eliminating stray light in a specific area - Google Patents

Abstract

The present invention provides a vehicle lamp structure for eliminating stray light in a specific area, which is used to illuminate a target area. The vehicle lamp structure includes: a reflective light cup, which is a cup body having a cup opening; an LED light source is fixedly arranged inside of the cup body; and a three-dimensional mask, fixed on the cup body and surrounding the outer side of the LED light source, has a first shading plate; and a second shading plate, formed between the LED light source and the cup opening, used to block the light of the LED light source directly projected on a tire. Through the implementation of the present invention, the reflection of tires or mudguards can be effectively eliminated and the discomfort of human eyes can be avoided.

Description

Car light structure to eliminate stray light in specific areas

The present invention is a vehicle lamp structure for eliminating stray light in a specific area, especially a vehicle lamp structure for eliminating stray light in a specific area for bicycle lighting.

As shown in Figure 1, the conventional down-lighting bicycle headlight P100, in accordance with the German bicycle lamp testing regulations K-mark, is designed with the LED light source 20 facing downwards and using a multi-reflecting light cup P110 , Individually modulate each reflective surface in the light cup, and then superimpose the light shape corresponding to each of the modulated reflective surfaces to meet the requirements of regulations. The advantage of this method is that the optical efficiency is high and the number of optical components is high. Less, suitable for application in small light-emitting modules.

This design method is called the downward driving bicycle headlight P100. Since the light-emitting surface of the LED light source 20 faces downwards, it can be formed on the wall 10 meters in front of the headlight without any reflection surface modulation. A cut-off line is used to reinforce the cut-off line with a reflective surface far away from the LED light source, while the reflective surface closer to the LED light source reflects light onto the road surface to form a road illumination.

As shown in Figure 2, although this design method has many benefits, it causes users to be troubled in unexpected places. For example, when the under-driving bicycle headlight P100 is used in the position shown in Figure 2, it is very close to the front fender or Tire 510, will make the mudguard or tire 510 reverse The light is intense, causing eye discomfort. Therefore, how to design and manufacture the non-reflective down-lighting bicycle headlight P100 has become an important topic at present.

The present invention is a vehicle lamp structure that eliminates stray light in a specific area, and it is mainly to solve the problem that the downward driving headlight projected on the fender or tire produces strong reflections and causes discomfort to the human eyes.

The present invention provides a vehicle lamp structure for eliminating stray light in a specific area, which is used to illuminate a target area. The vehicle lamp structure includes: a reflective light cup, which is a cup body and has a cup mouth; and an LED light source, which is solid Arranged in the cup body; and a three-dimensional shield fixed on the cup body and surrounding the outer side of the LED light source, which has: a first shading plate formed between the LED light source and the cup body of the reflective light cup; and A second light-shielding plate is formed between the LED light source and the mouth of the cup, and the second light-shielding plate is used to block the light directly projected on a mudguard or a tire from the LED light source in the direction of the target area.

Through the implementation of the present invention, at least the following advanced effects can be achieved:

1. It can effectively eliminate the reflection of mudguards or tires.

2. It can avoid causing discomfort to human eyes.

In order to enable anyone who is familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and the drawings, anyone who is familiar with the relevant art can easily understand the purpose and advantages of the present invention. Therefore, the detailed features and advantages of the present invention will be described in detail in the embodiments.

P10: Down-beat bicycle headlight 0

100: Car light structure to eliminate stray light in a specific area

10: Reflected light cup

110: cup body

111: reflective surface

120: Cup mouth

20: LED light source

30: three-dimensional mask

310: The first shading plate

320: second shading plate

330: light absorbing material

340: Multiple reflective surfaces

510: Mudguard or tire

511: Tire section

[Figure 1] is a schematic diagram of the design of a conventional under-driving bicycle headlight; [Figure 2] is a schematic diagram of a conventional bicycle headlight projection for hubs; [Figure 3] is a vehicle light for eliminating stray light in a specific area of the present invention Three-dimensional embodiment diagram of the structure; [Fig. 4] is an exploded embodiment diagram of a car lamp structure that eliminates stray light in a specific area of the present invention; [Fig. 5A] is a conventional car lamp structure without a three-dimensional mask, its projection angle and [Figure 5B] is a diagram of the experimental results of the light type and the maximum illuminance on the tire section of Figure 5A; [Figure 6A] is a schematic diagram of the relationship between the projection angle and the tire cut-off surface of the vehicle lamp structure of the present invention; And [Fig. 6B] is the experimental result of the light type and the illuminance maximum value of Fig. 6A on the tire cross section.

As shown in FIGS. 3 and 4, this embodiment is a vehicle lamp structure 100 for eliminating stray light in a specific area, which is used to illuminate a target area, and the vehicle lamp structure 100 includes: a reflective light cup 10; an LED Light source 20; and a three-dimensional mask 30.

The reflective light cup 10 is a cup body 110 and has a cup mouth 120; the reflective light cup 10 mainly reflects and collects the light generated by the LED light source 20 by reflecting the reflective surface 111 in the light cup 10, and then The cup mouth 120 projects light to a target area to illuminate the target area.

The LED light source 20 is fixedly arranged in the cup body 110. When the LED light source 20 emits light, the light is projected to the reflective surface 111 in the reflective light cup 10, and finally the light is projected from the cup mouth 120 to a target area for illumination .

The three-dimensional mask 30 is fixed on the cup body 110 and surrounds the outer side of the LED light source 20. The three-dimensional mask 30 has: a first shading plate 310 and a second shading plate 320. In order to avoid the generation of stray light, the inner wall of the three-dimensional mask 30 may further have a light absorbing material 330; and in order to generate more effective reflected light, the reflective light cup 10 may be designed as a reflection of a multi-reflecting surface 340 Light cup 10.

The first shading plate 310 is an arc structure, and the first shading plate 310 is formed between the LED light source 20 and the cup body of the reflective light cup 10, so that the light of the LED light source 20 can be prevented from being projected to non-pointing targets Invalid lighting area of the area.

The second light-shielding plate 320 is formed between the LED light source 20 and the cup opening 120, and the second light-shielding plate 320 is used to block the light from the LED light source 20 directly projecting on a mudguard or tire 510 in the direction of the target area. In this way, the reflection of the mudguard or the tire 510 can be effectively eliminated, and at the same time, the discomfort of the human eyes can be avoided.

In this embodiment, without affecting the illuminance distribution proposed by the K-mark regulations, it is used between the LED light source 20 and the reflective light cup 10, and the second shading plate 320 is designed to cover the target area. The directional fender or tire 510 is illuminated, thereby effectively eliminating the reflection of the fender or tire 510 to avoid causing eye discomfort.

As shown in Figures 5A and 5B, when the under-lighting bicycle headlight P100 is not used, the tire section 511 is fully illuminated by the LED light source 20, and the maximum illuminance on the tire section 511 can be Up to 8760 lux (lx), so the reflection on the tire Light can easily cause discomfort to the eyes of bicycle riders, and when the tires are equipped with metal fenders, the discomfort caused by the light reflected by the fenders will be more serious.

As shown in FIGS. 6A and 6B, when the lamp structure 100 is used with the three-dimensional mask 30, only a very small part of the tire cross section 511 will be fully illuminated by the LED light source 20, and the illuminance on the tire cross section 511 is the largest Value, only up to 1733 lux (lx), so the reflected light on the tire will not cause discomfort to the eyes of the bicycle rider, even when the tire is equipped with a metal mudguard, the discomfort caused by the reflected light of the mudguard is also Will be greatly reduced.

However, the above-mentioned embodiments are used to illustrate the characteristics of the present invention, and their purpose is to enable those who are familiar with the technology to understand the content of the present invention and implement them accordingly, rather than limiting the scope of the invention. Therefore, everything else does not depart from the present invention. The equivalent modification or modification completed by the spirit of the disclosure should still be included in the scope of patent application described below.

100: Car light structure to eliminate stray light in a specific area

10: Reflected light cup

110: cup body

120: Cup mouth

20: LED light source

30: three-dimensional mask

310: The first shading plate

320: second shading plate

510: Mudguard or tire

511: Tire section

Claims (3)

A vehicle lamp structure for eliminating stray light in a specific area, which is used to illuminate a target area. The vehicle lamp structure includes: A reflective light cup, which is a cup body and has a cup mouth; An LED light source, which is fixedly arranged in the cup; and A three-dimensional mask, fixed on the cup body and surrounding the outer side of the LED light source, has: A first light-shielding plate formed between the LED light source and the cup body of the reflective light cup; and A second light-shielding plate is formed between the LED light source and the mouth of the cup, and the second light-shielding plate is used to block the light from the LED light source directly projecting on a mudguard or a tire in the direction of the target area . In the vehicle lamp structure described in item 1 of the scope of patent application, the inner wall further has a light absorbing material. In the vehicle lamp structure described in item 1 of the scope of patent application, the reflective light cup is a multiple reflective surface light cup.

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