Lamp structure for improving illumination of reversing road surface
By designing two reflector structures in the headlights, the light emitted by the light source body is secondaryly reflected, which solves the problem of insufficient light intensity when reversing, and achieves more efficient concentrated and uniform light illumination.
Patent Information
- Application Number
- CN202420366585.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-27
AI Technical Summary
When the existing headlights are reversed, it is difficult to solve the problem that the light emitted by the light source body is directly emitted without being reflected by the reflective bowl, forming stray light.
A lamp structure is designed, including two reflectors, the light source body is located at the focus of the first reflector, the light outlet of the second reflector faces the light outlet of the first reflector, and the size of the second reflector The light is smaller than the first reflector, and the second reflector is reflected to the reflecting surface of the first reflector to achieve secondary reflection and improve the light intensity.
It effectively improves the illuminance of the reversing road surface, reduces stray light, enhances the light intensity, and avoids the impact on the first reflector.
Smart Images
Figure CN222210031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lamp devices, in particular to a lamp structure for improving the illumination of a reversing road surface. Background Art
[0002] In operations such as reversing, the high light intensity of the headlights makes it easier to illuminate the road and more convenient for the driver to observe the situation behind. The common way to increase the light intensity is to increase the power of the light source, but it is not easy to solve the energy consumption and heat dissipation problems. In this regard, some companies use a structure of adding a reflective bowl to the headlight. The light source is at the focus of the reflective bowl, and the light emitted by the light source is reflected by the reflective bowl and then emitted in parallel. However, in this structure, part of the light emitted by the light source is still emitted directly without being reflected by the reflective bowl, forming stray light, which needs further improvement. Utility Model Content
[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:
[0004] The present application document discloses a lamp structure for improving the illumination of a reversing road surface, comprising a reflector 1 and a light source body, wherein part of the light emitted by the light source body is reflected by the reflector 1 and then emitted in parallel, and further comprising a reflector 2, wherein the light source body is located between the reflector 1 and the reflector 2, and the light outlet of the reflector 2 faces the light outlet of the reflector 1, so that the reflector 2 reflects part of the light emitted by the light source body to the reflective surface of the reflector 1, and the size of the reflector 2 is smaller than that of the reflector 1.
[0005] In this solution, a lamp structure is designed by adding a second reflector on the basis of the first reflector. The scattered light of the light source that is not reflected by the first reflector shines on the second reflector. The light is reflected by the second reflector to the reflective surface of the first reflector and is reflected again by the first reflector, which helps to increase the light intensity.
[0006] The size of the reflective element 2 is smaller than that of the reflective element 1 to avoid significantly affecting the emission of light reflected by the reflective element 1. The size refers to the length or width, etc.
[0007] For the configuration of the reflector one, such as the common regular curved surface type, or the free curved surface type, etc., preferably, the reflector one is parabolic, and the parabola is a common reflective configuration, such as a rotating parabola, a semi-rotating parabola, or a portion cut from a rotating parabola, such as 1 / 3, 1 / 4, 1 / 5, etc., all are possible, to ensure that part of the light emitted by the light source can be reflected by the reflector one and then emitted in parallel, and the light reflected by the reflector two to the reflective surface of the reflector one and then reflected twice can be emitted in parallel or non-parallel.
[0008] Furthermore, the light source is at least partially located at the focus of the reflector 1, ensuring that more light emitted by the light source is reflected by the reflector 1 and emitted in parallel, thereby increasing the light intensity.
[0009] For the configuration of the reflector 2, a regular curved surface or a free-form curved surface can also be selected to ensure that part of the light irradiated from the light source to the reflector 2 is reflected to the reflector 1. Of course, the higher the reflectivity of the reflector 2, the better.
[0010] Preferably, the transverse cross section of the second reflective element is in the shape of an elliptical arc and the longitudinal cross section thereof is in the shape of a straight line.
[0011] Furthermore, the light source is at least partially located on the center line of the second reflector, thereby improving the reflectivity of the second reflector to light.
[0012] Furthermore, the length and width of the second reflector are smaller than those of the first reflector, and the light emitting effect is good.
[0013] Furthermore, the length of the second reflector is less than 1 / 4 of the length of the first reflector, and the width of the second reflector is less than 1 / 2 of the width of the first reflector.
[0014] Furthermore, the reflective surface of the reflective element 1 is composed of a plurality of regular or irregular reflective sheets, and adding reflective sheets helps to improve the uniformity of illumination.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The utility model designs the structure of the lamp, and the reflector 1 and the reflector 2 cooperate with the light source body, which helps to improve the light intensity of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 is a schematic structural diagram of the lamp structure in Example 1;
[0019] Figure 2 yes Figure 1 Schematic diagram of the transverse cross-sectional structure;
[0020] Figure 3 yes Figure 1 Schematic diagram of the longitudinal cross-sectional structure;
[0021] Figure 4 is a schematic diagram of the light trajectory;
[0022] Figure 5 is a schematic diagram of the light trajectory;
[0023] Wherein, the accompanying drawings are marked as follows:
[0024] 1. Light source; 2. Reflector 1; 3. Reflector 2; 21. Reflector sheet; 31. Center line. DETAILED DESCRIPTION
[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] Example 1
[0027] like Figure 1-Figure 3 As shown, in this example, a lamp structure for improving the illumination of the reversing road surface includes a reflector 1 2, a light source 1, and a reflector 2 3, wherein the light source is directly purchased from the market, such as a common LED type in this example, and the reflector 1 2 is a parabolic type, such as Figure 1 As shown, a portion of the rotating parabola is cut off as the reflector 1, which is placed vertically. The light source 1 is at the focus of the reflector 2, or part of the light-emitting elements in the light source 1 is at its focus. Then part of the light emitted by the light source is emitted to the reflective surface of the reflector 2, and is reflected by the reflector 2 and emitted in parallel. Figure 5 A plurality of reflective sheets 21 may be selected to form a reflective surface of a reflective member, such as Figure 1 As shown, the arc-shaped protrusions are used as reflective sheets, and a plurality of arc-shaped protrusions form a reflective surface, which helps to improve the uniformity of light output.
[0028] In this example, reflector 2 3 is arranged on the other side of light source body 1 opposite to reflector 1 2, light source body 1 is between reflector 1 2 and reflector 2 3, light outlet of reflector 2 3 faces light outlet of reflector 1 2, size of reflector 2 3 is smaller than size of reflector 1 2, part of light emitted by light source body 1 is emitted to reflective surface of reflector 2, reflected by reflector 2 to reflective surface of reflector 1, emitted by reflector 1 again, part of light emitted after secondary reflection is emitted in parallel, part of light is emitted in non-parallel, see Figure 4 , Figure 5 Indicated by the arrow.
[0029] In this example, the reflective member 2 3 is in the shape of an arc sheet, the transverse cross section of the reflective member 2 3 is in the shape of an arc and the longitudinal cross section is in the shape of a straight line. Figure 1-Figure 3 As shown, the light source body 1 is on the center line 31 of the reflector 2 3, or part of the light emitting elements in the light source body are on the center line of the reflector 2, which helps to reflect more light emitted by the light source body to the reflective surface of the reflector 1. Of course, the shape of the reflector 2 can also be freely selected, and the higher the reflectivity, the better. Figure 3As shown, the length (center line direction) of the reflective element 2 3 is preferably less than 1 / 4 of the length of the reflective element 1 2. Figure 2 As shown, the width of the second reflector 3 is less than 1 / 2 of the width of the first reflector 2, so as to avoid significantly affecting the emission of light from the first reflector and further affecting the light intensity.
[0030] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.
Claims
1. A lamp structure for improving the illumination of a road surface for reversing, comprising a reflector (2) and a light source (1), wherein a portion of light emitted by the light source (1) is reflected by the reflector (2) and then emitted in parallel, wherein: The invention also comprises a second reflector (3), wherein the light source body (1) is located between the first reflector (2) and the second reflector (3), and the light outlet of the second reflector (3) faces the light outlet of the first reflector (2), so that the second reflector (3) reflects part of the light emitted by the light source body to the reflective surface of the first reflector (2), and the size of the second reflector (3) is smaller than the size of the first reflector (2).
2. A lamp structure for improving the illumination of a reversing road surface as claimed in claim 1, characterized in that: The reflective element 1 (2) is parabolic in shape.
3. A lamp structure for improving the illumination of a reverse road surface as claimed in claim 1, characterized in that: The light source (1) is at least partially located at the focal point of the reflector (2).
4. A lamp structure for improving the illumination of a reverse road surface as claimed in claim 1, characterized in that: The transverse cross section of the second reflective element (3) is in the shape of an elliptical arc and the longitudinal cross section is in the shape of a straight line.
5. A lamp structure for improving the illumination of a reversing road surface as claimed in claim 4, characterized in that: The light source body (1) is at least partially located on the center line (31) of the second reflector (3).
6. A lamp structure for improving the illumination of a reverse road surface as claimed in claim 1, characterized in that: The length and width of the second reflective member (3) are smaller than the length and width of the first reflective member (2).
7. A lamp structure for improving the illumination of a reverse road surface as claimed in claim 6, characterized in that: The length of the second reflector (3) is less than 1 / 4 of the length of the first reflector, and the width of the second reflector is less than 1 / 2 of the width of the first reflector.
8. The lamp structure for improving the illumination of a reverse road surface as claimed in claim 1, characterized in that: The reflective surface of the reflective element 1 (2) is composed of a plurality of regular reflective sheets (21).