Low-beam enhanced vehicle lamp illumination optical device and vehicle

Abstract

The utility model discloses a low-beam enhanced car lamp illumination optical device which comprises a lens, a first light source, a first reflecting mirror, a second light source and a second reflecting mirror, and the light of the first light source is reflected by the first reflecting mirror and then is emitted out through the lens. The light of the second light source is reflected and focused by the second reflector, then reflected by the first reflector and emitted through the lens, and the light of the first light source emitted by the lens and the light of the second light source jointly form a passing light shape. The utility model further discloses a vehicle comprising the low-beam enhanced vehicle lamp illumination optical device. The layout flexibility of the low-beam car lamp illumination can be improved, the heat dissipation effect is guaranteed, and meanwhile the low-beam illumination intensity is enhanced.

Description

Technical Field

[0001] The utility model relates to a vehicle lamp device, in particular to a low beam enhanced vehicle lamp lighting optical device and a vehicle. Background Art

[0002] With the development of automotive technology, the performance requirements for vehicle lamp lighting optical devices are getting higher and higher. For the low beam lighting function, the requirements for optical efficiency, luminous flux, and illuminance are getting higher and higher. In many situations, a higher lighting intensity for the low beam is required to improve the driving safety of the vehicle under low beam lighting conditions. In the prior art, to achieve the above purposes, mainly by additionally installing a complete low beam lighting optical device or adding light sources in the original low beam lighting optical device. Additionally installing a complete low beam lighting optical device requires a large space and is costly, while the method of adding light sources mainly affects the heat dissipation performance of the device, and sometimes there is not enough space for adjusting the layout of the heat dissipation structure. Summary of the Utility Model

[0003] Aiming at the above-mentioned defects of the prior art, the task of the present utility model is to provide a low beam enhanced vehicle lamp lighting optical device, and another task of the present utility model is to provide a vehicle including the low beam enhanced vehicle lamp lighting optical device, which improves the layout flexibility of the low beam vehicle lamp lighting, ensures the heat dissipation effect while enhancing the low beam lighting intensity.

[0004] The technical solution of the present utility model is as follows: A low beam enhanced vehicle lamp lighting optical device includes a lens, a first light source, and a first reflector. The light of the first light source is reflected by the first reflector and then emitted through the lens. It further includes a second light source and a second reflector. The light of the second light source is reflected and focused by the second reflector, then reflected by the first reflector and emitted through the lens. The light of the first light source and the light of the second light source emitted by the lens together form a low beam light pattern.

[0005] Further, the first reflecting surface of the first reflector and the second reflecting surface of the second reflector are ellipsoidal surfaces. The first light source is arranged at the first focal position of the first reflecting surface, the second light source is arranged at the first focal position of the second reflector, and the second focal position of the second reflector coincides with the first focal position of the first reflecting surface.

[0006] Further, the lens is a convex lens, and the focal position of the lens coincides with the second focal position of the first reflecting surface.

[0007] Further, the first reflecting surface of the first reflector is arranged forward and downward, and the second reflecting surface of the second reflector is arranged backward and upward.

[0008] Further, the intersection line between the first reflection surface of the first mirror and the bottom end surface of the first mirror forms a cut-off line for low beam.

[0009] Further, the first light source is disposed on the first heat sink, and the second light source is disposed on the second heat sink.

[0010] Further, the first heat sink is provided with a notch through which the light of the second light source reflected and focused by the second mirror passes.

[0011] The advantages of the present utility model compared with the prior art are as follows:

[0012] By configuring two sets of light sources and mirrors, the present utility model reflects the light formed by the second light source and the second mirror together with the light of the first light source through the first mirror, and then emits the light through the lens to form a low beam light pattern. Therefore, while enhancing the low beam intensity, the light sources are separately arranged, and the shapes and positions of the first mirror and the second mirror can be adjusted to flexibly arrange the light sources.

[0013] Since the second light source utilizes both the first mirror and the second mirror, the folded optical path reduces the device volume, and at the same time avoids the problem of double increase in cost and volume caused by the need to repeatedly set optical elements for multiple sets of independent devices, and both the space utilization rate and the optical utilization rate are relatively high.

[0014] The separately arranged light sources can ensure the heat dissipation effect by respectively arranging corresponding heat sinks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front perspective three-dimensional structural schematic diagram of a low beam enhanced vehicle headlamp lighting optical device.

[0016] Figure 2 is a rear perspective three-dimensional structural schematic diagram of a low beam enhanced vehicle headlamp lighting optical device.

[0017] Figure 3 is a top perspective three-dimensional structural schematic diagram of a low beam enhanced vehicle headlamp lighting optical device.

[0018] Figure 4 is Figure 3 the sectional structural schematic diagram taken along A-A of

[0019] Figure 5 is a schematic diagram of the optical path direction in the low beam enhancement mode of a low beam enhanced vehicle headlamp lighting optical device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with embodiments, but it is not limited to the present utility model.

[0021] A vehicle involved in this embodiment is equipped with a low-beam enhanced headlight lighting optical device. Please refer to Figures 1 to 5 As shown, the low-beam enhanced headlight lighting optical device includes a lens 1, a first reflector 2, a first light source 3, a first circuit board 4, a first radiator 5, a second radiator 6, a second circuit board 7, a second light source 8, and a second reflector 9.

[0022] The lens 1 is a long strip-shaped convex lens. The front end is the light-emitting surface 101, and the rear end is the light-incident surface 102. The lens 1 is mainly used to control the focusing and projection of the low-beam light C and the low-beam enhanced light D, which can improve the lighting effect and enhance driving safety.

[0023] Behind the lens 1 is a double-reflector configuration, that is, it includes a first reflector 2 and a second reflector 9. The first reflector 2 and the second reflector 9 are arranged opposite to each other. The first reflector 2 is correspondingly provided with a first light source 3, and the second reflector 9 is correspondingly provided with a second light source 8. Both the first light source 3 and the second light source 8 are LED light sources. The first light source 3 and the supporting first circuit board 4 are both arranged on the first radiator 5, and the second light source 8 and the supporting second circuit board 7 are both arranged on the second radiator 6. Each light source is provided with a radiator, and they can be spaced apart in space, which helps to improve the heat dissipation efficiency.

[0024] In order to improve the utilization rate of light and reduce the overall package size of the optical device, the present utility model makes the optical system for low-beam enhancement reuse the reflecting surface of the main low-beam. The two optical systems interact with each other, complement each other, and support each other functionally, improving the spatial multiplexing rate. Specifically, the first reflector 2 is arranged behind the lens 1, and it is provided with an ellipsoidal first reflecting surface 201. The first reflecting surface 201 is a concave surface and is arranged forward and downward. The first focus of the first reflecting surface 20 is set at the optical center of the first light source 3, and the second focus of the first reflecting surface 201 is set at the focus of the lens 1, which helps to focus the light on the low-beam area.

[0025] The second reflector 9 is also arranged behind the lens 1, but its position is lower than that of the first reflector 2. The second reflector 9 is provided with an ellipsoidal second reflecting surface 901. The second reflecting surface 901 is a concave surface and is arranged backward and upward, opposite to the first reflecting surface 201. The first focus of the second reflecting surface 901 is set at the optical center of the second light source 8, and the second focus of the second reflecting surface 901 is set at the optical center of the first light source 3, that is, it coincides with the position of the first focus of the first reflector 2.

[0026] In order to further optimize the low beam illumination effect and reduce the blockage of the light rays of the second light source 8 by the first circuit board 4 and the first heat sink 5, both the first circuit board 4 and the first heat sink 5 are provided with notches for avoiding the light rays of the second light source 8 condensed and reflected by the second reflecting surface 901, so as to provide an optical path space in the vertical direction to enable the light rays of the second light source 8 to irradiate the first reflecting surface 201 as much as possible.

[0027] As a preferred embodiment, in this embodiment, the light shielding plate is reduced in setting, and a low beam cut-off line 202 is formed at the intersection line of the first reflecting surface 201 of the first reflecting mirror 2 and the bottom end surface of the first reflecting mirror 2, which helps to generate a light beam with an obvious light and dark dividing line, improve the directivity of illumination and reduce the glare to oncoming vehicles, and optimize the illumination effect.

[0028] The optical path structure of the low beam enhanced vehicle headlamp illumination optical device of this embodiment is as Figure 5 shown. When the low beam enhancement system is used, after the low beam enhancement light rays D emitted by the second light source 8 are condensed and reflected by the second reflecting surface 901, the low beam enhancement light rays D pass through the notches of the first circuit board 4 and the first heat sink 5. After the low beam enhancement light rays D and the low beam light rays C formed by the first light source 3 are condensed and reflected by the first reflecting surface 201 together, they irradiate into the light incident surface 202 of the lens 1. After the low beam enhancement light rays D and the low beam light rays C are refracted by the lens 1, they are jointly irradiated onto the front road surface through the light exit surface 101 of the lens 1 to form a low beam light pattern, thus playing a role in enhancing the low beam effect.

Claims

1. A low beam enhanced vehicle headlight illumination optical device, comprising a lens, a first light source and a first reflector, wherein the light of the first light source is reflected by the first reflector and then emitted through the lens, characterized in that, The low beam enhanced headlight lighting optical device further includes a second light source and a second reflector. The light from the second light source is reflected and focused by the second reflector, then reflected by the first reflector and emitted through the lens. The light from the first light source emitted by the lens and the light from the second light source together form a low beam light pattern.

2. The low beam enhanced headlight illumination optical device according to claim 1, characterized in that, The first reflecting surface of the first reflector and the second reflecting surface of the second reflector are ellipsoidal surfaces. The first light source is arranged at the first focal point position of the first reflecting surface, the second light source is arranged at the first focal point position of the second reflector, and the second focal point position of the second reflector coincides with the first focal point position of the first reflecting surface.

3. The low beam enhanced headlight illumination optical device according to claim 2, characterized in that The lens is a convex lens, and the focal point position of the lens coincides with the second focal point position of the first reflecting surface.

4. The low beam enhanced vehicle headlamp lighting optical device according to claim 1, characterized in that, The first reflecting surface of the first reflector is arranged forward and downward, and the second reflecting surface of the second reflector is arranged backward and upward.

5. The low beam enhanced vehicle headlamp illumination optical device according to claim 4, characterized in that, The intersection line of the first reflecting surface of the first reflector and the bottom end surface of the first reflector forms a low beam cut-off line.

6. The low-beam enhanced vehicle headlamp lighting optical device according to claim 1, characterized in that, The first light source is arranged on the first radiator, and the second light source is arranged on the second radiator.

7. The low beam enhanced headlight illumination optical device according to claim 1, characterized in that The first radiator is provided with a notch for the light from the second light source reflected and focused by the second reflector to pass through.

8. A vehicle, characterized in that, Comprising the low beam enhanced headlight lighting optical device according to any one of claims 1 to 7.

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