CN209744279U

CN209744279U - Bifocal convex lens type high-low beam vehicle lamp without moving separation blade

Info

Publication number: CN209744279U
Application number: CN201920738881.5U
Authority: CN
Inventors: 朱国强; 朱凌青
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2019-12-06
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a no motion separation blade bifocal convex lens formula distance and passing light car light, which comprises a mounting bracket, utilize the light efficiency of LED light source, through independently matching exclusive distance reflector and low beam reflector, thereby it does not need the motion baffle to realize the corresponding focus position of bifocal convex lens with the light high efficiency of the distance light source that will correspond and passing light source is concentrated respectively, just can realize the bifocal lens formula car light of distance and passing light switching each other, because distance light and passing light have independent speculum separately, can make its grading performance that satisfies the correspondence with the speculum more pointed ground optimization, make full use of and the light efficiency utilization ratio of performance light source, play comprehensive energy-conserving effect.

Description

Bifocal convex lens type high-low beam vehicle lamp without moving separation blade

Technical Field

The utility model belongs to the technical field of the grading of two light lens in the car light, specifically speaking relates to a no motion separation blade bifocal convex lens formula distance and passing light car light.

background

According to the national road traffic regulation, the motor vehicles or electric vehicles on the road in China must have the functions of high beam and low beam at the same time, and can smoothly and effectively change the high beam and the low beam, which is one of the national mandatory regulations of vehicle headlamps.

The minimum brightness value of the high beam in the vehicle lamp standard is about 8-10 times of the minimum brightness value of the low beam, so the energy concentration ratio of the high beam is required to be much higher than that of the low beam. In the prior art, the convex lens used by the double-light lens car lamp is single-focus, that is, the convex lens only has one focus, and the cut-off line blocking piece is generally arranged at the focus of the convex lens at the lower half area of the lens for blocking the redundant light entering the lens in order to realize the cut-off line between light and dark. In the case of high beam, in order to meet the light-gathering requirement of high beam, the high beam must pass through the focal point, and the stop line stop plate of low beam just blocks the position of the focal point to greatly obstruct the high beam. Therefore, in order to prevent the energy of the high beam from being blocked in the double-lens vehicle lamp, the near beam cut-off line baffle is designed to be movable, when the vehicle is near, the baffle is positioned at the focus of the convex lens to block the redundant light (which is emitted to the eyes of the opposite and traveling vehicles and pedestrians when used on the road) originally emitted to the light distribution screen 1 (cited by the above regulatory standard), so as to form an excellent light and shade cut-off line, and the baffle can actively withdraw from the focus position during the high beam, so that more light energy can be smoothly emitted into the lens through the focus position, and is refracted by the convex lens and then emitted from the spherical surface of the outer surface, thereby meeting the expected light distribution performance.

The disadvantages are as follows: 1 a moving baffle mechanism must be used to switch the distance and the near light. At present, the mechanism basically adopts electromagnet type attraction and is reset by being pushed by a spring, and the mechanism has four main defects:

(a) an electromagnet attraction type motion baffle mechanism is added, so that the manufacturing cost is obviously increased;

(b) The electromagnet attraction type motion baffle is pushed by electromagnet attraction and the reset of a spring to complete the switching action of far and near light, the mechanism can be blocked or broken down, so that the light changing of a car lamp is difficult or can not be changed, when a vehicle runs on a road, if the electromagnet attraction type motion baffle breaks down and can not normally run, a user can not correctly switch the far and near light according to the road condition, and the great potential safety hazard can be caused to the driver, the opposite pedestrians and the vehicle;

(c) When the electromagnetic type motion baffle mechanism is used, electric energy needs to be consumed independently, and energy conservation is not facilitated.

(d) Because of the need to install the electromagnetic movement mechanism, a corresponding installation space is necessary, which limits the compact vehicle lamp to a certain extent.

2. Because the near light and the far light completely share one set of integrated LED light source, when the near light is emitted, although the function of the far light is not used, the lamp beads originally serving the far light are also lighted together, which wastes electric energy, increases continuous heat productivity and is not beneficial to the overall heat dissipation of the product, so that a fan or the heat dissipation surface area of a base frame needs to be increased or the total power of the LED needs to be limited.

(a) The addition of a fan increases both the cost and the risk that the fan may fail.

(b) The expansion of the heat dissipation surface area of the base frame will increase the production cost and increase the product volume.

(C) Limiting the total power of the LED will inevitably result in a limited brightness.

3. Its high beam and short-distance beam share same speculum, because the grading side focus of far and near beam is different, and the high beam side focus is in the concentration degree of light, and the side focus of short-distance beam is in light distribution becomes certain width and ensures certain degree of consistency, so shared speculum is in order to compromise 2 different side focuses of person, will cause compatible fuzzy area, and the waste of light energy is great in fuzzy area.

The above method is not favorable for energy saving, and the utility model is provided in view of the above characteristics.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provide a far and near light car light of no motion separation blade bifocal convex lens formula, utilize the light efficiency of LED light source, through independently matching exclusive far light reflector and near light reflector, thereby the light high efficiency that will correspond far light source and near light source respectively projects the corresponding focus position of bifocal convex lens concentratedly and realizes not needing the motion baffle, just can realize the two light lens car light of far and near light switching each other. Because the high beam and the low beam have independent reflectors, the reflectors can be optimized more pertinently to meet the corresponding light distribution performance, the light efficiency utilization rate of the light source is fully utilized and exerted, and the effect of comprehensive energy conservation is achieved.

In order to solve the technical problem, the utility model adopts the following basic concept:

A motion-stop-free bifocal convex lens high and low beam vehicle lamp, the lamp core assembly comprising: high beam LED lamp bead, passing beam aluminum substrate, high beam aluminum substrate, aluminium system radiator, high beam reflector, low beam reflector, bifocal convex lens, convex lens mount. The central axis of the aluminum radiator is taken as a collimation line, an aluminum substrate A welded with dipped beam LED lamp beads is fixed on the upper part of the collimation line, the light emitting direction of the lamp beads on the substrate is projected to the right upper part, a dipped beam reflector is installed on the right upper part of the lamp beads, and the reflecting cavity surface of the reflector faces the dipped beam lamp beads; an aluminum substrate B welded with high-beam LED lamp beads is fixed at the lower part of the alignment line, the light emitting direction of the lamp beads on the substrate is projected to the right below, a high-beam reflector is installed right below, and the reflecting cavity surface of the reflector faces the high-beam lamp beads. A double-focus convex lens is arranged right in front of the aluminum radiator, and the convex lens and the aluminum radiator are connected and fixed through a convex lens fixing frame.

Furthermore, a near light stop line baffle is fixed on the low beam reflector.

For the more concise expression of the design idea of this patent, radiator unit in this structure: the high beam aluminum substrate, the low beam aluminum substrate, the aluminum heat sink, the lens holder, and the like are commonly indispensable and are not described here. The core component is composed of: the main light distribution component is composed of a near-beam exclusive LED light source, a near-beam exclusive reflector, a high-beam exclusive LED light source, a high-beam exclusive reflector and a common spherical bifocal convex lens. Referring to fig. 1, the optical axis center line of the bifocal convex lens is taken as a collimation line and is divided into an upper half area and a lower half area, a special light source responsible for low beams is designed on the optical axis center line of the upper half area, the light emitting direction of the light source is right above, a special reflector of the low beams is arranged on the upper portion of the light source, a special light source responsible for high beams is designed near the optical axis of the lower half area, the light emitting direction of the light source is right below, and a special reflector of the high beams is arranged on the lower portion of the light source.

Furthermore, the special reflector for the low beam consists of an elliptic curved surface, the ellipse has the characteristic of double focuses, when the light source is positioned at the focus A of the light source to emit light energy, the light energy is reflected by the ellipse and then emitted to the other focus B of the ellipse, the focus B is also designed to be overlapped with the long focus of the convex lens, and a light and shade cut-off line blocking piece is arranged at the long focus of the lens and blocks redundant unwanted light of the low beam (the light emitted to the light distribution screen 1 area originally and emitted to opposite vehicles and pedestrian eyes in actual driving), the upper height and the lower height of the blocking piece are not too large, the height within 2mm is good, and the interference to the high beam is small.

Furthermore, the special reflecting mirror for high beam consists of an elliptic curved surface, the ellipse has the characteristic of double focuses, when the light source is positioned at the focus 1, the light emitted by the elliptic curved surface is reflected to the other focus 2 of the ellipse, the focus 2 is overlapped with the short focus of the convex lens, and the light emitted by the high beam enters the convex lens through the short focus position of the convex lens after being reflected by the reflecting mirror, and is refracted out with the effect of concentrated light condensation.

Furthermore, the special reflector for the high beam and the low beam can be designed into a plurality of reflecting cavities, so that each reflecting cavity has an independent focus position, the LED light source can be scattered and distributed, the heat dissipation homogenization of the LED light source is facilitated, and the better heat dissipation effect is achieved.

This car light source falls into passing light source and distance light source to there are its exclusive high beam reflector and low beam reflector, and have the convex lens cooperation of spherical surface bifocal to use altogether, wherein the LED light source of being responsible for the passing light passes the passing light focus of bifocal convex lens and gets into convex lens through the reflection of low beam reflector, thereby the LED light source of being responsible for the distance light passes the distance light focus of bifocal convex lens and gets into convex lens through the reflection of high beam reflector thereby realizes possessing the car light design of passing light and passing light simultaneously.

By utilizing the light effect of the LED light source and independently matching the special high-beam reflector and the special low-beam reflector, the light of the corresponding high-beam light source and the light of the corresponding low-beam light source are respectively projected to the corresponding focus position of the bifocal convex lens in a high-efficiency concentrated manner, so that the double-optical lens type car lamp capable of realizing the mutual switching of the high-beam light and the low-beam light can be realized without a moving baffle. Because the high beam and the low beam have independent reflectors, the reflectors can be optimized more pertinently to meet the corresponding light distribution performance, the light efficiency utilization rate of the light source is fully utilized and exerted, and the effect of comprehensive energy conservation is achieved.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:

(1) because the high beam and the low beam have independent reflectors and pass through focuses, the respective light distribution side points can be designed more specifically, and the light efficiency of the LED is fully exerted. The light efficiency utilization rate is high, a light source with higher power is not needed, the cost value of the light source is in direct proportion to the power of the light source, the heat dissipation area and the manufacturing cost of the heat dissipation device are in direct proportion to the power of the light source, the light efficiency utilization rate is high, energy is saved, the cost of the light source is saved, and meanwhile, the cost of the heat dissipation device is saved.

(2) Because the change of far and near light is completed without a baffle plate movement mechanism, the light changing is more stable and reliable, the cost is more saved, and the power consumption is more energy-saving.

(3) The baffle motion mechanism is omitted, the space for accommodating the motion mechanism is saved, the product volume is smaller, and the automobile lamp with small volume can be adopted.

(4) The low beam reflector is on upper portion, and the high beam reflector is in the lower part, and 2 directions are arranged about LED lamp pearl can, have increased the scope of arranging the distribution, more are favorable to radiating homogenization. The effective homogenization of radiating effect also can protect the life of lamp pearl more.

(5) The design is ingenious, and the method has a wide popularization and application prospect.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

Fig. 1 is a side view of a high beam and low beam light distribution module composed of a common spherical bifocal convex lens, a cutoff stop, a low beam reflector, a high beam reflector, a low beam light source, and a high beam light source.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a perspective view of fig. 1.

Fig. 4 is a simulated shot (side view) of a low beam of an optical path in optiworks in the light distribution module of fig. 1.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a bottom view of fig. 4.

Fig. 7 is a simulated shot (side view) of the high beam of the optical path in optis works in the light distribution module of fig. 1.

Fig. 8 is a top view of fig. 7.

Fig. 9 shows that the IES file generated by the optis works software in the module of fig. 1 is imported into LucidStudio software to be qualified in the low beam detection result in the corresponding vehicle light regulations.

Fig. 10 shows that the IES file generated by the optis works software in the module of fig. 1 is imported into LucidStudio software to be qualified in the high beam detection result of the corresponding vehicle lamp regulations.

fig. 11 shows that the light distribution performance of the vehicle lamp can meet the high level in the ECE regulation after a little adjustment is made on the basis of fig. 1.

Fig. 12-15 are schematic structural views of an embodiment of the present invention.

In the figure: 101: a bifocal convex lens; 102 a convex lens holder; 103: an aluminum heat sink; 104 high beam lamp bead; 105 a high beam aluminum substrate; 106: a dipped beam lamp bead; 107: a dipped beam aluminum substrate; 108 a low beam reflector; 109 a high beam reflector; 110 near light cutoff stop.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

The light distribution performance described in the paper refers to the standard requirements corresponding to GB19152-2016, GB25991-2010, ECE R113 and ECE R112.

The OptisWorks software used in this article is a very excellent opto-mechanical design simulation software in the world.

the LucidStudio software applied in the method is the most authoritative professional software for designing, simulating, analyzing and testing the light distribution performance of the vehicle lamp in the vehicle lamp industry.

Example one

As shown in fig. 1 to 15, the bifocal convex lens type high and low beam vehicle lamp without moving baffles in the present embodiment includes a mounting bracket 1, a common spherical bifocal convex lens 2 is fixedly mounted at the left end of the mounting bracket 1, the common spherical bifocal convex lens 2 is provided with an upper half area 2-1 and a lower half area 2-2, a low beam cutoff baffle 3 is fixedly mounted in an inner cavity of the mounting bracket 1, a low beam reflector 4 is closely attached to the right end of the low beam cutoff baffle 3, a high beam reflector 5 is fixedly mounted in the inner cavity of the mounting bracket 1, and a low beam light source 6 and a high beam light source 7 are mounted between the low beam reflector 4 and the high beam reflector 5; the optical axis center lines of the low-beam light source 6 and the upper half area 2-1 are positioned on the same horizontal line, the light emitting direction of the low-beam light source 6 is right above, the high-beam light source 7 is positioned below the optical axis center line of the lower half area 2-2, and the light emitting direction of the high-beam light source 7 is right below; the low-beam reflector 4 and the high-beam reflector 5 are both formed by elliptic curved surfaces; the front side wall and the rear side wall of the mounting rack 1 are fixedly provided with radiating fins 8.

The special reflector for the dipped beam consists of an elliptic curved surface, the ellipse has the characteristic of double focuses, when the light source is positioned at the light energy emitted by the focus A, the light energy is reflected to the other focus B of the ellipse after being reflected by the ellipse, the focus B is also designed to be overlapped with the long focus of the convex lens, and a light and shade cut-off line blocking sheet is arranged at the long focus of the lens, the blocking sheet blocks the redundant unnecessary light of the dipped beam (the light beam which is originally irradiated to the 1 area of the light distribution screen and is irradiated to the opposite vehicle and the eyes of pedestrians in actual driving), the upper and lower height of the blocking sheet is not too large, the blocking sheet is better within 2mm, and the interference to the high beam is small.

The special reflecting mirror for the high beam consists of an elliptic curved surface, the ellipse has the characteristic of double focuses, when the light source is positioned at the focus 1, the light is reflected by the elliptic curved surface and then emitted to the other focus 2 of the ellipse, the focus 2 is overlapped with the short focus of the convex lens, and at the moment, the light emitted by the high beam light source enters the convex lens through the short focus of the convex lens after being reflected by the reflecting mirror, and is refracted out with the effect of concentrated light condensation.

The special reflector of distance light and passing light all can design into many reflection chambeies, and every reflection chamber all has independent focus position like this, and this just can scatter the distribution with the LED light source, more does benefit to the heat dissipation homogenization of LED light source like this, plays better radiating effect.

As can be seen in the figure, both the high beam light source and the low beam light source have their own separate reflectors, which is advantageous: the respective reflectors are completely independent, and can independently and completely exert design advantages without mutual restriction and limitation. Distance, advantage have been separated to distance light source and passing light source: the radiator is more beneficial to the homogenization of heat dissipation, the lighting condition can be separately controlled, and the design of a later-stage radiator is more beneficial.

As can be seen from the light path traces in the three angle views of fig. 4, 5 and 6, most of the light of the low beam is effectively utilized to pass through the convex lens, and the baffle plate can effectively block the unwanted light (originally emitted to the area of the light distribution screen 1).

As can be seen from fig. 7 and 8, the light beams of 2 colors do not interfere with each other, and the high beam can smoothly avoid the low beam stop, converge at the focus of the short focal length of the convex lens, and is emitted by the convex lens.

As can be seen from the above figure, the low beam has a very clear and straight cut-off line, and under the condition of luminous flux of 344lm, 7810cd illuminance can be obtained, and all detection data can meet the requirements of the corresponding detection standard of ECE 113R. The high beam HV point has excellent concentration, and under the condition of 1000lm luminous flux, 59900cd illumination can be obtained, and each item of detection data can meet the requirement of ECE113R corresponding detection standard. It is fully confirmed that the high beam is not affected by the baffle plate and the light energy is utilized and exerted very fully. The light distribution design is based on the light distribution design shown in fig. 11, and can completely meet the higher detection standard in ECE113R only by slightly moving 2 high beams and the distance of 0.3mm of lamp beads.

The multiple simulation results of the upper drawing are fully explained, the design and application of the LED lamp bead light source device enable the far-beam and near-beam designs to be more flexible, the selection range of the LED lamp bead light source is wider, a separation blade movement mechanism is completely omitted, the far-beam still can be excellent, and the whole volume can be designed to be smaller and the space for popularization and application is wider.

The vehicle lamp light source is divided into a near light source and a far light source, and is provided with a special high beam reflector and a special low beam reflector, and is matched with a spherical double-focal-length convex lens for use, wherein the LED light source responsible for the near light passes through a near light focus of the double-focal-length convex lens through the reflection of the low beam reflector and enters the convex lens, and the LED light source responsible for the far light passes through a far light focus of the double-focal-length convex lens through the reflection of the high beam reflector and enters the convex lens, so that the vehicle lamp design with the near light and the far light is realized.

The utility model discloses utilize the light efficiency of LED light source, through independently matching exclusive high beam reflector and low beam reflector, thereby the light that projects the corresponding focus position of bifocal convex lens with the high efficiency of the high beam source that corresponds and low beam source respectively concentrates realizes not needing the motion baffle, just can realize the double-light lens formula car light of far and near light inter switch. Because the high beam and the low beam have independent reflectors, the reflectors can be optimized more pertinently to meet the corresponding light distribution performance, the light efficiency utilization rate of the light source is fully utilized and exerted, and the effect of comprehensive energy conservation is achieved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. The utility model provides a no motion separation blade bifocal convex lens formula distance and passing light car light, includes mounting bracket (1), its characterized in that: the left end fixed mounting of mounting bracket (1) has common sphere bifocal convex lens (2), common sphere bifocal convex lens (2) are equipped with first half district (2-1) and second half district (2-2), the inner chamber fixed mounting of mounting bracket (1) has short-distance beam light and dark cut-off line separation blade (3), the right-hand member of short-distance beam light and dark cut-off line separation blade (3) closely laminates and has short-distance beam reflector (4), the inner chamber fixed mounting of mounting bracket (1) has distance beam reflector (5), be equipped with between short-distance beam reflector (4) and the distance beam reflector (5) short-distance beam light source (6) and distance beam light source (7).

2. The stop-free bifocal headlight of claim 1, wherein the light source (6) and the center line of the upper half (2-1) are on the same horizontal line, the light emitting direction of the light source (6) is directly above, the light source (7) is below the center line of the light axis of the lower half (2-2), and the light emitting direction of the light source (7) is directly below.

3. The stop-free bifocal lenticular lens type high-and-low beam vehicle lamp according to claim 1, characterized in that the low-beam reflector (4) and the high-beam reflector (5) are each composed of an elliptic curved surface.

4. The vehicle headlight with high and low beams as defined in claim 1, wherein the front and rear side walls of said mounting frame (1) are fixedly provided with heat dissipating fins (8).

5. The stop-free bifocal headlamp of claim 1, wherein the common spherical bifocal convex lens (2) is fixedly connected to the lens holder (9) and is mounted on the left side of the mounting frame (1).