CN205014219U - Throw formula auto bulb - Google Patents
Throw formula auto bulb Download PDFInfo
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- CN205014219U CN205014219U CN201520569379.8U CN201520569379U CN205014219U CN 205014219 U CN205014219 U CN 205014219U CN 201520569379 U CN201520569379 U CN 201520569379U CN 205014219 U CN205014219 U CN 205014219U
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- reflector
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- auto bulb
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Abstract
An embodiment of the utility model discloses a throw formula auto bulb, include: light source, reflection of light cup, lens and catoptric system. Reflection of light cup is configured as the reflection the light that the light source sent, lens are configured as the receipt the light sum that the light source sent the light of reflection of light cup reflection to catoptric system be configured as with reflection of light cup reflects light outside the lens at least some reflect on the lens.
Description
Technical field
Embodiment of the present utility model relates to car lighting field, and relates more specifically to projection-type auto bulb.
Background technology
Projection-type auto bulb, sometimes also referred to as ellipsoid projecting unit (PolyEllipsoidSystem, PES), is the difunctional lighting device of distance-light conventional in car lighting, generally includes light source, elliposoidal reflector, light barrier and projection lens.This auto bulb can provide comparatively uniform beam pattern, clearly dead line and less dazzle.In recent years, light emitting diode (LED) assembly replaces the light sources such as traditional Halogen lamp LED or gas-discharge lamp, becomes light source more and more conventional in automotive lighting.If use LED in projection-type auto bulb, be then difficult to realize perfect intensity distribution, particularly for high beam situation.This is not mainly because different from the conventional light source such as Halogen lamp LED, LED is that 360 ° of omniranges are irradiated, but generally only has the distribution angle of 180 °, even may be less.In this case, for high beam situation, be difficult to obtain the larger and perfect light distribution of intensity.Therefore, need to design especially for non-omnirange light sources such as LED, to expect the efficiency of raising projection-type auto bulb and to improve light distribution, particularly for high beam situation.
Utility model content
Embodiment of the present utility model aims to provide a kind of projection-type auto bulb that can solve or improve the problems referred to above.
According to an aspect of the present utility model, this projection-type auto bulb comprises: light source, reflector, lens and reflecting system.Reflector is configured to reflect the light that described light source sends, lens are configured to receive the light of light that described light source sends and the reflection of described reflector, and reflecting system is configured to described reflector to reflex to reflexing at least partially on described lens of the light outside described lens.
According to an embodiment, projection-type auto bulb also comprises: light barrier, is configured to block the light of reflector reflection at least partially.
According to an embodiment, light barrier is also configured to block the light of reflecting system reflection at least partially.
According to an embodiment, reflector has the shape of semielliptical shape.
According to an embodiment, reflecting system comprises the first reflector and the second reflector, wherein the first reflector is configured to reflector to reflex to reflexing at least partially on the second reflector of the light outside lens, and the second reflector is configured to the light at least partially of described reflection to reflex on lens.
According to an embodiment, the first reflector is positioned at the edge of the close reflector side of the light outlet of reflector, and the second reflector is between reflector and light barrier.
According to an embodiment, the second reflector is positioned at light barrier side relative to reflector.
According to an embodiment, the reflecting surface of the first reflector has curve form, and the focus of the first reflector is between the first reflector and the second reflector.
According to an embodiment, the first reflector has the surface configuration of spherical, elliposoidal or paraboloidal.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 a is the schematic diagram of diagram according to the cross section along optical axis of a projection-type auto bulb of prior art;
Fig. 1 b is the distance light surface of intensity distribution of the projection-type auto bulb shown in Fig. 1 a;
Fig. 2 a is the schematic diagram of diagram according to the cross section along optical axis of another perspective formula auto bulb of prior art;
Fig. 2 b is the distance light surface of intensity distribution of the projection-type auto bulb shown in Fig. 2 a;
Fig. 3 a is the schematic diagram of diagram according to the cross section along optical axis of the projection-type auto bulb of embodiment of the present utility model; And
Fig. 3 b-Fig. 3 c is distance light and the dipped beam surface of intensity distribution of the projection-type auto bulb shown in Fig. 3 a respectively.
Detailed description of the invention
Some example embodiment below with reference to the accompanying drawings describe principle of the present utility model and spirit.Should be appreciated that describing these embodiments is only used to enable those skilled in the art understand better and then realize the utility model, and not limit scope of the present utility model by any way.
Fig. 1 a illustrates the schematic diagram in the cross section along optical axis of the projection-type auto bulb 100 according to prior art.As shown in Figure 1a, projection-type auto bulb 100 comprises light source 101, reflector 102, light barrier 103 and projection lens 104.Light source 100 can be traditional Halogen lamp LED or gas-discharge lamp etc.Because the Light distribation of these light sources spreads all over whole solid space substantially, therefore, the light reflection incided on it can be gone out by reflector 102, and wherein most of light arrives projection lens 104.The reflecting surface shape of reflector 102 can be elliposoidal, and light source 101 can be arranged in a focus of this ellipsoid.Light barrier 103 may be used for realizing bifunctional switching, i.e. the switching of high beam and dipped headlights.As mentioned above, when not applying light barrier 103, most of light that glow cup 102 reflects all is incident on projection lens, and at this moment high beam 110 and low beam 112 exist simultaneously, namely can realize high beam.And when applying light barrier 103, high beam 110 part is blocked by light barrier, thus realizes dipped headlights.Fig. 1 b illustrates the distance light surface of intensity distribution of the projection-type auto bulb 100 shown in Fig. 1 a.By applying light barrier, the light outside dead line in the distance light surface of intensity distribution (such as, as shown in Fig. 1 b, Fig. 2 b and Fig. 3 b) can be blocked, thus obtain the dipped beam surface of intensity distribution (such as, Fig. 3 c).In other words, in the surface of intensity distribution, the light beam on dead line is high beam, and the light beam under dead line is low beam.Generally speaking, in the optical design to projection-type auto bulb, can by dead line design near transverse axis.That is, high beam is primarily of light distribution assessment more than transverse axis.Therefore, for simplicity, in description and accompanying drawing, some dipped beam surfaces of intensity distribution are eliminated.In addition, it should be noted that the surface of intensity distribution and describe mainly in order to clearly represent relevant technique effect to those skilled in the art, instead of limiting its protection domain.Further, even if when not providing the surface of intensity distribution, those skilled in the art also can according to herein to the specific descriptions of embodiment, expect correlation technique effect of the present utility model.
In the last few years, along with the development of solid-state illumination, the light sources such as LED become main car lighting light source gradually.Fig. 2 a illustrates according to the schematic diagram as the cross section along optical axis of the perspective formula auto bulb of light source such as use LED of prior art, and Fig. 2 b illustrates the distance light surface of intensity distribution of the projection-type auto bulb shown in Fig. 2 a.Because LED light source generally only has the distribution angle of 180 ° in its light-emitting area, sometimes may be even less, this just makes, when using LED etc. as light source, not need the reflector 102 used as shown in fig. ia, but only need adopt semielliptical shape reflector 202 as shown in Figure 2 a.But as shown in Figure 2 a, the wide part reflected via reflector 202 is low beam 212, and cannot have an impact to high beam.Therefore, this just may cause the luminance shortage of high beam, or the light distribution of distance light is not ideal enough.As shown in Figure 2 b, the high beam light distribution of the auto bulb 200 of Fig. 2 a can not show a candle to the high beam light distribution shown in Fig. 1 b.
As shown in Figure 2 a, the light 214 having part to emit from light source incides outside projection lens 204, and does not play the effect of illumination.If can be collected by this part light 214 by a kind of optical system, and reflex on projection lens 204, then can improve the efficiency of auto bulb 200, particularly in high beam situation.Further, by the design of this optical system, the Light distribation in high beam situation can be improved.Such as, by the design of this optical system, most of light can be reflexed on dead line, or can design this optical system according to light distribution patterns, or further combined with the emulation based on optical ray trace model etc., this optical system can be optimized.
Fig. 3 a illustrates the schematic diagram in the cross section along optical axis of the projection-type auto bulb 300 according to embodiment of the present utility model.As shown in Figure 3 a, this optical system may further include the first reflector 205 and the second reflector 206.First reflector 205 is configured to the light that can not be received by reception projection lens 204, and reflects it on the second reflector 206.These light can be reflexed to projection lens 204 by the second reflector 206 more further.According to an embodiment, the first reflector 205 can be positioned at the edge of close reflector 202 side of the light outlet of reflector 202, and the second reflector 206 can between reflector 202 and light barrier 203.Preferably, the second reflector 206 is arranged at light barrier 203 side relative to reflector 202.Light beam can be applied to high beam situation by such design as much as possible, to improve luminous intensity in high beam situation and/or light distribution.
First reflector and the light collected by the second reflector not only can improve luminous intensity and the distribution of high beam, equally also can improve luminous intensity and the distribution of low beam, if (only have dipped beam there is no distance light when only having dipped beam, baffle plate maintains static), luminous intensity and the distribution of dipped beam also can be improved with this design.
Fig. 3 b-Fig. 3 c is distance light and the dipped beam surface of intensity distribution of the projection-type auto bulb 300 shown in Fig. 3 a respectively.As shown in Figure 3 b, the distance light surface of intensity distribution of projection-type auto bulb 300 has obvious improvement relative to the distance light light distribution shown in Fig. 2 b.This not only can be embodied on the absolute value of intensity level, and can be embodied in the distribution of intensity.In addition, compared with the dipped headlights light distribution with dead line clearly shown in Fig. 3 c, the part of distance light light distribution on dead line shown in Fig. 3 b is more obvious.
According to an embodiment, the reflecting surface of the first reflector 205 can have curve form, and the focus of the first reflector 205 can between the first reflector 205 and the second reflector 206.Thus, light reflection can be an imaginary light source before the second reflector 206 by the first reflector 205.Then, light can be considered as launching from imaginary light source, based on the situation such as position of this imaginary light source, the second reflector 206 can carry out design further to expect to reach the light intensity distributions of expectation, or also can directly design the second reflector 206 according to light distribution patterns.According to an embodiment, the first reflector 205 can have the surface configuration of spherical, elliposoidal or paraboloidal.But the surface configuration that it should be noted that the first reflector 205 not necessarily rule.Such as, can obtain the first reflector 205 of certain surface shape according to light distribution patterns and optical ray trace model etc., at this moment its surface configuration may be irregular, and may not have the focus determined.Preferably, in conjunction with cost of manufacture etc., reflector can be carried out designing and making according to comparatively regular surface configuration.
Describe its principle in conjunction with specific embodiment of the utility model above, but be not limited to its scope.Scope of the present utility model is limited by likely combining of the feature set forth in claims and claims.In addition, in description of the present utility model and appended claims, the term used " comprises ", " comprising " and similar terms are appreciated that open-ended term, namely " comprise/including but not limited to ".Term " one ", " another " etc. are also intended to comprise plural number.
Claims (9)
1. a projection-type auto bulb, is characterized in that, comprising:
Light source;
Reflector, is configured to reflect the light that described light source sends;
Lens, are configured to receive the light of light that described light source sends and the reflection of described reflector; And
Reflecting system, is configured to described reflector to reflex to reflexing at least partially on described lens of the light outside described lens.
2. projection-type auto bulb according to claim 1, is characterized in that, also comprise:
Light barrier, is configured to block the light of described reflector reflection at least partially.
3. projection-type auto bulb according to claim 2, is characterized in that,
Described light barrier is also configured to block the light of described reflecting system reflection at least partially.
4. projection-type auto bulb according to claim 1, is characterized in that, described reflector has the shape of semielliptical shape.
5. projection-type auto bulb according to claim 1, is characterized in that, described reflecting system comprises the first reflector and the second reflector,
Wherein said first reflector is configured to described reflector to reflex to reflexing at least partially on the second reflector of the light outside described lens, and described second reflector is configured to the light at least partially of described reflection to reflex on described lens.
6. projection-type auto bulb according to claim 2, is characterized in that, described reflecting system comprises the first reflector and the second reflector,
Wherein said first reflector is positioned at the edge of the close described reflector side of the light outlet of described reflector, and described second reflector is between described reflector and described light barrier.
7. projection-type auto bulb according to claim 6, is characterized in that, described second reflector is positioned at described light barrier side relative to described reflector.
8. projection-type auto bulb according to claim 5, is characterized in that, the reflecting surface of described first reflector has curve form, and the focus of described first reflector is between described first reflector and described second reflector.
9. projection-type auto bulb according to claim 8, is characterized in that, described first reflector has the surface configuration of spherical, elliposoidal or paraboloidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569379.8U CN205014219U (en) | 2015-07-31 | 2015-07-31 | Throw formula auto bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569379.8U CN205014219U (en) | 2015-07-31 | 2015-07-31 | Throw formula auto bulb |
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|---|---|
| CN205014219U true CN205014219U (en) | 2016-02-03 |
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| CN201520569379.8U Active CN205014219U (en) | 2015-07-31 | 2015-07-31 | Throw formula auto bulb |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519864A (en) * | 2018-11-28 | 2019-03-26 | 安徽康沃车灯科技有限公司 | A kind of reflective half cup of vehicle front lighting headlight system |
| CN109539167A (en) * | 2018-11-28 | 2019-03-29 | 安徽康沃车灯科技有限公司 | A kind of vehicle front lighting headlight system |
| CN114263891A (en) * | 2020-09-16 | 2022-04-01 | 常州星宇车灯股份有限公司 | Method for designing hyperboloid collimating lens for car lamp |
-
2015
- 2015-07-31 CN CN201520569379.8U patent/CN205014219U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519864A (en) * | 2018-11-28 | 2019-03-26 | 安徽康沃车灯科技有限公司 | A kind of reflective half cup of vehicle front lighting headlight system |
| CN109539167A (en) * | 2018-11-28 | 2019-03-29 | 安徽康沃车灯科技有限公司 | A kind of vehicle front lighting headlight system |
| CN109539167B (en) * | 2018-11-28 | 2024-02-09 | 赵立顶 | Automobile headlamp system |
| CN109519864B (en) * | 2018-11-28 | 2024-02-09 | 赵立顶 | Reflective half cup for automobile headlamp system |
| CN114263891A (en) * | 2020-09-16 | 2022-04-01 | 常州星宇车灯股份有限公司 | Method for designing hyperboloid collimating lens for car lamp |
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