Reflection type LED lamp and a head lamp for vehicles using the reflection type LED lamp

A technology for automobile headlights and LED lights, applied in the field of lighting, can solve the problems of low brightness, small luminous flux of a single LED, large size of LED headlights, etc., so as to improve the utilization rate of light energy, simplify the structure and production cost, The effect of high utilization of light energy

Inactive Publication Date: 2009-11-25
CHINA JILIANG UNIV
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Problems solved by technology

[0005] When using LED light sources to design headlights, the main problem is that the luminous flux of a single LED is small and the brightness is not high.

Method used

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  • Reflection type LED lamp and a head lamp for vehicles using the reflection type LED lamp
  • Reflection type LED lamp and a head lamp for vehicles using the reflection type LED lamp
  • Reflection type LED lamp and a head lamp for vehicles using the reflection type LED lamp

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Embodiment Construction

[0032] See attached Figure 1~4 , the reflective LED lamp of the present invention is a housing with a light port 7 surrounded by a base 4 and a reflective cup 1 located above the base 4. The base 4 has an LED light source, and a light source is provided between the LED light source and the light port 7. Reflector 5 facing the plane of the LED light source.

[0033] The LED light source is composed of 4 light-emitting diodes 6a, 6b, 6c, and 6d whose light-emitting parts are vertically upward. The row of light-emitting diodes (light-emitting diode 6b, light-emitting diode 6d) and the back row of light-emitting diodes (light-emitting diode 6a, light-emitting diode 6c) far away from the reflector 5 of the plane.

[0034]In order to realize dislocation distribution, the distance between the light emitting diodes 6a and 6c in the back row is greater than the distance between the light emitting diodes 6b and 6d in the front row, and the distance between the light emitting diodes 6b...

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Abstract

The invention discloses a reflection type LED lamp and a head lamp for vehicles using the reflection type LED lamp, wherein the reflection type LED lamp comprises a housing with a lamp socket surrounded by a base and a reflection cup positioned above the base, and an LED light source positioned on the base; the reflection cup reflects the light rays of the LED light source out of the lamp socket to form illumination light rays; the reflection face of the reflection cup is composed of a parabolic cylindrical surface at the middle part and a paraboloid positioned at both sides of parabolic cylinder; a reflection mirror facing to the LED light source is installed between the LED light source and the lamp socket; a plane mirror reflects the incident light rays of the LED light source to the reflection face of the reflection cup, and then the light rays are reflected out of the lamp socket by the reflection face. The reflection type LED lamp in the invention shares a reflection cup by using parabolic reflector, plane reflector and a plurality of LEDs according to non-imaging optical theory, thereby realizing the maximization of optical energy utilization rate of unit caliber of LED of reflection cup, improving the illumination of the integral lamp and also reducing the structure size.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a reflective LED lamp and an automobile headlamp using the reflective LED lamp. Background technique [0002] At present, the light sources of automobile headlights mostly use halogen bulbs, such as H4 bulbs. Halogen lamps have a large luminous volume, short life, low utilization rate of light energy, and the distribution of illuminants is not strictly Lambertian, which brings certain errors to the design, and it is difficult to guarantee the design accuracy of the headlights. As a new type of light source, light-emitting diode (LED) has the characteristics of high luminous efficiency, long service life and high reliability. With the continuous maturity of LED technology and the reduction of cost, it has become possible to use LED as a car headlight, so LED is also called the fourth-generation car light source. [0003] There are two mainstream design methods for automotive he...

Claims

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Application Information

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IPC IPC(8): F21S8/10F21V7/09F21V7/10F21W101/10F21Y101/02F21Y115/10
Inventor 余桂英金骥蒋贤满朱旭平
Owner CHINA JILIANG UNIV
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