CN201302101Y

CN201302101Y - LED projection light

Info

Publication number: CN201302101Y
Application number: CNU2008201430187U
Authority: CN
Inventors: 牛萍娟; 罗静; 高志刚
Original assignee: TIANJIN POLYTECHNIC HIYU SEMICONDUCTOR LIGHTING CO Ltd
Current assignee: TIANJIN POLYTECHNIC HIYU SEMICONDUCTOR LIGHTING CO Ltd
Priority date: 2008-11-12
Filing date: 2008-11-12
Publication date: 2009-09-02
Anticipated expiration: 2018-11-12

Abstract

The utility model belongs to the technical field of illuminating lamps, and particularly relates to an LED projection light which comprises a frame, an LED, one or two or more reflectors, wherein, the cup body of each reflector is tapered or paraboloid-shaped; a hole is formed at the bottom of each reflector; a single LED is fixed below the hole and is in a position near the hole; and the size of the hole is matched with that of the LED. The projection light is characterized in that the inner surface of the cup body comprises a plurality of reflecting curved surface protruding outwards; the reflecting curved surface are arrayed in a radial layered type from bottom to top; each layer of the reflecting curved surface is an arc-shaped curved surface which is wider at the top and narrower at the bottom; and each layer of the arc-shaped curved surface has a different curvature according to the requirements of the light emitting angle ranging from 30 DEG to 120 DEG. The utility model has the advantages of small light energy loss; high reflecting efficiency; controllable direction of the reflection rays, and high utilization rate of the light efficiency of a light source.

Description

A kind of LED Projecting Lamp

Technical field

The utility model belongs to field of semiconductor illumination, in particular to a kind of semiconductor LED Projecting Lamp.

Background technology

Late nineteen nineties in last century, breakthrough along with third generation semiconductor material with wide forbidden band GaN, performance indications such as the luminous efficiency of LED, service life have all obtained significantly improving, production cost descends rapidly, and LED has obtained in the fields such as indicator lamp, big screen display screen, signal lamp and LCD screen backlight of various electronic equipments using widely.At present, along with LED further develops, led light source has begun to be applied to fields such as auto lamp, special lighting light fixture, public illumination, and huge development potentiality is arranged, and is considered to the light source of tool development prospect of 21 century.

At present, mainly the property development of the large power white light LED of using towards throwing light on is very rapid, and the luminous efficiency of the white light LEDs of common commercialization in 2006 can reach 50lm/W, and the luminous efficiency of the product in the laboratory has surpassed 100lm/W; The high-power integrated technology of white light LEDs has also been obtained a lot of achievements simultaneously, and the great power LED of 5W, 10W begins to be applied on market.

General great power LED lighting angle is bigger, and the light efficiency utilization rate is very low in specified scope.Present stage LED reflector is that single LEDs is joined lens and reached optical effect or utilize independent light face reflector to design basically, and this design distribution of light is inhomogeneous, and inevitably causes the waste of luminous flux.

Utilizing high power LED is as the Projecting Lamp light source, has characteristics such as energy-efficient, environmental protection, long-life, therefore has huge development prospect.But high-power LED light source belongs to lambert's light, and the light angle of divergence generally between 90 degree～170 degree, is directly used the occasion in directional lighting, and its light utilization ratio is lower, and inhomogeneous, therefore will carry out optical design to Projecting Lamp.

Existing area floodlighting adopts the design of single cup symmetry distribution curve flux mostly with the reflector of light fixture, circular configuration is adopted in cup body bottom, when many combinations of this kind reflector are used for area floodlighting, the light shape that the light that light source sent reflects away via reflector all is circular, it has ghost image between any two, exist, the light efficiency utilization ratio is low, effective area is little, light problem pockety.

The utility model content

The utility model provides a kind of light energy loss little at the above-mentioned deficiency of prior art, reflector efficiency height, the uniform LED Projecting Lamp of light projector.For this reason, the utility model adopts following technical scheme:

A kind of LED Projecting Lamp, by framework, LED, one or two and two above reflectors combine, the cup of each reflector is taper or paraboloidal, the bottom is offered porose, fixed-site near the hole below the hole has single LEDs, the size in hole matches with the size of single LEDs, it is characterized in that, the inner surface of described cup, make progress from the bottom, be made of the reflective surface of a plurality of outside protrusions that are radial storied placement, the reflective surface of each layer is an arc curve wide at the top and narrow at the bottom, according to 30 °～120 ° rising angle area requirements, each layer arc curve has different curvature.

As preferred implementation, above-mentioned LED Projecting Lamp is positioned at the reflective surface with one deck, and curvature is identical, and the closer to the reflective surface of bottom of cup, curvature is big more; The beam angle of described reflector is between-35 ° to+35 °.

The LED light projector cup that combines by a plurality of light projector cups that the utility model provides, the light that LED is sent, a part of direct light directly utilizes, and all the other obtain utilizing through orienting reflexes.Light shape can reach the requirement of light fixture function of use by the parameter adjustment of reflector.It is little to have the light energy loss, the reflector efficiency height, and reflective radiation direction can be controlled, the advantage that the luminous efficiency of source utilization rate is high.

Description of drawings

The overall structure figure of Fig. 1 Projecting Lamp of the present utility model.

The light principle of reflection figure of Fig. 2 light projector cup of the present utility model.

Description of reference numerals:

1 framework, 2 reflectors, 3 reflective surface 4LED

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further

Referring to Fig. 1 and Fig. 2, LED light projector cup of the present utility model is made of framework 1, a plurality of independent LED reflector 2 that is fixed on the framework, and each reflector is intervally arranged, and can make up different shapes such as square, rectangle, circle, polygon.Such optical design both can make the led light source power ascension, and the heat that led light source is sent is evenly spaced apart, was beneficial to the led light source heat radiation, avoided single multi-chip LED light source heat concentration problem, was beneficial to very much the control of light distribution effect simultaneously.

The cup of each reflector 2 is taper or paraboloidal, and the bottom has an aperture to be used to install led light source 4.Whole tapered, the paraboloidal of cup, inner surface at cup, make progress from the bottom, reflective surface 3 by a plurality of outside protrusions that are radial storied placement constitutes, the reflective surface 3 of each layer is arc curve wide at the top and narrow at the bottom, according to 30 °～120 ° rising angle requirements, each layer arc curve has different curvature.Be positioned at the reflective surface with one deck, curvature is identical, and the closer to the reflective surface of bottom of cup, curvature is big more.For improving reflectivity, on each reflective surface of cup inner surface, be coated with and be coated with reflectorized material.

The light that led light source sends is two-sided 170 ° of lambert's light, and its 50% light intensity angle is 90 °-170 °.The light direct irradiation that LED sends in reflector rising angle scope is gone out, and remaining light is radiated on the reflective surface, shines out through behind each decorative pattern orienting reflex.This kind optical texture has very high utilance.Rising angle of the present utility model is preferably between 5 ° to 75 °.In the present embodiment, the rising angle of direct projection part is 67 °.

Claims

1. LED Projecting Lamp, by framework, LED, one or two and two above reflectors combine, the cup of each reflector is taper or paraboloidal, the bottom is offered porose, fixed-site near the hole below the hole has single LEDs, the size in hole matches with the size of single LEDs, it is characterized in that, the inner surface of described cup, make progress from the bottom, be made of the reflective surface of a plurality of outside protrusions that are radial storied placement, the reflective surface of each layer is an arc curve wide at the top and narrow at the bottom, according to 30 °～120 ° rising angle area requirements, each layer arc curve has different curvature.

2. LED Projecting Lamp according to claim 1 is characterized in that, is positioned at the reflective surface with one deck, and curvature is identical, and the closer to the reflective surface of bottom of cup, curvature is big more.

3. LED Projecting Lamp according to claim 1 is characterized in that, the beam angle of described cup is between-35 ° to+35 °.