CN1121646A

CN1121646A - Color freely changeable fully-centralied extra-high photo effect solid photo source

Info

Publication number: CN1121646A
Application number: CN94112278A
Authority: CN
Inventors: 张龙宝
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-26
Filing date: 1994-08-26
Publication date: 1996-05-01
Anticipated expiration: 2014-08-26
Also published as: CN1047691C

Abstract

The characteristic lies in that a circular cylinder tube holder is casted from engineering plastics, the upper part of the tube holder forms a condave-inward parabolic reflector. On two sides of the tube holder, four metallic supporters are casted parallelly. Each supporter has a section of sagging body to form four feet to stretch to the focus position of the reflector, among which one foot is cathode of light emitting diode, the other three are anodes. On the cathode, a hemispherical concave-inward surface is formed, in which three chips of red green and blue three primary coloured light emitting diode are placed. By changing the work current of the diode, the colour of the light source can be changed arbitrarily.

Description

Color freely changeable fully-centralied extra-high photo effect solid photo source

A kind of solid light source of fully-centralied extra-high photo effect that can changing color freely belongs to light emitting semiconductor device.

Existing extra-high photo effect light-emitting diode, its light harvesting method generally is to adopt an optically focused reflection, promptly some light-emitting diode stamen sheets are placed in the concaver of an energy optically focused reflection, reflect and press the direct projection on the printed board plane of dress diode stamen sheet by concaver optically focused, to increase brightness, as Chinese patent 85104012A; United States Patent (USP) 5068771 also just places light harvesting in the taper reflection cavity to a light-emitting diode, and with the increase brightness, but the convergent pencil of rays of above-mentioned patent is all very little, transmitting range is near, light efficiency is low, and it is several that particularly its glow color has only the green orchid of reddish yellow, and the scope of application is restricted.

Task of the present invention is to place in the hemispherical concave surface with three three-color light-emitting diode stamen sheets, hemispherical concave surface is arranged at one greater than the focal position greater than the parabolic reflector of this hemispherical concave surface, implement secondary light reflex, to reach changing color freely fully-centralied extra-high photo effect solid photo source purpose.

The solution of the present invention is to realize like this, with a garden of engineering plastics injection moulding tubbiness base, the top of garden bucket also forms a parabolic reflector that meets parabolic equation, reflector is coated with the reflectance coating coating of total reflection, be injected with four metallic supports in the both sides of garden tubbiness base, every support all has a horizontal arm to stretch to the base center, and there is one section pendant to form the focus place that four pin are stretched in parabolic reflector respectively, one of them pin constitutes the negative electrode of light-emitting diode, its excess-three pin constitutes the anode of light-emitting diode, be provided with a hemispherical concave surface and corresponding in this negative electrode position with parabolic concave surface, the former concave is less than the concave less than the latter, in hemispherical concave surface with the light-emitting diode stamen sheet of three red green blue fundamental colors of conductive silver glue bonding, and be connected with three anodes respectively with spun gold, pour in the whole parabolic cavity with the bright epoxy resin of full impregnated then, adjust the size of each led current, can freely change the color of light source, in order to control the angle of scattering of light source, at parabolic port, by adorning concavees lens; Utilize monomer solid combination of light sources of the present invention to become various solid light source arrays, constitute light battle array signal lamp or panchromatic large screen display.

Advantage of the present invention is that convergent pencil of rays can reach and is bordering on 4 π, and the light efficiency height can transmit at a distance, adjust the size of current of light-emitting diode stamen sheet, can freely change the color of light source, can be used on traffic signals, railway signal, beacon sign, aviation signal and mine illumination lamp etc., volume is little, and is low in energy consumption, anti-seismic performance is good, applied range.

The present invention has following accompanying drawing:

Accompanying drawing 1 is a side view cutaway drawing of the present invention.

Accompanying drawing 2 is vertical views of Fig. 1.

Accompanying drawing 3 is that the A of the hemisphere face 6 among Fig. 1 is to zoomed-in view.

Below in conjunction with accompanying drawing narration embodiments of the invention.

Accompanying drawing 1 is an end view of the present invention, among the figure 3 is garden tubbiness bases that are injection molded into engineering plastics, the parabolic reflector 2 of an indent is formed at the top of garden bucket, reflector 2 is coated with the reflectance coating coating of total reflection, at the both sides of base 3 A, B and C, the D position, be injected with four metallic supports 1 abreast, every support all has a horizontal arm to stretch to the center of base, and there is one section pendant to form the focal point F position that four pin are stretched in parabolic reflector 2 respectively, wherein the pin below the A point support constitutes the negative electrode 4 of light-emitting diode, dug a hemispherical concave surface 6 in the bottom of negative electrode 4, in concave surface 6, be red with three primary colours of conductive silver glue bonding, green, blue light-emitting diode stamen sheet 5, B, C, pin below the D support constitutes the anode 10 of light-emitting diode respectively, 7,8 also are connected with three stamen sheets respectively with spun gold 9, the radius of hemispherical concave surface 6 is less than the radius (usually between 50-100 times) less than parabolic reflector 2, the position of three anodes of light-emitting diode, the position of as far as possible close three stamen sheets, in the parabolic reflector body cavity, fill whole cavity with the bright epoxy resin 12 of full impregnated, in order to control the angle of scattering of light source, at parabolic port, by adorning concavees lens 11; Accompanying drawing 2 is vertical views of Fig. 1, and in A, the B of garden bucket and C, D position, with the metallic support 1 that base 3 is injection-moulded in, entad has negative electrode 4, hemisphere concave surface 6,

anode

7,8,10; Accompanying drawing 3 is that the A of hemisphere face 6 among Fig. 1 is to zoomed-in view, hemisphere face 6 is arranged at the bottom of visible light emitting diode (VLED) negative electrode 4 among the figure, three light-emitting diode stamen sheets 5 are arranged in the concave surface, three anodes 7 of light-emitting diode are arranged in its vicinity, 8,10 also are connected with three stamen sheets 5 respectively with spun gold 9, because the luminous intensity and the operating current of light-emitting diode are bordering on linearity, the operating current of control light-emitting diode, can change the brightness of three light-emitting diode stamen sheets, thereby can freely change the color of light source, as seen from Figure 1, three red, green, the light that blue stamen sheet sends is after hemisphere face 6 primary events, again through the reflection second time of parabolic reflector 2, be equivalent to light harvesting twice, make convergent pencil of rays be bordering on 4 π, parabolic reflector 2 is a total reflection screen, is again a colour mixture screen, both but changing color freely can reach fully-centralied and extra-high photo effect purpose again; The present invention is as railway, navigation, when aviation and traffic lights, available some pieces of monomer solid combination of light sources become the light battle array signal lamp of various combination form, for example be arranged in seven rows with 37 monomer solid light sources, seven of middle rows, subtract one up and down line by line, constitute a kind of light battle array signal lamp, or form farther with more solid light source apart from the light battle array signal lamp that transmits, when the present invention is used as full-color display, according to the size of indicator screen, be arranged in an array with some monomer solid light sources, constitute a kind of solid light source array display screen, control in each monomer solid light source red, green, the operating current size of blue three stamen sheets reaches the colored purpose that shows of jumbotron super brightness.

Claims

1, a kind of fully-centralied extra-high photo effect solid photo source that can changing color freely, it is characterized in that focal point F place at parabolic reflector (2), the hemisphere face (6) of an indent is set, hemisphere face (6) is on light-emitting diodes tube cathode (4), the radius of hemisphere face (6) is less than the radius less than parabolic reflector (2), three of placements are red in hemisphere face (6), green, the stamen sheet (5) of blue Tricolor LED, locating near three light-emitting diode stamen sheets (5), three anodes (7) are set respectively, (8), (10) and with spun gold (9) be connected with three stamen sheets (5), the light that light-emitting diode stamen sheet in hemisphere face (6) sends, secondary reflection through hemisphere face (6) primary event and parabolic reflector (2), port in parabolic reflector (2) is by concavees lens (11) are housed.

2, by the described solid light source of claim 1, it is characterized in that, parabolic reflector (2) is to be injection-moulded on the garden tubbiness base (3) with engineering plastics, reflector is coated with the total reflection metal film on (2), both sides A at base (3), B and C, parallel four metallic supports (1) that are injected with in D position, every metallic support all has a horizontal arm to stretch to paraboloidal center, and there is one section pendant to form the focal point F position that four pin are stretched in parabolic reflector (2), pin below the A point support constitutes the negative electrode (4) of light-emitting diode, lower end in negative electrode (4), dug a hemispherical concave surface (6), B, C, pin below the D support constitutes the anode (10) of light-emitting diode, (7) and (8).

3, color freely changeable fully-centralied extra-high photo effect solid photo source, the feature during as signal lamp or panchromatic display screen is during as signal lamp, according to the distance that transmits signal, to press the various combination form with some pieces of monomer solid light sources and form a light battle array signal lamp; When as panchromatic display screen, according to the size of display screen, be arranged in an array with some pieces of monomer solid light sources, constitute an array solid light source display screen.