CN200959683Y - LED planar illuminating light - Google Patents
LED planar illuminating light Download PDFInfo
- Publication number
- CN200959683Y CN200959683Y CN200620108436.3U CN200620108436U CN200959683Y CN 200959683 Y CN200959683 Y CN 200959683Y CN 200620108436 U CN200620108436 U CN 200620108436U CN 200959683 Y CN200959683 Y CN 200959683Y
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- CN
- China
- Prior art keywords
- control circuit
- led
- constant
- current control
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a LED lighting plate lamp, which includes an aluminium alloy mounting panel, a light source and a control circuit, the control circuit includes a bridge rectifier circuits, a DC/DC constant voltage control circuit and several constant current control circuit parallel connected with the output terminal of the DC/DC constant voltage control circuit, the light source is a LED group composed of several LED, each three LED is series connection and is controlled by an independent constant current control circuit. The utility model has each three LED in Series controlled by an independent constant current control circuit, so the LED can have stable luminescence and the best lighting effect can be reached; the aluminium alloy panel of large area is used to install and fix the LED group, the effect of installation and fixation, as well as heat dissipation can be realized, thereby the lamp has a better heat dissipation effect and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of lighting device, refers in particular to a kind of LED lighting of realizing illumination functions with great power LED.
Background technology
Traditional lighting generally adopts electric light source, and its shortcoming is that power consumption is big, luminous efficiency is lower, and energy waste is serious.Because LED power consumption is low, luminous efficiency is high and volume is little, has now engendered the light fixture of a kind of LED of employing as light source.But, therefore adopt a plurality of LED combinations aborning to realize high-power illumination because single led volume is little, luminous intensity is little.Usually by same constant-current control circuit control, its control poor effect so that illumination effect are bad in a plurality of LED combinations, and because a plurality of LED combine, are difficult for heat radiation, thereby influence lamp life.
Summary of the invention
The utility model provide a kind of LED luminous stable, illuminating effect is better, the LED of LED long service life illumination flat lamp.
A kind of LED illumination flat lamp, comprise mounting panel, light source and control circuit thereof, described control circuit contains the constant-current control circuit of a bridge rectifier, a DC/DC constant-voltage control circuit and several DC/DC of access constant-voltage control circuit outputs in parallel, described light source is the LED group who is made of several LED, wherein per three LED series connection is by an independently constant-current control circuit control.
Described DC/DC constant-voltage control circuit is made of DC/DC power module external transformer, inductance, optocoupler, diode, electric capacity.
Described constant-current control circuit is made of the external inductor of DC/DC transducer, resistance, electric capacity.
Described mounting panel is an aluminium alloy panel.
Described mounting panel two ends are provided with mounting fixing parts.
The utility model by an independently constant-current control circuit control, makes LED luminous stable per three LED series connection, and it is best that illuminating effect reaches; And adopt large-area aluminium alloy panel to be used to install and fix LED group, both played the effect that installs and fixes, also reached the effect of heat radiation, make that the light fixture radiating effect is better, thereby prolonged the useful life of light fixture.
Description of drawings
Fig. 1 is a planar structure schematic diagram of the present utility model;
Fig. 2 is the circuit diagram of the utility model constant-voltage control circuit;
Fig. 3 is the circuit diagram of the utility model constant-current control circuit.
Embodiment
As shown in Figure 1, a kind of LED illumination flat lamp, comprise aluminium alloy mounting panel 1, light source and control circuit thereof, control circuit contains the constant-current control circuit of a bridge rectifier, a DC/DC constant-voltage control circuit and several DC/DC of access constant-voltage control circuit outputs in parallel, light source is the LED group who is made of several LED2, wherein per three LED series connection is by an independently constant-current control circuit control.
The mounting panel two ends are provided with mounting fixing parts 3, can be directly fixed on ceiling or the wall easy installation and removal by modes such as screws.
As shown in Figure 2, the DC/DC constant-voltage control circuit is by DC/DC power module N1 external transformer T2, diode D1, D2, and inductance L 2, capacitor C 1, C2, C3, and the optocoupler N2 in the feedback circuit, voltage-stabiliser tube N3 and resistance capacitance are formed.DC/DC power module N1 adopts TOP224.
As shown in Figure 3, constant-current control circuit is by the external inductance L 3 of DC/DC transducer N4, and voltage-stabiliser tube D6 and resistance capacitance are formed.DC/DC transducer N4 adopts PT4105.The size of electric current is imported PT4105 by resistance sampling, carries out current limliting by PT4105.
Electric current on the LED1-LED3 is regulated the electric current that resistance just can be regulated LED by resistance R 8, R9 decision, makes LED be operated in optimum state.
Claims (5)
1. LED illumination flat lamp, comprise mounting panel (1), light source and control circuit thereof, it is characterized in that: described control circuit contains the constant-current control circuit of a bridge rectifier, a DC/DC constant-voltage control circuit and several DC/DC of access constant-voltage control circuit outputs in parallel, described light source is the LED group who is made of several LED (2), wherein per three LED series connection is by an independently constant-current control circuit control.
2. LED illumination flat lamp as claimed in claim 1, it is characterized in that: described DC/DC constant-voltage control circuit is made of DC/DC power module external transformer, inductance, optocoupler, diode, electric capacity.
3. LED illumination flat lamp as claimed in claim 1, it is characterized in that: described constant-current control circuit is made of the external inductor of DC/DC transducer, resistance, electric capacity.
4. LED illumination flat lamp as claimed in claim 1, it is characterized in that: described mounting panel is an aluminium alloy panel.
5. LED illumination flat lamp as claimed in claim 1, it is characterized in that: described mounting panel two ends are provided with mounting fixing parts (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620108436.3U CN200959683Y (en) | 2006-09-30 | 2006-09-30 | LED planar illuminating light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620108436.3U CN200959683Y (en) | 2006-09-30 | 2006-09-30 | LED planar illuminating light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200959683Y true CN200959683Y (en) | 2007-10-10 |
Family
ID=38786562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620108436.3U Expired - Fee Related CN200959683Y (en) | 2006-09-30 | 2006-09-30 | LED planar illuminating light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200959683Y (en) |
-
2006
- 2006-09-30 CN CN200620108436.3U patent/CN200959683Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |