CN202931612U - Light-adjusting LED illuminating lamp - Google Patents
Light-adjusting LED illuminating lamp Download PDFInfo
- Publication number
- CN202931612U CN202931612U CN 201220521438 CN201220521438U CN202931612U CN 202931612 U CN202931612 U CN 202931612U CN 201220521438 CN201220521438 CN 201220521438 CN 201220521438 U CN201220521438 U CN 201220521438U CN 202931612 U CN202931612 U CN 202931612U
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- led
- illuminating lamp
- current driving
- led illuminating
- constant
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Abstract
The utility model discloses a light-adjusting LED illuminating lamp, which comprises a LED luminaire and a constant current driving power, a PWM generator is connected between the LED luminaire and the constant current driving power, and a potentiometer with an adjusting knob is connected to the PWM generator. The light-adjusting LED illuminating lamp has the advantages that the adjusting is smooth, and the LED is always in a constant current driving state.
Description
Technical field
The utility model belongs to the lighting technical field, relates to the LED illuminating lamp, relates in particular to dimming LED illuminating lamp.
Background technology
As a kind of green, hommization, energy-conserving and environment-protective lighting system, the LED illumination is applied in every field more and more.At present, existing LED illuminating lamp scarcely can carry out brightness regulation, but need to carry out according to environment the adjusting of LED lighting brightness in a lot of illumination occasions.
Afterwards, someone adopted controllable silicon to carry out the adjusting of LED lighting brightness.But the result of controllable silicon light modulation makes the LED operating current constantly change.And we know, the color rendering of LED is closely related with the electric current that passes through, curent change, its color rendering and illumination all can change.The regulation and control of adopting controllable silicon to carry out the LED illuminating lamp are extremely unaccommodated.
The utility model content
For this reason, technical problem to be solved in the utility model is to provide a kind of dimming LED illuminating lamp, and this dimming LED illuminating lamp can not change the constant current operating state of LED illuminating lamp when light modulation, have good color rendering.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of dimming LED illuminating lamp, it includes LED light fixture and constant-current driving power supply, it is characterized in that: be connected with PWM generator between described LED light fixture and constant-current driving power supply, described PWM generator also is connected with the potentiometer with adjusting knob.
In preferred implementation of the present utility model, it is how right that described LED light fixture and constant-current driving power supply have.
Adopt technique scheme, this practicality utilizes PWM generator, by regulating the break-make duty ratio of the square wave under constant frequency, namely changes opening and the level and smooth light modulation of turn-offing to realize LED of under constant-current source state LED.Be in the constant current driving condition because whole light modulation process has guaranteed LED all the time, so the illumination color rendering of LED can not reduce.And, the utlity model has light modulation smoothly and guarantee that LED is in the advantage of constant current driving condition all the time.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
Fig. 1 is device connection diagram of the present utility model;
In figure:
The 100-main switch, 200-PWM generator, 300-potentiometer, 310-adjusting knob, 400-constant-current driving power supply, 500-LED light fixture.
Embodiment
As shown in Figure 1, dimming LED illuminating lamp of the present utility model, it includes main switch 100, PWM generator 200, the potentiometer 300 with adjusting knob 310, a plurality of constant-current driving power supply 400 and a plurality of LED light fixture 500.
Wherein, the corresponding constant-current driving power supply 400 of each light fixture 500, PWM generator 200 is connected between light fixture 500 and constant-current driving power supply 400, and wherein PWM generator 200 also connects potentiometer 300, has adjusting knob on this potentiometer 300.
Working method of the present utility model is as follows, by the adjusting knob 310 on rotational potentiometer 300 and then regulate the width of the pulse signal that PWM generator 300 sends, namely regulate the break-make duty ratio of the square wave under constant frequency, namely change opening and the level and smooth light modulation of turn-offing to realize LED of under constant-current source state LED.Due in whole light modulation process, flow through that the electric current of LED is constant all the time not to change, so the color rendering of LED illumination can not make a difference yet.
Therefore, the utility model has light modulation smoothly and guarantees that LED is in the advantage of constant current driving condition all the time.
Claims (2)
1. dimming LED illuminating lamp, it includes LED light fixture and constant-current driving power supply, it is characterized in that: be connected with PWM generator between described LED light fixture and constant-current driving power supply, described PWM generator also is connected with the potentiometer with adjusting knob.
2. dimming LED illuminating lamp according to claim 1, it is characterized in that: it is how right that described LED light fixture and constant-current driving power supply have.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521438 CN202931612U (en) | 2012-10-12 | 2012-10-12 | Light-adjusting LED illuminating lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521438 CN202931612U (en) | 2012-10-12 | 2012-10-12 | Light-adjusting LED illuminating lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931612U true CN202931612U (en) | 2013-05-08 |
Family
ID=48221515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220521438 Expired - Fee Related CN202931612U (en) | 2012-10-12 | 2012-10-12 | Light-adjusting LED illuminating lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101584A (en) * | 2015-09-22 | 2015-11-25 | 南车株洲电力机车有限公司 | Lighting control system |
-
2012
- 2012-10-12 CN CN 201220521438 patent/CN202931612U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101584A (en) * | 2015-09-22 | 2015-11-25 | 南车株洲电力机车有限公司 | Lighting control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20131012 |