CN208128581U - A kind of LED light of brightness gradual change - Google Patents
A kind of LED light of brightness gradual change Download PDFInfo
- Publication number
- CN208128581U CN208128581U CN201820490089.8U CN201820490089U CN208128581U CN 208128581 U CN208128581 U CN 208128581U CN 201820490089 U CN201820490089 U CN 201820490089U CN 208128581 U CN208128581 U CN 208128581U
- Authority
- CN
- China
- Prior art keywords
- light
- led
- diode
- resistance
- capacitor
- 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
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a kind of LED light of brightness gradual change, which obtains cumulative or decrescence control voltage by the charge and discharge to capacitor, then amplifies through two-stage triode, finally drives LED, when making to turn on light, LED luminance is cumulative, and when turning off the light, LED luminance is gradually dark.The LED light of this brightness gradual change is used as night bedside lamp, stimulation of the mutation of light to human eye when avoidable night turns on light, turns off the light.
Description
Technical field
The utility model relates to brightness is cumulative when a kind of turn on light, turn off the light when brightness Novel LED light decrescence, belong to electronics skill
Art field.
Background technique
In actual life, when being turned on or off head of a bed headlamp at night, unexpected light or the unexpected black dull human eye that allows
It feels ill.Utility model patent " a kind of light controller (application number 201520837537.3) to brighten step by step " describes one
Kind of device brightens function step by step the arrangement achieves lamp, but the device only provides two-stage brightness change when turning on light, therefore,
Effect is not good enough.
Utility model content
The utility model provides a kind of LED light of brightness gradual change, by continuous gradation mode, when turning on light, makes LED light
By glimmer to normal brightness transition, when turning off the light, and LED light is made to be transitioned into closing by normal brightness, improve the comfort level of human eye.
The specific technical solution that the utility model is taken is as follows：
A kind of LED light of brightness gradual change, the LED light include triode Q1 and Q2, switch K1, resistance R1~R3, capacitor C1,
Diode D1 and Light-emitting diode LED 1, wherein a termination+6V power supply of switch K1, one end of another terminating resistor R1；Three poles
The other end of the base stage connecting resistance R1 of pipe Q1 and the anode of capacitor C1, collector connect+6V power supply, and emitter connects the base of triode Q2
One end of pole and resistance R2, the other end of resistance R2 and the cathode of capacitor C1 connect the anode of diode D1, the cathode of diode D1
Ground connection；The cathode of the collector sending and receiving optical diode LED1 of diode Q2, one end of emitter connecting resistance R3, light emitting diode
The anode of LED1 connects+6V power supply, the other end ground connection of resistance R3；Light-emitting diode LED 1 uses illuminating LED.
The beneficial effects of the utility model are：The utility model provides a kind of LED light of brightness gradual change, can pass through company
Continuous gradual manner, makes LED light by glimmer to normal brightness transition, or be transitioned into closing by normal brightness.By this brightness gradual change
LED light is used as night bedside lamp, can reduce the night stimulation of light to human eye when turning on light, turning off the light.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in Figure 1, a kind of LED light of brightness gradual change, the LED light include triode Q1 and Q2, switch K1, resistance R1~
R3, capacitor C1, diode D1 and Light-emitting diode LED 1, wherein a termination+6V power supply of switch K1, another terminating resistor R1's
One end；The other end of the base stage connecting resistance R1 of triode Q1 and the anode of capacitor C1, collector connect+6V power supply, and emitter connects three
The base stage of pole pipe Q2 and one end of resistance R2, the other end of resistance R2 and the cathode of capacitor C1 connect the anode of diode D1, two poles
The cathode of pipe D1 is grounded；The cathode of the collector sending and receiving optical diode LED1 of diode Q2, one end of emitter connecting resistance R3, hair
The anode of optical diode LED1 connects+6V power supply, the other end ground connection of resistance R3；Light-emitting diode LED 1 uses illuminating LED.
When switch K1 is connected, power supply charges to capacitor C1 through switch K1, resistance R1, capacitor C1 and diode D1, when
When the both end voltage of capacitor C1 is of about 0.5V, both end voltage is superimposed with the pressure drop of diode D1, starts triode Q1 and Q2
Conducting, Light-emitting diode LED 1 starts bright；As charging continues, the both end voltage of capacitor C1 continues to rise, triode Q1 and three
Pole pipe Q2 conducting is also gradually reinforced, and the brightness of Light-emitting diode LED 1 is also cumulative；As charging carries out, when the both end voltage of capacitor C1
When rising to certain value, the electric current provided through resistance R1 can only meet taking for triode Q1 base current, the charging to capacitor C1
Stop, circuit enters an equalization point, and the switch on intensity of triode Q1 and Q2 remain unchanged, and the brightness of Light-emitting diode LED 1 is not
Rise again.
When switch K1 is disconnected, emitter junction, resistance R2 of the capacitor C1 through triode Q1 discharge, and the discharge current of capacitor C1 drives
Dynamic triode Q1, the driving triode Q2 again after triode Q1 amplification, makes Light-emitting diode LED 1 continue to shine；With the time after
It is continuous, capacitor C1 energy storage decline, capacitor C1 discharge current diminuendo, the conducting diminuendo of triode Q1 and Q2, Light-emitting diode LED 1
Brightness is also gradually dropped；As capacitor C1 constantly discharges, when dead zone voltage of its electric end voltage down to the emitter junction of triode Q1, three
Pole pipe Q1 and Q2 cut-off, Light-emitting diode LED 1 are gone out entirely.
Claims (1)
1. a kind of LED light of brightness gradual change, it is characterized in that：The LED light include triode Q1 and Q2, switch K1, resistance R1~R3,
Capacitor C1, diode D1 and Light-emitting diode LED 1, wherein a termination+6V power supply of switch K1, the one of another terminating resistor R1
End；The other end of the base stage connecting resistance R1 of triode Q1 and the anode of capacitor C1, collector connect+6V power supply, and emitter connects three poles
The base stage of pipe Q2 and one end of resistance R2, the other end of resistance R2 and the cathode of capacitor C1 connect the anode of diode D1, diode
The cathode of D1 is grounded；The cathode of the collector sending and receiving optical diode LED1 of diode Q2, one end of emitter connecting resistance R3 shine
The anode of diode (LED) 1 connects+6V power supply, the other end ground connection of resistance R3；Light-emitting diode LED 1 uses illuminating LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820490089.8U CN208128581U (en) | 2018-04-08 | 2018-04-08 | A kind of LED light of brightness gradual change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820490089.8U CN208128581U (en) | 2018-04-08 | 2018-04-08 | A kind of LED light of brightness gradual change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208128581U true CN208128581U (en) | 2018-11-20 |
Family
ID=64193990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820490089.8U Expired - Fee Related CN208128581U (en) | 2018-04-08 | 2018-04-08 | A kind of LED light of brightness gradual change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208128581U (en) |
-
2018
- 2018-04-08 CN CN201820490089.8U patent/CN208128581U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204810638U (en) | Infrared sensing corridor of solar electric source LED lamp of adjusting luminance | |
| CN101835306B (en) | Led lamp control circuit and led lamp | |
| CN207460546U (en) | A kind of solar LED (Light Emitting Diode) lamp of intelligent control | |
| CN102548084A (en) | Device and method for controlling light source in gradual brightness change manner | |
| CN208128581U (en) | A kind of LED light of brightness gradual change | |
| CN104302036A (en) | Light emitting control circuit | |
| CN202374523U (en) | Light emitting diode (LED) human body induction lamp | |
| CN202085341U (en) | LED lamp capable of adjusting power automatically based on human body induction | |
| CN213694216U (en) | Intelligent human body induction charging glare-free LED lamp | |
| CN212910120U (en) | LED power supply dimming circuit | |
| CN104427686A (en) | Lamp and control circuit thereof | |
| CN205336608U (en) | Light emitting diode (LED) constant -current driving power supply | |
| CN201652133U (en) | Infrared sensor solar energy lawn lamp | |
| CN209710380U (en) | A kind of LED light | |
| CN108882430A (en) | Has the LED lamp of automatic dimming function | |
| CN207305001U (en) | A kind of gradually bright LED lamp circuit | |
| CN207251971U (en) | A kind of gradually bright LED light | |
| CN104284490A (en) | LED drive circuit and refrigerator | |
| CN211982193U (en) | Triode switching constant current circuit controlled by 512 signals for outputting short-circuit protection | |
| CN205071382U (en) | Intelligence emergency light device | |
| CN204180342U (en) | LED drive circuit and refrigerator | |
| CN204305432U (en) | LED car lamp drive circuit | |
| CN204408672U (en) | A kind of automobile automatic light-supplementing illuminator | |
| CN211457431U (en) | Automatic control circuit for solar lamp | |
| CN211457451U (en) | Remote control circuit for solar lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20210408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |