CN201114889Y - Bright-dark shading lamp - Google Patents
Bright-dark shading lamp Download PDFInfo
- Publication number
- CN201114889Y CN201114889Y CNU2007200737121U CN200720073712U CN201114889Y CN 201114889 Y CN201114889 Y CN 201114889Y CN U2007200737121 U CNU2007200737121 U CN U2007200737121U CN 200720073712 U CN200720073712 U CN 200720073712U CN 201114889 Y CN201114889 Y CN 201114889Y
- Authority
- CN
- China
- Prior art keywords
- lamp
- bright
- triode
- state
- light
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a lamp that can light up and fade out gradually, comprising an electric bridge composed of four diodes, a capacitance, two triodes, three resistors and a light. The lamp of the utility model takes advantage of the function of the capacitance that the capacitance is charged after a switch is connected and the electrical energy is discharged after the switch is cut off, so as to ensure the triodes to respectively realize the processes from off-state to amplified state and to saturated state finally and then from the saturated state to the amplified state and to the off-state finally, thereby leading that the paralleled lights can realize the effect of lighting up and fading out gradually, thus protecting eyes from being damaged as well as prolonging the service life of the lamp and enhancing the safety of the lamp.
Description
Technical field
The utility model relates to a kind of lighting device, relates to a kind of gradually bright-dark lamp of dark effect that gets brighter that has when open and close particularly.
Background technology
In today that the bedroom light fixture emerges in an endless stream, businessman can obtain more comfortable soft light in order to make the user, numerous and confused " soft light ", " the comfortable lamp " released.Soft light still be common fluorescent lamp, incandescent lamp all be to press the instantaneous high-high brightness that reaches of switch, instantaneous extinguishing during cut-off switch.In the household bedroom these are promptly opened promptly bright, and promptly closing the lamp that promptly goes out has following outstanding shortcoming:
1, opens light fixture at every turn, powerful rush of current light fixture is all arranged repeatedly, in the useful life of impairment light fixture, reduce its fail safe.
Though 2, low-light level light fixture such as soft light can reduce the stimulation of light to glasses, its brightness is not high, diminishes human eyesight; Though common fluorescent lamp etc. then brightness are pure, the moment of turning on light is very dazzling, and is unfavorable to human eye health.
3, light fixture extinguishes immediately, can make human eye be difficult to adapt to precipitate dark surrounds, even cause dizzy.
Address the above problem, can in the light fixture of normal domestic use bedroom, insert a delay circuit, make light fixture shinny at leisure, extinguish at leisure.
Summary of the invention
The utility model realizes by electric capacity in the parallel connection of light fixture two ends that light fixture is gradually bright and subtracts dark effect, thus avoid promptly opening promptly bright, promptly close and promptly go out the injury of human eye, make light fixture more meet the requirement of hommization.Simultaneously, the gradually bright concealed light that subtracts can also avoid repeatedly switch to cause powerful electric current to the damage that light fixture impacts, and has longer life-span and fail safe with respect to general light fixture.
Main body circuit of the present utility model comprises the electric bridge that 4 diodes are formed, 1 electric capacity, and 2 triodes, 3 resistance and 1 lamp is characterized in that and the capacitor C of lamp E parallel connection connected resistance R 1 and switch S.
In the utility model, the electric bridge that links to each other with power supply is made up of 4 diode VD1～VD4.
In the utility model, the base stage of described triode VT1 connects resistance R 2, and collector electrode connects resistance R 3, and emitter connects the base stage of triode VT2.
In the utility model, the collector electrode of described triode VT2 connects lamp E, and emitter connects capacitor C, and base stage connects the emitter of triode VT1.
In the utility model, described triode VT2 is the high-power NPN triode of high back-pressure.
In the utility model, electric bridge plays alternating current is converted to galvanic effect; Electric capacity plays storage, discharges electric energy, make the electric current time-delay by or time-delay stop effect by bulb; Triode control a certain size electric current by the time circuit by and the conducting situation.
Description of drawings
Fig. 1 is bright-dark circuit for lamp figure.
Embodiment
The utility model will be specified in conjunction with the accompanying drawings by preferred embodiment.
This bright-dark lamp is connected on the family expenses 220V power supply at ordinary times.
S is in open mode when beginning, and triode VT1, VT2 all are in cut-off state, and electric light E does not work.
In the time of need turning on light, the S that closes a switch, 220V alternating current by switch S, resistance R, to the capacitor C charging, rise the C both end voltage via VD1～VD4 rectification output ripple direct current gradually.VT1 can obtain ascending base stage bias current by R2, and VT1, VT2 progress into magnifying state by cut-off state, enter complete conducting state at last, and in this process, electric light E is stabilized in the brightest state at last by secretly brightening gradually.
When turning off the light, open S, then the C store charge will still can be kept VT1, VT2 conducting by R2 to the discharge of VT1 emitter.Along with discharge is constantly carried out, discharging current is more and more little, and VT1, VT2 just withdraw from saturated, transfer the amplification attitude to, enter cut-off state at last, and the brightness of electric light E is just by bright deepening gradually, until extinguishing at last like this.Gradually secretly, the gradually bright time is determined by the numerical value of R2, R1 and C respectively.VT2 should adopt the high-power NPN triode of high back-pressure, and other components and parts do not have specific (special) requirements.
Through Fig. 1 processing of circuit, when the user opens switch, bedroom bright-dark lamp just can be by secretly lighting gradually, afterwards always with high-high brightness work, and the process of strengthening for user's a adaptation of eyes light gradually.When user's off switch, the bright-dark lamp adapts to the process that light weakens gradually for one of eyes of user just by bright deepening gradually.
Claims (5)
1, a kind of bright-dark lamp comprises 1 electric bridge, 1 electric capacity, and 2 triodes, 3 resistance and 1 lamp is characterized in that and the capacitor C of lamp E parallel connection connected resistance R 1 and switch S.
2, bright-dark lamp according to claim 1 is characterized in that the electric bridge that links to each other with power supply is made up of 4 diode VD1～VD4.
3, bright-dark lamp according to claim 1 is characterized in that the base stage of triode VT1 connects resistance R 2, and collector electrode connects resistance R 3, and emitter connects the base stage of triode VT2.
4, bright-dark lamp according to claim 1 is characterized in that the collector electrode of triode VT2 connects lamp E, and emitter connects capacitor C, and base stage connects the emitter of triode VT1.
5, bright-dark lamp according to claim 1 is characterized in that triode VT2 is the high-power NPN triode of high back-pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200737121U CN201114889Y (en) | 2007-08-16 | 2007-08-16 | Bright-dark shading lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200737121U CN201114889Y (en) | 2007-08-16 | 2007-08-16 | Bright-dark shading lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114889Y true CN201114889Y (en) | 2008-09-10 |
Family
ID=39966640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200737121U Expired - Fee Related CN201114889Y (en) | 2007-08-16 | 2007-08-16 | Bright-dark shading lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114889Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208747A (en) * | 2015-10-27 | 2015-12-30 | 广西职业技术学院 | Control device for delayed light turning off |
| CN107182154A (en) * | 2017-04-01 | 2017-09-19 | 李欣 | Delay and the head of a bed illuminator of brightness increment |
-
2007
- 2007-08-16 CN CNU2007200737121U patent/CN201114889Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208747A (en) * | 2015-10-27 | 2015-12-30 | 广西职业技术学院 | Control device for delayed light turning off |
| CN107182154A (en) * | 2017-04-01 | 2017-09-19 | 李欣 | Delay and the head of a bed illuminator of brightness increment |
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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 |