CN2050247U - Sensitive street lamp - Google Patents
Sensitive street lamp Download PDFInfo
- Publication number
- CN2050247U CN2050247U CN 89204575 CN89204575U CN2050247U CN 2050247 U CN2050247 U CN 2050247U CN 89204575 CN89204575 CN 89204575 CN 89204575 U CN89204575 U CN 89204575U CN 2050247 U CN2050247 U CN 2050247U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- bulb
- street lamp
- links
- 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.)
- Withdrawn
Links
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a sensitive street lamp which can automatically switch on and off, comprising a lamp bulb, a control part, a housing and a power plug. The control part comprises a triode, a voltage division resistance and a photosensitive resistance; the voltage division resistance and the photosensitive resistance are respectively connected between the base and the collecting electrode of the triode and between the base and the emitting electrode of the triode. The resistance value of the photosensitive resistance changes when the intensity of the external light changes so as to cause the triode to turn on or cut off. When the triode is turned on, the lamp bulb is light; in reverse, the lamp bulb is lightless.
Description
The utility model design is a kind of along with extraneous light power opens the lighting device that goes out voluntarily.
Transitional street lamps all is that the people is controlled, turn on light and close in set time every day, because the variation of weather, the sunlight intensity difference of every day is bigger, early influence car sails People's Bank of China to darkness when overcast and rainy, turns on light when fine and too early wastes very much electric energy again, therefore the switch voluntarily of necessary realization street lamp, analyze with practical conditions, this is a very important conservation measures.Once there were human photocell and relay to control opening of street lamp in the past and went out, but owing to complex circuit is not used widely with costing an arm and a leg.
The purpose of this utility model is will provide a kind of simple in structure can open the sensitization street lamp that goes out voluntarily according to extraneous light intensity.
The sensitization street lamp that the utility model proposes comprises bulb, control section and shell and attaching plug, and control section is connected between attaching plug and the bulb.Control section comprises a photo resistance, a triode and a divider resistance, photo resistance and divider resistance are connected on respectively between the base stage and emitter and base stage and collector electrode of triode, when photo resistance is subjected to solar radiation, the light resistance resistance is compared very little with divider resistance, transistor base voltage is almost nil.Triode is in cut-off state, and supply voltage is added in bulb, divider resistance and the light resistance series loop, because the divider resistance resistance is very big, so bulb two interpolars have only very small voltage, it can not be luminous.When the illumination that is subjected to when photo resistance weakened, its resistance became greatly gradually, thereby transistor base voltage is raise, triode becomes conducting by ending, resistance is less between triode collecting electrodes and the emitter at this moment, and supply voltage almost is added in bulb side entirely, makes bulb reach high-high brightness.
Below in conjunction with embodiment and accompanying drawing thereof the utility model is described further.
Fig. 1 is the structural representation according to the sensitization street lamp that the utility model proposes, and the loam cake of this sensitization street lamp is opened among the figure.
Fig. 2 is the electrical schematic diagram of street lamp shown in Figure 1.
As shown in Figure 1, this sensitization street lamp comprises bulb 1, control section 2, shell 3 and attaching plug 4, shell 3 comprises housing 31 and loam cake 32 two parts, bulb 1 and control section 2 are installed in the housing 31, and attaching plug 4 is fixed on housing 31 back side (not shown), and a hole 33 is arranged at the bottom of loam cake 32, top 34 be with light transmission preferably plastics make, so that when loam cake closes, the luminous energy that bulb sends shines out by shell, guarantees the safety of bulb simultaneously.
Fig. 2 has showed the electrical schematic diagram of this sensitization street lamp.Dotted line institute frame part among control section 2(Fig. 2) comprises triode T, divider resistance R
1With photo resistance R
X, R
1Be connected between the base stage and collector electrode of triode T R
XBe connected between the base stage and emitter of triode T, the utmost point of bulb L links to each other with transistor collector, and the other end extremely links to each other with one of power supply, and another utmost point of power supply links to each other with transistor emitter.Photo resistance R
XOne photosensitive surface is arranged, and install in the hole 33 on this surface positive alignment loam cake 32.When ambient light is strong, photo resistance R
XResistance is very little, much smaller than divider resistance R
1(R
1Get 1,000,000 Ω), so transistor base voltage is very low, triode T is in cut-off state, and supply voltage is added in R
1, R
XIn the series loop of bulb L, because R
1Very big, this loop current is substantially zero, and bulb L does not work.When the ambient light photograph dies down, R
XIt is big that resistance becomes, and transistor base voltage is raise, and until the triode conducting, present very small resistor between transistor emitter and the collector electrode this moment, thereby supply voltage is added on the bulb L basically entirely, and bulb L is luminous.Above-mentioned analysis is the half period at ac supply signal, when power supply one utmost point that promptly links to each other with bulb is positive pole.The model of bulb L in the present embodiment is 220V-3W.
Claims (1)
1, a kind of sensitization street lamp is made of bulb 1, control section 2, shell 3 and attaching plug 4, and shell 3 comprises light transmission part 34, it is characterized in that, described control section 2 comprises triode T, divider resistance R
1With photo resistance R
x, divider resistance R
1Be connected between the base stage and collector electrode of triode T photo resistance R
xBe connected between the base stage and emitter of triode T, a utmost point of bulb 1 links to each other with the collector electrode of triode T, and another utmost point extremely links to each other with one of attaching plug 4, and another utmost point of attaching plug 4 links to each other with the emitter of triode T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204575 CN2050247U (en) | 1989-04-18 | 1989-04-18 | Sensitive street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204575 CN2050247U (en) | 1989-04-18 | 1989-04-18 | Sensitive street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050247U true CN2050247U (en) | 1989-12-27 |
Family
ID=4861900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89204575 Withdrawn CN2050247U (en) | 1989-04-18 | 1989-04-18 | Sensitive street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7520631B2 (en) | 2001-06-18 | 2009-04-21 | Eveready Battery Company, Inc. | Lighting device |
-
1989
- 1989-04-18 CN CN 89204575 patent/CN2050247U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7520631B2 (en) | 2001-06-18 | 2009-04-21 | Eveready Battery Company, Inc. | Lighting device |
| US8277076B2 (en) | 2001-06-18 | 2012-10-02 | Eveready Battery Company, Inc. | Lighting device |
| US8491152B2 (en) | 2001-06-18 | 2013-07-23 | Eveready Battery Company, Inc. | Lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |