CN202949590U - Time-delay gradually-brightening lamp with protection function - Google Patents
Time-delay gradually-brightening lamp with protection function Download PDFInfo
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- CN202949590U CN202949590U CN 201220468930 CN201220468930U CN202949590U CN 202949590 U CN202949590 U CN 202949590U CN 201220468930 CN201220468930 CN 201220468930 CN 201220468930 U CN201220468930 U CN 201220468930U CN 202949590 U CN202949590 U CN 202949590U
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Abstract
The utility model discloses a time-delay gradually-brightening lamp with a protection function. The time-delay gradually-brightening lamp comprises a lamp, a silicon controlled rectifier, a bidirectional silicon controlled rectifier, a diode, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a voltage-stabilizing tube, a switch, and a rectifying circuit. A charging circuit composed of the first resistor and the first capacitor and having a time constant ranging from 10 seconds to 20 seconds makes the current of the second capacitor through the second resistor increase with the voltage boost on the second capacitor. Then the lamp is gradually brightened. The illumination lamp provided by the utility model is turned on in a gradually-brightening way and turned off in a gradually-darkening way. The impact current of a cold filament is then limited. The lamp is thus protected and prevented from being burnt. The service lifetime of the lamp is prolonged. Furthermore, the lamp improves the adaptation of human eyes to a blaze and prevents human eyes from being injured by the blaze.
Description
Technical field
The utility model relates to a kind of electronic lighting device, relates in particular to gradually bright light of a kind of time-delay with defencive function.
Background technology
Illuminating lamp of the prior art is all directly open or close, high-power bulb particularly, resistance is low, before turning on light, the cold conditions resistance is lower, and the filament starting current is very large, start and just might cause the phenomenon that burns out bulb suddenly, reduced the useful life of bulb, and human eye also can be inadaptable to unexpected high light, also can cause the possibility of stabbing eyes.
Summary of the invention
The purpose of this utility model just is to provide in order to address the above problem gradually bright light of a kind of time-delay with defencive function.
The utility model is achieved through the following technical solutions above-mentioned purpose:
the utility model comprises bulb, controllable silicon, bidirectional triode thyristor, diode, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, voltage-stabiliser tube, switch and rectification circuit, the two ends of the input of described rectification circuit are connected with the two ends of AC power respectively, described rectification circuit output end anodal simultaneously with the first end of described switch be connected the first end of bulb and be connected, the cathode output end while of described rectification circuit and the first end of described the first electric capacity, the first end of described the second electric capacity be connected the silicon controlled negative pole and connect, the second end of described switch is connected with the first end of described the first resistance, the second end of described the first resistance simultaneously with the first end of described the second resistance be connected the negative pole of voltage-stabiliser tube and be connected, the positive pole of described voltage-stabiliser tube is connected with the second end of described the first electric capacity, the second end while of described the second resistance and the second end of described the second electric capacity, the first end of described the 3rd resistance be connected the first end of the first resistance and connect, the second end of described the first resistance is connected with the positive pole of described diode, the negative pole of described diode simultaneously with the second end of described bulb be connected that silicon controlled is anodal to be connected, described silicon controlled control end is connected with the first end of described bidirectional triode thyristor, the second end of described bidirectional triode thyristor is connected with the second end of described the 3rd resistance.
The beneficial effects of the utility model are:
The utility model illuminating lamp adopts gradually bright startup gradually secretly to close, and can limit the impulse current of cold filament, can protect bulb like this, avoids bulb to be burned, and extends its useful life, has also improved the adaptation that human eye is lost high light, has avoided causing the possibility of stabbing eyes.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1: the utility model comprises bulb EL, controllable silicon SR, bidirectional triode thyristor CR, diode VD, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first capacitor C 1, the second capacitor C 2, voltage-stabiliser tube DW, K switch and rectification circuit DR, the two ends of the input of rectification circuit DR are connected with the two ends of AC power respectively, rectification circuit DR output anodal simultaneously and the first end of K switch be connected first end with bulb EL and be connected, the cathode output end while of rectification circuit DR and the first end of the first capacitor C 1, the first end of the second capacitor C 2 is connected negative pole and is connected with controllable silicon SR, the second end of K switch is connected with the first end of the first resistance R 1, the second end of the first resistance R 1 simultaneously and the first end of the second resistance R 2 be connected negative pole with voltage-stabiliser tube DW and be connected, the positive pole of voltage-stabiliser tube DW is connected with the second end of the first capacitor C 1, the second end while of the second resistance R 2 and the second end of the second capacitor C 2, the first end of the 3rd resistance R 3 be connected the first end of resistance R 1 and connect, the second end of the first resistance R 1 is connected with the positive pole of diode VD, the negative pole of diode VD simultaneously and the second end of bulb EL be connected positive pole with controllable silicon SR and be connected, the control end of controllable silicon SR is connected with the first end of bidirectional triode thyristor CR, the second end of bidirectional triode thyristor CR is connected with the second end of the 3rd resistance R 3.
As shown in Figure 1: the right-hand part of circuit is comprised of bidirectional diode CR, the 3rd resistance R 3, the second resistance R 2, the second capacitor C 2 and the first resistance R 1.When the second capacitor C 2 charging voltages reached the trigger voltage 35V of bidirectional diode CR, bidirectional diode CR punctured the generation trigger impulse, made controllable silicon SR conducting, and bulb EL has electric current to pass through.This part circuit is typical thyristor regulating volt circuit.The time constant that is comprised of the first resistance R 1 and the first capacitor C 1 is that the charging circuit of 10～20s makes by the second capacitor C 2 electric current by the second resistance R 2 rise with the voltage on the second capacitor C 2 to increase, thereby the time that makes the second capacitor C 2 reach the trigger voltage of bidirectional diode CR will reduce to 1ms gradually from 8ms, make the voltage turn-on angle by bulb EL increase to gradually 165 by 30, the about 10s of this process, bulb EL lights in this process gradually.The value of the second capacitor C 2 is larger, and time of delay is longer, and when the 4th resistance R 4 and diode VD ensured that the second capacitor C 2 discharges into 2V when controllable silicon SR conducting, controllable silicon SR voltage zero-cross closes had no progeny, and the second capacitor C 2 restarts charging.The effect of voltage-stabiliser tube DW is to ensure that the voltage-stabiliser tube cathode voltage does not charge to the first capacitor C 1 lower than 30V the time, begins to avoid bulb EL the waits for too long of switching on.After disconnecting power switch K, give the second capacitor C 2 chargings by the first capacitor C 1 by the second resistance R 2, make the controllable silicon SR can also conducting, decline gradually along with the first capacitor C 1 voltage, the controllable silicon SR angle of flow reduces gradually, and bulb EL brightness is thereupon dimmed gradually, until turn-off.
Claims (1)
1. the time-delay with defencive function bright light gradually, it is characterized in that: comprise bulb, controllable silicon, bidirectional triode thyristor, diode, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, voltage-stabiliser tube, switch and rectification circuit, the two ends of the input of described rectification circuit are connected with the two ends of AC power respectively, described rectification circuit output end anodal simultaneously with the first end of described switch be connected the first end of bulb and be connected, the cathode output end while of described rectification circuit and the first end of described the first electric capacity, the first end of described the second electric capacity be connected the silicon controlled negative pole and connect, the second end of described switch is connected with the first end of described the first resistance, the second end of described the first resistance simultaneously with the first end of described the second resistance be connected the negative pole of voltage-stabiliser tube and be connected, the positive pole of described voltage-stabiliser tube is connected with the second end of described the first electric capacity, the second end while of described the second resistance and the second end of described the second electric capacity, the first end of described the 3rd resistance be connected the first end of the first resistance and connect, the second end of described the first resistance is connected with the positive pole of described diode, the negative pole of described diode simultaneously with the second end of described bulb be connected that silicon controlled is anodal to be connected, described silicon controlled control end is connected with the first end of described bidirectional triode thyristor, the second end of described bidirectional triode thyristor is connected with the second end of described the 3rd resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468930 CN202949590U (en) | 2012-09-14 | 2012-09-14 | Time-delay gradually-brightening lamp with protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468930 CN202949590U (en) | 2012-09-14 | 2012-09-14 | Time-delay gradually-brightening lamp with protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949590U true CN202949590U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220468930 Expired - Fee Related CN202949590U (en) | 2012-09-14 | 2012-09-14 | Time-delay gradually-brightening lamp with protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN202949590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174474A (en) * | 2017-11-30 | 2018-06-15 | 上海亚明照明有限公司 | Light-dimming method when LED light during opening and closing with dimming function and its opening and closing |
-
2012
- 2012-09-14 CN CN 201220468930 patent/CN202949590U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174474A (en) * | 2017-11-30 | 2018-06-15 | 上海亚明照明有限公司 | Light-dimming method when LED light during opening and closing with dimming function and its opening and closing |
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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: 20130522 Termination date: 20130914 |