CN201382352Y - Capacitance fire emergency identification lamp - Google Patents
Capacitance fire emergency identification lamp Download PDFInfo
- Publication number
- CN201382352Y CN201382352Y CN200920032507U CN200920032507U CN201382352Y CN 201382352 Y CN201382352 Y CN 201382352Y CN 200920032507 U CN200920032507 U CN 200920032507U CN 200920032507 U CN200920032507 U CN 200920032507U CN 201382352 Y CN201382352 Y CN 201382352Y
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- circuit
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- storage capacitor
- identification lamp
- drive circuit
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Abstract
The utility model relates to a capacitance fire emergency identification lamp, which comprises an input current-limiting and over-voltage protection circuit, a rectifier bridge circuit, a drive circuit and an LED lamp unit. The output end of the input current-limiting and over-voltage protection circuit is connected with the input end of the rectifier bridge circuit; the output end of the LED drive circuit is connected with the input end of the LED lamp unit; the output end of the rectifier bridge circuit is further connected with an energy storage capacitor; and the energy storage capacitor discharges to the LED lamp unit through the LED drive circuit. The emergency identification lamp can be charged in tens of seconds, so that the utility model has the advantages of long service life, simple circuit, low cost and the like.
Description
Technical field
The utility model belongs to the security against fire indicator lamp and makes the field, relates to a kind of fire-fighting emergent identification lamp, especially a kind of condenser type fire-fighting emergent identification lamp.
Background technology
Fire-fighting emergent identification lamp is in breaking out of fire in emergency circumstances, personnel and the material dispersal interior for the building of catching fire provide emergent sign to indicate, as a kind of and closely-related electronic equipment of people's security of the lives and property, it should have high reliability, long-life, safeguard characteristic of simple.But, traditional fire-fighting emergent identification lamp nearly all adopt nickel-cadmium cell or Ni-MH battery (in fact since the price of Ni-MH battery than the price height of nickel-cadmium cell, the fire-fighting emergent identification lamp on the market seldom uses Ni-MH battery) energy storage.But all there is following shortcoming in these two kinds of batteries:
(1) the charging control circuit more complicated of nickel-cadmium cell and Ni-MH battery; must possess service life and performance that additives for overcharge protection circuit and over circuit could guarantee nickel-cadmium cell and Ni-MH battery; cause the entire circuit more complicated of fire-fighting emergent identification lamp, cost is higher.
(2) nickel-cadmium cell and Ni-MH battery are owing to exist memory effect, particularly nickel-cadmium cell, and memory effect is more obvious.If also do not have under the abundant situation of discharging just to battery charge at battery, the capacity of battery is significantly reduced, if want to overcome the memory effect of battery, just must design the discharge examination control circuit, guarantee that battery can fully discharge before charging, but this just makes the circuit of fire-fighting emergent identification lamp more complicated, and cost is higher.Fire-fighting emergent identification lamp does not in the market nearly all design battery discharge and detects control circuit.
(3) charging interval of nickel-cadmium cell and Ni-MH battery reaches tens hours, the charging interval of national Specification fire-fighting emergent identification lamp can not be above 24 hours, if under the state of battery charge, fire-fighting emergent identification lamp changes emergency rating over to, and certain influence can be arranged the crash time of fire-fighting emergent identification lamp.Though quick charge can shorten to several hrs with the charging interval of battery, the quick charge meeting has certain influence to the life-span of battery.Also can increase circuit cost simultaneously.
(4) cadmium in the nickel-cadmium cell is the toxic heavy metal element, and nickel-cadmium cell all can pollute environment in process of production He after scrapping.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of condenser type fire-fighting emergent identification lamp is provided.This emergent identification lamp can be finished charging process in tens seconds, and circuit is simple, performance is good.
The purpose of this utility model solves by the following technical programs:
This condenser type fire-fighting emergent identification lamp; comprise input current limliting and overvoltage crowbar, rectifier circuit, led drive circuit and LED lamp group; the output of described input current limliting and overvoltage crowbar is connected with the input of rectifier circuit; the output of described led drive circuit is connected with the input of LED lamp group; the output of described rectifier circuit is connected with storage capacitor, and described storage capacitor is given the power supply of LED lamp group by led drive circuit.
Above-mentioned storage capacitor (4) is a CD273 type energy-storage capacitor.
The output of above-mentioned rectifier circuit also is parallel with the civil power indicating circuit, and described civil power indicating circuit is composed in series by first resistance and LED light.
Above-mentioned led drive circuit adopts the HV9910 cake core.
The utility model can significantly improve the service life of fire-fighting emergent identification lamp, and has the advantage that circuit is simple, cost is low, is the upgraded product of traditional fire-fighting emergent identification lamp.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
Wherein: 1 is input current limliting and overvoltage crowbar; 2 is rectifier circuit; 3 is the civil power indicating circuit; 4 is storage capacitor; 5 is led drive circuit; 6 is LED lamp group; 7 is LED group.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
As Fig. 1 is circuit diagram of the present utility model; can be divided into six modules according to function; be respectively: input current limliting and overvoltage crowbar 1, rectifier circuit 2, civil power indicating circuit 3, storage capacitor 4, led drive circuit 5 and LED lamp group 6, wherein LED lamp group 6 is made up of LED group 7.Annexation between each module is as follows:
The output of input current limliting and overvoltage crowbar 1 is connected with the input of rectifier circuit 2; the output of rectifier circuit 2 is electrically connected with storage capacitor 4 and civil power indicating circuit 3 respectively; the two ends of storage capacitor 4 are connected with the input of led drive circuit 5, and the output of led drive circuit 5 is connected with the input of LED lamp group 6.
Below each module is described in detail:
(1) input current limliting and overvoltage crowbar 1:
Input current limliting and overvoltage crowbar 1 are by NTC themistor, fuse FUSE and piezo-resistance R
VForm, as Fig. 1, NTC themistor and fuse FUSE series connection are the piezo-resistance R that is connected between both ends of power after fuse FUSE
V, NTC themistor plays metering function, and is excessive in order to prevent the charging current of storage capacitor 4 when charging, R
VPlay the overvoltage protection effect.
(2) rectifier circuit 2:
(3) the civil power indicating circuit 3:
Civil power indicating circuit 3 is composed in series by first resistance R 1 and LED light, and an end of first resistance R 1 is connected with the cathode output end of rectifier bridge, and the negative pole end of LED light is connected with the cathode output end of rectifier bridge.When civil power just often, LED light is luminous.
(4) storage capacitor 4:
Storage capacitor 4 is connected on the output of rectifier circuit 2, wherein the positive pole of storage capacitor 4 not only is connected with the positive pole of rectifier circuit 2 outputs by the 5th diode D5, but also be connected with the end of normally closed switch S1, S1 is the test switch of fire-fighting emergent identification lamp, whether the work that is used for detecting storage capacitor 4 is normal, in the time will testing to fire-fighting emergent identification lamp, press switch S 1, switch S 1 disconnects, storage capacitor begins discharge, and the negative pole of storage capacitor 4 is connected with the negative pole of rectifier circuit 2 outputs.
(5) led drive circuit:
Described led drive circuit 5 is a core with the HV9910 cake core, and the LD of HV9910, VDD are connected the back and are connected with the negative pole (hereinafter referred to as negative pole) of rectifier circuit 2 outputs with the 4th capacitor C 4 by the 3rd capacitor C 3 in parallel with the PMW terminal; The RT terminal is connected with negative pole through second resistance R 2; The GND terminal directly is connected with negative pole; The CS terminal is connected with negative pole with the 3rd resistance R 3 by the 4th capacitor C 4 in parallel, the CS terminal also is connected with the source electrode of metal-oxide-semiconductor Q1, the GATE terminal is connected with the grid of metal-oxide-semiconductor Q1, the drain electrode of metal-oxide-semiconductor Q1 also is connected with the positive pole of the 6th diode D6 and an end of inductance L 1 respectively, the negative pole of the 6th diode D6 not only is connected with the end of Vin terminal and normally closed switch S1, and also the positive pole with LED lamp group 6 is connected.The other end of inductance L 1 is connected with the negative pole of LED lamp group 6.
(6) LED lamp group 6:
LED lamp group 6 is made up of two or more (being illustrated as two) LED group 7 in parallel, and described LED group 7 is composed in series by several LED, and the LED during each is connected also is parallel with a Zener diode (as the DZ1-DZ8 among the figure).The positive pole of LED lamp group 6 is connected with the Vin terminal of HV9910, and negative pole is connected with inductance L 1.
Operation principle of the present utility model is:
Metal-oxide-semiconductor Q1 conducting when powering on, HVDC arrives ground through LED lamp group 6, inductance L 1, metal-oxide-semiconductor Q1, the 3rd resistance R 3.In this process, the electric current on the inductance L 1 is linear to be increased, and the voltage on the 3rd resistance R 3 constantly increases, and when the voltage on the 3rd resistance R 3 reached 250mV, HV9910 control metal-oxide-semiconductor Q1 closed, and power up finishes.Discharge process begins, and during discharge, electric current is flowed out by inductance L 1, after the 6th diode D6 and LED lamp group 6, gets back to inductance L 1.Wherein the forward voltage drop of the conducting resistance of the resistance of inductance L 1, metal-oxide-semiconductor Q1 and the 6th diode D6 is the key factor that influences led drive circuit 5 efficient.In LED lamp group 6, the Zener diode of each LED two ends reverse parallel connection is to prevent that the electric current among other LED of series connection with it can not increase when some LED damages are opened circuit.Selecting for use of storage capacitor 4 is very crucial, preferably selects CD273 type energy storage dedicated capacitor for use, if reduce cost, also can use common capacitor, but must selection work temperature height, high-quality electrolytic capacitor that leakage current is little.
The storage capacitor 4 that the utility model uses has following advantage:
1) life-span long, the cycle life of nickel-cadmium cell and Ni-MH battery only has 500～1000 times, And the cycle life of energy-storage capacitor can reach tens0000 times.
2) energy-storage capacitor can not overcharge and the phenomenon of overdischarge, memory effect yet Should. Therefore needn't as nickel-cadmium cell and Ni-MH battery, need to overcharge and the over electricity The road, thus the charging circuit of energy-storage capacitor and simple, as long as control not mistake of charging current Get final product greatly.
3) charging of energy-storage capacitor can be finished in tens seconds at tens seconds.
4) contain hardly poisonous element in the energy-storage capacitor, in process of production and scrap after, Hardly can be to environment.
In sum, in fire-fighting emergent identification lamp, adopt energy-storage capacitor to replace nickel-cadmium cell And Ni-MH battery, not only overcome the shortcoming of using nickel-cadmium cell and Ni-MH battery, raising is disappeared The service life of anti-emergent identification lamp and other performances have the effect of highly significant.
Claims (4)
1. condenser type fire-fighting emergent identification lamp; comprise input current limliting and overvoltage crowbar (1), rectifier circuit (2), led drive circuit (5) and LED lamp group (6); the output of described input current limliting and overvoltage crowbar (1) is connected with the input of rectifier circuit (2); the output of described led drive circuit (5) is connected with the input of LED lamp group (6); it is characterized in that: the output of described rectifier circuit (2) is connected with storage capacitor (4), and described storage capacitor (4) is given LED lamp group (6) power supply by led drive circuit (5).
2. condenser type fire-fighting emergent identification lamp according to claim 1 is characterized in that, described storage capacitor (4) is a CD273 type energy-storage capacitor.
3. condenser type fire-fighting emergent identification lamp according to claim 1, it is characterized in that, the output of described rectifier circuit (2) also is parallel with civil power indicating circuit (3), and described civil power indicating circuit (3) is composed in series by first resistance (R1) and LED light.
4. condenser type fire-fighting emergent identification lamp according to claim 1 is characterized in that, described led drive circuit (5) adopts the HV9910 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920032507U CN201382352Y (en) | 2009-04-08 | 2009-04-08 | Capacitance fire emergency identification lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920032507U CN201382352Y (en) | 2009-04-08 | 2009-04-08 | Capacitance fire emergency identification lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382352Y true CN201382352Y (en) | 2010-01-13 |
Family
ID=41525825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920032507U Expired - Fee Related CN201382352Y (en) | 2009-04-08 | 2009-04-08 | Capacitance fire emergency identification lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382352Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008141A1 (en) * | 2014-07-17 | 2016-01-21 | iWatt Integrated Circuits Technology (Tianjin) Limited | Adaptive power balancing in led lamps |
| CN105282913A (en) * | 2014-07-17 | 2016-01-27 | 艾尔瓦特集成电路科技（天津）有限公司 | Adaptive power balancing in LED lamps |
| CN105636271A (en) * | 2016-01-29 | 2016-06-01 | 深圳和而泰照明科技有限公司 | Protection circuit for LED light source and LED light source |
-
2009
- 2009-04-08 CN CN200920032507U patent/CN201382352Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008141A1 (en) * | 2014-07-17 | 2016-01-21 | iWatt Integrated Circuits Technology (Tianjin) Limited | Adaptive power balancing in led lamps |
| CN105282913A (en) * | 2014-07-17 | 2016-01-27 | 艾尔瓦特集成电路科技（天津）有限公司 | Adaptive power balancing in LED lamps |
| CN105282913B (en) * | 2014-07-17 | 2019-05-31 | 戴泺格集成电路（天津）有限公司 | Adaptive power balance in LED light |
| US11445586B2 (en) | 2014-07-17 | 2022-09-13 | Dialog Integrated Circuits (Tianjian) Limited | Adaptive power balancing in LED lamps |
| CN105636271A (en) * | 2016-01-29 | 2016-06-01 | 深圳和而泰照明科技有限公司 | Protection circuit for LED light source and LED light source |
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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: 20100113 Termination date: 20100408 |