CN201162977Y - Pyroelectricity infrared induction ceiling lamp - Google Patents
Pyroelectricity infrared induction ceiling lamp Download PDFInfo
- Publication number
- CN201162977Y CN201162977Y CNU2008200914972U CN200820091497U CN201162977Y CN 201162977 Y CN201162977 Y CN 201162977Y CN U2008200914972 U CNU2008200914972 U CN U2008200914972U CN 200820091497 U CN200820091497 U CN 200820091497U CN 201162977 Y CN201162977 Y CN 201162977Y
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- power supply
- led
- pyroelectric infrared
- circuit
- light source
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Abstract
The utility model relates to a pyroelectric infrared induction ceiling lamp, comprising an electric light source and a power supply circuit thereof arranged on the ceiling, wherein the power supply circuit comprises a pyroelectric infrared sensor through cascade connection, a time delay switch integrated circuit and an alternating current control output circuit as well as a rectification power supply circuit supplying power to the circuits, and the electric light source is LED; the power supply circuit of the electric light source also comprises a switch power supply, an output end of which is directly with the LED, and an input end of which is connected with an output end of the alternating current control output circuit, and an output of the pyroelectric infrared sensor controls the power supply to the LED; and a normally open contact of an alternating relay of the alternating current output circuit is serially connected with power cord of a controlled power supply, one normally closed contact is serially connected with commercial power alternating current fire wire, and the other normally closed contact is serially connected with fire-fighting emergency supply. The pyroelectric infrared induction ceiling lamp has the characteristics of energy conservation, high efficiency of light and long service life; moreover, the efficiency of light and the service life under illumination state in frequent short time is not affected, and can meet the normal power supply under the fire-fighting emergency state through forced power supply.
Description
Technical field
The utility model relates to light fixture, especially relates to a kind of pyroelectric infrared-sensing lamp affixed to the ceiling.
Background technology
The pyroelectric infrared-sensing lamp affixed to the ceiling is a powered lighting when changing by the acquisition environment Thermal Infra-Red, environment Thermal Infra-Red such as no change during the illumination, outage automatically after postponing setting-up time.Existing induction lamp affixed to the ceiling adopts glass lamp shade or the ring-like light pipe of electricity-saving lamp mostly, influenced by the electricity-saving lamp characteristics of luminescence, and its life-span is extremely short, often change, so power saving and not saving money.Particularly, under the fire-fighting emergent state, can not guarantee normal power supply because the civil power of shared inductive switch exchanges live wire.
Summary of the invention
Technical problem to be solved in the utility model is to remedy the defective that prior art exists, and a kind of long-life, high efficiency, easy for installation and can guarantee the pyroelectric infrared-sensing lamp affixed to the ceiling of normal power supply under the fire-fighting emergent state are provided.
Technical problem of the present utility model is solved by the following technical programs.
This pyroelectric infrared-sensing lamp affixed to the ceiling, comprise and inhale electric light source and the power supply circuits thereof that install on the top, the rectification power circuit that described power supply circuits comprise pyroelectric infrared sensor, delay switch integrated circuit and alternating current control output circuit that cascade connects and power for foregoing circuit.
The characteristics of this pyroelectric infrared-sensing lamp affixed to the ceiling are:
Described electric light source is LED; Its life-span is long, and average life span is more than 10 times of energy-efficient lamp, particularly uses under frequent short time illuminating state, and light efficiency and life-span are unaffected, and general the installation in the use of back need do not changed.
The power supply circuits of described electric light source also comprise the Switching Power Supply that output directly is connected with LED, and the input of described Switching Power Supply is connected with the output of alternating current control output circuit, are powered to LED by the output control of pyroelectric infrared sensor;
Described alternating current control output circuit is a switching transistor control output circuit, comprise that switching transistor, its coil get the AC relay that dead electricity is controlled by switching transistor, the normally opened contact of AC relay is connected in the power line of controlled electric light source, one normally-closed contact is connected on civil power and exchanges in the live wire, and another normally-closed contact is connected in the fire-fighting emergency power supply.
Technical problem of the present utility model is solved by following further technical scheme.
The middle power LED array that described LED is made up of at least one LED, every watt of luminous quantity is 65～70 lumens.Its luminous efficiency height, the lumen per watt coefficient is up to more than 30%.
Described LED adapted PMMA lampshade.PMMA is the abbreviation of polymethyl methacrylate (Poly-methylmethacrylate), is also referred to as acrylic acid sheet material, is commonly called as " lucite ", or acrylic (AcrylicSheet), has good optical characteristics and weatherability variation characteristic.
Described Switching Power Supply is the isolation type switch power of the permanent low pressure output of constant current, can guarantee that the LED safety long-life uses.
The beneficial effect that the utility model is compared with the prior art is:
The utlity model has energy-conservation, high light efficiency, long-life, under frequent short time illuminating state light efficiency and life-span unaffected, and can constrained feed to satisfy the characteristics of needs normal power supply under the fire-fighting emergent state.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model specific embodiment;
Fig. 2 is the circuit theory diagrams of the utility model specific embodiment.
The specific embodiment
Pyroelectric infrared-sensing lamp affixed to the ceiling as shown in Figure 1, 2, comprise and inhale electric light source and the power supply circuits thereof that install on the top that described power supply circuits comprise pyroelectric infrared sensor 1, BISS0001 delay switch integrated circuit 2 (U1), alternating current control output circuit 3 and the rectification power circuit 4 of the 500B type that cascade connects.N is 220 volts of electric main zero lines, and L is that 220 volts of electric main live wires are phase line, and C is 220 volts and exchanges the emergency power supply phase line.
The middle led array that the electric light source that install on the suction top is made up of LED1～LED24, general power is 12 watts, every watt of luminous quantity is 65～70 lumens.
Described delay switch integrated circuit 2 comprises that zero passage detection, oscillating circuit, counter, system clock, induced signal detect amplification and output control circuit, also external mu balanced circuit U2.
Described alternating current control output circuit 3 is switching transistor control output circuits, comprise that switching transistor Q1, its coil get dead electricity and be controlled by the preceding AC relay of switching transistor, the normally opened contact of AC relay is connected on the input of the Switching Power Supply 5 of controlled electric light source LED, it is among the phase line L that one normally-closed contact is connected on 220 volts of electric main live wires, and another normally-closed contact is connected in the fire-fighting emergency power supply C phase line.
Described rectification power circuit 4 is the rectifier bridges that comprise that commutation diode D2, D3, D4, D5 form.
Described Switching Power Supply 5 comprises rectifier bridge, step-down transformer T1 that commutation diode D6, D7, D8, D9 form and flyback switching converter U3, photoelectrical coupler U4, operational amplifier U5 and the voltage-stablizer U6 that uses a TNY276P device of TinySwitch-III series, and the led array of forming to LED1～LED24 of high brightness provides the load current up to 0.48A.Voltage-stabiliser tube VR1 provides the voltage feedback, and output voltage is adjusted at about DC12.8V.Detect output current by detecting resistance R 23, and feedback is provided for flyback switching converter U3 by operational amplifier U5 driving photoelectrical coupler U4.The TNY276P device is by turn-offing or skipping the switch mosfet cycle and carry out voltage stabilizing.Therefore when led array was connected to power supply, power work was in constant current (CC) pattern.When load current reached electric current threshold value is set, operational amplifier U5 drove photoelectrical coupler U4 conducting.Optical transistor in the photoelectrical coupler U4 is pulled out electric current from the EN/UV pin of flyback switching converter U3, makes its skip cycle.In case output current drops to electric current and is provided with below the threshold value, operational amplifier U5 stops to drive photoelectrical coupler U4, and the optical transistor in the photoelectrical coupler U4 stops to pull out electric current from the EN/UV pin of flyback switching converter U3, and switch periods enables again.Voltage-stablizer U6 (TL431) provides reference voltage for operational amplifier U5, and to compare with the voltage drop that detects resistance R 23 two ends, the output services that make Switching Power Supply 5 are in constant current (CC) pattern and constant voltage (CV) pattern.
The concrete course of work of Switching Power Supply 5 is as follows:
Rectifier bridge that 220V～electric main is formed through commutation diode D6, D7, D8, D9 and C19 filtering obtain the DC voltage about 300V.The clamp circuit of forming by resistance R 20, capacitor C 20, clamp diode D10; the leakage inductance shutoff voltage spike of flyback switching converter U3 drain electrode is controlled in the safety value scope, has protected its inner MOSFET drain electrode to avoid instead swashing the infringement of due to voltage spikes effectively.300V left and right sides DC voltage directly is added to flyback switching converter U3 drain electrode through the elementary winding of step-down transformer T1, its internal circuit is started working, because the coupling of step-down transformer T1, transformer secondary output provides the voltage feedback through the DC voltage that diode D11 rectification, capacitor C 24 filtering obtain by voltage-stabiliser tube VR1 and photoelectrical coupler U4, and output voltage is adjusted at about DC12.8V.In output voltage surpasses voltage-stabiliser tube VR1 and photoelectrical coupler U4 during LED forward drop sum, electric current will flow to the LED in the photoelectrical coupler U4, optical transistor electric current strengthens in it, optical transistor in the photoelectrical coupler U4 is pulled out electric current from the EN/UV pin of flyback switching converter U3, makes flyback switching converter U3 skip cycle.When this electric current exceeds this enable pin threshold current, will suppress next switch periods.When output voltage was lower than feedback threshold, the enable pin of flyback switching converter U3 was carried out a switch periods.Enable the quantity in cycle by adjusting, can regulate output voltage.
When human body is mobile in pyroelectric infrared sensor 1 induction range, the small-signal that pyroelectric infrared sensor 1 is sensed detects through delay switch integrated circuit 2 amplifies back output, gauge tap transistor Q1 conducting, AC relay is got, the normally opened contact adhesive of input that it is connected on the Switching Power Supply 5 of controlled electric light source LED, the output control switch power supply 5 that makes alternating current control output circuit 3 is to the LED powered lighting.
When the needs fire-fighting emergent, the fire-fighting emergent port is inserted emergency power supply phase line C power supply, even unmanned induction, the live wire electric current still can be used for fire emergency to the LED power supply through the normally-closed contact output control switch power supply 5 of AC relay.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (4)
1. pyroelectric infrared-sensing lamp affixed to the ceiling, comprise and inhale electric light source and the power supply circuits thereof that install on the top, the rectification power circuit that described power supply circuits comprise pyroelectric infrared sensor, delay switch integrated circuit and alternating current control output circuit that cascade connects and power for foregoing circuit is characterized in that:
Described electric light source is LED;
The power supply circuits of described electric light source also comprise the Switching Power Supply that output directly is connected with LED, and the input of described Switching Power Supply is connected with the output of alternating current control output circuit, are powered to LED by the output control of pyroelectric infrared sensor;
Described alternating current control output circuit is a switching transistor control output circuit, comprise that switching transistor, its coil get the AC relay that dead electricity is controlled by switching transistor, the normally opened contact of AC relay is connected in the power line of controlled electric light source, one normally-closed contact is connected on civil power and exchanges in the live wire, and another normally-closed contact is connected in the fire-fighting emergency power supply.
2. pyroelectric infrared-sensing lamp affixed to the ceiling according to claim 1 is characterized in that:
The middle power LED array that described LED is made up of at least one LED.
3. pyroelectric infrared-sensing lamp affixed to the ceiling according to claim 1 and 2 is characterized in that:
Described LED adapted PMMA lampshade.
4. pyroelectric infrared-sensing lamp affixed to the ceiling according to claim 3 is characterized in that:
Described Switching Power Supply is the isolation type switch power of the permanent low pressure output of constant current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200914972U CN201162977Y (en) | 2008-01-11 | 2008-01-11 | Pyroelectricity infrared induction ceiling lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200914972U CN201162977Y (en) | 2008-01-11 | 2008-01-11 | Pyroelectricity infrared induction ceiling lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162977Y true CN201162977Y (en) | 2008-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200914972U Expired - Fee Related CN201162977Y (en) | 2008-01-11 | 2008-01-11 | Pyroelectricity infrared induction ceiling lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162977Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139002A1 (en) * | 2012-03-21 | 2013-09-26 | 深圳市讯宇创科技有限公司 | Induction lamp |
| CN104456336A (en) * | 2014-11-21 | 2015-03-25 | 广西智通节能环保科技有限公司 | Intelligent illumination moisture prevention and energy-saving ceiling lamp |
-
2008
- 2008-01-11 CN CNU2008200914972U patent/CN201162977Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139002A1 (en) * | 2012-03-21 | 2013-09-26 | 深圳市讯宇创科技有限公司 | Induction lamp |
| CN104456336A (en) * | 2014-11-21 | 2015-03-25 | 广西智通节能环保科技有限公司 | Intelligent illumination moisture prevention and energy-saving ceiling lamp |
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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: 20081210 Termination date: 20120111 |