CN207720482U - Full-automatic LED emergency light - Google Patents

Abstract

The utility model discloses a kind of full-automatic LED emergency lights, it is intended to solve existing emergency light the degree of automation low the technical issues of cannot automatically being lighted in accident power-off.The utility model includes accumulator charge circuit and light control time-delay circuit；Battery charging circuit includes the reducing transformer being sequentially connected in series, rectifier, voltage-stablizer, potentiometer, anti-recoil diode and lead accumulator；Light control time-delay circuit includes voltage detection unit, monostable time delay unit, switching transistor, optical detection circuit and function switch switch；Accumulator charge circuit ensures that accumulator electric-quantity is sufficient, and the pulse signal triggering monostable time delay circuit output high level sent out by optical detection circuit makes switching transistor conducting LED light shine.The advantageous effects of the utility model are：It is high degree of automation, simple in structure easy to make, at low cost easy to spread.

Description

Full-automatic LED emergency light

Technical field

The utility model is related to lighting apparatus technical fields, and in particular to a kind of full-automatic LED emergency light.

Background technology

In daily life, power supply system may cause suddenly because of some reasons such as aging circuit, electricity consumption are excessively high Power-off.When the evening draws on, if the power supply failed suddenly, being bound to, some are at a loss.Candle, hand can only be gropingly found in the dark Electricity, it is very inconvenient.Also some special places are such as：Hotel, restaurant or basement flow of personnel are intensive, by fabric structure Limitation, be also required to artificial light on daytime, if suddenly have a power failure, especially because burst accidental cause caused by have a power failure such as： Earthquake, fire can make evacuating personnel cause prodigious difficulty.

It is power supply general lighting lamp is load that existing emergency measure, which is using charged accumulator mostly, with portable or Fixed mode is set to fixed position, once powering off, people can look for this portable emergency lamp either fixed The switch of the emergency light of setting carries out temporary illumination, but this emergency light also needs to find a period of time in the dark, very Inconvenience, and the replacement that battery will not be frequent, it may occur however that the problem of battery capacity deficiency when in use.

Invention content

The technical problems to be solved in the utility model be existing emergency light the degree of automation it is low cannot in accident power-off from Dynamic the technical issues of lighting.

In order to solve the above technical problems, the utility model adopts the following technical solution：

Design a kind of full-automatic LED emergency light, including accumulator charge circuit and light control time-delay circuit；Accumulator charging electricity Road includes the reducing transformer being sequentially connected in series, rectifier, voltage-stablizer, potentiometer, anti-recoil diode and lead accumulator；Light control time-delay Circuit includes voltage detection unit, monostable time delay unit, switching transistor, optical detection circuit and function switch switch；Electricity It includes concatenated resistance R1 and R2, capacitance C1, NAND gate F1 to press detection unit, and capacitance C1 is connected in parallel on the both ends resistance R2, resistance R1 It is connected respectively with the input/output terminal of voltage-stablizer with the both ends of R2, series connection node is connected with the input terminal of the NAND gate F1； Monostable time delay circuit includes NAND gate F3 and F4, capacitance C5, resistance R6, be also in series between NAND gate F3 and NAND gate F1 with NOT gate F2, resistance R6 and NAND gate F3 are connected to the NAND gate F4 that two input terminals are connected；The output end of NAND gate F4 and switch three The base series of pole pipe, the collector of switching transistor is switched by function switch connects with LED light；Optical detection circuit includes light Quick resistance GR, resistance R3 and R5, capacitance C4, resistance R3 and photo resistance GR are connected to the anode of capacitance C4, the cathode of capacitance C4 The input terminal of NAND gate F2 is series at resistance R5；It is high that optical detection circuit sends out pulse signal triggering monostable time delay circuit output Level makes switching transistor conducting LED light shine.

Further, rectifier is bridge rectifier, and efficiency is higher, easy-to-connect.

Further, voltage-stablizer includes LM317 voltage stabilizing chips, and voltage regulation performance is good, low in energy consumption, cheap.

Further, anti-recoil diode is IN4001 type diodes.

Further, the specification of lead accumulator is 12V/1.2Ah, and service life is long.

Further, switching transistor includes C8050 type NPN triodes.

Further, photo resistance is MG45 type photo resistance, and resistance is nonlinear with the variation of illumination, for producing Raw pulse signal.

Further, function switch switch is single-pole three-throw switch, and the position that can flexibly switch K as needed is placed in centre Position is to force to disconnect, and it is automatic to be placed in leftward position, and it is manual ON to be placed in right side.

Compared with prior art, the advantageous effects of the utility model are：

1. the utility model high degree of automation can be lighted automatically when accident power-off, searching emergency button is eliminated Inconvenience, better user experience.

2. the utility model is simple in structure low in energy consumption, being connected in a certain way by common component need not use Complicated special circuit structure, component used are all low energy-consumption electronic device, and it is lower that ordinary incandescent lamp replaced with power consumption LED light, further save energy consumption.

3. the utility model occupation mode is various, it may be implemented automatic, manual by function switch switch or force to disconnect, Design more hommization.

4. the utility model is at low cost, easy to spread, used is all widely applied basic component such as IN4001 Diode, C8050 triodes meet functional requirement and cheap are easy to get.

Description of the drawings

Fig. 1 is the utility model electrical block diagram.

Specific implementation mode

Illustrate specific embodiment of the present utility model with reference to the accompanying drawings and examples, but following embodiment only uses It is described in detail the utility model, does not limit the scope of the utility model in any way.

The devices such as involved unit module, parts, structure or sensor in following embodiment, unless otherwise instructed, It is then conventional commercial product.

Embodiment 1：A kind of full-automatic LED emergency light, referring to Fig. 1, including accumulator charge circuit and light control time-delay circuit Two parts form.Alternating voltage obtains the DC voltage of 18V, by D2, R4,12V/ by transformer pressure-reducing after rectifying and wave-filtering Lead-acid accumulator and LM317 the composition constant pressure of 1.2Ah, current limliting Float Charging Power, it can be ensured that accumulator is in full charge at any time The float charge voltage of state, 12V lead-acid accumulators is 14.4V.LM317 is connected into constant pressure source, and W is accurate multi-turn adjustable potentiometer, is led to Cross the 15.1V DC voltages that adjustment W can make the output of output terminals A point stable.Resistance R4 can limit charging current, and D2 can To prevent accumulator back discharge after mains failure.R1, R2, C1, D1, F1 form ac voltage detection circuit, work as alternating voltage B points voltage after partial pressure is 8 volts or so when normal, and low level is exported after F1 reverse phases.When alternating voltage has a power failure, because There is D1 isolation, so B point voltages fall to rapidly 0 volt, high level is exported after F1 reverse phases.CD4011BP be COMS types four with it is non- Door integrated circuit, if by two input terminals and to be unified into an input terminal so this NAND gate equivalent at a NOT gate.Door electricity Road input characteristics is：Input voltage is input low level when being less than 40% supply voltage；Input voltage is more than 60% supply voltage When be input high level.Output voltage is close to positive voltage when exporting high level；Output voltage is close to 0 when exporting low level Volt.Two NAND gates F3, F4 and C5, R6 form monostable time delay circuit in figure, and delay time is determined by the numerical value of C5 and R6, According to the numerical value delay time in figure at 10 minutes or so, when delay circuit enters delay monostable, F4 exports low level, makes Triode T conductings, light bulb are lighted.The operating condition of single stabilization delay circuit be F2 output low level, to make F2 output low level that Two input terminals of F2 all input high level, one of input terminal must be used for monitoring alternating voltage, when only having a power failure High level can be exported, another input terminal is light-operated test side.R3, GR, C4 and R5 form light-operated detection circuit, for detecting The situation of change of ambient enviroment light, when ambient light is gradually by dying down by force（From daytime to night）Or it changes from weak to strong（From night Evening to daytime）When, the resistance value generation of photo resistance GR is slowly varying, keeps the voltage at its both ends also slowly varying therewith, due to micro- Divide the isolation of capacitance C4 that R5 both end voltages is made to be 0V, delay circuit, which is not triggered, exports high level, drives triode T not works Make, emergency light does not work；When ambient light changes from weak to strong suddenly（It turns on light illumination at night）, the resistance value of GR by macromutation at small, The both ends GR generate a negative leaping voltage, and it is 0V to make R5 both end voltages still by C4, R5, and emergency light does not work equally；Only work as week Enclose light suddenly by dying down by force when（Power failure causes lights）, at big, one is formed at the both ends GR by micromutation the resistance value of GR Positive transition voltage makes the both ends R5 generate a positive pulse by differential circuit C4, R5, if being at this moment that alternating voltage disappears, F2 Another input terminal be also high level, then F2 export low level, triggering single stabilization delay circuit work, delay circuit enter prolongs Constantly F4 exports low level T conductings, and light bulb is lighted.By 10 minutes or so, single stabilization delay circuit exited monostability, and output is high Level, T is by light bulb extinguishes.K is function switch switch, and there are three positions：It is to force to disconnect to be placed in centre position, is placed in a left side Side position is automatic, and it is manual ON to be placed in right side, can flexibly switch the position of K as needed.It can be incited somebody to action when normal use Full-automatic emergency light connects AC power, and K is placed in automated location.The emergency light can be mounted on throughout the year month after month without nature The place of illumination can also be mounted on and be shone with substantial light, need the place of emergency lighting at night daytime.

The utility model is described in detail above in conjunction with drawings and examples, still, the skill of technical field Art personnel, can also be to each specific in above-described embodiment it is understood that without departing from the purpose of the present invention Parameter changes, and forms multiple specific embodiments, is the common variation range of the utility model, no longer detailed one by one herein It states.

Claims (8)

1. a kind of full-automatic LED emergency light, it is characterised in that：Including accumulator charge circuit and light control time-delay circuit；The storage Battery charger includes the reducing transformer being sequentially connected in series, rectifier, voltage-stablizer, potentiometer, anti-recoil diode and lead electric power storage Pond；The light control time-delay circuit include voltage detection unit, monostable time delay unit, switching transistor, optical detection circuit and Function switch switchs；The voltage detection unit includes concatenated resistance R1 and R2, capacitance C1, NAND gate F1, and capacitance C1 is in parallel Be connected respectively with the input/output terminal of voltage-stablizer at the both ends at the both ends resistance R2, resistance R1 and R2, series connection node with it is described with The input terminal of NOT gate F1 is connected；The monostable time delay circuit includes NAND gate F3 and F4, capacitance C5, resistance R6, NAND gate F3 It is also in series with NAND gate F2, resistance R6 and NAND gate F3 between NAND gate F1 and is connected to the NAND gate F4 that two input terminals are connected； The collector of the base series of the output end and switching transistor of the NAND gate F4, the switching transistor passes through the function Switching switch is connected with LED light；The optical detection circuit includes photo resistance GR, resistance R3 and R5, capacitance C4, resistance R3 and light Quick resistance GR is connected to the anode of capacitance C4, and cathode and the resistance R5 of capacitance C4 are series at the input terminal of NAND gate F2；The light Detection circuit, which sends out pulse signal triggering monostable time delay circuit output high level, makes switching transistor conducting LED light shine.

2. full-automatic LED emergency light according to claim 1, it is characterised in that：The rectifier is bridge rectifier.

3. full-automatic LED emergency light according to claim 1, it is characterised in that：The voltage-stablizer includes LM317 voltage stabilizing cores Piece.

4. full-automatic LED emergency light according to claim 1, it is characterised in that：The anti-recoil diode is IN4001 Type diode.

5. full-automatic LED emergency light according to claim 1, it is characterised in that：The specification of the lead accumulator is 12V/ 1.2Ah。

6. full-automatic LED emergency light according to claim 1, it is characterised in that：The switching transistor includes C8050 types NPN triode.

7. full-automatic LED emergency light according to claim 1, it is characterised in that：The photo resistance is that MG45 types are photosensitive Resistance.

8. full-automatic LED emergency light according to claim 1, it is characterised in that：The function switch switch is hilted broadsword three Throw switch.