CN201045443Y - Microcomputer automatic emergency light - Google Patents

Abstract

The utility model relates to an emergency lighting lamp for power failure. It includes a housing base, a lamp holder, a battery and a control circuit. The components of the control circuit are arranged on a circuit board. The housing base is a rectangular parallelepiped box. The lamp base is hinged above the housing base. As a rechargeable or battery, the battery is placed in the lower part of the shell through the battery box; a plurality of LED diodes are connected in parallel and connected to the control circuit, and installed on the substrate in a matrix; placed in the lamp holder. The control circuit adopts LM324 four-operation integrated circuit IC1, which can accurately control whether to charge the battery, so as to protect the battery. It has the characteristics of light weight, easy to carry, high brightness, low power consumption, high efficiency, long service life, etc. It can be used for emergency lighting when power failure occurs in various occasions.

Description

Microcomputer automatic emergency light

Technical field:

The utility model relates to an emergency lighting lamp for power failure.

Background technique:

The emergency light is mainly composed of a housing, a battery, a control circuit and a luminous body. The batteries of existing emergency lights generally use water batteries, and the illuminants generally use fluorescent tubes. Therefore, the existing emergency lights have disadvantages such as bulkiness, high energy consumption, and short service life. In addition, some of the existing emergency lights have unreasonable control circuits. , Even adopt mechanical switch, also influence the service life of emergency light.

Invention content:

The purpose of the utility model is to overcome the shortcomings of the existing emergency lights, and provide a fully automatic emergency light controlled by IC which is easy to carry, has low energy consumption and long service life.

The utility model comprises a shell base, a lamp holder, a battery and a control circuit. The components of the control circuit are arranged on the circuit board. Placed on the upper part of the housing base, the battery is a rechargeable lithium battery, and the battery is placed on the lower part of the housing base through the battery box; a plurality of LED diodes are connected in parallel and connected to the control circuit, and installed on the substrate in a matrix form, placed on the lamp head middle.

In the utility model, the control circuit includes a power supply circuit, a charging circuit and a switch circuit, wherein the charging circuit includes a PNP transistor Q5, an isolation diode D6, an integrated circuit IC1, a power indicator light D14, a charging indicator light D13 and a completion indicator light D12 , the positive pole of the power supply output by the power supply circuit is connected to the positive pole of the battery through the e pole and c pole of the PNP transistor Q5 and the diode D6, the negative pole of the power supply is connected to the negative pole of the battery, the fourth pin of the integrated circuit IC1 is connected to the positive pole of the power supply, and the integrated circuit IC1 The third pin of the integrated circuit IC1 is used as the input control terminal and connected to the positive pole of the battery through the sampling resistor R19; the first pin of the integrated circuit IC1 is used as the output control terminal and connected to the b pole of the PNP transistor Q5 through the bias resistor R10; the power indicator light D14 is connected in series The current limiting resistor R14 is connected to the power supply; the charging indicator D13 is connected in series with the resistor R11 and connected between pin 7 and pin 1 of the integrated circuit IC1; the completion indicator D12 is connected in series with the resistor R18 and connected to the pin 1 of the integrated circuit IC1 Between pin 8 and pin 1.

In the utility model, the switch circuit includes triode Q2, PNP type triode Q3, triode Q4, triode Q6, molded button switch K3, "on" button switch K1 and "off" button switch K2, and the b pole of the triode Q2 passes the bias Resistor R8 is connected to the positive pole of the power supply, the c pole of the triode Q2 is connected to the b pole of the triode Q4, the e pole of the triode Q2 is connected to the negative pole of the battery, and the switch K3 is connected between the b pole and the e pole of the triode Q2; the triode Q6 The b pole of the transistor Q6 is connected to the positive pole of the power supply through the bias resistor R28, the c pole of the transistor Q6 is connected to the b pole of the PNP transistor Q3 through the resistor R26 and the diode D9, the e pole of the transistor Q6 is connected to the negative pole of the battery, and the b pole of the transistor Q6 The "off" button switch K2 is connected to the e pole, and the "on" button switch K1 is connected in series with the resistor R27 and connected between the c pole and b pole of the triode Q6; the e pole of the PNP transistor Q3 is connected to the positive pole of the battery, PNP The c pole of the transistor Q3 is connected to the b pole of the transistor Q4 through the resistor R7, and the resistor R25 is connected between the b pole and the e pole of the PNP transistor Q3, and the c pole of the PNP transistor Q3 is connected to the b pole of the transistor Q4 through the resistor R7. The e pole of the triode Q4 is connected to the negative pole of the battery, and a plurality of LED diodes D15 and D16 are connected in parallel between the c pole of the triode Q4 and the positive pole of the battery.

In the present utility model, the switch circuit can also include one or more than one triode Q7, the b pole and e pole of the triode Q7 are respectively connected with the b pole and e pole of the triode Q4, and the c pole of the triode Q7 and the battery A plurality of LED diodes D17 and D18 connected in parallel are connected between the positive electrodes.

In the utility model, the power indicator light D14, the charging indicator light D13, the completion indicator light D12, the analog button switch K3, the "on" button switch K1 and the "off" button switch K2 are arranged on the front of the housing.

The utility model has the characteristics of simple structure, light weight, portability, high brightness, low power consumption, high efficiency, long service life, etc., and can be used for emergency lighting when power failure occurs in various occasions.

Description of drawings:

Fig. 1 is a perspective view of the appearance of the embodiment; Fig. 2 is a perspective view of the use state; Fig. 3 is a structural schematic diagram; Fig. 4 is an electrical schematic diagram.

In the figure, 10, shell base 20, lamp holder 21, lamp holder panel 30, battery 31, battery box 40, circuit board 41, component 50, substrate 51, LED diode 60, folding plug.

Detailed ways:

With reference to accompanying drawing, this microcomputer full-automatic emergency lamp comprises housing base 10, lamp cap 20, battery 30 and control circuit, and the element 41 of control circuit is arranged on the circuit board 40, and described housing base 10 is a cuboid box body, and lamp base 20 is hinged Above the housing base 10, the circuit board 40 is placed on the upper part of the housing base 10, the battery 30 is a rechargeable lithium battery, and the battery 30 is placed on the lower part of the housing base 10 through the battery box 31; after a plurality of LED diodes 51 are connected in parallel It is connected with the control circuit, installed on the substrate 50 in matrix form, and placed in the lamp holder 20 . Since the lamp head 20 is hinged on the shell base 10, the lighting angle can be adjusted.

In this embodiment, the control circuit includes a power supply circuit, a charging circuit and a switch circuit. The power circuit is the same or similar to the prior art. Among them: the charging circuit includes PNP transistor Q5, isolation diode D6, integrated circuit IC1, power indicator light D14, charging indicator light D13 and completion indicator light D12, and the positive pole of the power supply output by the power circuit passes through the e pole and c pole of the PNP transistor Q5 And the diode D6 is connected to the positive pole of the battery 30, the negative pole of the power supply is connected to the negative pole of the battery 30, the 4th pin of the integrated circuit IC1 is connected to the positive pole of the power supply, and the 3rd pin of the integrated circuit IC1 is used as the input control terminal through the sampling resistor R19 and the battery 30 Positive connection; the first pin of the integrated circuit IC1 is used as the output control terminal and connected to the b pole of the PNP transistor Q5 through the bias resistor R10; the power indicator D14 is connected to the power supply after the current limiting resistor R14 is connected in series; the charging indicator D13 is connected in series The resistor R11 is connected between the 7th pin and the 1st pin of the integrated circuit IC1; after the indicator light D12 is connected in series with the resistor R18, it is connected between the 8th pin and the 1st pin of the integrated circuit IC1; the switch circuit includes a triode Q2, PNP transistor Q3, transistor Q4, transistor Q6, analog button switch K3, "on" button switch K1 and "off" button switch K2, the b pole of the transistor Q2 is connected to the positive pole of the power supply through the bias resistor R8, and the transistor Q2 The c pole is connected to the b pole of the triode Q4, the e pole of the triode Q2 is connected to the negative pole of the battery, and the analog switch K3 is connected between the b pole and the e pole of the triode Q2; the b pole of the triode Q6 is connected to the positive pole of the power supply through the bias resistor R28 , the c pole of the triode Q6 is connected to the b pole of the PNP transistor Q3 through the resistor R26 and the diode D9, the e pole of the triode Q6 is connected to the negative pole of the battery, and the "off" button switch K2 is connected between the b pole and the e pole of the triode Q6 , the "on" button switch K1 is connected in series with the resistor R27 and connected between the c pole and the b pole of the transistor Q6; the e pole of the PNP transistor Q3 is connected to the positive pole of the battery, and the c pole of the PNP transistor Q3 is connected to the transistor Q4 through the resistor R7 The b pole of the triode Q4 is connected to the negative pole of the battery, and a plurality of LED diodes D15 and D16 are connected in parallel between the c pole of the triode Q4 and the positive pole of the battery.

In this embodiment, the switch circuit further includes a triode Q7, the b pole and e pole of the triode Q7 are respectively connected to the b pole and e pole of the triode Q4, and a plurality of transistors are connected in parallel between the c pole of the triode Q7 and the positive pole of the battery. Only LED diodes D17, D18.

In this embodiment, the power indicator light D14 , the charging indicator light D13 , the completion indicator light D12 , the analog button switch K3 , the “on” button switch K1 and the “off” button switch K2 are arranged on the front of the casing 10 .

In this embodiment, in order to protect the service life of the rechargeable battery, an ultra-low voltage protection circuit is set in the switch circuit, that is, the resistance values of the resistors R25 and R26 are reasonably selected. When the battery discharge voltage is as low as 2.8V, the triode Q6 cannot work normally. , all circuits stop working.

Its working principle is: when the foldable plug 60 is inserted into the mains socket, the AC 220V mains is rectified by the diode D1, the resistor R3 is used as a safety resistor, and after filtering by the capacitor C1, a DC voltage of about 300V is generated. The DC voltage passes through pins ② and ① of the transformer L1 all the way. The other path provides bias voltage to the transistor Q1 through the resistor R2. R5 is the lower bias resistor, diode D2, resistor R4, and capacitor C3 are the absorbing circuit. Diode D4 is rectified and stabilized by diode D3. The feedback voltage is charged by capacitor C2 through resistor R6, so that transistor Q1 maintains a normal working voltage. After the vibration starts, the ③ and ④ pins of the transformer L1 have an AC voltage, which is rectified by the diode D5 and filtered by the capacitor C6, and outputs a DC power supply voltage of 7-8V to provide a DC power supply voltage for the control circuit and the switching circuit.

The integrated circuit IC1 in the control circuit adopts LM324 four-operation circuit design. The 4th pin of IC1 is connected to the positive pole of the power supply, and the 11th pin is connected to the negative pole of the power supply. D14 is the power indicator light. Pin 1 of IC1 is the output control terminal. When the battery voltage is lower than 4.2V, the signal voltage output by pin 1 of IC1 turns on the transistor Q5, and the current through the C pole increases to charge the battery. At this time, the charging indicator light D13 flashes; when the voltage value of the battery reaches 4.2V, the signal voltage output by pin 1 of IC1 makes the triode Q5 cut off, and the power supply voltage turns into the trickle current mode through the current limiting resistor R17, and stops charging the battery. The indicator light D12 is on, and the charging indicator light D13 is off, thereby protecting the battery.

When the mains is normal, the triode Q2 is turned on, the internal resistance between the e pole and the c pole becomes smaller, and the b poles of the triode Q4 and the triode Q7 have no bias voltage and are cut off. At this time, the LED diodes D15, D16, D17, D18 The light is off; when the die is pressed to switch K3, the b pole and e pole of Q2 are short-circuited and cut off, the power supply voltage supplies the bias voltage of the triode Q6 through the resistor R28, the triode Q6 is turned on, and the triode Q3 is also turned on to work, charging The voltage is turned on by providing the bias voltage for the transistors Q4 and Q7 through the transistor Q3 and the resistor R7, and the LED diodes D15, D16, D17 and D18 are turned on.

When the mains power stops, the base of the transistor Q2 has no bias voltage, and the c-pole of the transistor Q3 provides bias voltage to the transistors Q4 and Q7 through the resistor R7, so that the transistors Q4 and Q7 are turned on and the LED diodes D15, D16, D17, D18 On, start the emergency lighting; the triode Q6 works close to the on-off state, when the "off" button switch K2 is pressed, the b pole of the triode Q6 is grounded, the triode Q6 is cut off, and the base of the triode Q3 has no bias voltage. The b poles of the transistors Q4 and Q7 are cut off without bias voltage, and the LED diodes D15, D16, D17, and D18 are off; when the "on" button switch K1 is pressed, the battery voltage passes through the resistor R25, diode D9, and resistors R26 and R27. The b pole of the transistor Q6 provides a bias voltage, the transistor Q6 is turned on, the conduction of the transistor Q6 makes the transistor Q3 also conduct, the b poles of the transistors Q4 and Q7 are biased and turned on, and the lighting LED diodes D15, D16, D17 , D18 is bright.

Claims (6)

1. A kind of microcomputer full-automatic emergency lamp, comprises shell base (10), lamp holder (20), battery (30) and control circuit, the element (41) of control circuit is arranged on the circuit board (40), it is characterized in that: The housing base (10) is a cuboid box body, the lamp head (20) is hinged above the housing base (10), the circuit board (40) is placed on the upper part of the housing base (10), and the battery (30) is a rechargeable Lithium battery, the battery (30) is placed in the lower part of the shell seat (10) through the battery box (31); a plurality of LED diodes (51) are connected in parallel and then connected to the control circuit, and installed on the substrate (50) in a matrix form , placed in the lamp holder (20). 2. The microcomputer automatic emergency light according to claim 1, characterized in that: the control circuit includes a power supply circuit, a charging circuit and a switch circuit, wherein the charging circuit includes a PNP transistor (Q5), an isolation diode (D6) , integrated circuit (IC1), power indicator light (D14), charging indicator light (D13) and completion indicator light (D12), the positive pole of the power supply output by the power circuit passes through the e pole, c pole and diode ( D6) is connected to the positive pole of the battery (30), the negative pole of the power supply is connected to the negative pole of the battery (30), the 4th pin of the integrated circuit (IC1) is connected to the positive pole of the power supply, and the 3rd pin of the integrated circuit (IC1) is used as an input control terminal through The sampling resistor (R19) is connected to the positive pole of the battery (30); the first pin of the integrated circuit (IC1) is used as the output control terminal to connect with the b pole of the PNP transistor (Q5) through the bias resistor (R10); the power indicator light ( D14) Connect the current limiting resistor (R14) in series with the power supply; the charging indicator light (D13) is connected between the pin 7 and pin 1 of the integrated circuit (IC1) after connecting the resistor (R11) in series; the completion indicator light ( D12) Connect the resistor (R18) in series between pin 8 and pin 1 of the integrated circuit (IC1). 3. The microcomputer automatic emergency light according to claim 2, characterized in that: the power indicator light (D14), the charging indicator light (D13) and the completion indicator light (D12) are arranged on the front of the housing (10) . 4. The microcomputer automatic emergency light according to claim 2 or 3, characterized in that: the switch circuit includes a triode (Q2), a PNP type triode (Q3), a triode (Q4), a triode (Q6), an analog button The switch (K3), the "on" button switch (K1) and the "off" button switch (K2), the b pole of the triode (Q2) is connected to the positive pole of the power supply through the bias resistor (R8), and the c pole of the triode (Q2) is connected to the positive pole of the power supply The b pole of the triode (Q4) is connected, the e pole of the triode (Q2) is connected with the negative pole of the battery, and the analog switch (K3) is connected between the b pole and the e pole of the triode (Q2); the b pole of the triode (Q6) passes the bias The resistor (R28) is connected to the positive pole of the power supply, the c pole of the triode (Q6) is connected to the b pole of the PNP transistor (Q3) through the resistor (R26) and the diode (D9), and the e pole of the triode (Q6) is connected to the negative pole of the battery , Connect the "off" button switch (K2) between the b pole and the e pole of the triode (Q6), and connect the c pole and b pole of the triode (Q6) after the "on" button switch (K1) is connected in series with a resistor (R27). Between the poles; the e pole of the PNP transistor (Q3) is connected to the positive pole of the battery, and the c pole of the PNP transistor (Q3) is connected to the b pole of the transistor (Q4) through a resistor (R7). Between the b pole and the e pole, connect the resistor (R25), the c pole of the PNP transistor (Q3) is connected to the b pole of the triode (Q4) through the resistor (R7); the e pole of the triode (Q4) is connected to the negative pole of the battery, A plurality of LED diodes (D15, D16) are connected in parallel and connected between the c pole of the triode (Q4) and the positive pole of the battery. 5. The microcomputer automatic emergency light according to claim 4, characterized in that: the switch circuit also includes one or more than one triode (Q7), and the b pole and e pole of the triode (Q7) are connected with the triode respectively. The b pole of (Q4) is connected to the e pole, and a plurality of LED diodes (D17, D18) connected in parallel are connected between the c pole of the triode (Q7) and the positive pole of the battery. 6. The microcomputer automatic emergency light according to claim 4 or 5, characterized in that: the analog button switch (K3), the "on" button switch (K1) and the "off" button switch (K2) are arranged on the shell the front of the body (10).

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