JP6140417B2 - Security buzzer - Google Patents

Description

  The present invention relates to a security buzzer.

  In recent years, it has become common to wear a security buzzer to protect against crimes when going out. In particular, elementary school students who go to school where their parents and teachers cannot reach are difficult to inform their surroundings that they are in danger. Such a security buzzer is also worn by several of the children who go to school together, leading to crime prevention.

  Patent document 1 is disclosing about the portable alarm device which can select either the audio | voice 1 which is an attention warning audio | voice, and the audio | voice of the combination of the audio | voice 1 and the audio | voice 2 which seeks relief.

Japanese Patent Laid-Open No. 10-105836

  The security buzzer must output a buzzer sound with a single operation when it feels dangerous. For this reason, it is desirable to regularly test security buzzers. In this test, it is desirable to actually output a buzzer sound to the security buzzer in order to confirm not only the battery exhaustion but also the circuit breakage.

  However, if the check is performed at a loud volume that is actually used, there is a risk that it may be mistaken for what is informing the danger. Also, if the surroundings get used to the buzzer sound by repeatedly testing at a high volume, the perception that the surrounding sound is a buzzer sound that is in danger is lowered, and the effect of the security buzzer is reduced. There is also a risk.

  On the other hand, people who have a security buzzer want to be able to test it whenever they feel anxiety about whether the security buzzer will work. In particular, elementary school students and the like are likely to hit a security buzzer attached to the bag against objects on a daily basis, so it is possible that the circuit and the audio output unit will be damaged. Therefore, there is a need for a security buzzer that can be tested on a daily basis and whenever it becomes noticed.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a security buzzer that can be tested on a daily basis.

  The security buzzer of the present invention includes a sound output unit that outputs a sound that informs the surroundings of a dangerous state, an output switch that causes the sound output unit to output the sound when activated, and an output from the sound output unit A security buzzer comprising: a low volume circuit for lowering the volume to be generated; and a test switch that activates the low volume circuit when activated.

  The security buzzer of the present invention may further include a biasing member that biases the test switch to a non-operating state.

  In the crime prevention buzzer according to the present invention, the test switch may be operated only for the conduction to the low-volume circuit, and may not be accompanied by a disconnection operation for other circuits.

  In the crime prevention buzzer of the present invention, the test switch is activated by being pressed, and the pressed surface is in a non-operating state and is continuous with the housing surface or inside the continuous surface. It may be a surface.

It is a figure shown about the security buzzer which concerns on one Embodiment of this invention. It is a circuit diagram which shows roughly the structure of the circuit integrated in the main body. It is a figure which shows the example of the cross section of the test switch in the III-III line of FIG. It is a figure which shows the example of the cross section of the test switch in the III-III line of FIG. FIG. 3 is a circuit diagram which is a modification of the circuit shown in FIG. 2.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a view showing a security buzzer 100 according to an embodiment of the present invention. As shown in this figure, the security buzzer 100 includes an oval-shaped main body 101, a pin 103 that is an output switch that outputs a buzzer sound when pulled, and a pin 103 that is attached to the pin 103 to pull the pin 103. An output switch strap 104, a test switch 102 used for a buzzer sound output test of the security buzzer 100, and an attachment strap 105 for attaching the main body 101 to a bag or the like. . Here, the pin 103 which is an output switch is a pull switch which keeps outputting a buzzer sound in a pulled state and stops output when pushed back. The test switch 102 is energized so as to be in an OFF (non-operating) state when not pressed, and is in an ON (operating) state only while the test switch 102 is kept pressed.

  FIG. 2 is a circuit diagram schematically showing the configuration of the circuit 110 incorporated in the main body 101. The circuit 110 includes a power source 111, a pin 103 which is an output switch having one end connected to the power source, a transistor 114, an audio output unit 112 having one end connected to the collector of the transistor 114, and one end at the base of the transistor 114. And the other end of the audio output unit 112 and the other end of the resistor 113 are both connected to the other end of the output switch of the pin 103. The emitter of the transistor 114 is grounded, and a small volume circuit 120 including the test switch 102 and the grounded resistor 115 is formed on the base side of the transistor 114.

  As described with reference to FIG. 1, the pin 103 is a pull switch that is turned on when the output switch strap 104 is pulled and turned off when pushed back, and the test switch 102 is turned on only when it is pressed. And is normally biased by a spring 119 which is a biasing member so as to be OFF.

  At the time of normal buzzer sound output, the output switch strap 104 is pulled while the test switch 102 is urged OFF, and the output switch of the pin 103 is turned ON. In this state, since the base potential of the transistor 114 is increased through the resistor 113, the transistor 114 is turned on and a buzzer sound is output from the audio output unit 112.

  On the other hand, when the output switch strap 104 is pulled while the test switch 102 is being pressed and the output switch of the pin 103 is turned ON, the circuit operates in the same manner as when a normal buzzer sound is output. Since the low volume circuit 120 is turned on, the base of the transistor 114 is grounded via the resistor 115, and the base voltage becomes lower than that during normal buzzer sound output, and the current flowing through the transistor 114 is also reduced. For this reason, the electric current which flows through the audio | voice output part 112 decreases, and a buzzer sound is output with a smaller sound. Thus, by pressing the test switch 102, it is possible to perform a test with a reduced volume while using the output circuit for notifying a normal dangerous state as it is.

  That is, since the security buzzer 100 has the test switch 102, the security buzzer 100 can be tested at a low volume without outputting at a normal high volume. In addition, since a normally used circuit is used as it is without being disconnected, it is possible not only to check the power supply but also to test for a malfunction of the circuit including the audio output unit 112 at a low volume. Therefore, the security buzzer 100 can be tested every day and whenever necessary without worrying about the surroundings. Also, since the test switch 102 is energized so as to be in the OFF state, when it is desired to output at a volume for notifying a dangerous state, the test switch 102 is output at a normal volume without reducing the volume at the time of the test. be able to.

  3A and 3B show examples of a partial cross section of the test switch 102 taken along the line III-III in FIG. In FIG. 3A, the surface on which the test switch 102 is pressed is formed as a surface continuous with the surface of the main body 101 in the OFF state. In FIG. 3B, the surface on which the test switch 102 is pressed is formed so as to be inside the surface continuous with the surface of the main body 101. Thus, by forming the pressing surface of the test switch 102 continuously or inside the surface of the main body 101, it is possible to avoid a state where the test switch 102 is accidentally pressed when the security buzzer 100 is used. Can be output at normal volume.

  FIG. 4 shows a circuit 210 that is a modification of the circuit 110 shown in FIG. Since the configuration of the power supply 111, the pin 103, the audio output unit 112, the resistor 113, and the transistor 114 is the same as that of the circuit 110, description thereof is omitted. The circuit 210 does not reduce the current flowing through the base of the transistor 114 like the small volume circuit 120 of the circuit 110, but the circuit 210 is switched to a circuit including the resistor 215 by the test switch 202. Is a small volume circuit 220 that lowers the volume. As in FIG. 2, the test switch 202 is urged by a spring 219 that is an urging member so that the test switch 202 is turned off when not pressed. Even when such a circuit 210 is used, a security buzzer test can be performed at a low volume without outputting at a normal high volume. In addition, since the test switch 202 is biased by the spring 219 so as to be in the OFF state, when it is desired to perform an output for notifying a dangerous state, the test switch 202 is output at a normal volume without reducing the volume during the test. Can be made.

  In this embodiment, the crime prevention buzzer and the test switch are shaped as shown in FIG. 1, but this shape may be any shape. In the present embodiment, the pin 103 is configured to function as an ON / OFF switch without being removed from the main body 101. However, the pin 103 may be configured to function when disconnected.

  100 security buzzer, 101 body, 102 test switch, 103 pins, 104 output switch strap, 105 mounting strap, 110 circuit, 111 power supply, 112 audio output section, 113 resistance, 114 transistor, 115 resistance, 119 spring, 120 small Volume circuit, 202 Test switch, 210 circuit, 215 resistance, 219 spring, 220 Low volume circuit.

Claims (4)

An audio output unit that outputs a sound to inform the surroundings of a dangerous state;
An output switch that causes the sound output unit to output the sound by operating;
A low volume circuit for lowering the volume output from the audio output unit;
A test switch for conducting the small volume circuit by operating , and
The output switch can be switched between an operating state and a non-operating state by being operated,
The test switch can be switched between an operating state and a non-operating state independently of the output switch by being operated.
The audio output unit has a smaller volume when the output switch is activated when the test switch is in operation than when the output switch is activated when the test switch is inactive. Output sound
Crime prevention buzzer. The security buzzer according to claim 1,
A security buzzer, further comprising a biasing member that biases the test switch to a non-operating state. A security buzzer according to claim 1 or 2,
The crime prevention buzzer characterized in that the operation of the test switch is only a conduction operation to the low-volume circuit and is not accompanied by a cutting operation of other circuits. A security buzzer according to any one of claims 1 to 3,
The test switch is activated by being pressed, and the pressed surface is a surface that is continuous with the housing surface in a non-operating state or a surface that is on the inner side of the continuous surface. buzzer.

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