JPH0557638U - Temperature alarm - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a convenient temperature alarm that issues an alarm when a preset temperature is reached. [Composition] A bottom electrode is provided in the vicinity of the bottom of a tube containing mercury up to an intermediate level inside, and a plurality of side electrodes communicating with the inside and outside are provided at different levels on the side of the tube. A temperature alarm, characterized in that it can be selectively connected to any one of a plurality of side electrodes via a battery and an alarm device in which electrodes are arranged in series.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a temperature alarm device that can be easily used at home.

[0002]

[Prior Art]

 Various alarms such as a fire alarm using a thermostat have been put into practical use as alarms for notifying that the temperature in the vicinity has reached a predetermined temperature.

[0003]

[Problems to be solved by the device]

 However, there is no temperature alarm that can easily set an arbitrary temperature and give an alarm when the temperature is reached. Therefore, an object of the present invention is to provide a convenient temperature alarm device that issues an alarm when a preset temperature is reached.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention adopts the following configuration. That is, in the temperature alarm according to the present invention, a bottom electrode is provided in the vicinity of the bottom of a tube containing mercury up to an intermediate level, and the side of the tube has a plurality of side electrodes communicating with the inside and outside. Are provided at different levels, and the bottom electrode can be selectively connected to any one of a plurality of side electrodes via a battery and an alarm device arranged in series.

[0005]

[Action]

 If either the bottom electrode or the side electrode is connected, the circuit will close and the alarm will operate when the temperature rises and the level of the mercury column reaches the level of that side electrode. You can know that you have reached.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment shown in the drawings will be described below. FIG. 1 shows an embodiment of the present invention. This temperature alarm 1 is provided inside a vertically supported thin tube body 2. Mercury 3 is included. The tubular body 2 is made of an insulating material such as glass, has a bottom electrode 5 communicating with the inside and the outside at the bottom thereof, and has a plurality of side electrodes 7, ... It is set aside. At the positions of the side electrodes 7, ..., A scale display 8 for indicating the temperature is provided, respectively, so that it can be used as a normal thermometer.

Inside the tube body 2, the mercury 3 is inserted from the bottom to the middle position in the vertical direction, forming a mercury column that expands and contracts depending on the temperature. On the other hand, between the bottom electrode 5 and the side electrode 7, there is provided a circuit in which a bell 10 as an alarm device and a battery 11 as a power source are connected in series, and one end of this circuit has a bottom portion. It is always connected to the electrode 5. In addition, a connector 13 that can be selectively connected to any of the plurality of side electrodes is provided at the opposite end of the circuit. By connecting this connector to the side electrode at the position of the desired temperature, the set temperature can be easily selected. The power source is not limited to the battery shown in the figure, but an AC power source, a vehicle battery, or the like can be used. As the alarm device, a lamp other than a bell, a buzzer, or the like can be used.

In this temperature alarm device 1, the connector 13 is used by connecting it to the side electrode 7 at the position of the desired temperature. When the ambient temperature reaches its set temperature, the upper surface of the mercury column rises and contacts the side electrode, thus closing the circuit and forming bell 10. Therefore, it is possible to know that the temperature has risen to the set temperature. Therefore, this alarm can be placed in a room, for example, to notify that the temperature of the room has risen above the set value. It can be used as an alarm. Also, since it can be used to notify abnormal temperature rise in the interior of a parked passenger car, it can also be used to prevent accidents when infants, pets, etc. are left indoors and parked.

[0009]

[Effect of the device]

 As is clear from the above description, the temperature alarm device according to the present invention is capable of selectively connecting the alarm circuit to the electrode at the position of the desired temperature, and has reached an arbitrary set temperature. Since the alarm is sometimes used for alarms, it is highly practical and can be used for various purposes other than the fire alarm. This indicator is convenient in handling because it is structurally simple and compact.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Temperature Alarm 2 Tubular Body 3 Mercury 5 Bottom Electrode 7 Side Electrode 10 Alarm

Claims (1)

[Scope of utility model registration request] 1. A bottom electrode is provided in the vicinity of the bottom of a tube containing mercury up to an intermediate level inside, and a plurality of side electrodes communicating with the inside and outside are provided at different levels on the side of the tube, A temperature alarm, wherein the bottom electrode is selectively connectable to any one of a plurality of side electrodes via a battery and an alarm device in which the bottom electrode is arranged in series.