JPS5924923Y2 - electronic kotatsu board - Google Patents

Description

[Detailed description of the invention] This invention relates to an electronic kotatsu board that is heated with a heater.

The purpose of this project is to install a switch inside that detects the state of use of the kotatsu board so that the internal heater turns on and is energized only when the kotatsu board is used with the surface material exposed. To provide an electronic kotatsu board with improved operability by changing the heater.

For example, when the back side is used for standing up or playing mahjong, the switch member is automatically turned off and the reheater is no longer energized.

The electronic kotatsu board of the present invention will be explained according to examples.

1 is a decorative band that decorates the periphery of the electronic kotatsu board, and 2 is an outlet into which 100 V 50/60 Hz commercial power is input.

Reference numeral 3 indicates a cover material, and reference numeral 4 indicates a heat sink for dissipating the heat of the heater 5.

9 is a heat insulating material, 10 is a plate material, and 8 is a core material.

Reference numeral 6 denotes a switch member such as a mercury switch or a mechanical switch, and detailed examples thereof are shown in FIGS. 2 to 4.

Figure 2 shows a switch member consisting of a mechanical switch.
Reference numeral 3 denotes an operating arm, which is supported by a support metal fitting 15 so as to be rotatable in the direction AA' about an axis 14 as a fulcrum.

11 is a weight fixed to the free end of the operating arm 13.

When the switch member 6 is in the solid line position when the surface 17 is up,
6 is at the top, the operating arm rotates to the position shown by the dotted line and presses or opens the contact switching protrusion 20 of the microswitch 12.

18 and 19 indicate terminals of the microswitch 12.

3 and 4 show an embodiment in which the switch member 6 is made of a mercury switch. FIG. 3 shows a side cross section when the surface 17 is on the top surface, and FIG. 4 shows a side cross section when the surface 16 is on the top surface. The figure is shown below.

21 is a mercury switch body, 22 is mercury, 23 is a long electrode, 24 is a short electrode, and 25 is a buffer material such as moltoprene.

Figure 3 shows the mercury switch turned on, and Figure 4 shows it turned off.The difference in length between the long and short electrodes and the amount of mercury are used to form a directional switch.

In this way, it is turned on only when the front material 3 is exposed on the front surface, and automatically turned off when it is propped up or when the backing material 7 on the back side is used as the front surface.

The method of use of the present invention is that the kotatsu board is warm when the electricity is on, so when using the electronic kotatsu board, there is no risk of near-misses and it is convenient to use.

It is also possible to partially use a heater, place food that would be unpalatable if it gets cold, and place food that can get cold in a place where there is no heater 5.

In addition, when a heater is used partially, it is better to add a mark such as a pattern to the cover material so that it can be seen that the heater 5 is installed.

And once it's warmed up, you can put something that doesn't taste good there and use the heat retention function effectively.

As explained above, the plate material 10 that becomes the front material 3 and the back material 7,
It consists of a heater 5 provided close to the facing material 3, a heat sink, and a switch member 6 that is turned on when the board material 10 has the facing material 3 as the front surface, and only when the facing material 3 is the front surface. Since the switch member is turned on to energize the heater, it is automatically turned off when the heater is turned upside down or propped up, resulting in good operability and ease of use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the electronic kotatsu board of the present invention. 2 is a side sectional view showing a first embodiment of the switch member 6, FIGS. 3 and 4 are side sectional views showing a second embodiment of the switch member 6, and FIG. FIG. 4 is a side sectional view when the switch member 6 is turned off. Here, 1... Decorative obi, 3... Cover material,
7... Backing material, 10... Board material, 4...
... Heat sink, 5... Heater, 6...
It is a switch member.

Claims (1)

[Scope of utility model registration request] A heater provided with a heat sink on one side, a material provided in contact with the heat sink, a backing material provided to sandwich the front material and the heater, and a material provided to surround the front material and the backing material. and a switch member provided in series with the heater, the switch member being turned on only when the surface material is on the top side, and turned off when it is on the opposite side or on the side. An electronic kotatsu board.