JPH0143777Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heat generating surface switching display device for a planar heat generating device such as an electric carpet or a floor heater.

In recent years, various electric carpets and the like have been proposed in which the heat generating surface can be switched between full heating and half heating as appropriate, mainly from the viewpoint of energy conservation. This switching device generally
It consists of a slide switch built into the casing of a cord connecting member that is fixed to a corner or one side of an electric carpet. Since the status is checked, it is difficult to tell whether the room is fully heated or partially heated when the room is dark or from a distance, which is inconvenient.

This idea was devised in view of the above-mentioned drawbacks of the conventional heating device. An object of the present invention is to provide a switching display device.

Hereinafter, embodiments of this invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a planar heating device, for example, an electric carpet 2, equipped with a heating surface switching display device 1 according to this invention. It is now possible to switch to either "heating" or "left side heating." The heating surface switching display device 1 includes a casing 3 having a display window 4 on the top surface, as illustrated in FIG. This casing 3 actually consists of an upper lid and a lower lid that form one box, and these lids are fixed, for example, at the corners of the electric carpet 2 so as to sandwich the electric carpet 2, and the casing A female connector (not shown) for inserting a cord plug 5 extending from the not-shown temperature controller side is provided on the side surface of 3. Note that a transparent cover glass is fitted into the display window 4. Inside the casing 3 is an electric carpet 2.
Slide switch 7 to switch to the above-mentioned heating state
A light source 8 that emits light toward the display window 4, and a light blocking means 9 that brings the display window into a "fully open" or "half open" state in conjunction with the switching operation of the slide switch 7 are provided. In this case, the slide switch 7 is placed horizontally, and its operation knob 10
protrudes from the side of the casing 3. Further, as the light source 8, a cylindrical energization indicator lamp is used. In this embodiment, the light shielding means 9 includes a substantially U-shaped plate body 11 having two shielding plates 12a and 12b arranged parallel to each other, as shown in FIG. It includes a connecting plate 14 that is connected to the rear end and has a through hole 13 at an end bent into an L shape, and the through hole 13 is connected to the operation knob 10.
It is attached to the slide switch 7 by fitting it into the slide switch 7. Note that the distance between the shielding plates 12a and 12b is substantially wider than the opening width A of the display window 4;
Moreover, the plate width B of each shielding plate is larger than A/2. In addition, the slide pitch of the operation knob 10 is
It is considered to be approximately A/2.

Next, the operation of this invention will be explained with reference to FIG. 4. Figure 4a shows the state when the slide switch 7 is switched to "full heating". At this time, each shielding plate 12a, 12b is located on both sides of the display window 4, and the display window 4 is fully opened. becomes. Therefore, the entire window surface of the display window 4 is irradiated with light from the light source 8. On the other hand, when the slide switch 7 is switched from the state shown in FIG. 4a to the right side to set the "right half heating" mode, the left half of the display window 4 is covered by the shielding plate 12a, as shown in FIG. 4b. Therefore, only the right half of the display window 4 is irradiated with light from the light source 8. On the other hand, when the slide switch 7 is switched from the state shown in FIG. 4a to the left side to set the "left side half heating" mode, the right half of the display window 4 is covered by the shielding plate 12b, as shown in FIG. 4c. Only the left half of the display window 4 is illuminated with light from the light source 8.

In the above embodiment, the substantially U-shaped plate main body 11 having the shielding plates 12a and 12b is used as the light shielding means 9, but the invention is not limited to this. The frame may have a punched hole of a size that corresponds to the size of the frame. Further, the slide switch 7 may be arranged vertically. Of course, in this case, the end of the connecting plate 14 is not bent into an L-shape as described above, but is extended straight. Furthermore, slide switch 7
A rotary switch can also be used instead. In that case, it is preferable to form the display window 4 and a fan-shaped shield that selectively opens the display window 4 fully or partially.

As is clear from the above description of the embodiment, according to this invention, the display window illuminated by light from the light source can be brought into the "fully open" or "half open" state in conjunction with the switching operation of the heat generating surface changeover switch. By doing so, it is easy to know the heating status even from a distance, whether it is "full heating" or "half heating", and in the case of half heating, whether it is "right half" or "left half". can. It is also extremely practical, as it allows you to check the heating status even if the room is dark.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an electric carpet equipped with the heat generating surface switching display device of this invention, FIG. 2 is a sectional view of the main parts of the heat generating surface switching display device, and FIG. 3 is an exploded perspective view of the main parts of the device. Figures 4a, b, and c are explanatory diagrams of the operation of the device. In the figure, 1 is a heating surface switching display device, 2 is an electric carpet, 3 is a casing, 4 is a display window, 7 is a slide switch, 8 is a light source, 9 is a light shielding means, 10
is the operation knob, 11 is the plate body, 12a, 12
b is a shielding plate, 13 is a through hole, and 14 is a connecting plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A casing that is attached to a corner or one side of a planar heating device that can be switched between full heating and half heating, and has a display window opened on the top surface,
Inside the casing, there is provided a switch for switching the heat generating surface of the planar heating element, a light source for irradiating light onto the display window, and a light for switching the display window to a fully open or half open state in connection with the switching operation of the switch. In the heating surface switching display device for a planar heating device, the light shielding means has a plate body that is connected to the operation knob of the switch and slides therewith, and the plate body has a , a pair of shielding plates are formed that are arranged at a distance substantially wider than the opening width of the display window, and when the opening width of the display window is A, the width of the shielding plate is A/2. A heating surface switching display device for a planar heating device, characterized in that the heating surface switching display device is substantially larger and the slide pitch of the operation knob is A/2.