JPS58129327A - Temperature display device - Google Patents

Abstract

PURPOSE:To display the temperature digitally by only one light source, by controlling light which passes through a plurality of optical conductors by optical switches in respose to the temperature signal. CONSTITUTION:The optical swiches 8-1-8-n are selectively controlled in response to the measured temperature signal obtained by a temperature sensor 10. The light emitted from the light source 5 of a light generating device 4 is inputted into one end of each of the optical conductors 3-1-3-n and reaches the other ends. At the other ends of the optical conductor 3-1-3-n provided at the position of a front plate 1, only the end surfaces selected by the optical switches 8-1-8-n are lighted, and the temperature is digitally displayed by dots.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature display TC filter suitable for digitally displaying temperature outdoors.

@Vertical display device K that digitally displays temperature outdoors
There are many types of Fi, including those that use high-intensity lamps, those that rotate a movable plate with numbers on it, and those that rotate a number ring.

However, these lamps have problems such as short lamp life, high power consumption, and movable parts that are prone to failure.

Friend, if you don't do enough maintenance, the dots that make up the numbers will become dull. The present invention is to omit the intermediate point of such a conventional temperature display device,
The invention will be explained below with reference to the drawings.

Figure 1 shows the basic concept of this invention.
is a round rod-shaped light guide that forms one dot, with one end located at each dot, and is made of transparent plastic.
The light passing through this light guide causes the corresponding tod to glow.

One end of the light guide is fixed to the dot part of the front board, and the other end is located at the front mounting plate (ftt4).

That is, the light generator + 411d light source (for example, Heroge 7
lamp) (5) and the light t emitted from this light source (5)
The other end of the light guide +31 is located at the focal point of the reflector (61).

Therefore, the light source (5) is
When lit, the light enters from the other end of the light guide (31) and reaches one end.

Figure 2 t! This figure shows a temperature display device configured based on the concept shown in Figure g1, in which dots #A and B forming a two-digit number and a group of dots C' that displays "℃Jf" are used to display the temperature display device TD. A case where a surface is formed is shown.

Therefore, the above three dot groups A, B, and C display, for example, 25°C.

In addition, in Figure 2, the black circle is selected and the number r2J
r5J and "℃" are shown. On the other hand, white circles are unselected dots.

FIG. 3 shows an embodiment of this invention. In FIG. 3,
IIIFi front plate e <3-”) to (3-n) are reflectors.

(7) is a power supply, (8-1) to (8-!l) are optical switches, which are provided in the middle of each light guide.
The selection is controlled by a control circuit (9) which selects the dots individually. Ql is a temperature sensor, and this temperature sensor is placed at a predetermined position outdoors to measure the outside temperature.
The circuit (91) selects and controls the optical switch by the temperature KmlJ constant signal generated from such a temperature sensor.

In other words, the display is performed in the same manner as a conventional digital temperature display device.

By the way, a temperature display device that combines a light guide, a light source, and nine reflectors as in the present invention consumes less power than the commonly used one in which lamps are arranged in a dot shape. Since there is only one, maintenance is easy and the cost required for maintenance is low.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the basic concept of this invention,
Fig. 2 is a diagram showing the surface of the temperature display device, and Fig. 3 is a diagram showing an embodiment of the temperature display device according to the present invention.
is a light source, (6) is a reflector, (7) is a power supply, (8) is an optical switch, (91 is a dot selection control circuit, and Q(l is a temperature sensor. In addition, the same or equivalent parts in the figure are They are indicated with the same reference numerals. Agent Makoto Kuzuno - Ki 1 color Ne ZQ

Claims (1)

[Claims] Made of plate-shaped glass or plastic. A front plate that is opaque except for the plurality of dots forming the display numbers, and one end of each is located at each dot.
The other end is made of transparent plastic and is located at the focal point of the reflector of a light generating device consisting of a light source and a reflector. and a plurality of round bar-shaped light guides having 7 flexibility, an optical switch provided in the middle of the light guide, a controller for selectively controlling the light switch, and a temperature measuring device for supplying a temperature measurement signal to the controller. A [display device] which is configured to digitally display the temperature IJj by the dots on the light guide.