JPS5863823A - Temperature display apparatus - Google Patents

Abstract

PURPOSE:To perform a digital display, by positioning plural optical fibers at the focal position of a reflex body of a light generator consisting of a light source and the reflecting body and controlling selectively an optical switch provided on the way to the optical fiber by a measuring signal of a temperature measring device. CONSTITUTION:One ends of optical fibers 3-1-3-n bundled plural pieces are fixed to the dotted parts of a front board 1 made of opaque laminar glass etc. A light generating device 4 is constituted by a light source 5 such as a halogen lamp and a reflecting body 6 reflecting light generated from the source 5, and the other ends of the fibers 3-1-3-n are positioned at a focal position of the body 6. Optical switches 8-1-8-n are provided on the way to the fibers 3-1-3-n and these are controlled selectively by a controlling circuit 9 selecting each dot 2. A temperature sensor 10 is arranged at the prescribed position of the outdoors and a temperature measuring signal of the sensor 10 is given to the circuit 9. In this manner, a digital display reduced the power comsumption is carried out using a single light source.

Description

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

There are various types of temperature display devices that digitally display the temperature outdoors, but some use high-intensity lamps,
Alternatively, there are 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.

Also, if maintenance is not done adequately, the dots that make up the numbers may become missing. This invention improves the problems of such conventional temperature display devices, and includes:
The invention will be explained below with reference to the drawings.

Figure 1 shows the basic concept of this invention, (1)
is a front plate made of opaque plate glass or plastic except for the dots (2) forming the numbers,
(3) is an optical fiber made up of one or more fibers, one end of which is located at each dot, and the light passing through this optical fiber causes the corresponding tod to shine.

One end of the optical fiber is fixed to the dot portion of the front plate (1), and the other end is located at the light generating device (4).

That is, the light generating device (4) is composed of a light source (for example, a halogen lamp) (5) and a reflector (R) (FLEOTOR) (6) that reflects the light emitted from the light source (5). As you can see, the other end of the optical fiber (3) is the upper 6
Located at the focal point of the self-reflector (6).

Therefore, the power from the power source (7) causes the light source (5) to
When lit, the light enters from the other end of the optical fiber (3) and reaches one end.

FIG. 2 shows a temperature display device constructed based on the concept shown in FIG. This shows the case where the surface of the display device TD is formed by.

Therefore, for example, 25°C is displayed by the three dot groups A, B, and 0. In FIG. 2, the black circle is selected and the numbers r2ir5J and r"c-
1fc is shown. on the other hand.

White circles are unselected dots.

FIG. 8 shows an embodiment of this invention, and in FIG. 3, (
1) is a front plate, (8-1) to (8-n) are reflectors, (
7) is a power source, and (8-1) to (8-n) are optical switches, which are selectively controlled by a control circuit (9) which is provided in the middle of each optical fiber and selects one dot individually. OI is a temperature sensor, and this temperature sensor (1
1 is placed at a predetermined position outdoors to measure the outside temperature, and the circuit (9) selectively controls the optical switch based on a temperature measurement signal generated from such a temperature sensor. That is, the display is performed in the same manner as a conventional digital temperature display device.

In the embodiment, an optical switch is provided for each line of one optical fiber, but it is also possible to provide one optical switch for a plurality of lines.

By the way, like this invention with optical fiber.

The temperature display device, which combines a light source and nine reflectors, consumes less power than the commonly used lamps arranged in dots, and since there is only one light source, it is easy to maintain. The cost required for this is also low.

[Brief explanation of drawings]

Figure 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. 8 is a diagram showing an embodiment of the temperature display device according to the present invention.
) is the front plate, (2) is the dot, +3) is the optical fiber,
(5) is a light source, and (6) is a reflector. (7) is a power supply, (8) is an optical switch, (9) is a dot selection control circuit, and Ql is a temperature sensor. Note that in FIG. 1, the same or corresponding parts are designated by the same reference numerals. Agent Shin Kuzuno - Figure 1 Figure 2

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 includes a plurality of optical fibers located at the focal point of the reflector of a light generating device consisting of a light source and a reflector (REF'LEOTOR), an optical switch provided in the middle of the optical fiber, and a light switch. 1. A temperature display device comprising a controller for selective control and a temperature measuring device for supplying a temperature measurement signal to the controller, the temperature being digitally displayed by dots on the optical fiber.