JPS6039886Y2 - Air expansion/contraction thermometer for teaching materials - Google Patents

Description

[Detailed description of the invention] This invention relates to an air expansion/contraction thermometer for teaching materials in which colored liquid in a transparent container rises and descends in a liquid riser tube by the expansion and contraction of air. You can effectively learn about contraction by watching the colored liquid in the transparent container rise and fall in the liquid rising tube, and by holding the container in your hands (both hands), you can roughly To provide an air expansion/contraction type thermometer for use as a teaching material, which can check the body temperature of a person and also check the approximate atmospheric temperature when installed and used outdoors.

That is, the thermometer of this invention includes a transparent container that contains a colored liquid up to a predetermined level line and is large enough to be held with both hands;
The inner pipe, which has a long length extending from the inner bottom of the container to the upper part of the container mouth, is connected concentrically with a transparent outer pipe by connecting the upper and lower end pipe plugs, and between these two pipes, the upper and lower end pipe plugs are opened to the atmosphere. A liquid riser pipe having a gap for a colored liquid rise passage communicating with the hole and the liquid absorption hole, and a liquid riser pipe having an insertion hole for the liquid riser pipe, the liquid riser pipe being connected to the container so that the lower end pipe stopper is located at the bottom of the container. A container mouth sealing cap that is fixed upright on the mouth part, and a temperature scale that is arranged and fixed on the front side of the upwardly extending part of the container mouth part of the liquid riser tube, which has a see-through part with a scale line that allows you to see the degree of rise of the colored liquid. In an embodiment, the upper end pipe plug of the liquid riser pipe has a tank portion for receiving colored liquid overflowing from the end of the pipe, and a temperature scale plate is provided. Another feature is that the transparent part is formed of a semi-cylindrical plastic lens with a plastic bottom shaped like a semi-cylindrical bulge at intervals between scale lines.

Hereinafter, one embodiment of this invention will be described with reference to the drawings. In the drawing, 1 is a transparent container of a size that can be held with both hands and contains a colored liquid W up to a predetermined level line 1a, and has an upwardly protruding opening. It has part 2.

3 is a rising pipe for the colored liquid W, and this liquid rising pipe 3 includes an inner pipe 4 having a long length extending from the inner bottom of the container to above the container mouth 2, a transparent outer pipe 5, and an upper end pipe. Stopper 6
and a lower end pipe plug 7 concentrically connected to each other, and between the inner and outer vibrators 7 is a colored pipe that communicates with the atmosphere opening hole 6a of the upper end pipe plug 6 and the liquid suction hole 7a of the lower end pipe plug 7. A rising passage gap G for the liquid W is formed.

The upper end cap plug 6 has a tank portion 16 for receiving the liquid overflowing from the pipe end when the colored liquid W comes out from the upper end of the pipe.

Reference numeral 8 designates a container mouth sealing cap that is screwed onto the container mouth 2 and has an insertion hole 9 for the liquid riser tube 3 and a liquid injection hole 11 into which a sealing stopper 10 is press-fitted. is fixed upright to the container opening 2 so that the lower end pipe stopper 7 is positioned at the inner bottom of the container as shown in the figure.

Reference numeral 12 denotes a temperature scale plate arranged and fixed on the front side of the portion of the liquid riser tube 3 extending upward from the container mouth 2 (the scale plate projecting tongue piece 12a is inserted into the cap groove 8a from above, and the scale plate A see-through section 14 with scale lines 13 for viewing the degree of rise and fall of the colored liquid W is provided at the upper rear tube holding section 12b (which is fixed by holding the liquid riser tube 3).

In the case of this embodiment, the see-through section 14 is formed of a plastic-molded semi-cylindrical lens 14a which is bulged in a semi-cylindrical shape at each interval between the scale lines 13, so that the degree of rise of the colored liquid W can be observed under magnification from the front. It is now possible to do so.

The entire temperature scale plate 12 is integrally molded with transparent acrylic resin or the like, and lines are attached to both side surfaces of the transparent part 14 formed as a kamaboko lens 14a so as to branch from each kamaboko lens part. A plurality of Oda-shaped bulges 15 associated with each other at 15a are provided for decorative and gaming purposes.

When the user holds the container 1 with both hands, the air sealed in the container 1 is warmed by body temperature and expands. Due to this air expansion, the colored liquid W contained in the container 1 rises. Since the liquid is pushed up through the passage gap G in the tube 3 to the position of the transparent part 14 of the temperature scale plate 12, by observing the water head at the rising limit of the rising time of this liquid pushing up with the scale line 13 of the scale plate transparent part 14, the approximate value can be determined. You can check your body temperature.

Furthermore, if the thermometer of this invention is installed outdoors, the sealed air inside the container will be warmed by direct sunlight, etc., and the colored liquid W will rise in the liquid riser tube 3 with the same effect as in the body temperature measurement described above, so approximately The atmospheric temperature of can be found in the same way.

Since the air expansion/contraction type thermometer of this invention is similar to the one described above, learning about the expansion/contraction of air can be effectively learned by watching the colored liquid in the transparent container rise and fall in the liquid riser tube. In addition, by holding the container in the person's hands (both hands), it is possible to check the approximate body temperature, and if it is installed outdoors and used, it is also possible to check the approximate atmospheric temperature. It has excellent practical effects as an air expansion/contraction thermometer for teaching materials.

In addition, if the pipe plug at the upper end of the liquid riser pipe has a tank part that receives colored liquid overflowing from the pipe end, salt leakage of colored liquid from the upper end of the pipe due to high temperature heating such as when installed outdoors is prevented. and the transparent part with the scale lines of the temperature scale plate is formed of a semi-cylindrical lens with a plastic bottom shaped like a semi-cylindrical bulge at intervals between the scale lines.
Another advantageous effect of the embodiment is that the rising liquid in the rising tube can be easily observed under magnification from in front of the scale plate.

[Brief explanation of the drawing]

FIG. 1 is a front view of an air expansion/contraction type thermometer according to an embodiment of the invention, and FIG. 2 is a central vertical cross-sectional view taken along line 1--2 in FIG. W...Colored liquid, 1...Transparent container, 1
a...Level line, 2...Container opening, 3
...Liquid riser pipe, 4...Inner pipe, 5
...Outer pipe, 6...Top end pipe stopper,
6a...Atmospheric release hole, 7...Lower end pipe plug, 7a...Liquid absorption hole, G...Gap for ascending passage for colored liquid, end... ... Container mouth sealing cap, 9 ... Liquid riser tube insertion hole, 10 ...
・Sealing plug, 11... Liquid injection hole, 12...
Temperature scale plate, 13...Graduation line, 14...
- Transparent part, 16... Tank part of the upper end pipe plug.

Claims (3)

[Scope of utility model registration request] (1) A transparent container of a size that can be held with both hands to contain colored liquid up to a predetermined level line position, and a transparent inner pipe with a long length that extends from the inner bottom of the container to above the container mouth. a liquid riser pipe which concentrically connects two outer pipes with upper and lower end pipe plugs, and forms a rising path gap for a colored liquid communicating with the atmosphere vent hole and the liquid suction hole of the upper and lower end pipe plugs between the two pipes; A container opening sealing cap that has an insertion hole for the liquid rising tube and fixes the liquid rising tube upright to the container opening so that the lower end pipe stopper is located at the bottom of the container, and a scale line that shows the degree of rise of the colored liquid. An air expansion/contraction thermometer for teaching materials, comprising a temperature scale plate arranged and fixed in front of an upwardly extending portion of a container mouth of a liquid riser tube. (2) The air for teaching materials according to claim 1 of the utility model registration claim, characterized in that the upper end pipe plug of the liquid riser pipe has a tank portion for receiving colored liquid overflowing from the end of the pipe. Expansion/contraction thermometer. (3) The teaching material as set forth in item 1 of the utility model registration claim, characterized in that the transparent portion of the temperature scale plate is formed of a plastic-molded kamaboko lens that is bulged in a kamaboko shape at intervals between scale lines. Air expansion and contraction type thermometer.