JPH056934Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lid for a thermos flask that displays an outline of the internal temperature on the outside while the lid is closed.

(Prior Art) Conventionally, as a method for identifying the inside of a thermos flask, a method is known in which, for example, a temperature sensing part of a mercury column thermometer, a probe of an electronic thermometer, etc. is installed to penetrate the vacuum area of the thermos flask.

In addition, a heat-sensitive color body is installed at the bottom of the lid of a thermos flask to identify the internal temperature by color change.
Utility Model Application Publication No. 52-35283, Publication of Utility Model Application No. 53-76764, Publication of Utility Model Application No. 54-37569, Publication of Utility Model Application No. 54-150160
Publication No. 57-200141, Utility Model Application No. 57-200141
There are publications such as Publication No. 200142. All of these utilize a development process in which a recess is provided in the lid of a thermos flask, and the color of a heat-sensitive coloring material affixed to the bottom of the recess changes as the temperature of the contents of the flask changes. However, there are JIS standards for thermos flasks, which require the lid to be insulated with sufficient vertical thickness (depth) to prevent the temperature of the water from dropping (to keep it warm). However, when a concave portion is formed, the thickness in the top and bottom dimensions becomes smaller, and the distance between the outside air and the air inside the bottle becomes smaller, resulting in poor insulation, or heat is radiated from the heat-sensitive coloring body. Therefore, if the diameter of the heat-sensitive colored body or recess is made small for the purpose of reducing heat radiation, this will reduce the negative effect on heat insulation, but as a result, the heat-sensitive colored body will be placed at the bottom of the dark hole. However, there is a drawback that the display area becomes dark due to the position of the display.

(Purpose of the invention) The present invention was made to eliminate these conventional drawbacks, and displays the temperature using a heat-sensitive color body located at the deep bottom that penetrates the insulating lid, which has a large vertical dimension. Despite the structure, the light rays entering from the entrance window efficiently reach the bottom and illuminate the heat-sensitive color body, making it possible to efficiently diffuse the light (color) reflected by the heat-sensitive color body to the outside. Its purpose is to provide lids for thermos flasks.

(Structure of the invention) In the present invention, the lower end is tightly attached to the mouth of the thermos flask.
In a thermos lid that is attached so that its top surface is exposed at the top of the thermos flask and is formed with large dimensions in the vertical direction, a heat-sensitive coloring body is installed at the bottom of the lid, and the heat-sensitive coloring body is installed at the bottom of the lid and passes through the lid. A transparent column extending to the top surface of the lid is bonded to the top surface of the heat-sensitive coloring body.

A column made of a transparent material may be used as the transparent column. Moreover, a tube whose wall surface is mirror-finished may be used as the transparent column.

The above configuration has a simple configuration in which a heat-sensitive coloring body is installed at the bottom of the lid, and a transparent column extending to the top surface of the lid is placed on the heat-sensitive coloring body, and the transparent column is exposed from the outside to the top surface of the lid. You can identify the internal temperature by looking at the top of the.

(Example) In FIG. 1, the lid 2 of the thermos bottle is composed of an outer lid 11 and an inner lid 12, and is an insulating lid with a sufficiently large vertical thickness (depth).
Insulation performance is specified by JIS standards, etc., and the insulation performance must be able to meet the JIS standards. Furthermore, a liquid discharge port, a liquid discharge pump, etc. (not shown) are provided. Therefore, in general, it is inevitable that thermos flasks have large lids.

A thermosensitive coloring body 14 is provided at the bottom of the lid. In this embodiment, it is attached to the upper surface of the bottom 13 with an adhesive, but it may be pierced through the bottom and exposed to the lower surface of the bottom 13.

Reference numeral 16 denotes a transparent column (transparent column) made of, for example, transparent synthetic resin, and its upper end 15 penetrates through the upper surface of the outer lid 11 and is exposed to the outside of the lid. The above-mentioned heat-sensitive color body 14 is adhered to the lower end of the transparent cylinder 16 with a transparent adhesive. Any method other than adhesion, such as coating, can be used to connect the two.

Transparent cylinder 16, avoiding the discharge port, discharge pump, etc.
In order to detour, the above-mentioned transparent cylinder may be formed in a curved manner. Further, the upper end 15 of the transparent cylinder 16 may be formed into, for example, a convex lens shape, a jewel-shaped multifaceted cut, or the like.

The lid configured as described above can be used as a thermos bottle by bringing the inner lid 12 into close contact with the mouth of the thermos bottle so that the bottom surface of the outer lid 11 and the circumferential surface or bottom surface of the inner lid 12 come into contact with the mouth of the thermos bottle body. Close and seal the mouth of the
I try to insulate it.

FIG. 2 shows another embodiment of the present invention, the basic configuration of which is almost the same as that of FIG. 1 above, except that:
The difference is that a plated tube (transparent column) 26 is used instead of the transparent column 16. Needless to say, the inside of the plated tube 26 is hollow and filled with air, and the air is transparent. Therefore, this plated tube 26 is a transparent cylinder. In contrast to the aforementioned transparent column 16 made of transparent synthetic resin, where the light is reflected by total internal reflection, in the latter case, the light is reflected by specular reflection from the plated tube 26.

In this embodiment, the inner or outer surface of the transparent synthetic resin tube was plated as a means for forming a reflective surface, but the tube itself may have a mirror surface such as a metal mirror, and any means for forming the wall surface of the tube body into a mirror surface may be used. The upper end 25 of the tube is a transparent plate that closes the tube, but as described in the embodiment of FIG. 1, the upper surface may be formed into a convex lens shape, a jewel-shaped multifaceted cut, or the like. The plated pipe 26 is a discharge port,
It may also be curved by bypassing the discharge pump or the like.

Common to FIG. 1 and FIG. 2, transparent columns 16, 26
In addition to cylindrical shapes, they can also be shaped with a non-circular cross section, such as square notes.

Throughout each example, materials used as heat-sensitive coloring materials include materials that change hue, brightness, and color depending on temperature, such as commercially available thermocolors, such as pigments, liquid crystals, etc. Therefore, those that change reflection, refraction, transmission, deflection angle, etc. can be used. Further, a reflector may be provided on the back side of the heat-sensitive color body 14 to increase the amount of reflection.

If multiple transparent columns are provided, it is also possible to display characters (including figures, the same applies below). If the color band of the thermosensitive coloring material is limited to a specific temperature band, a dedicated coloring material and transparent column can be provided for each dedicated temperature band, and characters can be displayed by providing characters at the top of the transparent column. For example, if a transparent column is provided for each of the three coloring materials, red, yellow, and blue, and the characters "high" for red, "medium" for yellow, and "low" for blue are provided at the top of the transparent column, the characters can be displayed together with the colors. If the color of the thermosensitive coloring material is displayed by shading rather than by hue change, the characters are expressed by disappearing and appearing. Similar results can also be obtained by using a filter in combination with a thermosensitive coloring material with a hue change type to block unnecessary color light.

The heat-sensitive color body 14 is completely surrounded by the outer lid 11 and the inner lid 12, and is almost like a closed room, so it must be extremely dark. However, light rays in the living room enter from the upper part 15 of the transparent cylinder 16, are totally reflected within the cylinder, and reach the heat-sensitive color body 14, illuminating it brightly. The heat-sensitive color body 14 reflects the light, and the light is again emitted from the upper end 15 into the living room. Transparent pillar is plated metal tube 26
In the case of Light is emitted from the (transparent plate) 25 into the room.

(Effects of the invention) As explained above, although the present invention has a structure in which the temperature is displayed by a heat-sensitive color body located at the deep bottom that penetrates the insulating lid with large vertical dimensions, the light rays entering from the entrance window are It efficiently reaches the bottom and brightly illuminates the heat-sensitive color body, and the heat-sensitive color body, which changes color depending on the temperature, reflects the colored light rays and efficiently radiates the light rays to the outside. can be displayed in color.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a lid showing an embodiment of the present invention;
FIG. 2 is a longitudinal sectional view of a lid showing another embodiment of the present invention. 1... Thermos flask, 2... Lid, 11... Outer lid, 12
... Inner lid, 14 ... Heat-sensitive color body, 15 ... Upper end,
16...Transparent cylinder (transparent column), 26...Plated metal tube (transparent column).

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The lower end is attached to the mouth of the thermos flask and the upper surface is exposed to the upper part of the thermos flask,
In the lid of a thermos flask with large dimensions in the vertical direction, a heat-sensitive coloring body is installed at the bottom of the lid, and a transparent column that penetrates the lid and extends to the top surface of the lid is the heat-sensitive coloring body. A temperature-distinguishable thermos lid, characterized in that it is bonded to the top surface of a thermos flask. 2 Claim No. 1 for Utility Model Registration characterized in that a column made of transparent material is used as the above-mentioned transparent column
A thermos lid that can identify the temperature listed in the section. 3. The lid of a thermos flask that can identify the temperature as set forth in claim 1 of the utility model registration, characterized in that the transparent column is a tube whose wall surface is mirror-finished.