JPH04348724A - Thermos bottle - Google Patents

Abstract

PURPOSE:To constitute the thermos bottle so that liquid level height of hot water in the thermos bottle can be confirmed without using a branch water tube, and the water level can be known visually from the whole periphery by providing an infrared-ray reflecting layer, providing a colored body as an optical separate body on the lower face of a vacuum double bottole, and providing ruggedness for scattering a beam on a transparent facing body for surrounding the vacuum double bottle. CONSTITUTION:In an inner bottle 2 formed as a vacuum double bottle, a transparent infrared-ray reflecting layer is provided, and at least a part of a facing body 3 is constituted of a transparent part 4, and in a part of its optical path, a rugged part 6 for scattering a beam is formed. Also, a colored body 5 whose upper face has a beautiful color is placed as an optical separate body in the vicinity of the inner bottle 2.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to thermos flasks, and in particular to a thermos flask that allows the height of the liquid level of hot water in the flask to be checked without using a branch water pipe, making it possible to visually know the water level from all around the flask. It is related to.

0002

[Prior Art] Generally, a branch water pipe used as a liquid level gauge in a thermos bottle indirectly measures the liquid level of the contents, but the idea of directly viewing the contents instead of indirectly is based on the present invention, for example. There is a thermos bottle whose contents can be seen, for which the inventors of 1993 filed three applications including Utility Model Application No. 63-125938. In that earlier application, in addition to being able to omit branch water pipes, the contents could be viewed directly, adding a sense of playfulness.

0003

[Problem to be Solved by the Invention] However, the liquid surface of colorless and transparent hot water is a complex mixture of surface reflections from the water surface, total reflection of transmitted light, side reflections from the container, and background light. It is difficult to confirm, and another problem is that the bottom of the container appears to be raised due to refraction. This phenomenon is a daily experience, and the human eye is fooled into thinking it is a shallow medium bottle. This invention was made in view of the conventional problems as mentioned above.
The liquid level of the contents of the thermos bottle can be viewed directly, eliminating the need for a branch water pipe, eliminating the need for background or surface reflections, and preventing the bottom of the bottle from lifting up due to water refraction and making it look shallow, while maintaining a beautiful liquid level. The objective is to obtain a thermos flask that can be colored to visually display the height of the liquid level.

0004

[Means to solve the problem]

A. Invention 1 (Claim 1) Invention 1 is a thermos flask consisting of an inner bottle with a low pressure in the space between the inner bottle and the outer bottle of the double bottle, and an exterior body surrounding the outer periphery. A transparent infrared reflecting layer is provided, a transparent part is formed in the outer package, and at least one of the transparent part of the outer package and the inner bottle is provided with an uneven part for scattering light to create a beautiful color. A colored body is placed as an optically separate body at the bottom of the medium bottle, so that the water level can be seen. B. Invention 2 (Claim 2) Invention 2 provides a thermos flask consisting of an inner bottle with a low pressure in the space between the inner bottle and the outer bottle, and an exterior body surrounding the outer periphery. A transparent infrared reflecting layer is provided on the inner bottle, a transparent part is formed in the outer package, and a colored body having beautiful colors is arranged optically separate from the lower part of the inner bottle. C. Invention 3 (Claim 3) Invention 3 is the above invention 1 and 2, wherein the beautiful color is one of the ring-shaped colors connecting red, orange, yellow, green, blue, violet, and red-violet in the chromaticity diagram. It is characterized by being one color. A. Invention 4 (Claim 4) Invention 3 is the above invention 1 and 2, wherein the beautiful color is one of the ring-shaped colors connecting red, orange, yellow, green, blue, violet, and red-violet in the chromaticity diagram. It is characterized by being a single color with some white added.

[0005]

[Effect]

A. Invention 1 (Claim 1) FIG. 4 is an optical explanatory diagram of only the inner bottle 2 of the structure of the thermos bottle shown in FIG. 1, and for ease of explanation, the structure of FIG. The middle bottle has a single-layered structure and is drawn in the shape of a cup. Eye 10 passing above the edge L of the water surface
The incident light rays A, B, C, D, and E are all, for example, pink light rays coming from the chromatic body 5 illuminated by unspecified external light (for example, indoor lighting rays or outdoor light rays), and the presence of the water surface. is displayed in pink. Such colored light rays A, B, C, D, and E are hereinafter referred to as "colored light rays." Here, among the colored light rays mentioned above, ray C comes from the edge 9 of the bottom of the medium bottle 2, and as it is refracted on the water surface, humans perceive that this ray C comes from the virtual image 9F as shown by the dotted line. , this light ray C may cause a person to have the illusion that the bottom of the medium bottle 2 is shallow.

Next, in FIG. 5, light rays a, b, c, and d passing through the wall surface below the edge L of the liquid level and entering the eye 10 are reflected by the indoor environment above, such as fluorescent lighting or from the ceiling. These are light rays originating from reflection, etc., which are totally reflected within the medium bottle 2 and emitted. Next, light rays e and f are light rays transmitted from the background of the medium bottle and emitted from the medium bottle, and are the colors of the tabletop environment, such as a brown dining table or white tableware. Therefore, the above-mentioned rays a, b, c, d, e, f are all environmental colors,
Unlike the colored rays A, B, C, D, and E mentioned above, it is not colored pink. Such rays a, b, c, d, e
, f are hereinafter referred to as "environmental rays".

[0007] In this way, with the edge L of the water level as the border, L
The light ray passing above is a pink "colored ray", and the light ray passing below L is an "environmental ray", and the two appear in different colors. This phenomenon is referred to as the “unique effect”.
It is called. Due to this unique effect, the water level in the medium bottle is clearly displayed in different colors, and the water level can be seen directly by people. These people are, for example, family members around the dining table, waitresses at a restaurant, etc., and are directly viewed by everyone around them.

However, among the above-mentioned light rays, the light ray C has the drawback of confusing human judgment, making the bottom of the bottle appear to be a virtual image 9F, making it seem higher than it actually is, and creating the illusion that the bottle is shallow. FIG. 6 shows a means to prevent humans from feeling the virtual image 9F,
A light scattering uneven portion 6 is provided on the outer periphery of the medium bottle. As the light ray C goes from the concavo-convex portion 6 near the viewer in a direction (toward 9F) away from the person, it becomes blurred and indistinct in proportion to the distance. By appropriately setting the unevenness for scattering, the virtual image 9F cannot be clearly identified, but on the other hand, the existence of the edge L of the water level near the person can be clearly identified. FIG. 7 (enlarged view) is an example of the unevenness forming the scattering portion, and details will be explained in Example 1. In addition, the aforementioned environmental rays a, b, c, d, e, f
originates from an object (e.g., a fluorescent light, a dining table) that is far away from the uneven surface 6 such as the indoor environment described above, but when that environmental light passes through the uneven surface 6 as shown in FIG. It is so far away that it is impossible to tell. This phenomenon in which the outline of a distant object becomes indiscernible is hereinafter referred to as a "distant out-of-focus effect" and will be described in detail in Example 1.

Due to the above-mentioned "unique color effect" and "distant out-of-focus effect", a clear pink color P can be seen at close range above the edge L of the water level, and as it moves away from the edge L, as shown in FIG. A fantastic pink area with unclear outline gradually appears in soft focus. However, as explained in FIG. 5, just below the edge L, an unillustrated environmental color (for example, the brown color of a dining table) can be seen, and as you move downward from this point, an unillustrated environmental color with a less clear outline appears in soft focus. You can see the color pattern. In this way, the distinction between the colors representing the water surface can be clearly seen at the edge L and in its immediate vicinity, and as you move away from the edge L, you can see a pink area representing the water surface whose outline becomes less clear in a soft-focus manner. It happens. Even when the water level is low, the appearance of the color distinction is the same as above, and in FIG. It is totally reflected at the bottom of the bottle and is ejected without being colored. Therefore, the light ray a' reflects the color of the ceiling, lighting equipment, etc. In contrast to such environmental light rays, the light ray A emitted from above the edge L originates from the color of the colored body 5 illuminated by unspecified external light rays (for example, indoor lighting rays or outdoor light rays). This is a light beam colored pink as described in the explanation of FIG. In this way, the water surface of the colorless and transparent water above the edge L appears colored, and conversely, the color of the actual colored body 5 is not visible below the edge L, and there is no difference between the upper and lower parts with the edge L as the boundary. A clear color contrast is shown.

As mentioned above, due to the different color effect, the water surface appears pink as shown in FIG. Here, "water" is originally colorless and transparent, and it is strange that the colorless and transparent water appears pink above L, but conversely, the existing colored body 5 is not visible at all below, and it does not look like magic. However, if we use the reversibility of light to explain why the pink color body 5 is not visible at all, and on the contrary, colorless and transparent water appears pink, we can use the reversibility of light as shown in Figure 4. When a light source is located at the position of a person's eyes, the light from the light source passes through the horizontal water surface shown in FIG.
(The reflected wave corresponds to, for example, an external light beam such as an indoor lighting beam or an outdoor light beam.) On the other hand, when entering the water through the side wall surface of the medium bottle 2, it is reflected by the medium bottle 2.
Since the angle of incidence on the bottom of
, b, c, d, e).

B. Invention 2 (Claim 2) Compared to Invention 1, Invention 2 does not provide the uneven portion 6 for light scattering, and does not have a soft focus effect, but is otherwise the same as Invention 1. , the drawings are omitted, the explanation given in Invention 1 is used, and the explanation of the symbols is also the same as Invention 1.
to be used.

C. Invention 3, D. Invention 4 Both relate to the colored body 5 of Invention 1 and Invention 2, and will be explained in detail in Examples 3 and 4.

[0013]

【Example】

Embodiment 1 (Claim 1) In FIGS. 1, 2, and 3, an inner bottle 2 formed as a vacuum double bottle is surrounded by an exterior body 3 to constitute a thermos flask 1. The medium bottle 2 is usually called a vacuum bottle, but a trace amount of dilute air component may remain. The medium bottle 2, which should normally be plated, is provided with a transparent infrared reflective layer (not shown) in place of the plating process, and at least a portion of the exterior body 3, preferably the entire circumference, is made up of a transparent part 4, A concavo-convex portion 6 (described later) for light scattering is formed in a part of the optical path. The inner bottle 2 has a corner 9 provided at the inner bottom to sharpen the boundary between the wall surface and the bottom surface, thereby reducing ambiguous curved portions. The colored body 5 whose upper surface has a beautiful color is the medium bottle 2.
It is placed in an optically separate body close to the bottom of the. Chromatic body 5
The inner bottle 2 and the inner bottle 2 may be in contact with each other, but they must be separate bodies (optically separate bodies) without adhesion.If water or the like is present between the two, the light rays will be transmitted through the water. The two cease to be optically separate entities. Even if there is air between the two, the air and the glass of the bottle have different refractive indexes, so the light is totally reflected and does not pass through like when water is present. Therefore, even if air is present between the inner bottle 2 and the colored body 5, the two can be considered to be optically separate bodies.

[0014] The upper part 12 and the lid 14 of the exterior body are preferably formed of a translucent material, and it is even more preferable if a larger portion of both 12 and 14 is translucent. The reason for this is that, as described in the section on operation, the colored body 5 cannot emit light by itself and must be illuminated by indoor illumination light or outdoor light. Further, it is preferable that the exterior body 3 is also formed as a transparent portion 4 around the entire circumference, and the colored body is a bright and clear color such as pink close to rose color. This transparent portion 4 may also be provided with an infrared reflective layer, and the transparent portion 4 may be lightly colored.

The uneven portion 6 for light scattering is provided on the inner bottle 2 in FIG. 1, and on the transparent portion 4 of the outer package in FIG. For the purpose of improving the infrared reflectance, a transparent infrared reflecting material 4N may be inserted into the vacuum area of the medium bottle 2 as shown in FIG. A transparent portion 4M of the exterior body may be provided, and an infrared reflective layer may be provided on the transparent portion 4M. If you do this,
The uneven portion 6 for scattering light rays is the transparent portion 4 of the exterior body.
, the transparent part 4M of the second exterior body, the medium bottle 2, and the infrared reflective material 4N provided in the vacuum area of the medium bottle.

Generally, in a vacuum region such as the inside of a thermos flask, there is no convection or conduction that causes heat transfer, and radiation is the only cause of heat transfer. Therefore, as described above, by disposing the infrared reflecting material 4N shown in FIG. 14, the only heat transfer (radiation) is blocked, and the infrared reflecting (blocking) effect can be further improved. As a result, even if it is difficult to obtain an infrared reflective material that is 99% or more comparable to the silver used for regular thermos flasks, by inserting an infrared reflective material 4N into the vacuum area, the infrared reflectance can be improved. improve and facilitate the achievement of desired performance. In this case, since it only acts like a parasol, the inner bottle may be freely designed without being restricted by the shape and dimensions, for example, to dimensions that are not sufficient. FIG. 14 shows an example in which the infrared reflective material 4N is formed in the shape of a bottomed bottle without a top.

The term "light scattering part" used in the text will be explained. (2) Generally, bubbles or white pigments (such as calcium carbonate) may be mixed into a transparent material as a material that scatters and transmits light. In this case, there is a lot of reflection of light rays, little transmission of light rays, and a lot of loss of light rays. (2) If a transparent material is provided with countless small and loose irregularities, the cut surface will have a width in the refraction angle of the light beam as shown in FIG. 7, which will cause scattering. The width α of the refraction angle is sufficient to be small enough to make the virtual image 9F indistinguishable, and the refraction angle when the inclination angle of the uneven portion (the supplementary angle formed by two consecutive surfaces) θ is 15 degrees. The calculated width α is about 10 degrees. This is an example. In this case, most of the light rays are transmitted, and few rays are lost due to reflection, so a favorable result can be obtained. In the first embodiment, the method shown in FIG. 7 was adopted. The shape of the unevenness is not limited to the shape shown in the figure. (2) For the purpose of decoration, the transparent part 4 of the exterior body 3 can be given some light scattering properties. It is also good to provide a pattern (for example, FIG. 12) with various uneven parts 6 while taking care not to cause excessive scattering. At this time, the edge L of the water level becomes somewhat unclear, but it is sufficient to provide an acceptable level of gentle unevenness. FIG. 13 shows an example in which both the concavo-convex portion 6 having a concavo-convex pattern and the colorless transparent portion 6T are mixed, and a clear water level can be seen in the transparent portion 6T.

Embodiment 2 (Claim 2) Compared to the case of Invention 1, the present invention 2 does not provide the uneven portion 6 for scattering light rays, and does not have a soft focus effect. is the same as Invention 1, and the drawings, symbols, and explanations are the same as Invention 1.
to be used.

Example 3 What is the beautiful color that colors the chromatic body 5? In the chromaticity diagram shown in FIG. It is a color that exists on the outer periphery of the chromaticity diagram.

Example 4 What is the beautiful color that colors the chromatic body 5? In the chromaticity diagram shown in FIG. It is a color with some white added, and it exists inside the outer periphery in the chromaticity diagram. For example, there are various shades of pink, light green, light blue, light purple, etc. In Examples 3 and 4 above, it is more effective to use a material that emits fluorescent color as the color.

[0021]

[Effects of the invention] ■ By making the entire periphery of the exterior body transparent, families around the dining table, waitresses in the dining room, etc. can be seen from all around.
You can know the water level. ■ Compared to ordinary light-shielded thermos bottles, it has a more open feel, and the fantastically colored water surface that appears gives you a sense of play. ■
With the branch water pipe system, it becomes impossible to distinguish when there is backlight, but
According to experiments with the present invention, the water level could be clearly identified even when there was "backlight" from a window or lighting fixture on the other side.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view of a thermos flask according to an embodiment of the present invention.

FIG. 2 is a partially cutaway sectional view of another embodiment of the invention.

FIG. 3 is a partially cutaway sectional view of another embodiment of the invention.

FIG. 4 is an explanatory diagram for explaining the operation of the present invention.

FIG. 5 is an explanatory diagram for explaining the operation of the present invention.

FIG. 6 is an explanatory diagram for explaining the operation of the present invention.

FIG. 7 is an explanatory diagram for explaining the operation of the present invention.

FIG. 8 is an explanatory diagram for explaining the operation of the present invention.

FIG. 9 is an explanatory diagram for explaining the operation of the present invention.

FIG. 10 is a partially cutaway sectional view of yet another embodiment of the present invention.

FIG. 11 is an explanatory diagram for explaining the operation of the present invention.

FIG. 12 is a perspective view for explaining an embodiment of the present invention.

FIG. 13 is a perspective view for explaining an embodiment of the present invention.

FIG. 14 is a partial cross-sectional view of still another embodiment of the present invention.

[Explanation of symbols]

2 Medium bottle 3 Exterior body 4 Transparent part 4M Transparent part of second exterior body 4N Infrared reflective material 5 Chromatic body 6　　　Uneven part 9 Corner 13 Space

Claims (4)

[Claims] Claim 1: A thermos flask consisting of an inner bottle with a low pressure space between the inner bottle and the outer bottle of the double bottle, and an exterior body surrounding the outer periphery, wherein the inner bottle is provided with a transparent infrared reflective layer. A transparent part is formed in part or all of the exterior body, and a light scattering uneven part is provided on at least one of the transparent part of the exterior body and the inner bottle, or in the vicinity thereof, and colored to have a desired color. A thermos flask whose body is optically separate from the bottom of the medium flask, and whose water level is visible. [Claim 2] A thermos flask consisting of an inner bottle with a low pressure space between the inner bottle and the outer bottle, and an exterior body surrounding the outer periphery, wherein the inner bottle is provided with a transparent infrared reflective layer. A transparent part is formed in part or all of the exterior body, and a colored body having a desired color is arranged optically separate from the bottom of the medium bottle, so that the water level can be seen. thermos. [Claim 3] The above-mentioned required colors are red, orange, and
3. The thermos flask according to claim 1 or 2, which is one of the annular colors connecting yellow, green, blue, purple, and reddish-violet. Claim 4: The required color is a color obtained by adding white to one of the annular colors connecting red, orange, yellow, green, blue, violet, and reddish violet in the chromaticity diagram. The thermos flask described in item 2.