JPS628260Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This idea relates to ceiling materials.

[Background technology]

Traditionally, ceiling materials for Japanese-style rooms have been made of long rectangular decorative plywood with a decorative material such as wood veneer or decorative paper, and a frame-shaped back frame attached to the back of the decorative plywood. ing. However, due to the difference in insulation properties (thermal flow resistance) between the part where the back crosspiece is attached and other parts, there is a temperature difference on the surface, and as a result, there is a lot of dirt and dust on the surface of the decorative plywood other than the part where the back crosspiece is attached. There was a problem that smoke, etc. had adhered to the structure, and the traces of the back rail were visible. In particular, the traces of the horizontal crossbeams on the back crossbeams, which are perpendicular to the longitudinal direction of the ceiling material, were becoming white and conspicuous, detracting from the beautiful appearance unique to the Japanese style.

In order to solve this problem, it has been proposed to interpose a good thermally conductive material such as metal foil between the back rail and the decorative plywood (Japanese Utility Model Publication No. 46-21405).

However, since the entire surface of the decorative plywood is coated with good heat conductive material, and there is good heat conductive material even in the areas where there is no back crosspiece, the temperature can be lowered even to the areas where there is no back crosspiece, making the temperature distribution more uniform. low. Therefore, the effect of preventing the rear crosspiece from being captured is low. Moreover, since the material with good thermal conductivity is provided even in the part where there is no back crosspiece, there is a problem that the amount of the material with good heat conduction increases and becomes expensive.

[Purpose of invention]

The purpose of this invention is to provide a ceiling material that can satisfactorily prevent the reflection phenomenon of the back rail that occurs due to changes over time after construction, and that can be manufactured at low cost by reducing the amount of materials used.

[Disclosure of invention]

The ceiling material of this invention includes a back frame framed in a rectangular shape, a decorative plywood stretched on the surface of the back frame, and a good heat conductive material interposed between the back frame and the decorative plywood. This good heat conductive material is provided only in a portion of the back rail, or only in this portion and the periphery of the back rail.

According to the configuration of this invention, since a good heat conductive material is interposed between the back crosspiece and the decorative plywood, the temperature of the surface of the back crosspiece that comes in contact with the decorative plywood approaches the temperature of the back surface of the decorative plywood. . Therefore, local temperature differences on the surface of the decorative plywood are reduced, and the appearance of the back crosspiece due to differences in the adhesion of dust and the like is prevented. In this case, since the good heat conductive material is provided only in the area where the back rail is located or only in this area and its vicinity, the temperature does not drop to the area where there is no back rail, and when it is provided on the entire surface of the decorative plywood. In comparison, the effect of making the temperature distribution uniform is better.
Therefore, the effect of preventing the rear crosspiece from being reflected is good. In addition, because the material with good thermal conductivity is not provided on the entire surface but only on the necessary parts, less materials are used and manufacturing is possible at low cost.

Embodiment An embodiment of this invention is shown in FIGS. 1 to 3. In the figure, 1 is a frame-shaped back crosspiece, and a long rectangular decorative plywood board 2 is pasted on the surface thereof. The back crosspiece 1 is a vertical crosspiece 1a along both longitudinal edges of the decorative plywood 2.
, and a large number of horizontal bars 1b which interconnect these vertical bars 1a. The decorative plywood 2 has a surface decorated with a wooden veneer, decorative paper, or the like. A resin sheet 3 is loosely laid over the entire back surface of the decorative plywood 2, and is sandwiched between it and the back crosspiece 1. The resin sheet 3 is provided with a metal laminate portion 4, which is a good heat conductive material, in the portion sandwiched between the back crosspieces 1 and in the vicinity thereof. The metal laminate portion 4 is formed of metal foil or metal powder. Aluminum, tin, copper, and other metals can be used as the metal foil and metal powder. Acrylic, polyester, soft vinyl chloride, etc. are used for the resin sheet 3.

With this configuration, the decorative plywood 2 of the back frame 1
The temperature of the contact surface approaches the temperature of the back surface of the decorative plywood 2 due to the good thermal conductivity of the metal laminate portion 4 of the resin sheet 3. Therefore, the local temperature difference on the surface of the decorative plywood 2 is reduced, and the reflection of the back crosspiece 1 due to differences in the adhesion of dust and the like is prevented. In addition, in the portion of the decorative plywood 2 where the back crosspiece 1 is not provided, a sealed air layer is formed between the decorative plywood 2 and the resin sheet 3, improving heat insulation. Therefore, together with the provision of the metal laminate part 4, the surface temperature can be made even more uniform,
It is possible to completely prevent the rear crosspiece 1 from being reflected.

Since the metal laminate portion 4 is provided only in the area where the back crosspiece 1 is located and its vicinity, the temperature does not drop to the area where the back crosspiece 1 is not present, resulting in a more uniform temperature distribution compared to when it is provided over the entire surface of the decorative plywood 2. The effect of conversion is good. Therefore, the effect of preventing the rear crosspiece 1 from being photographed is good.
Further, since the metal laminate part 4 is not provided on the entire surface but only in the necessary parts, less materials are used and manufacturing can be done at low cost.

4 and 5 show other embodiments. In this example, a metal portion 5 is provided as a good heat conductive material on the surface of the horizontal rail 1b of the back rail 1 that is in contact with the decorative plywood 2. The metal portion 5 is embedded in a corrugated recess provided in the horizontal beam 1b, but its shape is not particularly limited, and may be provided, for example, in the shapes shown in FIGS. 6A to 6C. The rest of the structure is the same as the ceiling material shown in FIG. With such a configuration, because of the metal portion 5 having good thermal conductivity, there is almost no temperature difference between the back surface of the decorative plywood 2 and the contact portion of the horizontal crosspiece 1b with the decorative plywood 2, and the image of the horizontal crosspiece 1b is reduced. is prevented.

[Effects of the invention] As described above, the ceiling material of this invention has a good heat conductive material interposed between the back rail and the decorative plywood, so the temperature of the contact surface of the back rail with the decorative plywood decreases. The temperature approaches the back side of the decorative plywood. Therefore, local temperature differences on the surface of the decorative plywood are reduced, and the appearance of the back crosspiece due to differences in the adhesion of dust and the like is prevented. In this case, since the good heat conductive material is provided only in the area where the back rail is located or only in this area and its vicinity, the temperature does not drop to the area where there is no back rail, and when it is provided on the entire surface of the decorative plywood. In comparison, the effect of making the temperature distribution uniform is better. Therefore, the effect of preventing the rear crosspiece from being reflected is good. Furthermore, since the material with good thermal conductivity is not provided on the entire surface but only on the necessary parts, less materials are used and the product can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of this invention, Fig. 2 is a cross-sectional view of the part with the horizontal bar, Fig. 3 is a cross-sectional view of the part without the horizontal bar, and Fig. 4 is the other part. FIG. 5 is a longitudinal sectional view thereof, and FIG. 6 is a partial sectional view of a modification of the horizontal beam. 1...Back rail, 1a...Vertical rail, 1b...Horizontal rail, 2
... Decorative plywood, 3... Resin sheet, 4... Metal laminate part (good heat conductive material), 5... Metal part (good heat conductive material).

Claims (1)

[Scope of utility model registration request] It comprises a back frame framed in a rectangular shape, a decorative plywood stretched on the surface of the back frame, and a good heat conductive material interposed between the back frame and the decorative plywood, and this good heat conductive material , a ceiling material provided only in the area where the back rail is located or only in this area and around the back rail.