JPH0421174Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a structure for attaching an illumination plate to a front door of a vending machine cabinet.

[Conventional technology]

As is well known, the front door of a vending machine has an illuminated room where samples of sales products are displayed, advertisements etc. A light plate made of transparent acrylic resin is attached. Since such an acrylic resin lighting board has a larger coefficient of thermal expansion than the steel plate that makes up the door, when it is exposed to direct sunlight at the location where the vending machine is installed, it thermally expands significantly due to the high temperature rise. The elongation caused by the thermal expansion causes deformation and cracking of the lighting board, as well as the intrusion of rainwater at the mounting area. Therefore, the lighting board is required to have a mounting structure that can cope with elongation due to thermal expansion.

However, the cabinet of a vending machine is generally rectangular box-shaped, and in this case, the illumination plate is also a flat plate, so the installation structure is relatively simple, and the thermal expansion of the illumination plate described above is It can easily deal with elongation caused by rainwater and the intrusion of rainwater. The mounting structure will be explained based on FIGS. 7 to 9.

11 is the cabinet of the vending machine, 12 is the front door, 13 is a flat lighting board attached to the opening window of the lighting room defined in the front door 2, 14 is a push button for product selection, and 15 is a product. This is the outlet. Reference numeral 16 denotes a mounting frame for an illumination plate having a U-shaped cross section, and is attached to the periphery of the opening window. Reference numeral 17 denotes a gasket having a U-shaped cross section that is fitted into the mounting frame 16, and the illumination plate 13 is attached by inserting its peripheral edge into the mounting frame 16 with the gasket 17 interposed therebetween. Patsukin 1
7 prevents rainwater from entering at the mounting portion of the lighting board 13. A vending machine equipped with this flat illumination plate and a similar structure for its mounting are disclosed in, for example, Japanese Utility Model Application Publication No. 127282/1982.

Now, in the above-mentioned lighting plate mounting structure, it has been proposed to provide a gap d between the edge of the lighting plate 13 and the bottom surface of the gasket 17 in both the vertical and horizontal directions (Fig. 8, (see figure 9),
With this configuration, the elongation of the lighting plate 13 due to thermal expansion escapes to the gap d and is absorbed.

However, in recent years, as vending machines have become more fashionable, cabinet front doors have been designed in various shapes.
Figure 4 shows an example of this fashionable front door. In the figure, 1 is the cabinet of a vending machine, and 2 is the cabinet 1 designed to curve at both left and right ends to form a curved surface.
In the front door, reference numeral 3 denotes an illumination plate made of transparent acrylic resin that is attached to the opening window of the illumination room on the front door side along the outer shape of the door. Note that 4 is a push button for product selection,
5 is a product outlet. Here, as shown in FIG. 5, the illumination plate 3 is made to have a U-shaped cross section with both left and right ends curved to match the external shape of the front door 2 described above. The mounting structure is the same as in the case of the flat lighting board explained in FIGS. 7 to 9, between the mounting frame 6 of the lighting board installed in the opening window and the periphery of the lighting board 3. A gasket 7 is interposed between the housing and the housing to prevent rainwater from entering.

[The problem that the idea aims to solve]

By the way, in the conventional structure where the lighting plate 3 having a U-shaped cross section as shown in Fig. 5 is mounted and supported in the same manner as the mounting structure of the flat lighting plate shown in Figs. 7 to 9, the following is done. Problems like this arise. That is, as proposed in the above-mentioned mounting structure for a flat lighting plate, the lighting plate 3 is supported by leaving a gap d between the entire periphery of the lighting plate 3 and the bottom surface of the packing 7 to allow the elongation due to thermal expansion to escape. Even so, the expansion of the lighting plate 3 due to thermal expansion is different because the direction of the thermal expansion elongation in the left-right direction (direction of arrow H in FIG. 6) of the plate surface of the lighting plate 3 and the gap d described above is different. It is difficult to absorb the amount by the above-mentioned gap d. Since both ends of the lighting board 3 are restricted from free movement in the left-right direction by the mounting frame 6, as a result, the lighting board 3 is deformed in such a way that the plate surface waves in the left-right direction. , and if the degree of this deformation is large, the lighting board 3 may crack due to the stress. Furthermore, even if no cracks occur, if the lighting board 3 undergoes wavy deformation in this way, a minute gap will be created between the lighting board 3 and the mounting frame 6 that cannot be absorbed by the packing 7, and the function will be lost. Rainwater, dust, etc. will enter the lighting room from outside.

Therefore, this idea was developed to prevent undue deformation of the lighting board due to the aforementioned thermal expansion while maintaining high waterproofness against rainwater etc. for the lighting board with a U-shaped cross section. The purpose of this invention is to provide a mounting structure for a lighting board.

[Means to solve the problem]

In order to achieve the above object, this invention has been developed to install a lighting board having a U-shaped cross section with curved left and right ends, which is attached to the opening window of the lighting room in the front door of the cabinet. A residual gap is formed between the edge of the lighting board and the mounting frame of the lighting board installed in the door opposite thereto to release the vertical elongation due to thermal expansion of the lighting board, and the peripheral edge of the opening window is formed. A burring portion is formed inwardly of the front door, and the end surface of the burring portion is in close contact with the surface of the lighting plate to close the gap between the lighting plate and the periphery of the opening window. It is equipped with an elastically deformable gasket.

[Effect]

According to the above means, as shown in FIG. 2, the lighting board 3 is placed between the vertical edge of the lighting board 3 and the mounting frame 6 of the lighting board installed in the door opposite thereto. A residual gap d is formed to release the elongation due to thermal expansion in the vertical direction, and a burring portion 2b is formed at the periphery of the opening window 2a toward the inside of the front door 2, as shown in FIGS. 1 and 2. In addition, an elastically deformable gasket 8 is attached to the burring portion 2b so that its end surface is in close contact with the surface of the lighting plate 3 to close the gap between the lighting plate 3 and the periphery of the opening window 2a. The thermal expansion and elongation of the lighting plate 3 in the vertical direction is absorbed by the remaining gap between the vertical edges of the lighting plate 3 and the mounting frame 6, whereas the expansion and elongation in the horizontal direction This is absorbed by the compressive deformation of the gasket 8, and reliable waterproofness can be maintained due to the close contact between the gasket 8 and the surface of the lighting board 3.

〔Example〕

1 to 3 show an embodiment of this invention, and the same members corresponding to FIGS. 4 and 5 are given the same reference numerals. That is, according to this invention, first, burring is performed inward of the front door over the entire peripheral edge of the opening window 2a of the front door 2, and a burring portion 2b having a height of about 5 mm is formed. A band-shaped gasket 8 is attached to the burring portion 2b along the periphery of the opening window 2a. This gasket 8 is made of an elastic material such as rubber, and has a hollow groove 8a formed in its longitudinal direction. On the other hand, the illumination plate 3 has its surface closely abutting the end face of the gasket 8 from the inner side of the door 2, and a presser plate 9 screwed to the mounting frame 6 of the equipment on the door side at its peripheral edge. It is supported by pressure from behind through the support. On the other hand, as clearly shown in the vertical cross-sectional view of FIG. A residual gap d is formed to allow the elongation to escape.

In the above configuration, in the installed state immediately after the illumination plate 3 is installed as shown in FIGS. The gap between the door plate and the lighting board is closed, thereby preventing rainwater, dust, etc. from entering the lighting room from the outside. On the other hand, if the temperature rises due to direct sunlight hitting the lighting board 3, and as a result a relative elongation occurs between the lighting board 3 and the front door 2 due to thermal expansion, first of all, as shown in Figure 2. As shown in FIG. 2, when the lighting plate extends in the vertical direction (in the direction of arrow V), this elongation is absorbed by the remaining gap d between the upper edge of the lighting plate 3 and the mounting frame 7. On the other hand, in response to the simultaneous elongation in the left-right direction (direction of arrow H in FIG. 1), both left and right ends of the illumination plate 3 move in the direction of arrow H, as shown in FIG. It becomes absorbed in the form of crushing. Therefore, the lighting board itself has a sixth
There is no possibility of the waving deformation as shown in the figure occurring, and since the gasket 8 is held in close contact with the surface of the lighting board 3, waterproofness is reliably maintained.

[Effect of idea]

As described above, according to this invention, as a mounting structure for a lighting board having a U-shaped cross section, the mounting frame for the lighting board is installed in the door opposite to the vertical edge of the lighting board. A residual gap is formed between the lamp plate and the lamp plate to allow vertical elongation due to thermal expansion to escape, and a burring portion is formed at the periphery of the opening window toward the inside of the front door, and the burring portion is equipped with an elastically deformable gasket whose end face is in close contact with the surface of the illumination plate and closes the gap between the illumination plate and the periphery of the opening window,
It is possible to absorb the elongation due to thermal expansion of the lighting board while maintaining high waterproofness, and reliably prevent the lighting board from being unduly deformed.

[Brief explanation of the drawing]

1 to 3 show a lighting plate mounting structure according to an embodiment of this invention, FIG. 1 is a cross-sectional view of the lighting plate mounting part, FIG. 2 is a longitudinal sectional view of the same,
Figure 3 is an explanatory diagram of the absorption of thermal expansion and elongation at the mounting part of the lighting board in Figure 1, Figure 4 is an external perspective view of the front door of the vending machine to which this invention is implemented, and Figure 5. is a diagram of the lighting plate mounting structure according to the conventional configuration shown as a cross-sectional view taken from the arrow in FIG. 4, FIG. Figure 8 is an enlarged longitudinal cross-sectional view of the illuminated plate portion of Figure 7, and Figure 9 is an enlarged cross-sectional view of the illuminated plate portion of Figure 7. It is a diagram. DESCRIPTION OF SYMBOLS 1...Vending machine cabinet, 2...Front door, 2a...Door opening window, 2b...Burring part, 3...Illumination board, 6...Illumination plate mounting frame, 8...
...Gasket, 8a...Hollow groove of gasket, d
...residual gap, H...left and right direction, V...up and down direction.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A mounting structure for a lighting plate having a U-shaped cross section with curved left and right ends, which is attached to an opening window of a lighting room in a front door of a cabinet, and the lighting plate is mounted in the vertical direction of the lighting board. A residual gap is formed between the edge of the lighting board and the mounting frame of the lighting board installed in the door opposite thereto to release the vertical elongation due to thermal expansion of the lighting board, and the peripheral edge of the opening window is formed. A burring portion is formed inwardly of the front door, and the end surface of the burring portion is in close contact with the surface of the lighting plate to close the gap between the lighting plate and the periphery of the opening window. A lighting plate mounting structure for a vending machine characterized by being equipped with an elastically deformable gasket. 2. In the lighting plate mounting structure as set forth in claim 1 of the utility model registration claim, the gasket is made of an elastic material and has a structure in which a hollow groove is formed inside the gasket along its longitudinal direction. Vending machine lighting board mounting structure.