JPH0353256Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a display device for audio equipment, etc.

Conventional configurations and their problems In recent years, various FL display tubes have been used to improve the operability of audio equipment and to accommodate the diversification of designs. In this case, a decorative plate with a transparent display window is generally used on the front of the device, but if you look directly at the FL display tube through the see-through window on the front panel, you will be able to see the inside of the FL display tube.
Usually, a lightly colored semi-transparent filter is installed between the plaque and the FL display tube, and the design is processed so that only the letters on the FL display tube are visible.
However, if the plaque and filter are in close contact with each other, light interference will cause moiré, making it difficult to see the displayed characters on the FL display tube, so it is necessary to provide a gap between the plaque and the filter.

The following is a first explanation of such conventional display devices.
This will be explained using FIGS. FIG. 1 is an external perspective view, FIG. 2 is an exploded perspective view of the main part, and FIG. 3 is a sectional view of the main part. The FL display tube 6 is soldered to an operation circuit board 7 installed in the front panel 2 of the audio device 1. On the front panel 2,
an FL display tube transparent window 2c through which the FL display tube 6 can be seen;
There are also two inner walls connected in the thickness direction, that is, a first inner wall 2b for attaching the filter 5 and a second inner wall 2a for attaching the decorative plate 4. The filter 5 has double-sided tape 5a attached to both ends of the back side.
It is pasted on the first inner wall 2b through. The decorative plate 4 made of transparent plastic leaves a transparent FL display tube viewing window 4a, the back side is colored by printing, etc., and is fixed to the second inner wall 2a via double-sided tape 4c affixed to the colored part 4b. Ru. Note that 3 is an operation button.

In this case, as shown in FIG. 3, since the filter 5 is securely fixed to the first inner wall 2b with the double-sided tape 5a, the filter 5 and the decorative plate 4 do not come into close contact with each other, leaving a gap A between them. As a result, it is possible to prevent the occurrence of a moiré image as shown at 8 in FIG. 4.

However, in the above-mentioned conventional configuration, since the double-sided tape 5a was attached to the filter 5, this caused a significant cost increase in terms of the unit price of parts and the number of installation steps. Furthermore, when the mount of the double-sided tape 5a is removed, the operator's fingerprints are left on the surface of the filter 5, and it takes a lot of man-hours to wipe them off.

Purpose of the invention This invention solves the above-mentioned conventional problems.
With a simple configuration, the purpose is to prevent moiré from occurring between the filter and the decorative plate, and to significantly reduce costs.

Structure of the invention The present invention has an FL display tube on the back side and a filter and a plaque on the front panel.A hook for inserting the filter is integrally provided around the window where the filter is attached on the front panel, so that the filter can be inserted between the filter and the plaque. A gap is provided to prevent the two from coming into close contact and causing moiré.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention is shown in FIGS. 5 and 6 a and b.

As shown in FIG. 5, there is a space between the lower part of the second inner wall 2'a for attaching the decorative plate of the front panel 2' and the back surface and the first inner wall 2'c for attaching the filter so that the thickness is less than the thickness of the filter 5. A clipping claw 2'd is integrally provided so that a large gap E is created. Other than the filter 5 and the clipping claw 2'd at the lower part of the second inner wall 2'a of the front panel 2', the other parts are the same as those of the conventional example, so a detailed explanation will be omitted. Further, in FIG. 5, for convenience of explanation, the decorative plate 4 is not shown.

Due to the above configuration, when attaching the filter 5, the lower part of the filter 5 should be aligned with the clipping claw 2'd provided at the lower part of the second inner wall 2'a of the front panel 2. By inserting the filter 5 so that it is sandwiched between the inner walls 2'b, the decorative plate 4
A gap D is ensured between the filter 5 and the filter 5 as shown in FIG. 6a.

Furthermore, even if the filter 5 is tilted as shown in FIG. 6b and the upper end surface of the filter 5 comes into close contact with the decorative plate 4, the moiré pattern will not occur because it is not a surface contact but a line contact.

Effects of the invention According to the invention, by simply providing a tab for inserting the filter on the front panel, it is possible to easily and reliably secure the gap between the decorative plate and the filter. is also unnecessary,
In addition, there are fewer opportunities for workers to touch the surface of the filter, and the task of wiping off fingerprints can be omitted, leading to significant cost reductions.

[Brief explanation of drawings]

Figure 1 is an external perspective view of conventional audio equipment.
Fig. 2 is an exploded perspective view of the main parts of the conventional example, Fig. 3 is a sectional view of the main parts of the conventional example, and Fig. 4 is a front view of the main parts of the conventional example.
FIG. 5 is an exploded perspective view of a main part of an embodiment of the present invention, and FIGS. 6a and 6b are sectional views of main parts of the same embodiment. 1...Audio equipment, 2...Front panel,
2'a... second inner wall, 2'b... first inner wall,
2'd...claw, 4...decor plate, 5...filter, 6...FL display tube, 7...operation circuit board.

Claims (1)

[Scope of utility model registration request] A front panel having the FL display tube see-through window is arranged in front of the FL display tube, and first and second inner walls extending in the thickness direction are formed around the FL display tube see-through window of the front panel, and A filter is installed along the first inner wall near the display tube, a decorative plate having a transparent FL display tube viewing window is installed along the second inner wall, and the filter is installed along the first and second inner walls of the front panel. A display device characterized in that a tab is integrally provided in a portion located in the middle of an inner wall, the filter is sandwiched between the first inner wall and the tab, and a gap is provided between the filter and the decorative plate.