JPH075281A - Illumination mechanism with multiple buttons - Google Patents

Abstract

PURPOSE:To obtain an illumination mechanism with small light leak and shading difference at the separation boundary when a ring shape illumination part sepa rated multiplly is used for single illumination or combination of illuminations. CONSTITUTION:The mechanism is constituted of a plurality of split buttons 11, an ornament part 21 having a ring shape illumination part 22 surrounding the buttons 11, a panel and a base plate 28 having a light source 29. The button 11 is provided with light shield walls at the adjacent boundaries and is formed integrally with a frame 13 via a hinge shape rib 12. To the ornament frame, a light guide frame 24 of the ring shape illumination part is connected and slits 27 are provided at the adjacent opposite of portions of the buttons 11 to fix the buttons 11 and the ornament part 21 to the panel and the light sources are arranged opposite to each other. The surface forming the slits is coarsened by matt treatment, the hinge shape rib 12 is formed in U-shape and the horizontal part connecting the both vertical parts of the rib 12 is so sized as to be positioned below the luminous part of the light source.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Video tape recorder (VTR)
The present invention relates to a button illumination mechanism for electronic devices.

[0002]

2. Description of the Related Art The structure of a conventional illuminated button is shown in FIGS. In the figure, a button 1 is connected to a connecting portion 3 via a hinge 2. A translucent sign plate 4 is attached to the button 1, and a connecting portion 3 is screwed or fused to the panel 5. A holder 7 and a light emitting element (LED) 8 as a light source are attached to the substrate 6 and are arranged so as to face the sign plate 4.

By the way, in order to prevent light leakage from the light source, the panel 5 and the holder 7 are provided with light-shielding walls 5a and 5a, respectively.
7a is provided. In addition, 1a is a pressing portion of the switch 9.

[0004]

In recent years, electronic devices have been reduced in size, and various restrictions have been imposed on the design space inside the housing. In particular, the buttons for operating devices tend to be small and integrated, and the light sources that illuminate the buttons are close to each other, so illuminating the corresponding button also causes the adjacent button to be illuminated due to light leakage. There is. Therefore, it is indispensable to provide the light shielding wall. However, when the ring-shaped light emitting portion is divided into a plurality of pieces and the button corresponding to the divided light emitting portion is pressed to emit light as in the embodiment of the present invention, the ring light emitting portion is emitted. In order to prevent light leakage to the adjacent light emitting part on the divided boundary surface, and continuous lighting without interruption on the adjacent boundary surface when multiple buttons are simultaneously pressed to connect and emit light, that is, visual It is a contradictory problem to obtain a lighting for the issuing department without any discomfort. Further, there is a problem that the hinge for connecting and holding the button when it is lit blocks a part of the light source, and it is reflected as a shadow from the outside.

[0005]

Therefore, in the present invention, a plurality of buttons divided in a circle, an ornament having a ring-shaped light emitting portion surrounding the plurality of buttons, a panel, and a light source are provided. The button is provided with a light-shielding wall on the boundary surface adjacent to each other, and is integrally formed with the frame through a hinge-shaped rib, and the light guide frame of the ring-shaped light emitting portion is provided on the accessory. The slits are formed in the adjacent facing portions of the plurality of buttons while being connected to each other, so that the plurality of buttons and the accessory are attached to the panel and the light source is disposed so as to face each other.

Further, the surface on which the slits are formed is roughened by a satin finish to diffusely reflect light and prevent light leakage. Further, the hinge-shaped rib is formed in a U shape, and the horizontal portion connecting both vertical portions of the U-shaped rib is set to a size located below the light emitting point of the light source, whereby the rib is formed. The shadow to the outside was eliminated.

[0007]

With the above-mentioned structure, when a single button is pressed, the corresponding divided issuing units of the ring-shaped issuing unit are illuminated visually without any light leakage to the adjacent issuing units, or a plurality of them are illuminated. When the above buttons are simultaneously pressed, the corresponding plurality of divided issue units adjacent to each other are illuminated continuously and visually with no break at the boundary surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of main parts, FIG. 2 is a partial sectional view, FIG.
FIG. 4 is an external front view of the device, and FIG. 5 is a schematic view of a light emitting unit when a button is operated.

In the figure, reference numeral 11 denotes a button integrally formed of resin on a frame 13 via a hinge-shaped rib 12, and four buttons 11 are connected in the figure. Each of the buttons 11 has a light-shielding wall 14a on a surface facing each other and the light-shielding wall 14a.
Light-shielding walls 14b, 1 on the boundary surface with the buttons adjacent to both sides of the
4b is provided. That is, as shown in FIG. 3, the light-shielding wall 14 in the case of four consecutive buttons has three light-shielding walls 1 adjacent to each other.
4a, 14b, 14b are formed to prevent light leakage to other parts. Reference numeral 15 is a stroke regulating projection, 16 is a switch (described later) pressing portion, 17 is a position regulating projection,
Reference numeral 18 is a mounting through hole, and 19 is a positioning through hole.
A display mark or the like may be appropriately printed on the button 11. With the above configuration, the other link button body 20 of the present invention is formed.

Reference numeral 21 is an ornament having a light guide frame 24 in which a ring-shaped light emitting portion 22 and a ring-shaped light guide portion 23 are integrally formed. The ornament 21 has a mounting through hole 25 and a positioning projection 26. Are formed. Reference numeral 27 denotes a slit which prevents light from leaking to an adjacent portion. The slit 27 is subjected to a satin surface treatment to roughen the surface to further improve light leakage prevention.

28 is a light emitting element 29, 29 and a switch 3
Printed circuit board with 0 and 31 attached, and mounting holes 3
2. A through hole 33 for attachment to the front panel 35 and a notch 34 are appropriately provided.

Next, when assembling the components of the present invention,
The accessory 21 is fitted to the other button body 20. At this time, the fitting 21 is positioned by fitting the protrusion 26 of the fitting 21 into the through hole 19 of the other link button body 20. This is attached to the front panel 35, and the printed circuit board 28
Attach (see Figure 2). At that time, through holes 25, 18, 3
2 is positioned on a protrusion (not shown) of the front panel 35 in a skewered shape. For fixing to the front panel 35, the notch 34 and the through hole 33 of the printed board 28 are used.

By the way, as shown in FIG. 2, when the assembly is completed, the dimension H from the printed board 28 to the horizontal portion 12a of the U-shaped hinge rib 12 is determined by the light source 29a of the light emitting element 29.
It is designed to be placed below. By doing so, the U-shaped rib 12 does not cast a shadow on the light emitting portion 22. Further, by forming the slit 27 of the light guide portion 23 in an inverted V shape, basically, the purpose is to divide light leakage (reflection of light) to an adjacent portion.
As shown in FIG. 5 (b), when two or more points are connected and lit, the light is guided to the light emitting portion P point so that no discontinuity of light at the connecting point P or an extreme gray level difference is generated. It also has a role.

Further, by the satin surface treatment applied to the surface of the V-shaped slit 27, diffuse reflection of light is caused to occur, as shown in FIG.
In the case of the single lighting shown in (a), the effect of dividing light for preventing light leakage to the adjacent portion is supplemented. Further, the collar portion 11a provided on the button 11 has a function of blocking direct light from the light source 29a of the light emitting element 29 which is visible from a gap when the decorative frame 21 and the button 11 are attached.

[0015]

According to the present invention, the U-shaped rib is located below the light source, and the ring-shaped light emitting portion surrounding the plurality of buttons formed in a small space is divided. , If the divided light emitting section is to emit light independently,
It is possible to prevent light from leaking to an adjacent portion and to perform good illumination without splitting light or causing an extreme difference in light and shade at the connecting portion even when a plurality of divided light emitting portions are connected and emit light.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a partial sectional view of the present invention.

FIG. 3 is a rear view of the component of the present invention.

FIG. 4 is a front view of the device of the present invention.

FIG. 5 is a schematic view of a light emitting unit of the present invention.

FIG. 6 is an external perspective view of a button of a conventional example.

FIG. 7 is a sectional view of a conventional example.

[Explanation of symbols]

 Reference Signs List 11 buttons 12 hinge-shaped ribs 14 light-shielding wall 21 ornaments 22 light emitting section 24 light guide frame 27 slits 28 printed circuit board 29 light emitting element 35 panel

Claims (3)

[Claims] 1. A plurality of buttons dividedly formed in a circle, an accessory having a ring-shaped light emitting portion surrounding the plurality of buttons, a panel, and a substrate provided with a light source,
The button is provided with light-shielding walls on the boundary surfaces adjacent to each other, and is integrally formed with the frame through a hinge-shaped rib, and the light guide frame of the ring-shaped light emitting portion is connected and formed with the accessory. An illumination mechanism for multiple buttons, characterized in that slits are provided in adjacent portions of the buttons, the plurality of buttons and the accessory are attached to a panel, and the light sources are arranged to face each other. 2. The illumination mechanism for multiple buttons according to claim 1, wherein the slit forming surface is roughened by a satin finish. 3. The hinge-shaped rib is formed in a U shape, and a horizontal portion connecting both vertical portions of the U-shaped rib is set to a size located below a light emitting point of the light source. The illumination mechanism for multiple buttons according to claim 1.