JP5570486B2 - Button switch illumination structure and electronic device using the illumination structure - Google Patents

Description

  The present invention relates to an illumination structure of a button switch, and more particularly to an illumination structure that switches light emission in a plurality of areas by pressing a button.

  Conventionally, in order to make it easy to recognize the operating state of the switch body, or to improve the visibility of the button, an illumination structure of a button switch that emits light in a predetermined area in the button has been used. In recent years, button switch illumination structures that contribute to a reduction in the number of components and a simplified circuit configuration have also been used. For example, Patent Document 1 includes two operational illumination LEDs and one functional illumination lamp. When the air conditioner switch and the inside / outside air changeover switch are turned on, the two actuation illumination LEDs are caused to emit light to A configuration is disclosed in which a display unit is illuminated and one functional illumination lamp is caused to emit light by turning on a light switch of a vehicle to illuminate the display units of two knobs.

JP-A-6-162869

  Since the illumination structure of the conventional button switch is configured as described above, there is a problem in that the light emission area of the light emitted from the same light source cannot be switched in accordance with the operating state of the switch body. Further, in order to switch the light emitting area, it is necessary to provide a plurality of LEDs or to provide a signal processing program for the switch body, which causes a problem of increasing the number of parts or increasing the cost.

  The present invention has been made to solve the above-described problems, and provides a button switch illumination structure that switches a light emitting region of light emitted from the same light source in accordance with the operating state of the switch body. With the goal.

The button switch illumination structure according to the present invention includes a switch, a light source that emits light, and a first reflecting surface that reflects light emitted from the light source, with one end surface serving as a light emitting surface and the other end surface serving as a light emitting surface. A first light guide that is opposed to the switch portion of the switch and supported so as to be reciprocally movable; and a second reflective surface that is parallel to the first reflective surface and reflects light emitted from the light source, A second light guide that is formed integrally with the first light guide through the third reflecting surface, and is supported so as to reciprocate with the first light guide; The first illumination opening and the second light emitting element that are attached to the emission surface of the first light guide and the emission surface of the second light guide and emit light by the light emitted from the emission surface of the first light guide. a second illumination openings which emits light by emitted light from the exit surface of the light guide, and a button for accepting the pressing manipulation For example, the reciprocation of the first light guide body and the second light guide member with the pressing operation of the button, the second reflecting surface is positioned outside the optical path of the light source, and the first light reflecting surface of the light source When located on the road, the light emitted from the light source is reflected by the first reflecting surface, guided through the first light guide, and emitted from the exit surface to cause the first illumination opening to pass. emit light, when the second reflecting surface is positioned on the optical path of the light source, the light emitted from the light source is reflected by the second reflecting surface, a second light guide body from the exit surface by guiding The second illumination opening is caused to emit light by the emitted light.

  According to the present invention, it is possible to improve the recognition of the operating state of the switch body and the visibility of the button with a small number of parts.

It is a figure which shows the illumination structure of the button switch by Embodiment 1. FIG. It is a figure which shows the detail of the component of the illumination structure of the button switch by Embodiment 1, (a) is a 2nd light guide, (b) is a light source. It is the figure which looked at the button of the illumination structure of the button switch by Embodiment 1 from the front. It is a figure which shows the illumination structure of the button switch by Embodiment 2. FIG. It is the figure which looked at the button of the illumination structure of the button switch by Embodiment 2 from the front. It is sectional drawing which shows the button vicinity of the illumination structure of the button switch by Embodiment 2. FIG.

Embodiment 1 FIG.
1A and 1B are diagrams showing a button switch illumination structure according to Embodiment 1 of the present invention. FIG. 1A shows a switch body in an off state, and FIG. 1B shows a switch body in an on state. Show.
As shown in FIGS. 1A and 1B, the illumination structure of the button switch includes a button 1, a light source 2, a switch body 3, a substrate 4, a first light guide 5, a second light guide 6, It comprises a panel 7, a reflective surface (first reflective surface) 8, and first and second illumination openings 9a and 9b.

  The button 1 slides in the arrow A direction or the counter-arrow A direction in accordance with the user's push-in operation or push-in release operation. In the example shown in FIG. 1, when the button 1 is on, it is pushed into the storage recess 7a of the panel 7a in the direction of arrow A, and when the button 1 is off, it is pushed from the storage recess 7a of the panel 7 in the direction opposite to the arrow A. Extruded. The storage recess 7a for storing the button 1 is provided with a mechanism for holding the pressed button 1 in its pressed state, and a mechanism for releasing and pressing the button 1 when the pressed button 1 is pressed. Since it is a known configuration, illustration is omitted.

  Further, the button 1 is formed with a first illumination opening 9a, and the first illumination opening 9a emits light by light guided through a first light guide 5 described later. The light source 2 and the switch body 3 are provided on the substrate 4. The light source 2 is configured by an LED, a lamp, or the like. The switch body 3 includes a switch portion 3a that is protruded so as to be able to be pushed in the direction of an arrow A. When the switch portion 3a is pushed, a switch-on signal is output to the substrate 4, and when the switch portion 3a is released, the switch 4 is turned off. Output a signal.

  The first light guide 5 is a light guide that extends in a direction orthogonal to the light irradiation direction of the light source 2, and is arranged horizontally in parallel with the substrate 4 in FIG. 5a is inserted in the vicinity button 1. The first light guide 5 moves horizontally in the direction of the arrow A or the direction of the anti-arrow A in synchronization with the operation of pushing the button 1 in the direction of the arrow A or the operation for releasing the push-in in the direction of the anti-arrow A. The switch part 3a of the switch body 3 is pushed in or released.

  The second light guide 6 has a substantially L shape, and the incident surface 6a at one end is disposed opposite to the light source 2 with the first light guide 5 interposed therebetween, and the light emitted from the light source 2 is refracted by about 90 °. And a light guide that guides light. The light emitted from the light source 2 and transmitted through the first light guide 5 enters the incident surface 6a, and is refracted by about 90 ° in the reflection region (second reflection surface) 6b of the substantially L-shaped curved portion. The light exits from the exit surface 6c.

  The panel 7 includes a storage recess 7a in which the button 1 can be stored. The opening 7b provided in the storage recess 7a supports the first light guide 5 so as to be slidable. In addition, an opening 9 b for the second illumination is formed above the storage recess 7 a of the panel 7, and the opening 9 b for the second illumination is light emitted from the exit surface 6 c of the second light guide 6. Emits light.

The reflection surface 8 is a surface in which the upper surface of the first light guide 5 is inclined by about 45 ° toward the emission surface 5 a with respect to the path of light emitted from the light source 2. By setting the inclination angle of the reflection surface 8 to about 45 °, the light emitted from the light source 2 can be totally reflected, refracted by about 90 °, and emitted from the emission surface 5a.
When the switch body 3 is off (see FIG. 1A), the reflecting surface 8 is positioned on the path of light emitted from the light source 2, and reflects the light emitted from the light source 2 to reflect the first light guide. 5 is guided and emitted from the exit surface 5a. On the other hand, when the switch body 3 is on (see FIG. 1B), the reflecting surface 8 is located on the switch body 3 side with respect to the path of the light emitted from the light source 2, so that no light is reflected. Thus, the reflecting surface 8 switches the path of light emitted from the light source 2 as the first light guide 5 slides in the horizontal direction.

Next, the light emission switching of the opening portion 9a of the first illumination and the opening portion 9b of the second illumination according to the on / off operation of the switch body 3 will be described.
First, the case where the switch body 3 is off will be described with reference to FIG.
When the switch body 3 is off, the first illumination opening 9a emits light, and the second illumination opening 9b stops emitting light. In this case, the button 1 is pushed out from the storage recess 7a of the panel 7 in the direction of the arrow A, and a gap is formed between the button 1 and the storage recess 7a. Further, the end surface 5b of the first light guide 5 is also located on the panel 7 side, is separated from the switch portion 3a of the switch body 3, and releases the push of the switch portion 3a.

  The first light guide 5 slides in the opposite arrow A direction along with the release of the button 1 in the opposite arrow A direction, and the reflecting surface 8 is positioned on the path of the light emitted from the light source 2. The light reflected by the reflecting surface 8 passes through the first light guide 5 and is emitted from the emitting surface 5b, and the first illumination opening 9a of the button 1 emits light. The user recognizes that the button 1 is in the OFF state by the light emission of the opening portion 9a of the first illumination.

Next, the case where the switch body 3 is turned on will be described with reference to FIG.
When the switch body 3 is on, the first illumination opening 9a stops emitting light, and the second illumination opening 9b emits light. In this case, the button 1 is pushed into the storage recess 7 a of the panel 7 in the direction of arrow A, and the button 1 and the storage recess 7 a for storing the button 1 are in contact with each other. Furthermore, the end surface 5b of the first light guide 5 is also positioned on the switch body 3 side, and is biased in the direction in which the switch section 3a of the switch body 3 is pushed (arrow A direction).

  As the button 1 is pushed in the direction of the arrow A, the first light guide 5 also slides in the direction of the arrow A, and the reflecting surface 8 is out of the path of the light emitted from the light source 2, more specifically in the path of the light. On the other hand, it is located on the switch body 3 side. The light emitted from the light source 2 passes through the first light guide 5 and enters the second light guide 6 from the incident surface 6a, is refracted by about 90 ° in the reflection region 6b, and is emitted from the emission surface 6c. The second illumination opening 9b emits light. The user recognizes that the button 1 is in the ON state by the light emission of the opening portion 9b of the second illumination.

  In order to efficiently emit light from the opening 9a of the first illumination and the opening 9b of the second illumination using the light from the light source 2, the reflection surface 8 and the reflection region 6a are irradiated from the light source 2. It is effective to arrange so that the light is totally reflected. In FIG. 1, the reflection region 6 a which is a curved portion is shown, but as shown in FIG. 2A, as a reflection surface 6 b provided with an inclination of about 45 ° on the exit surface 6 c side with respect to the light path. Also good. Further, in order to make light incident on the first light guide 5 or the second light guide 6 efficiently, the light source 2 irradiates light with high straightness, or as shown in FIG. You may comprise so that the surrounding wall may be provided with the standing wall 2a which limits an irradiation area | region, and light may be irradiated linearly.

FIG. 3 is a front view of the switch having the button switch illumination structure according to the first embodiment of the present invention.
FIG. 3A shows a case where the switch body 3 is off and the light emitted from the light source 2 is guided into the first light guide 5, and the first illumination opening 9 a of the button 1 emits light. For example, characters such as “Switch” emit light. On the other hand, the second illumination opening 9b provided in the panel 7 stops light emission. On the other hand, FIG. 3B shows a case where the switch body 3 is on and the light emitted from the light source 2 is guided into the second light guide 6, and the first illumination opening 9 a of the button 1. Stops emitting light, and the second illumination opening 9b provided in the panel 7 emits light. The openings 9a and 9b of the first and second illuminations are not limited to characters, and can be formed according to various display modes such as symbols and numbers.

  As described above, according to the first embodiment, the first light guide 5 is provided with the reflecting surface 8 that reflects the light emitted from the light source 2, and the first push-in or push-out operation of the button 1 is performed. The reflecting surface 8 is moved according to the movement of the light guide 5, and the emission destination of the light emitted from the light source 2 is either the emission surface 5 a of the first light guide 5 or the emission surface 6 c of the second light guide 6. Since the light is emitted from one light source, it is possible to switch the light emission of the two illumination openings in accordance with the push-in or push-out operation of the button. Thereby, a plurality of areas can be emitted with light emitted from one light source 2, and the visibility of the operating state of the switch body and the visibility of the button can be improved with a small number of parts.

  Further, according to the first embodiment, since the incident surface 6a of the second light guide 6 and the light source 2 are arranged to face each other with the first light guide 5 interposed therebetween, the first light guide 5 is arranged. When the reflecting surface 8 moves out of the optical path of the light source 2 in accordance with the pressing or releasing operation, the light from the light source 2 can be irradiated onto the incident surface 6a.

In the above-described first embodiment, the configuration in which the second illumination opening 9b is provided above the first illumination opening 9a has been described. It is not limited and can be changed as appropriate as long as it is in the vicinity of the opening portion 9a of the first illumination. In this case, the arrangement positions of the light source 2, the substrate 4, the second light guide 6, and the reflecting surface 8 are changed according to the position of the opening 9b of the second illumination.
In the first embodiment described above, the button 1 and the first light guide 5 are separate parts, but they may be integrally formed as one part.

Embodiment 2. FIG.
In the first embodiment described above, the structure in which the light emission between the first illumination opening 9a of the button 1 and the second illumination opening 9b provided in the panel 7 is switched is shown. 2 shows a configuration for switching the light emitting area in the button 1.
4A and 4B are diagrams showing the illumination structure of the button switch according to the second embodiment of the present invention. FIG. 4A shows a state where the switch body is off, and FIG. 4B shows a state where the switch body is on. Is shown. As shown in FIG. 4, since the structure of the button 1, the light source 2, the switch body 3, the substrate 4 and the panel 7 is the same as that of the first embodiment, the same reference numerals as those used in the first embodiment are given. The description will be omitted or simplified.

  The button 1 includes a first illumination opening 9a ′ that emits light by light guided through a first light guide region 13 of a light guide 11 to be described later, and a second of the light guide 11 to be described later on a lower portion. The light guide region 14 is provided with a second illumination opening 9b ′ that emits light by light guided.

  In the second embodiment, a light guide 11 is provided in place of the first and second light guides 5 and 6 shown in the first embodiment. The light guide 11 is a light guide that extends in a direction perpendicular to the light irradiation direction of the light source 2, and an end 7b that is slidably supported by the opening 7b provided in the storage recess 7a and serves as an emission surface 11a. Button 1 is inserted in The light guide 11 moves horizontally in the direction of the arrow A or the direction of the anti-arrow A in synchronization with the operation of pushing the button 1 in the direction of the arrow A or the operation for releasing the push-in in the direction of the anti-arrow A. 3 switch part 3a is pushed in or released.

Further, the light guide 11 includes a first light guide region 13 on the upper side and a second light guide region 14 on the lower side, with a reflective surface (third reflective surface) 12 disposed therein as a boundary. The reflective surface 12 is formed as a single piece by insert molding or vapor deposition of a thin reflective sheet. As a thin reflective sheet, for example, a light reflecting sheet such as a glossy aluminum sheet is disposed to improve the light reflection efficiency. Further, by arranging a sheet that reflects light, the shielding effect between the first light guide region 13 and the second light guide region 14 is improved, and light is prevented from leaking to one light guide region. can do.
In addition to configuring the reflective surface 12 using a thin reflective sheet, the first light guide region 13 and the second light guide region 14 are composed of resins having different refractive indexes, and are reflective surfaces that are boundary surfaces. It is also possible to reflect light at 12.

  The first light guide region 13 and the second light guide region 14 include a reflective surface 8 ′ and a reflective surface 14a, respectively. The reflection surface 8 ′ is a surface in which the upper surface of the first light guide region 13 is inclined about 45 ° toward the emission surface 11 a with respect to the path of the light emitted from the light source 2. The reflection surface 14 a is a surface in which a part of the reflection surface 12 is inclined by about 45 ° toward the emission surface 11 a with respect to the path of light emitted from the light source 2. By setting the inclination angle of the reflecting surface 8 ′ and the reflecting surface 14a to about 45 °, the light irradiated from the light source 2 can be totally reflected, refracted by about 90 °, and emitted from the emitting surface 11a.

When the switch body 3 is off (see FIG. 4A), the reflecting surface 8 ′ is positioned on the path of the light emitted from the light source 2, and reflects the light emitted from the light source 2 to reflect the first light. The light is guided into the guide region 13 and emitted from an emission region (emission surface) 13a above the emission surface 11b.
On the other hand, when the switch body 3 is on (see FIG. 4B), the reflecting surface 8 ′ is positioned on the switch body 3 side with respect to the path of light emitted from the light source 2. On the other hand, the reflecting surface 14a is located on the path of the light emitted from the light source 2, reflects the light emitted from the light source 2 and guides it into the second light guide region 14, and below the exit surface 11b. The light is emitted from a certain emission region (exit surface) 14a. As described above, as the light guide 11 slides in the horizontal direction, the reflection surface of the light emitted from the light source 2 is switched, and the light path is switched.

Next, the light emission switching of the opening portion 9a ′ of the first illumination and the opening portion 9b ′ of the second illumination according to the on / off operation of the switch body 3 will be described.
First, the case where the switch body 3 is off will be described with reference to FIG.
When the switch body 3 is off, the first illumination opening 9a ′ emits light, and the second illumination opening 9b ′ stops emitting light. In this case, the button 1 is pushed out from the storage recess 7a of the panel 7 in the direction of the arrow A, and a gap is formed between the button 1 and the storage recess 7a. Furthermore, the end surface 11b of the light guide 11 is also located on the panel 7 side, is separated from the switch portion 3a of the switch body 3, and releases the push of the switch portion 3a.

  The light guide 11 slides in the anti-arrow A direction along with the release of the button 1 in the anti-arrow A direction, and the reflecting surface 8 ′ of the first light guide region 13 is on the path of the light emitted from the light source 2. To position. On the other hand, the reflecting surface 14a of the second light guide region 14 is positioned on the panel 7 side with respect to the path of light emitted from the light source 2, specifically, the path of light traveling in the straight direction. The light emitted from the light source 2 enters the first light guide region 13 and is totally reflected by the reflecting surface 8 ′, and is guided through the first light guide region 13 and exits from the exit region 13 a. The opening 9a ′ of the first illumination of the button 1 emits light by the light emitted from the emission region 13a, and the user recognizes that the button 1 is in the off state.

Next, a case where the switch body 3 is on will be described with reference to FIG.
When the switch body 3 is on, the first illumination opening 9a ′ stops emitting light, and the second illumination opening 9b ′ emits light. In this case, the button 1 is pushed into the recess 7a of the panel 7 in the direction of arrow A, and the button 1 and the storage recess 7a are in contact with each other. Furthermore, the end surface 11b of the light guide 11 is also positioned on the switch body 3 side, and the end surface 11b is biased in the direction in which the switch portion 3a of the switch body 3 is pushed (arrow A direction).

  As the button 1 is pushed in the direction of the arrow A, the light guide 11 also slides in the direction of the arrow A, and the reflecting surface 8 ′ of the first light guide region 13 is outside the path of the light emitted from the light source 2. Is located on the switch body 3 side with respect to the light path. On the other hand, the reflection surface 14 a of the second light guide region 14 is located on the path of light emitted from the light source 2. The light emitted from the light source 2 enters the second light guide region 14 and is totally reflected by the reflecting surface 14a, and is further guided through the second light guide region 14 and emitted from the emission region 14b. By the light emitted from the emission region 14b, the second illumination opening 9b ′ of the button 1 emits light, and the user recognizes that the button 1 is in the ON state.

As in the first embodiment, the light from the light source 2 is used to efficiently emit light from the first illumination opening 9a ′ and the second illumination opening 9b ′. It is effective to arrange the surface 14a so as to totally reflect the light emitted from the light source 2.
Further, as in the first embodiment, the button 1 and the light guide 11 are separate parts, but they may be integrally formed as one part.

FIG. 5 is a front view of the button of the button switch illumination structure according to the second embodiment.
FIG. 5A shows a case where the switch body 3 is off and the light emitted from the light source 2 is guided into the first light guide region 13, and the first illumination provided above the button 1 is shown. The opening 9a ′ emits light, and characters such as “OFF” emit light. On the other hand, the second illumination opening 9b ′ provided below the button 1 stops light emission.

  On the other hand, FIG. 5B shows a case where the switch body 3 is on and the light emitted from the light source 2 is guided into the second light guide region 14. The illumination opening 9b ′ emits light, and characters such as “ON” emit light. On the other hand, the first illumination opening 9a ′ provided above the button 1 stops light emission.

Next, in the illumination of the button 1 shown in FIG. 5, for example, as shown in FIG. 5A, the light illuminating the characters “OFF” in the opening 9a ′ of the first illumination is the second illumination. FIG. 6 shows a configuration for preventing leakage to the opening 9b ′ side.
FIG. 6 is a cross-sectional view showing the vicinity of a button in the illumination structure of the button switch of the second embodiment.
In the example of FIG. 6A, a shielding portion 1 a protruding in the direction of the light guide 11 is provided at the inner center portion of the button 1. The shielding part 1a is located on the extension of the reflection surface 12 of the light guide 11, and serves as a shielding member that separates the light emitted from the emission region 13a and the light emitted from the emission region 14b.
In the example of FIG. 6B, the shielding sheet 12 a is provided by extending the reflecting sheet that constitutes the reflecting surface 12 of the light guide 11 until it contacts the inner central portion of the button 1. The shielding part 12a is also a shielding member that separates the light emitted from the emission surface and the light emitted from the emission region 14b. In FIG. 6B, when the reflecting surface 12 is a surface that reflects light due to a difference in refractive index, a light shielding member is applied from the light exit surface 11a of the light guide 11 to the inner center of the button 1. You may make it protrude so that it may touch.

  As described above, according to the second embodiment, the first light guide region 13 is provided with the reflecting surface 8 ′ that reflects the light emitted from the light source 2, and the second light guide region 14 is provided with the light source 2. A reflection surface 14a for reflecting the irradiated light is provided, and the reflection of the light emitted from the light source 2 is reflected by the reflection surface 8 'and the reflection surface 14a according to the movement of the light guide 11 in accordance with the pushing or releasing operation of the button 1. The light emission destination is switched to either the emission area 13a of the first light guide area 13 or the emission area 14b of the second light guide area 14, so that the light emitted from one light source Can be used to switch the light emission of the two illumination openings in accordance with the push-in or push-out operation of the button. Thereby, a plurality of areas can be caused to emit light with the light emitted from one light source 2, and the recognition of the operating state of the switch body and the visibility of the button can be improved with a small number of parts.

  Further, according to the second embodiment, the reflection surface 12 is provided in the light guide 11 to form the two light guide regions 13 and 14, and the emission destination of the light emitted from the light source 2 is switched. Therefore, the number of parts can be reduced.

  In addition to the configurations of the first and second embodiments described above, either the first light guide 5 or the second light guide 6 is colored, or the colors are different from each other, or the first By coloring either one of the first light guide region 13 and the second light guide region 14 or by coloring them in different colors, the first illumination openings 9a and 9a 'and the second illumination opening The illumination colors with the portions 9b and 9b ′ can be changed, and the recognition of the operating state of the switch body 3 and the visibility of the button 1 are further improved.

  In the first and second embodiments described above, the light emission of the opening portions 9a and 9a ′ of the first illumination indicates that the button 1 is off, and the openings 9b and 9b ′ of the second illumination portions Although the case where the light emission of the illumination indicates that the button 1 is turned on has been described as an example, the reverse may be possible.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  1 button, 1a, 12a shielding part, 2 light source, 2a standing wall, 3 switch body, 3a convex part, 4 substrate, 5 first light guide, 5a, 11a emission surface, 5b, 11b end surface, 6 second Light guide, 6a incident surface, 6b reflecting area (reflecting surface), 6c emitting surface, 7 panel, 7a storage recess, 7b opening, 8, 8 ', 12, 14a reflecting surface, 9a, 9a' first illumination 9b, 9b 'second illumination opening, 11 light guide, 13 first light guide region, 13a, 14b emission region, 14 second light guide region.

Claims (5)

A switch,
A light source that emits light;
A first light-reflecting surface that reflects light emitted from the light source, has one end surface as a light emitting surface, and the other end surface is opposed to the switch portion of the switch so as to be reciprocally supported; Light body,
A second reflection surface that is parallel to the first reflection surface and reflects light emitted from the light source is provided. One end surface is a light emission surface, and the first reflection surface is interposed through the third reflection surface. A second light guide integrally formed with the light guide and supported so as to reciprocate together with the first light guide;
A first illumination opening that is mounted on the emission surface of the first light guide and the emission surface of the second light guide, and emits light by the light emitted from the emission surface of the first light guide; A second illumination opening that emits light emitted from the exit surface of the second light guide, and a button that accepts a pressing operation;
Due to the reciprocation of the first light guide and the second light guide accompanying the pressing operation of the button, the second reflection surface is located outside the optical path of the light source, and the first reflection surface Is positioned on the optical path of the light source, the light emitted from the light source is reflected by the first reflecting surface, guided through the first light guide, and emitted from the emitting surface. thereby emitting the first illumination opening by, when said second reflecting surface is positioned on the optical path of the light source, the light emitted from the light source is reflected by the second reflecting surface, the An illumination structure of a button switch, characterized in that the second illumination opening is caused to emit light by light guided through the second light guide and emitted from the exit surface. It said third reflective surface, the illumination structure of the button switch according to claim 1, characterized in that it is a reflection sheet. It said third reflective surface, the illumination structure of the button switch according to claim 1, wherein the first is a boundary surface of the light guide body and the second light guide member having a different refractive index. The first reflecting surface and the second reflective surface, lighting structure of the button switch according to claim 1 Symbol mounting, characterized in that totally reflects the light emitted from the light source. The electronic device using the illumination structure of the button switch of any one of Claims 1-4 .

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