JP2017143045A - Lighting system for operation part and electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system for an operation part capable of uniformly lighting the surroundings of the operation part while suppressing increase of the number of components, and electronic equipment having the lighting system for the operation part built in.SOLUTION: Acoustic equipment 10 in which a lighting system for an operation part is built has a volume adjustment knob 13. A peripheral wall 14 is arranged in the surroundings of the volume adjustment knob 13. In the peripheral wall 14, a light source 15 is arranged on an inner wall surface, and covered with a cover 21. The cover 21 has an opening 27 exposing a part of the volume adjustment knob 13 to the outside. Since a side surface 13B of the volume adjustment knob 13, the inner wall surface of the peripheral wall 14, and an inner wall surface 21A of the cover 21 become reflective surfaces reflecting light, the light of the light source 15 is routed to the surroundings of the volume adjustment knob 13. As a result, the light to be emitted from a gap 30 formed in the surroundings of the volume adjustment knob 13 has no illuminance unevenness, and its light intensity becomes uniform in the surroundings of the volume adjustment knob 13.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an illumination device for an operation unit that illuminates an operation unit of the electronic device and the electronic device.

  Generally, an electronic device is provided with an operation unit that is used to operate the electronic device. If the electronic device is a portable audio device such as a headphone amplifier, the operation unit is, for example, a volume adjustment knob used for volume adjustment operation.

  Some of these electronic devices are provided with an operation unit illumination device that illuminates the operation unit, thereby improving the operability of the operation unit and improving the decoration. For example, an illumination device for an operation unit described in Patent Document 1 includes an operation unit formed of a transparent material such as an acrylic resin, a light source such as an LED, and an opening that exposes a part of the outer peripheral surface of the operation unit to the outside. The operation part is used as a light guide member to illuminate the operation part.

  In the illumination device for an operation unit of Patent Document 1, when the light source emits light in the cover, the light from the light source enters the operation unit in the cover. Since the inner wall surface of the cover is formed of a reflecting surface that reflects light from the light source, reflected light reflected by the inner wall surface is incident on the operation unit in addition to the light directly incident from the light source. Thereby, in the cover, the light of the light source is incident on the outer peripheral surface of the operation unit without unevenness. Since the operation unit is made of a transparent material, light incident on the operation unit is guided to the entire operation unit. Since a part of the operation unit is exposed from the cover, light is uniformly emitted from the outer peripheral surface of the exposed portion.

  Thus, in patent document 1, by making an operation part function as a light guide member, uniform illumination is enabled and the decorating property is improved.

JP 2007-165213 A

  However, the operation unit illumination device of Patent Document 1 cannot be employed when the operation unit is not a transparent material because the operation unit must be a transparent material. For example, an operation panel of an electronic device or an operation unit provided on the operation panel is often made of metal, and in this case, the operation unit cannot be used as a light guide member. Cannot be adopted.

  For this reason, in the lighting device for an operation unit, there is a demand for improving the decorativeness of the operation unit even when a transparent material is not used for the operation unit.

  For example, when the operation unit is made of metal, a method of illuminating the periphery of the operation unit is conceivable in order to improve the decorativeness of the operation unit. In this case, it is not preferable that the illumination around the operation unit is uneven. As a countermeasure to eliminate uneven illumination, a method of increasing the number of light sources arranged around the operation unit or using a light guide member such as a plastic light guide to make the amount of illumination uniform around the operation unit Can be considered. However, such a measure causes a problem that the number of parts increases and the cost and installation space increase.

  It is an object of the present invention to provide an operation unit illumination device that can uniformly illuminate the periphery of the operation unit while suppressing an increase in the number of components, and an electronic device incorporating the operation unit illumination device.

  In order to achieve the above object, the present invention is an illumination device for an operation unit that is used in an electronic device having a casing provided with an operation unit and illuminates the operation unit, and includes an operation unit attached to a main body. A peripheral wall that is arranged around and surrounds at least half of the entire circumference of the operation unit, and a cover that is attached to the main body and covers the peripheral wall and constitutes a part of the outer peripheral surface of the housing. A cover formed with an opening that exposes the portion to the outside, and a light source that is disposed on the peripheral wall and emits light that is emitted from the gap around the operation portion to the outside at the opening, The inner wall surface of the peripheral wall and the inner wall surface of the cover that are opposed to the part are formed by a reflection surface that reflects light from the light source.

  It is preferable that at least one light source is provided at each of two positions facing each other with the operation unit interposed therebetween on the inner wall surface of the peripheral wall.

  The case includes a top surface, a bottom surface, and both side surfaces extending in the front-rear direction connecting the front surface, the back surface facing the front surface, and the front surface and the back surface when the front surface of the operation unit is exposed. The cover is a first cover that forms a part of the front surface and the peripheral surface, and the opening includes a front surface portion that exposes the front surface of the operation unit on the front surface, and a front surface portion. And a side surface portion that exposes a part of the side surface of the operation portion.

  The light source has at least three light sources, a first light source and a second light source provided at one of two opposing positions, and a third light source provided at the other, and the first light source and the third light source are It is preferable that the irradiation direction is disposed toward the side surface portion, and the second light source is disposed in a direction opposite to the direction of the first light source by 180 °.

  It is preferable that the second cover is disposed inside the first cover, and the peripheral wall is formed integrally with the second cover.

  It is preferable that a light transmissive diffusion sheet is disposed between the operation unit and the peripheral wall on which the light source is disposed.

  The electronic device is preferably an audio device having an audio output terminal, and the operation unit is preferably a volume adjustment knob.

  The operation unit is preferably made of metal.

  The present invention is an electronic device having a housing provided with an operation unit, a main body to which the operation unit is attached, a peripheral wall disposed around the operation unit and surrounding at least half of the entire circumference of the operation unit; A cover that is attached to the main body, covers the peripheral wall, and constitutes a part of the outer peripheral surface of the housing, and is formed on the peripheral wall with a cover formed with an opening that exposes a part of the operation unit to the outside. A light source that emits light emitted from a gap around the operation unit to the outside in the opening, and the outer peripheral surface of the operation unit, the inner wall surface of the peripheral wall that faces the operation unit, and the inner wall surface of the cover are It is formed of a reflective surface that reflects light.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which incorporated the operating device lighting device and the operating device lighting device which can illuminate the circumference | surroundings of an operating unit uniformly, suppressing the increase in a number of parts can be provided.

It is a perspective view which shows the external appearance of the audio equipment provided with the illuminating device for operation parts. It is a perspective view which shows the state which removed the cover from the main body. It is a front view which shows the state which removed the cover from the main body. It is an enlarged front view which shows the state which removed the cover from the main body. It is a perspective view of a cover. It is an expansion perspective view which shows the state which removed the cover from the main body. It is explanatory drawing explaining an effect | action of the illuminating device for operation parts. It is explanatory drawing explaining an effect | action of the illuminating device for operation parts.

  In FIG. 1 and FIG. 2, the acoustic device 10 that is an electronic device is, for example, a headphone amplifier. The audio device 10 is provided with a volume adjustment knob 13 which is an operation unit used for volume adjustment operation.

  For example, the volume adjustment knob 13 has a cylindrical outer shape, and a part of the outer peripheral surface thereof is exposed to the outside from the outer peripheral surface of the housing 11. In the housing 11, when the surface of the outer peripheral surface of the volume adjustment knob 13 where the circular front surface 13A is exposed is the front surface, the housing 11 includes a front surface 11A, a back surface 11B facing the front surface 11A, It is a box-like shape composed of an upper surface 11C, a lower surface 11D, and peripheral surfaces including both side surfaces 11E and 11F that connect the front surface 11A and the back surface 11B and extend in the front-rear direction. On the peripheral surface, the side surfaces 11E and 11F connected to the upper surface 11C and the lower surface 11D are formed of curved surfaces, and the cross section of the housing 11 has a substantially oval shape.

  In addition to the volume adjustment knob 13, the front 11 </ b> A of the housing 11 has a headphone terminal 18 to which a headphone cable is connected and an input for inputting a digital or analog audio signal from an external device (not shown). Terminal 19 is provided. The headphone terminal 18 is an audio output terminal of the acoustic device 10.

  The back surface 11B is also provided with a power supply terminal, a USB (Universal Serial Bus) connector, and an audio output terminal (none of which is shown) for outputting an audio signal to an external device. There are two types of USB connectors: one that allows both audio signal input and power supply from an external device, and one that allows only audio signal input. For example, the output terminal outputs an analog audio signal to an external device.

  The side surface 11F is provided with a plurality of operation switches 17 for performing various operations. The operation switch 17 is, for example, a switch for switching the gain of an audio signal with a binary value of HIGH / LOW, a switch for switching ON / OFF of power supply using USB, and a switch for switching digital / analog of an input of an audio signal.

  As will be described later, the acoustic device 10 incorporates an operation unit illumination device that illuminates the volume adjustment knob 13. By providing such an illumination device for the operation unit, the operability and decoration of the volume adjustment knob 13 are improved. In the audio device 10, the volume adjustment knob 13 has a relatively large size because it is frequently operated among the operation units, and is often arranged at the most conspicuous position in the housing 11. Therefore, the decoration improvement effect by providing the operation unit illumination device for the volume adjustment knob 13 is great.

  As shown in FIG. 2, the housing 11 includes a main body 12 and a cover 21 attached to the front surface of the main body 12. The cover 21 corresponds to a first cover. The main body 12 is provided with an inner cover (corresponding to a second cover) 22 disposed inside the cover 21 on the front surface thereof. The code | symbol 23 is a diffusion sheet which diffuses light so that it may mention later.

  Inside the main body 12, a circuit board (not shown) to which the volume adjustment knob 13, the headphone terminal 18, the input terminal 19 and the like are attached is accommodated, and the internal cover 22 is disposed on the front surface of the main body 12. Cover the inside. The inner cover 22 has openings through which the volume adjustment knob 13, the headphone terminal 18, and the input terminal 19 are inserted. When the inner cover 22 is attached, the volume adjustment knob 13 and the like are connected from the inner cover 22 to the outside. It is arranged in an exposed state.

  The volume adjustment knob 13 can be rotated around the rotation axis O. The circuit board housed inside the main body 12 is provided with a control circuit such as an amplifier circuit that amplifies the input voice. When the volume adjustment knob 13 is rotated, the volume of the sound output to the headphones is adjusted. The volume adjustment knob 13 is made of metal such as aluminum.

  The volume adjustment knob 13 has a front surface 13A that is a plane orthogonal to the rotation axis O and a side surface 13B that is a curved surface around the rotation axis O. At least the side surface 13B is a reflection surface that reflects light. Composed.

  As shown in FIG. 3, the inner cover 22 is provided with a peripheral wall 14 disposed around the volume adjustment knob 13. For example, the peripheral wall 14 is arranged around the volume adjustment knob 13 on the side surface 11E side, the side surface 11F side, the lower surface 11D side, and the back surface 11B side, excluding the upper surface 11C side. That is, in the inner cover 22, the peripheral wall 14 is formed in a concave shape so as to accommodate the volume adjustment knob 13, and has a surface that faces the side surface 13 </ b> B and the back surface of the volume adjustment knob 13. Thus, at least half of the entire circumference of the volume adjustment knob 13 is surrounded by the peripheral wall 14.

  An insertion hole (not shown) through which a rotation shaft to which the volume adjustment knob 13 is attached is formed in the surface on the back surface 11B side of the peripheral wall 14. In a state where the inner cover 22 is attached, the rotating shaft protrudes from the insertion hole, and the volume adjustment knob 13 is inserted into the protruding rotating shaft.

  The inner cover 22 and the peripheral wall 14 are integrally formed of a plastic material, for example. The outer peripheral surface of the inner cover 22 is plated on the entire surface including the peripheral wall 14, whereby the inner wall surface of the peripheral wall 14 is a reflective surface that reflects light.

  On the inner wall surface of the peripheral wall 14, light sources 15 are arranged at two positions facing each other with the volume adjustment knob 13 interposed therebetween. More specifically, the light source 15 is disposed on each of the two opposing surfaces 14A located on the side surface 11E side and the side surface 11F side on the inner wall surface of the peripheral wall 14. The light source 15 is for illuminating the surroundings of the volume adjustment knob 13 and constitutes a main part of the operation unit illumination device.

  As shown in FIG. 4, the light source 15 is attached to pedestals 16 </ b> A and 16 </ b> B provided on a circuit board housed inside the main body 12. The inner cover 22 is formed with notches and openings through which the pedestals 16A and 16B are inserted. Each pedestal 16A, 16B protrudes from each facing surface 14A toward the side surface 13B of the volume adjustment knob 13 through a notch or opening.

  The light source 15 is, for example, an LED (Light Emitting Diode). Of course, not only LEDs but also EL (Electro Luminescence) elements may be used. The light source 15 includes a first light source 15A and a second light source 15B provided on one of the two opposing surfaces 14A, and a third light source 15C provided on the other opposing surface 14A.

  The pedestals 16A and 16B have a flat plate shape and are arranged with one surface (upper surface) facing the upper surface 11C and the other surface (lower surface) facing the lower surface 11D. When viewed from the front, the first light source 15A is provided on the upper surface of the left pedestal 16A, and the second light source 15B is provided on the lower surface. A third light source 15C is provided on the upper surface of the right pedestal 16B.

  The first light source 15A and the third light source 15C are arranged with the irradiation direction directed toward the upper surface 11C, and the second light source 15B is directed 180 ° opposite to the direction of the first light source 15A, that is, toward the lower surface 11D. Has been placed.

  The reason for this arrangement is that the upper surface 11C side of the peripheral wall 14 is open. That is, since the upper surface 11C side is open, the light traveling from the light source 15 toward the upper surface 11C side has a large loss. Of the three light sources 15A to 15C, the two light sources 15A and 15C are arranged with the irradiation direction directed toward the upper surface 11C in order to compensate for the light amount decrease on the upper surface 11C side where the loss of light is large.

  The position of the light source 15 is offset from the center of the volume adjustment knob 13 toward the lower surface 11D. The reason for the offset is also that the upper surface 11C side of the peripheral wall 14 is open. That is, since the light from the light source 15 illuminates the surroundings of the volume adjustment knob 13, it is necessary to reflect most of the light on the inner wall surface of the peripheral wall 14 and wrap around the volume adjustment knob 13. However, when the position of the light source 15 is close to the opening, there is a lot of light loss, and the amount of light that wraps around the lower portion of the volume adjustment knob 13 decreases. Therefore, by offsetting the light source 15 to the lower side opposite to the opened upper side, the amount of light emitted from the light source 15 is secured around the volume adjustment knob 13 to the lower part. .

  Further, a light transmissive diffusion sheet 23 is disposed between the side surface 13B of the volume adjustment knob 13 and the peripheral wall 14 on which the light source 15 is disposed (see also FIG. 2). The diffusion sheet 23 is made of paper, for example, and partially transmits the direct light from the light source 15 and the light reflected by the peripheral wall 14. Light that has passed through the diffusion sheet 23 and entered between the diffusion sheet 23 and the volume adjustment knob 13 is reflected by the side surface 13B of the volume adjustment knob 13. A part of the reflected light is transmitted through the diffusion sheet 23 but partly reflected. Due to the diffusing action through the reflection of light, the light can be circulated along the outer shape of the side surface 13B in the vicinity of the side surface 13B of the volume adjusting knob 13. Accordingly, it is possible to generate illumination light having a clear outline following the external shape of the volume adjustment knob 13.

  Further, the uniformity of illumination around the volume adjustment knob 13 is also improved by the diffusion action. In addition, since light is emitted to the outside through the diffusion sheet 23, it is possible to generate a soft illumination such as a row lamp or a lantern.

  Reference numeral 31 denotes a rib that holds the diffusion sheet 23, and is formed on a portion of the peripheral wall 14 on the back surface 11 </ b> B side. Around the volume adjustment knob 13, a plurality of ribs 31 are arranged at positions along the cylindrical outer shape of the volume adjustment knob 13. For example, the diffusion sheet 23 has a belt shape when no external force is applied, and when the diffusion sheet 23 is attached to the rib 31, the diffusion sheet 23 is rounded into a cylindrical shape in accordance with the outer shape of the volume adjustment knob 13. Is held by the ribs 31 so as to be maintained.

  As shown in FIGS. 5 and 6, the cover 21 is a cover that covers the inner cover 22 including the peripheral wall 14 and constitutes a part of the outer peripheral surface of the housing 11. The cover 21 is attached to the main body 12. The cover 21 is made of metal such as aluminum, and as shown in FIG. 5, the inner wall surface 21A of the cover 21 is a reflecting surface that reflects light.

  As for the cover 21, the outer peripheral surface comprises 11 A of front surfaces of the housing | casing 11, and a part of peripheral surface containing the upper surface 11C, the lower surface 11D, and the side surfaces 11E and 11F. The cover 21 has a cup shape with a hollow inside, and the internal cover 22 is disposed inside. The cover 21 has a tapered shape that is inclined so as to taper from the rear end portion constituting the peripheral surface toward the front end portion constituting the front surface 11A. The cover 21 has an opening 27 that exposes a part of the volume adjustment knob 13 to the outside.

  The opening 27 is formed in such a manner that the front surface portion 27A that exposes the front surface 13A of the volume adjustment knob 13 on the front surface 11A and the front surface portion 27A in a state where the cover 21 is attached to the main body 12, and the volume adjustment knob 13 And a side surface portion 27B exposing a part of the side surface 13B. The side surface portion 27B is formed by cutting out a portion from the front surface 11A of the cover 21 toward the peripheral surface.

  The shape of the opening 27 allows a part of the side surface 13B of the volume adjustment knob 13 to be exposed to the outside, so that the volume adjustment knob 13 can be operated without protruding the volume adjustment knob 13 from the front surface 11A. It becomes. That is, by making the volume adjustment knob 13 not protrude, good operability is ensured by exposing the side surface 13B from the side surface portion 27B of the opening 27 while ensuring the design of the front surface 11A.

  As shown in FIG. 1, when the cover 21 is attached, a gap 30 is formed around the volume adjustment knob 13 in the opening 27. Light from the light source 15 inside the cover 21 is emitted from the gap to the outside of the cover 21. In this example, the operation unit illumination device that illuminates the volume adjustment knob 13 includes a peripheral wall 14, a cover 21, a light source 15, and a diffusion sheet 23.

  The main body 12 and the cover 21 are assembled in a state where the cover 21 is attached so as to cover the inner cover 22, for example, by screwing, and the acoustic device 10 is assembled.

  As shown in FIG. 6, the cover 21 has a headphone terminal opening 24 for exposing the headphone terminal 18 to the outside of the cover 21, and an input terminal opening 25 for exposing the input terminal 19 to the outside of the cover 21. Is formed. A headphone cable can be connected through the headphone terminal opening 24, and an external device cable can be connected through the input terminal opening 25.

  Next, the effect | action of the illuminating device for operation parts of the audio equipment 10 is demonstrated. As shown in FIGS. 7 and 8, in the state where the cover 21 is attached to the main body 12, the inner cover 22 including the peripheral wall 14 is covered. The left and right and lower portions of the side surface 13B of the volume adjustment knob 13 attached to the main body 12 are also covered with the cover 21. Upper portions of the front surface 13A and the side surface 13B of the volume adjustment knob 13 are exposed to the outside through the opening 27.

  When the audio device 10 is turned on, the light source 15 is turned on. The light source 15 is disposed on the peripheral wall 14 and is positioned between the side surface 13B of the volume adjustment knob 13 and the opposing surface 14A of the peripheral wall 14. In the opening 27, a gap 30 is formed around the volume adjustment knob 13. Light from the light source 15 is emitted from the gap 30 to the outside of the cover 21. Thereby, the periphery of the volume adjustment knob 13 is illuminated.

  The light source 15 is disposed on the peripheral wall 14 and is positioned between the side surface 13 </ b> B of the volume adjustment knob 13 and the peripheral wall 14. The side surface 13B of the volume adjustment knob 13, the facing surface 14A of the peripheral wall 14, and the inner wall surface 21A of the cover 21 are reflection surfaces that reflect light. For this reason, the light of the light source 15 is repeatedly reflected by each reflecting surface and diffused in multiple directions. Light is propagated by such a diffusion action and wraps around the volume adjustment knob 13. For this reason, the light emitted from the gap 30 has no illuminance unevenness, and the amount of light is uniform around the volume adjustment knob 13.

  In this example, since the diffusion sheet 23 is arranged between the peripheral wall 14 and the volume adjustment knob 13, the diffusion effect is further improved. That is, part of the light from the light source 15 passes through the diffusion sheet 23. Then, the transmitted light is reflected by the side surface 13B of the volume adjustment knob 13, and a part of the reflected light is reflected by the diffusion sheet 23 and again by the side surface 13B. Due to the diffusing action through the reflection of light, the light can be circulated along the outer shape of the side surface 13B in the vicinity of the side surface 13B of the volume adjusting knob 13. Accordingly, it is possible to generate illumination light having a clear outline following the external shape of the volume adjustment knob 13.

  Further, the uniformity of illumination around the volume adjustment knob 13 is also improved by the diffusion action. In addition, since the light is emitted to the outside through the diffusion sheet 23, it is possible to generate a soft illumination such as a row lamp or a lantern, and the decoration effect of the illumination is improved. The diffusion sheet 23 may be a resin sheet having light transmittance. If it is a white light-transmitting sheet, the same effect as a paper sheet can be obtained.

  The illuminating device for the operation unit of this example is configured to diffuse light by using the side surface 13B of the volume adjustment knob 13, the peripheral wall 14, and the inner wall surface 21A of the cover 21 as a reflecting surface. Therefore, for example, as compared with the case where a large number of light sources are arranged around the volume adjustment knob 13 or a plastic light guide that guides light is used, the volume adjustment knob is suppressed while suppressing an increase in the number of parts. The periphery of the operation unit such as 13 can be illuminated uniformly.

  Since the acoustic device 10 as in this example is a portable type, the present invention is particularly effective because there is a great merit due to a decrease in the number of components and a decrease in component cost and installation space for components.

  Further, in this example, the diffusion sheet 23 is used in addition to the peripheral wall 14 and the like. However, the diffusion sheet 23 is smaller in part cost and installation space than a light guide member such as a plastic light guide. That's it. Therefore, even when the diffusion sheet 23 is provided, merits due to a reduction in component cost and installation space can be obtained.

  Furthermore, since the peripheral wall 14 is formed integrally with the inner cover 22, it is more advantageous in terms of component costs and installation space than when formed separately from the inner cover 22.

  Further, in the opening portion 27 of this example, a side surface portion 27B that exposes the upper surface 11C side of the side surface 13B of the volume adjustment knob 13 is formed. And the upper surface 11C side of the surrounding wall 14 is also opened facing the side part 27B. For this reason, the light traveling from the light source 15 toward the upper surface 11 </ b> C has a large loss and the light amount is reduced. Therefore, the two light sources 15A and 15C among the three light sources 15A to 15C are arranged with the irradiation direction directed toward the upper surface 11C, and the light amount reduction in the upper portion is suppressed.

  The light sources 15 </ b> A to 15 </ b> C are arranged offset to the lower side of the volume adjustment knob 13. As a result, the amount around the volume adjustment knob 13 is secured to the lower part.

  In this example, the volume adjustment knob 13 and the cover 21 are made of metal such as aluminum. Since metal is advantageous for countermeasures against electromagnetic noise, it is often used for an acoustic device 10 such as a headphone amplifier that is highly required to reduce signal noise. Since it is easy to form a reflective surface if it is a metal part, the present invention is easy to apply. Of course, the volume adjustment knob 13 and the cover 21 do not have to be entirely made of metal. For example, a resin surface may be plated to form a reflecting surface like the peripheral wall 14. The peripheral wall 14 may also be made of metal.

  Moreover, the opening part 27 does not need to have the side part 27B, and only the front part 27A may be sufficient as it.

  Moreover, although the said embodiment demonstrated in the example which provided the diffusion sheet 23, the diffusion sheet 23 does not need to be provided. Of course, as described above, since the diffusion effect and the decoration effect are improved by providing the diffusion sheet 23, the diffusion sheet 23 is preferably provided.

  In the above-described embodiment, the operation unit illumination device has been described with an example in which the operation unit is the volume adjustment knob 13. However, the operation unit illumination device can also be applied to an operation unit other than the volume adjustment knob 13. The operation unit is not limited to an operation unit that is rotated, but may be a push button that is pressed.

  The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Audio equipment 11 Housing | casing 12 Main body 13 Volume adjustment knob 13A Front surface 13B Side surface 14 Peripheral wall 14A Opposing surface 15 Light source 15A 1st light source 15B 2nd light source 15C 3rd light source 21 Cover 21A Inner wall surface 22 Internal cover 23 Diffusion sheet 27 Opening part 27A Front part 27B Side part 30 Crevice 31 Rib

Claims (9)

In an illumination device for an operation unit that is used in an electronic device having a casing provided with an operation unit and illuminates the operation unit
A peripheral wall disposed around the operation unit attached to the main body and surrounding at least half of the entire periphery of the operation unit;
A cover that is attached to the main body, covers the peripheral wall, and constitutes a part of the outer peripheral surface of the housing, wherein the cover is formed with an opening that exposes a part of the operation part to the outside;
A light source that is disposed on the peripheral wall and emits light emitted from a gap around the operation unit to the outside in the opening,
The operating unit illumination device, wherein an outer peripheral surface of the operation unit, an inner wall surface of the peripheral wall facing the operation unit, and an inner wall surface of the cover are formed by a reflecting surface that reflects light of the light source.   The lighting device for an operation unit according to claim 1, wherein at least one light source is provided at each of two positions facing each other with the operation unit interposed therebetween on the inner wall surface of the peripheral wall. The housing has an upper surface and a lower surface that extend in the front-rear direction connecting the front surface, the back surface facing the front surface, and the front surface and the back surface, when the front surface of the operation unit is exposed. And a shape composed of a peripheral surface including both side surfaces,
The cover is a first cover constituting a part of the front surface and the peripheral surface,
The opening includes a front surface portion that exposes a front surface of the operation portion on the front surface, and a side surface portion that is formed in a continuous form from the front surface portion and exposes a part of a side surface of the operation portion. The illumination device for operation parts as described in any one of. The light source has at least three light sources: a first light source and a second light source provided at one of the two opposing positions, and a third light source provided at the other,
The said 1st light source and the said 3rd light source are arrange | positioned with the irradiation direction toward the said side part, The said 2nd light source is arrange | positioned in the direction 180 degree opposite to the direction of the said 1st light source. Illumination device for operation unit. A second cover disposed inside the first cover;
5. The operating unit illumination device according to claim 3, wherein the peripheral wall is formed integrally with the second cover.   The illuminating device for an operation unit according to any one of claims 1 to 5, wherein a diffusion sheet having light permeability is disposed between the operation unit and the peripheral wall on which the light source is disposed. The electronic device is an audio device having an audio output terminal,
The illumination device for an operation unit according to claim 1, wherein the operation unit is a volume adjustment knob.   The operating unit illumination device according to claim 1, wherein the operating unit is made of metal. In an electronic device having a casing provided with an operation unit,
A main body to which the operation unit is attached;
A peripheral wall disposed around the operation portion and surrounding at least half of the entire circumference of the operation portion;
A cover that is attached to the main body, covers the peripheral wall, and constitutes a part of the outer peripheral surface of the housing, wherein the cover is formed with an opening that exposes a part of the operation part to the outside;
A light source that is disposed on the peripheral wall and emits light emitted from a gap around the operation unit to the outside in the opening,
An electronic device in which an outer peripheral surface of the operation unit, an inner wall surface of the peripheral wall facing the operation unit, and an inner wall surface of the cover are formed by a reflection surface that reflects light from the light source.

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