WO2010113535A1 - Electronic apparatus - Google Patents

Electronic apparatus Download PDF

Info

Publication number
WO2010113535A1
WO2010113535A1 PCT/JP2010/051101 JP2010051101W WO2010113535A1 WO 2010113535 A1 WO2010113535 A1 WO 2010113535A1 JP 2010051101 W JP2010051101 W JP 2010051101W WO 2010113535 A1 WO2010113535 A1 WO 2010113535A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface
electronic device
light
portion
light emitting
Prior art date
Application number
PCT/JP2010/051101
Other languages
French (fr)
Japanese (ja)
Inventor
貴行 古坊
Original Assignee
株式会社ソニー・コンピュータエンタテインメント
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2009090566A priority Critical patent/JP5101555B2/en
Priority to JP2009090567A priority patent/JP5101556B2/en
Priority to JP2009-090567 priority
Priority to JP2009-090566 priority
Application filed by 株式会社ソニー・コンピュータエンタテインメント filed Critical 株式会社ソニー・コンピュータエンタテインメント
Publication of WO2010113535A1 publication Critical patent/WO2010113535A1/en

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046Tapered light guide, e.g. wedge-shaped light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068Arrangements of plural sources, e.g. multi-colour light sources
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031Reflecting element, sheet or layer
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00Legends
    • H01H2219/054Optical elements
    • H01H2219/062Light conductor

Abstract

Provided is an electronic apparatus, which has a light guide member formed to extend from a portion where light emitted from a light source enters, and effectively uses the light emitted from the light source. The light guide member has an extending section (82) which extends in the direction of the outer surface of the electronic apparatus. The extending section (82) has a light emitting surface which is exposed from the outer surface of the electronic apparatus. Furthermore, the rear surface (82b) which is the surface on the reverse side of the light emitting surface of the extending section (82) includes a tilted surface (82c). The tilted surface (82c) is formed such that the tilted surface diagonally intersects the direction perpendicular to both of the direction wherein the light emitting surface and the rear surface (82b) face each other and the direction wherein the extending section (82) extends.

Description

Electronics

The present invention relates to an electronic device having a light guide member, such as an LED, arranged to receive light from a light source.

Some conventional electronic devices turn on a light source such as an LED according to the operating state. Among such electronic devices, there is a type in which the light source is disposed in the housing, and the light guide member guides the light of the light source to the surface of the housing (for example, JP-A-2008-66884). The light guide member is arranged to be exposed at the housing surface. The light incident on the light guide member travels while being reflected in the light guide member, and is emitted from the surface (hereinafter, light emitting surface) exposed on the housing surface.

When it is desired to use a long light guide member formed to extend from the light incident portion of the light source for the purpose of improving the appearance of the electronic device and improving the visibility of the indicator indicating the operating state of the electronic device There is. Light incident on such a light guide member travels in the extension direction of the light guide member while being reflected in the light guide member. For example, the incident light travels while reflecting between the light emitting surface and the back surface which is the surface opposite to the light emitting surface. Then, the light transmitted through the light emitting surface is emitted to the outside in the process to improve the appearance of the electronic device or to notify the user of the operation state of the electronic device.

However, light which does not reach the light emitting surface in order to travel while reflecting the surface perpendicular to both the light emitting surface and the back surface is not visible by the user because it is transmitted to such a vertical surface and emitted to the outside. It does not contribute to the purpose of improving the appearance of the electronic device or the visibility of the indicator. Therefore, if the amount of light emitted in this way is large, the utilization efficiency of the light source is poor, and it is necessary to take measures such as increasing the number of light sources.

In addition, depending on the incident direction of the light from the light source and the shape of the light guide member, the amount of light reflected from the back surface or other surface toward the light emitting surface is not sufficient, and the luminance of the emitted light is sufficient. There are cases where no position occurs on the light emitting surface.

This invention is made in view of the said subject, Comprising: The 1st objective has a light guide member formed so that it might be extended from the part into which the light of a light source injects, and the light of a light source is effectively made. It is about providing the electronic device which can be used.

A second object of the present invention is to provide an electronic device having a light guide member capable of suppressing the occurrence of a position with insufficient luminance on the light emitting surface.

In order to achieve the first object, an electronic device according to the present invention includes a light source, and a light guide member disposed so that the light of the light source is incident. The light guide member has an extending portion extending in a direction along the outer surface of the electronic device, and the extending portion has a light emitting surface exposed on the outer surface of the electronic device. Moreover, the back surface of the said extending part which is a surface on the opposite side to the said light emission surface contains the inclined surface inclined with respect to the said light emission surface. The inclined surface is formed so as to obliquely intersect a direction perpendicular to both the direction in which the light emitting surface and the back surface face each other and the extending direction of the extending portion.

According to the present invention, light traveling while reflecting between the surfaces perpendicular to the light emitting surface can also be reflected to the light emitting surface side by hitting the inclined surface. As a result, the utilization efficiency of the light source can be improved.

Moreover, in one aspect of the present invention, the inclined surface may be formed to extend along the extending direction of the extending portion, and the inclination degree of the inclined surface may be changed according to the position in the extending direction. According to this aspect, the brightness can be changed according to the position of the light emitting surface. As a result, the appearance of the electronic device can be improved.

In one aspect of the present invention, an operation unit for operating the electronic device may be disposed in front of the light emitting surface. According to this aspect, the operation unit can be illuminated.

In one aspect of the present invention, the electronic device further comprises a housing forming an outer surface of the electronic device, wherein the housing is formed with an opening for inserting a portable storage medium, and the extension portion is formed in the opening It may extend along. According to this aspect, the user can easily recognize the position of the opening for inserting the portable storage medium.

Further, in one aspect of the present invention, the light guide member may have an incident portion on which the light of the light source is incident, and the extending portion may be formed to extend from the incident portion. According to this aspect, it is possible to emit light from a wide range of the extending portion with a small number of light sources. Further, in this aspect, the incident portion may be disposed so that the light of the light source is incident from a direction perpendicular to both the direction in which the light emitting surface and the back surface face each other and the extending direction of the extending portion. .

Further, in one aspect of the present invention, the extension portion may have a curved portion curved along an outer surface of the electronic device, and the inclined surface may be formed in the curved portion. According to this aspect, it is possible to increase the light emitted from the light emitting surface of the curved portion.

In order to achieve the said 2nd objective, the electronic device which concerns on this invention is equipped with a light source and the light guide member arrange | positioned so that the light of the said light source may inject. The light guide member has an extending portion extending in a direction along the outer surface of the electronic device, and the extending portion includes a light emitting surface exposed on the outer surface of the electronic device and a surface opposite to the light emitting surface And the back side. The back surface has a curved surface that curves so as to be recessed toward the light emitting surface side.

According to the present invention, the light traveling in the extending direction in the light guide member easily strikes the curved surface provided on the back surface, and the brightness on the light emitting surface arrives at the light reflected on the curved surface. It can be increased. Therefore, by appropriately adjusting the position of the curved surface, it is possible to suppress the occurrence of a position where the luminance is insufficient.

In one aspect of the present invention, the extension portion may have a curved portion curved at a part thereof, and the curved surface of the back surface may be provided at the curved portion. According to this aspect, the luminance of the light emitting surface of the curved portion can be increased.

Further, in this aspect, the light guide member has an incident portion on which the light of the light source is incident, the extension portion is provided to extend from the incident portion, and the curved surface is incident on the curved portion. It may be formed in the vicinity of a part. By doing this, it is possible to further increase the brightness of the position closer to the incident portion of the bending portion. In this aspect, the curved portion may be curved such that the back surface is an outer surface of the curved portion. This can increase the amount of light reflected to the light emitting surface which is the inner surface of the curved portion.

It is a perspective view of an electronic device which is an example of an embodiment of the present invention. It is a front view of the principal part of the said electronic device. It is a perspective view of the front board which the said electronic device has, and the front part of a housing. It is an exploded perspective view of the above-mentioned front board. FIG. 5 is a cross-sectional view taken along the line V-V shown in FIG. 3; It is a rear view of the light guide member and front board which the said electronic device has, and the light guide member and front board are isolate | separated up and down in the same figure. It is an enlarged view of FIG. 5, and the part in which the light guide member was shown in the same figure is expanded. It is a side view of the above-mentioned light guide member. It is a perspective view which faces the said light guide member and front board from diagonally backward. It is a top view of the end of the above-mentioned light guide member. It is the perspective view of the said light guide member cut | disconnected in the middle of the extending part which the said light guide member has. It is a figure for demonstrating the reflection aspect of the light in a curved part. The figure (a-1) is a side view of the light guide member, and the figure (a-2) is a plan view of the light guide member. In these figures, the extension part which the said light guide member has is expanded and shown. Also, FIGS. (B-1) and (b-2) show light guide members to be compared, FIG. (B-1) is a side view thereof, and FIG. (B-2) is a side view thereof. It is a top view. It is a figure for demonstrating the reflection aspect of the light in the curved surface which a light guide member has.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an electronic device 1 which is an example of an embodiment of the present invention. FIG. 2 is a front view of the main part of the electronic device 1. FIG. 3 is a perspective view of the front board 10 and the front portion of the housing 7 of the electronic device 1, and FIG. 4 is an exploded perspective view of the front board 10. FIG. 5 is a cross-sectional view taken along the line V-V shown in FIG.

As shown in FIG. 1 or FIG. 2, the electronic device 1 has a housing 7 that constitutes the outer surface thereof. The housing 7 has a substantially box-shaped lower housing 70 opened upward and a substantially box-shaped upper housing 71 opened downward. The upper housing 71 is disposed to cover the lower housing 70 from above, and is assembled to the lower housing 70.

The upper housing 71 has a front board 10 at its front. Further, the upper housing 71 is disposed so as to cover the lower housing 70 from above, and has a housing body 72 that closes the lower housing 70 from above. The housing body 72 has an upper plate portion 72a facing the lower housing 70 in the vertical direction. Further, the housing body 72 has, at its front, a left front wall 72b and a right front wall 72c which are lowered toward the lower housing 70 from the edge of the upper plate 72a. The right front wall 72c extends rearward (in the Y1 direction) from the right end of the left front wall 72b and curves gently and is positioned rearward of the left front wall 72b. The electronic device 1 is, for example, a game device or an audio-visual device. Therefore, a media insertion port 72d for inserting a portable storage medium is formed in the right front wall portion 72c. The storage medium received by the media insertion port 72d is a disk-shaped storage medium (for example, an optical disk). Therefore, the media insertion port 72d is a long opening in the left-right direction. The right front wall 72 c may be formed with a plurality of slots for receiving a card-type storage medium such as a memory card.

The front board 10 is located in front of the right front wall portion 72c, and is disposed to face the lower housing 70 in the vertical direction, that is, generally horizontally. The front board 10, together with the housing body 72, closes the lower housing 70, which has an open upper shape, from above. In this example, since the right front wall 72c of the housing body 72 is located rearward of the left front wall 72b, an opening is provided between the right front wall 72c and the front edge of the lower housing 70. There is. The front board 10 closes this opening. The front board 10 has a substantially rectangular plate shape that is long in the left-right direction (X1-X2 direction). In particular, the front board 10 in this example is in the form of a plate in which one of the four corners (left rear corner) is gently curved (see FIG. 3). The right front wall 72 c is provided to stand on the edge of the front board 10 and is curved in conformity with the edge of the front board 10.

The front board 10 is provided with a plurality of (two in this example) operation buttons (operation units in the claims) 3. Further, as shown in FIG. 4, the front board 10 has an outer surface panel 2 that constitutes the outer surface of the electronic device 1, and a base board 4 that is disposed on the back surface (lower surface) side of the outer surface panel 2. Furthermore, the circuit board 6 is disposed on the back surface (lower surface) side of the front board 10.

The outer surface panel 2 is a thin plate-like member, and is formed of, for example, a resin. As described above, the front board 10 is substantially rectangular with one corner gently curved. The edge (hereinafter, side edge 2c) on one side (left side in this example) of the outer surface panel 2 extends rearward while curving gently from its front end and is connected to the rear edge 2b of the outer surface panel 2.

The operation button 3 is, for example, a power button for turning on / off the power of the electronic device 1 or a removal button for removing a storage medium such as an optical disk from the media insertion port 72 d. The outer surface panel 2 is formed with two holes 2 a having a shape corresponding to the operation button 3. The operation buttons 3 are respectively fitted in the holes 2a (see FIG. 5).

The base board 4 is a plate-like member having substantially the same shape as the outer panel 2. That is, the base board 4 is a substantially rectangular shape in which one corner is gently curved. The left side edge of the baseboard 4 extends rearward while being gently curved from the front end thereof and is connected to the rear edge of the baseboard 4. At the rear edge and the side edge of the base board 4, a support surface 41 on which a light guide member 8 described later is disposed is formed.

The outer panel 2 is attached to the surface of the base board 4. For example, the outer panel 2 is attached to the surface of the base board 4 by an adhesive. A hole 4a is formed in the base board 4, and the operation button 3 is disposed inside the hole 4a (see FIG. 5). The base board 4 is also formed of resin as in the case of the outer surface panel 2.

As shown in FIG. 4 or FIG. 5, the circuit board 6 is disposed in parallel to the baseboard 4 on the back side of the baseboard 4. On the surface of the circuit board 6, a contact member 61 which is pressed by the operation button 3 to be turned on / off is mounted. The contact member 61 is, for example, a tact switch. A connector 69 is attached to the back surface of the circuit board 6. The contact member 61 is connected to another circuit board built in the electronic device 1 through a wire connected to the connector 69.

The circuit board 6 is attached to the base board 4 by a plurality of (three in this example) screws 17. That is, the circuit board 6 is formed with three holes 6 a aligned in the left-right direction. On the other hand, screw holes are formed on the back surface of the base board 4. The screws 17 inserted into the holes 6 a from below are fixed to the screw holes of the base board 4.

A rubber 5 is disposed between the operation button 3 and the circuit board 6 to push the operation button 3 toward the outer panel 2. When the contact member 61 is positioned on the back surface (lower surface) side of the rubber 5 and the operation button 3 is pressed, the rubber 5 pushes the contact member 61. In this example, a convex portion 51 is formed on the back surface of the rubber 5. The convex portion 51 is located above the contact member 61. Therefore, when the operation button 3 is pressed, the convex portion 51 pushes the contact member 61 downward. The rubber 5 has a substantially annular base 52 at its outer peripheral edge. The base 52 is sandwiched between the base board 4 and the circuit board 6.

As shown in FIG. 4, a plurality of LEDs (Light Emitting Diodes) 67, 66, 68 are mounted on the circuit board 6 as light sources to be lit according to the operating state of the electronic device 1. The LEDs 66, 67, 68 are controlled to light up, for example, when the power of the electronic device 1 is in the on state.

The LED 67 is provided adjacent to the contact member 61 and located below the operation button 3 and the rubber 5. Two holes 5 a are formed in the rubber 5. The operation button 3 is formed with a mark (not shown) indicating that the operation button 3 is a power button or a storage medium eject button. This mark is formed of a translucent material that transmits light. Therefore, the light of LED67 injects into the translucent material of the operation button 3 through the hole 5a. As a result, the mark formed on the push button 3 lights up.

The LED 66 is mounted at a position behind the contact member 61. A hole 4c is formed in the base board 4, and a light transmitting member 19 for transmitting light is fitted in the hole 4c. The light transmitting member 19 is located above the LED 66. Therefore, the light of LED66 injects into the light transmission member 19, and makes the light transmission member 19 light (refer FIG. 5). In this example, the outer surface panel 2 is configured by a half mirror, and light transmitted through the light transmitting member 19 and the outer surface panel 2 is emitted to the outside of the electronic device 1.

The LED (light source in claims) 68 is provided at the end of the circuit board 6. The front board 10 is disposed so that the light of the LED 68 is incident, and is provided with a light guide member 8 for guiding the light of the LED 68 to one side in the left-right direction (in this example, rightward (X1 direction)). That is, light incident on the light guide member 8 travels in the extending direction of the light guide member 8 while being reflected in the light guide member 8. The light guide member 8 is formed of, for example, a light transmitting material such as an acrylic resin (for example, polymethyl methacrylate resin (PMMA)) or a polycarbonate resin (PC) whose transmittance and turbidity of light are adjusted. It is done.

FIG. 6 is a rear view of the light guide member 8 and the front board 10. In the figure, the light guide member 8 and the front board 10 are shown separated vertically. FIG. 7 is an enlarged view of FIG. 5, in which the part where the light guide member 8 is shown is enlarged. FIG. 8 is a side view of the light guide member 8. FIG. 9 is a perspective view of the light guide member 8 and the front board 10 obliquely from the rear. FIG. 10 is a plan view of an end portion of the light guide member 8, and FIG. 11 is a perspective view of the light guide member 8 cut in the middle of the extension portion 82 of the light guide member 8.

As shown in FIG. 3 or FIG. 4, the light guide member 8 has an incident portion 81 to which the light of the LED 68 is incident at its end. In this example, the incident part 81 is located at the front left corner of the front board 10. Further, since the light guide member 8 is in the shape of an elongated bar, the light guide member 8 includes the extending portion 82 extending in the direction along the outer surface of the electronic device 1 from the incident portion 81. In this example, the extension portion 82 is the lower edge of the right front wall 72c of the upper housing 71 constituting the outer surface of the electronic device 1, and the side edge 2c and the trailing edge of the outer panel 2 likewise constituting the outer surface of the electronic device 1. It extends in the left-right direction along 2b.

The light guiding member 8 is disposed on the edge of the base board 4. Specifically, as shown in FIG. 6 or FIG. 9, the baseboard 4 has a support surface 41 at the curved left edge and the rear edge. The support surface 41 protrudes from the rear edge 2 b and the side edge 2 c of the outer panel 2. The light guide member 8 is disposed on the support surface 41 (see FIG. 7).

As shown in FIG. 8, the LED 68 is disposed below the incident portion 81, and the incident portion 81 has an incident surface 81 a facing the LED 68 on the lower surface thereof. A hole 41a is formed at the end 41b of the support surface 41 (see FIG. 9), and the incident surface 81a is disposed inside the hole 41a. The light of the LED 68 is incident on the incident surface 81 a from below.

Moreover, as shown in FIG. 9, the incident part 81 has the reflective surface 81b above the incident surface 81a. The reflection surface 81 b is inclined with respect to the light incident surface 81 a so that the light incident from the light incident surface 81 a is reflected toward the extending portion 82. In this example, the reflective surface 81 b is inclined so as to be higher from the lower edge 81 c located closer to the tip of the light guide member 8 toward the extending portion 82. In addition, the reflecting surface 81 b is formed substantially flat.

As shown in FIG. 2, the extending portion 82 extends substantially in the left-right direction. Further, as described later, light traveling in the light guide member 8 in the extending direction is emitted forward from the light emitting surface 82 a of the extending portion 82. On the other hand, the light of the LED 68 is incident on the incident portion 81 from below. Therefore, the direction in which light is incident on the light guide member 8 is perpendicular to the extending direction of the light guide member 8 and the direction in which the light emitting surface 82 a emits light.

As shown in FIG. 3, the extending portion 82 is provided to surround the front board 10. That is, the extending portion 82 extends from the front left corner of the front board 10 where the incident portion 81 is located to the corner located on the diagonal of the target corner, that is, the rear right corner. Further, in this example, the side edge 2c of the outer panel 2 and the lower edge of the right front wall 72c of the upper housing 71 are gently curved. The extending portion 82 is curved along the side edge 2 c of the outer panel 2 and the lower edge of the right front wall 72 c from the incident portion 81.

That is, as shown in FIG. 4 or 10, the extending portion 82 has a curved portion 82e located at the end of the extending portion 82 and extending obliquely rearward from the incident portion 81. The curved portion 82e is curved along the side edge 2c of the outer panel 2 and the lower edge of the right front wall 72c. In addition, the extending portion 82 has a rectilinear portion 82 f extending substantially linearly from the curved portion 82 e along the rear edge 2 b of the outer surface panel 2. The light guide member 8 has a wall 83 standing along the side edge 2 c of the outer surface panel 2 inside the incident portion 81. The wall 83 extends forward (in the Y2 direction) from the extending portion 82.

As shown in FIG. 7, the extending portion 82 has a light emitting surface 82 a facing the front of the electronic device 1. The light emitting surface 82 a is provided from the end on the incident portion 81 side to the tip 82 k in the extending portion 82. The light emitting surface 82 a is exposed on the outer surface of the electronic device 1. That is, the height of the upper surface 82 g of the extending portion 82 is higher than the surface of the outer surface panel 2. The right front wall 72 c of the housing 7 is disposed on the upper surface 82 g of the extension 82. Therefore, the extension portion 82 is exposed between the surface of the outer surface panel 2 and the lower edge of the right front wall 72c to form a boundary between the front board 10 and the right front wall 72c (see FIG. 2).

As described above, the operation buttons 3 are provided on the base board 4 and the outer panel 2. The operation button 3 is located in front of the light emitting surface 82a. Further, a media insertion port 72d which is long in the left-right direction is formed in the right front wall portion 72c. The extending portion 82 extends in the direction along the media insertion port 72d below the media insertion port 72d (see FIG. 2).

As shown in FIG. 7 or 11, in addition to the light emitting surface 82a, the extending portion 82 has a back surface 82b opposite to the light emitting surface 82a, an upper edge of the light emitting surface 82a, and an upper edge of the back surface 82b. And a lower surface 82h between the lower edge of the light emitting surface 82a and the lower edge of the back surface 82b. In this example, the upper surface 82g and the lower surface 82h are formed perpendicularly to the light emitting surface 82a. The curved portion 82e described above is curved such that the back surface 82b is the outer surface of the curved portion 82e and the light emitting surface 82a is the inner surface (see FIG. 10).

The back surface 82b includes an inclined surface 82c facing the light emitting surface 82a in a state of being inclined with respect to the light emitting surface 82a, and a front facing 82d facing the light emitting surface 82a. In this example, the facing surface 82d is parallel to the light emitting surface 82a. The inclined surface 82c is in the direction in which the light emitting surface 82a and the back surface 82b face each other (the direction perpendicular to the light emitting surface 82a (the direction indicated by D1 in FIG. 7) and the extending direction of the extending portion 82 (the direction indicated by D2 in FIG. 11). It is formed to obliquely intersect with the direction perpendicular to both sides (direction shown by D3 in FIG. 7) In this example, the inclined surface 82c is located at the top of the back surface 82b, and the front facing 82d is the back surface The inclined surface 82c is inclined so that the upper edge 82i of the inclined surface 82c is closer to the light emitting surface 82a than the lower edge 82j, that is, the upper portion of the extension 82 is located. Is formed such that the thickness of the extension 82 (the distance between the light emitting surface 82a and the inclined surface 82c) gradually decreases as it goes upward, as shown in FIG. Slope 82 of Is generally linearly extended from the upper edge 82i to the lower edge 82j, the sloped surface 82c may be processed to increase the surface roughness, whereby light on the sloped surface 82c is It becomes easy to scatter.

As shown in FIG. 8 or 10, the inclined surface 82c is formed with a curved portion 82e provided at a position closer to the incident portion 81 in the extending portion 82 and a rectilinear portion 82f. As shown in FIG. 8, light incident from below on the incident portion 81 is reflected by the reflective surface 81 b and travels toward the extending portion 82. The light reflected by the reflective surface 81 b is reflected at an angle of incidence with respect to the reflective surface 81 b or an angle according to the position on the reflective surface 81 b to which the light reaches. Then, the light travels in the extending direction of the extending portion 82 while reflecting between the upper surface 82 g and the lower surface 82 h of the extending portion 82. The light is reflected toward the light emitting surface 82 a by hitting the inclined surface 82 c, and the light transmitted through the light emitting surface 82 a is emitted to the front of the electronic device 1.

FIG. 12 is a view for explaining a reflection mode of light on the inclined surface 82c of the curved portion 82e. The figure (a-1) is a side view of the light guide member 8. The figure (a-2) is a top view of the light guide member 8, and the curved part 82e is shown enlarged in the figure (a-2). In these figures, the inclined surface 82c is shaded. Also, FIGS. (B-1) and (b-2) show the light guide member 850 to be compared, and FIG. (B-1) is a side view of the light guide member 850, and FIG. 2 is a plan view of the light guide member 850. FIG. Although the light guide member 850 includes the curved portion 852e, the curved portion 852e is not formed with an inclined surface. In addition, the line La shown in the figures (a-1) and (a-2) and the line Lb shown in the figures (b-1) and (b-2) were incident on the light guide members 8 and 850 from the LED 68. It is a line which shows the example of the advancing direction of light, and the light shown by these lines is incident on the reflective surfaces 81b and 850b at the same angle.

As shown by the line Lb in (b-1) and (b-2) in the same figure, the light guide member 850 also enters the incident portion 851 from below as in the light guide member 8, and is reflected by the reflection surface 851b. The transmitted light travels in the bending portion 852e while reflecting between the upper surface 852g and the lower surface 852h of the extending portion 852. The light traveling inside the curved portion 852e is reflected toward the light emitting surface 852a at the position Pb on the back surface 852b of the curved portion 852e, and the light transmitted through the light emitting surface 852a is emitted from the light emitting surface 852a. On the other hand, in the light guide member 8, as shown by the line La in (a-1) and (a-2) in the figure, the light is reflected by the reflective surface 81b and reflected between the upper surface 82g and the lower surface 82h of the extending portion 82 The light traveling while reflecting is reflected toward the light emitting surface 82a at a position Pa on the inclined surface 82c. As a result, the position on the light emitting surface 82a reached by the light indicated by the line La is closer to the incident portion 81 than the position on the light emitting surface 852a reached by the light indicated by the line Lb. As described above, in the curved portion 82e of the light guide member 8, the inclined surface 82c is formed, so that more light reaches a position on the light emitting surface 82a near the incident portion 81. Therefore, the light emitting surface of the curved portion 82e The amount of light emitted from 82a can be increased.

In addition, the inclined surface 82c is also formed on a rectilinear portion 82f extending from the curved portion 82e. As shown in FIG. 7, light reflected between the upper surface 82 g and the lower surface 82 h in the rectilinear portion 82 f is also reflected toward the light emitting surface 82 a by hitting the inclined surface 82 c.

As described above, when light traveling in the extending direction of the extending portion 82 hits the inclined surface 82c, the light is reflected toward the light emitting surface 82a. Then, the light transmitted through the light emitting surface 82a is emitted forward. As shown in FIG. 11, the inclined surface 82 c that reflects light toward the light emitting surface 82 a is formed to extend in the direction along the extension direction of the extension part 82. In particular, in this example, the inclined surface 82c is formed from one end of the extending portion 82 to the other end. Therefore, light is emitted from the whole of the light emitting surface 82a. The light emitting surface 82a is processed to increase the surface roughness, and the reflectance of the light emitting surface 82a is reduced. As a result, the light reflected from the other surface such as the inclined surface 82c and reaching the light emitting surface 82a is easily transmitted through the light emitting surface 82a. In particular, in this example, the surface roughness is processed over the entire surface of the light emitting surface 82a, that is, from the end of the light emitting surface 82a on the incident portion 81 side to the tip 82k.

The inclination degree θ (the angle of the inclined surface 82c with respect to the direction D3 (see FIG. 7)) of the inclined surface 82c changes in accordance with the position of the inclined surface 82c in the extending direction. In this example, the inclination degree θ of the inclined surface 82c becomes smaller as it approaches the tip end 82k of the extending portion 82. In particular, at the tip 82k, the inclined surface 82c is substantially parallel to the light emitting surface 82a. Thus, the luminance of the light emitting surface 82a can be adjusted according to the position by changing the inclination degree θ of the inclined surface 82c in accordance with the position of the inclined surface 82c in the stretching direction. In this example, the luminance of the light emitting surface 82 a can be lowered as it approaches the tip 82 k of the light guide member 8. Thereby, the appearance of the electronic device 1 can be improved. Note that, as shown in FIG. 11, the width W2 of the opposite surface 82d gradually decreases toward the tip 82k, while the width W1 of the inclined surface 82c is maintained in the extending direction of the extending portion 82.

In addition, the extending portion 82 gradually becomes thinner as it approaches the tip 82 k. In this example, as shown in FIG. 6, the upper surface 82g of the extending portion 82 extends in the horizontal direction (the direction parallel to the outer panel 2), while the lower surface 82h extends toward the tip 82k and inclines upward. . Therefore, the height (the distance between the upper surface 82g and the lower surface 82h) of the extension portion 82 gradually decreases as it approaches the tip 82k.

The support surface 41 on which the light guide member 8 is placed is also inclined in accordance with the lower surface 82 h. That is, the position of the support surface 41 becomes higher gradually as it approaches its end. Therefore, the width W3 (see FIG. 7) of the portion exposed from the outer surface panel 2 of the light emitting surface 82a is maintained in the extending direction of the extending portion 82.

As shown in FIG. 10, in addition to the inclined surface 82c, the back surface 82b has a curved surface 82L curved so as to be recessed toward the light emitting surface 82a at a position closer to the incident portion 81 in the curved portion 82e. In this example, the curved surface 82L is located at the end of the curved portion 82e near the incident portion 81. The curved surface 82 </ b> L extends from the incident portion 81 in the extending direction of the extending portion 82. Further, in this example, the curved surface 82L is curved so as to be recessed toward the light emitting surface 82a in a plan view of the light guide member 8. That is, the curved surface 82L extends in the extending direction of the extending portion 82 while extending in the extending direction of the extending portion 82 from the incident portion 81 and gradually approaching the light emitting surface 82a as being farther from the incident portion 81 And a second portion R2 gradually separating from the light emitting surface 82a as the distance from the incident portion 81 increases.

In this example, the curved portion 82e generally becomes thinner gradually as it goes away from the incident portion 81 (as it gets closer to the tip 82k of the extending portion 82), that is, as it gets farther from the incident portion 81, its thickness (Distance between light emitting surface 82a and curved surface 82L) W4 is formed to be small. In the first portion R1 of the curved surface 82L, the thickness W4 of the curved portion 82e tends to decrease as the distance from the incident portion 81 increases. Further, in the second portion R2 of the curved surface 82L, the tendency for the thickness W4 to decrease as the distance from the incident portion 81 decreases is reduced. Here, in the first portion R1, the thickness W4 of the curved portion 82e decreases with distance from the incident portion 81. Further, in the second portion R2, the thickness W4 of the curved portion 82e increases as the distance from the incident portion 81 increases. Then, in the portion beyond the second portion R2 (portion closer to the tip 82k than the second portion R2), the thickness W4 of the curved portion 82e gradually decreases with distance from the incident portion 81.

The curved portion 82e is curved such that the back surface 82b is the outer surface of the curved portion 82e and the light emitting surface 82a is the inner surface. In this example, the curved surface 82L is provided on the back surface 82b of the curved portion 82e, and the center O1 of the circle whose circumference is the light emitting surface 82a in the curved portion 82e and the center O2 of the circle whose circumference is the curved surface 82L are The light guide member 8 is located on the opposite side.

The light reflected toward the extending portion 82 at the incident portion 81 and traveling through the curved portion 82e strikes the curved surface 82L and is reflected toward the light emitting surface 82a of the curved portion 82e. Then, the light transmitted through the light emitting surface 82 a is emitted to the outside.

FIG. 13 is a view for explaining a reflection mode of light on the curved surface 82L. The light guide member 8 described above is shown in FIG. 6A, and the light guide member 800 to be compared is shown in FIG. In addition, in the same figure (a), in order to make an explanation intelligible, the curved surface which curved more largely than the curved surface 82L shown in FIG. 10 is shown.

The light guide member 800 is provided with the back surface 820b in which the curved surface 82L as described above is not formed. In the same manner as the light guide member 8, the light guide member 800 is provided with an incident portion 810 in which a reflective surface 810 b is formed. In the light guide member 800, the light reflected by the reflective surface 810b strikes the back surface 820b and is reflected toward the light emitting surface 820a. Similarly, in the light guide member 8, the light reflected by the reflecting surface 81b is reflected toward the light emitting surface 82a by hitting the curved surface 82L. In the light guide member 8, the curved surface 82L is curved so as to be recessed toward the light emitting surface 82a, so the incident angle of light on the curved surface 82L is larger than the incident angle of light on the back surface 820b of the light guide member 800. There is. Therefore, in the light guide member 8, light is reflected toward a position closer to the end of the light emitting surface 82a (a position closer to the incident portion 81) than the light guide member 800. As a result, in the light guide member 8, the brightness at a position near the end of the light emitting surface 82 a is increased compared to the light guide member 800.

As described above, in the electronic device 1, the back surface 82b of the extending portion 82 which is the surface opposite to the light emitting surface 82a includes the inclined surface 82c which is inclined with respect to the light emitting surface 82a. The inclined surface 82c is formed to obliquely intersect the direction D1 in which the light emitting surface 82a and the back surface 82 face each other and the direction D3 perpendicular to both the extending direction D2 of the extending portion 82.

According to such an electronic device 1, the light traveling in the extending direction of the extending portion 82 while reflecting on the surface perpendicular to the light emitting surface 82a (the upper surface 82g and the lower surface 82h in the above description) also hits the inclined surface 82c. The light is reflected toward the light emitting surface 82a. As a result, the utilization efficiency of the light emitted from the LED 68 can be improved.

Further, in the electronic device 1, the light guide member 8 has the extending portion 82 extending in the direction along the outer surface of the electronic device 1. The extending portion 82 has a light emitting surface 82 a exposed on the outer surface of the electronic device 1 and a back surface 82 b which is a surface opposite to the light emitting surface 82 a. The back surface 82b has a curved surface 82L curved so as to be recessed toward the light emitting surface 82a.

Therefore, according to the electronic device 1, as described with reference to FIG. 12, the brightness can be increased at the position on the light emitting surface 82a where the light reflected on the curved surface 82L comes. Therefore, by appropriately adjusting the position of the curved surface 82L, it is possible to suppress the occurrence of a position where the luminance is insufficient.

The present invention is not limited to the electronic device 1 described above, and various modifications are possible.

For example, in the above description, the inclined surface 82c is formed from one end of the extending portion 82 to the other end. However, the inclined surface 82 c may be formed only on a part of the extending portion 82. For example, the inclined surface 82c may be formed at a position where more luminance is required in the extending portion 82.

In the above description, the inclined surface 82c linearly extends from the upper edge 82i to the lower edge 82j. However, the inclined surface 82c may be curved. That is, the inclined surface 82c may extend downward while curving from the upper edge 82i to reach the lower edge 82j.

In the above description, the curved surface 82L is formed in the curved portion 82e. However, the curved surface 82L may be formed in the straight advancing portion 82f.

Claims (11)

  1. What is claimed is: 1. An electronic device comprising: a light source; and a light guide member arranged to receive light from the light source,
    The light guide member includes an extending portion extending in a direction along an outer surface of the electronic device.
    The extending portion has a light emitting surface exposed on the outer surface of the electronic device,
    The back surface of the extended portion, which is the surface opposite to the light emitting surface, diagonally intersects the direction perpendicular to both the direction in which the light emitting surface and the back surface face each other and the extending direction of the extended portion. Including formed slopes,
    An electronic device characterized by
  2. In the electronic device according to claim 1,
    The inclined surface is formed to extend along the extending direction of the extending portion, and the inclination degree of the inclined surface is changed according to the position in the extending direction.
    An electronic device characterized by
  3. In the electronic device according to claim 1,
    An operating unit for operating the electronic device is disposed in front of the light emitting surface.
    An electronic device characterized by
  4. In the electronic device according to claim 1 or 3,
    It further comprises a housing that constitutes the outer surface of the electronic device,
    The housing is formed with an opening for inserting a portable storage medium,
    The extension portion extends along the opening.
    An electronic device characterized by
  5. In the electronic device according to claim 1,
    The light guide member has an incident part on which the light of the light source is incident,
    The extending portion is formed to extend from the incident portion.
    An electronic device characterized by
  6. In the electronic device according to claim 5,
    The incident portion is disposed such that the light of the light source is incident from a direction perpendicular to both the direction in which the light emitting surface faces the back surface and the extending direction of the extending portion.
    An electronic device characterized by
  7. In the electronic device according to claim 1,
    The extension portion has a curved portion curved along the outer surface of the electronic device,
    The inclined surface is formed in the curved portion,
    An electronic device characterized by
  8. What is claimed is: 1. An electronic device comprising: a light source; and a light guide member arranged to receive light from the light source,
    The light guide member includes an extending portion extending in a direction along an outer surface of the electronic device.
    The extending portion has a light emitting surface exposed on the outer surface of the electronic device, and a back surface which is a surface opposite to the light emitting surface.
    The back surface has a curved surface that curves so as to be recessed toward the light emitting surface side.
    An electronic device characterized by
  9. In the electronic device according to claim 8,
    The extension portion has a curved portion that curves in part thereof,
    The curved surface on the back surface is provided on the curved portion,
    An electronic device characterized by
  10. In the electronic device according to claim 9,
    The light guide member has an incident part on which the light of the light source is incident,
    The extending portion is provided to extend from the incident portion,
    The curved surface is formed closer to the incident portion in the curved portion.
    An electronic device characterized by
  11. The electronic device according to claim 9 or 10
    The curved portion is curved such that the back surface is an outer surface of the curved portion.
    An electronic device characterized by
PCT/JP2010/051101 2009-04-02 2010-01-28 Electronic apparatus WO2010113535A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009090566A JP5101555B2 (en) 2009-04-02 2009-04-02 Electronics
JP2009090567A JP5101556B2 (en) 2009-04-02 2009-04-02 Electronics
JP2009-090567 2009-04-02
JP2009-090566 2009-04-02

Publications (1)

Publication Number Publication Date
WO2010113535A1 true WO2010113535A1 (en) 2010-10-07

Family

ID=42827840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/051101 WO2010113535A1 (en) 2009-04-02 2010-01-28 Electronic apparatus

Country Status (1)

Country Link
WO (1) WO2010113535A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014119920A (en) * 2012-12-14 2014-06-30 Fujitsu Ltd Information processing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001075514A (en) * 1999-06-28 2001-03-23 Shinsei Sangyo Kk Luminous type sign display device
JP2002198567A (en) * 2000-12-25 2002-07-12 Hitachi Ltd Display device and portable information device using the same
JP2004061922A (en) * 2002-07-30 2004-02-26 Sony Corp Light reflection display method, light reflection display device and electronic equipment
JP2005202318A (en) * 2004-01-19 2005-07-28 Toshiba Corp Lighting unit of electronic equipment
JP2008527686A (en) * 2004-12-30 2008-07-24 ソニー エリクソン モバイル コミュニケーションズ, エービー Sealed frame, method of assembling and disassembling the frame

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001075514A (en) * 1999-06-28 2001-03-23 Shinsei Sangyo Kk Luminous type sign display device
JP2002198567A (en) * 2000-12-25 2002-07-12 Hitachi Ltd Display device and portable information device using the same
JP2004061922A (en) * 2002-07-30 2004-02-26 Sony Corp Light reflection display method, light reflection display device and electronic equipment
JP2005202318A (en) * 2004-01-19 2005-07-28 Toshiba Corp Lighting unit of electronic equipment
JP2008527686A (en) * 2004-12-30 2008-07-24 ソニー エリクソン モバイル コミュニケーションズ, エービー Sealed frame, method of assembling and disassembling the frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014119920A (en) * 2012-12-14 2014-06-30 Fujitsu Ltd Information processing device

Similar Documents

Publication Publication Date Title
JP5611512B2 (en) Light guide plate and display device having the same
KR100970268B1 (en) Backlihgt assembly and display apparatus having the same
JP6336708B2 (en) Light guide and keyboard backlight
US8662730B2 (en) Display apparatus and method of assembling the same
US8783884B2 (en) Display device for displaying two graphics
KR101013532B1 (en) Light guide plate
US9140843B2 (en) Changing graphics in an apparatus including user interface illumination
US7530725B2 (en) Light guide plate with reflective/refractive depressions, and backlight module using the same
EP2074451B1 (en) Luminaire arrangement with a cover layer
JP3186173U (en) Light-emitting lens structure
TWI444721B (en) Backlight module
US7067753B1 (en) Keypad light guide
EP0962694A1 (en) Planar light source unit
US20060285311A1 (en) Light-emitting device, backlight module, and liquid crystal display using the same
JP2005071610A (en) Light guide plate and plane light source device
JP4433467B2 (en) Surface light source device
US20100033944A1 (en) Polarized illumination lens device
US6805456B2 (en) Planar light source unit
US8317384B2 (en) Light guide film with cut lines, and optical keypad using such film
TW201213976A (en) Planar light source device and stereo display device
WO2012124569A1 (en) Surface illumination device
CN100575992C (en) Planar light source device and use therein light conductor
JP5295382B2 (en) Planar light source device and display device using the same
KR20110114311A (en) Backlight assembly and display apparatus having the same
US7329034B2 (en) Multi-level surface mounted lightpipe package design with LED light sources

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10758313

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10758313

Country of ref document: EP

Kind code of ref document: A1