JP2014045430A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize attractive illumination with a small and simple structure.SOLUTION: First and second light guide members 12, 13 having multiple flat inner surfaces 14, which enclose an LED 10 serving as a light emitter so as to be spaced away from the LED 10, are provided. A reflection surface 17 of the second light guide member 13 which is arranged a predetermined distance L away from the inner surface 14 is so formed that the light penetrating through the inner surfaces is reflected on the reflection surface 17.

Description

  The present invention relates to a portable terminal having a light guide member surrounding a light emitter.

  2. Description of the Related Art Conventionally, a portable terminal such as a cellular phone has improved the visibility by guiding light from a light-emitting body, which is shined at the time of receiving a call, by a light guide member.

  For example, in the light emitting device disclosed in Patent Document 1, the LED is covered with a light guide made of a polyhedron having a plurality of vertices having a certain distance from the center. The light guide material is covered with a shade member so as to give the impression that the shade member is filled with a transparent material.

JP 2009-129546 A

  However, the light guide as in Patent Document 1 is suitable for a lighting fixture that is not limited in size, but cannot be applied to a device that has a limited installation space, such as a portable terminal. Further, the LED is not at the center of the light guide, and the brightness center is shifted when viewed from below.

  The present invention has been made in view of such a point, and an object of the present invention is to realize an illumination having a good appearance with a small and simple configuration.

  In order to achieve the above object, in the present invention, the light emitter is surrounded by the inner surface of the light guide member, and the light guide member is provided with a reflective surface at a distance from the inner surface.

Specifically, in the first invention,
A light emitter;
A light guide member having an inner surface surrounding the light emitter at a distance from the light emitter;
A reflective surface formed on the light guide member and disposed at a predetermined distance from the inner surface;
And a housing to which the light guide member is attached.

  According to said structure, the light which permeate | transmitted the inner surface is reflected on the reflective surface of the light guide arrange | positioned at predetermined distance from the inner surface, and since a light-emitting body looks floating, it looks good.

In the second invention, in the first invention,
The light guide member is composed of a plate-shaped first light guide member and a second light guide member each having a plurality of flat inner surfaces,
A wiring connected to the light emitter is sandwiched between the first light guide member and the second light guide member.

  According to said structure, while dividing a light guide member into two plate-shaped members, while becoming easy to arrange | position a light-emitting body and its wiring in the inside, a compact structure is attained. In addition, since the light guide has a plurality of flat inner surfaces, the light emitted from the light emitter is repeatedly reflected in a complicated manner, and the shade by the wiring can be eliminated, so that it looks better. Furthermore, the light transmitted through the inner surface is reflected by the reflecting surface of the light guide disposed at a predetermined distance from the inner surface, so that it looks as if a polyhedron consisting of a plurality of flat inner surfaces appears to float. .

In the third invention, in the second invention,
The light emitter is an LED disposed only on one surface of a transparent or translucent flexible substrate.

  According to said structure, LED which is a light-emitting body can be easily installed with a transparent or translucent flexible substrate. Since the light guide has a plurality of flat inner surfaces, the light emitted from the LED is repeatedly reflected in a complex manner, and even if the LED is provided only on one side of the flexible substrate, it is difficult to shade the back side of the LED. .

In a fourth invention, in any one of the first to third inventions,
The inner surface is coated with a coating that reduces the transmittance.

  According to the above configuration, the coating can appropriately adjust the transmittance on the inner surface to easily prevent direct viewing of the illuminant, and a desired light can be obtained by adding a color.

  As described above, according to the present invention, the light guide member is formed with the inner surface surrounding the light emitter with a distance from the light emitter, and the reflective surface is provided with a predetermined distance from the inner surface. In addition, it is possible to realize a good-looking illumination with a simple configuration.

FIG. 3 is an enlarged cross-sectional view taken along line II in FIG. 2. It is the perspective view which looked at the mobile telephone concerning the embodiment of the present invention from the front side. It is the disassembled perspective view which looked at the mobile telephone from the front side. It is the disassembled perspective view which looked at the mobile telephone from the back side. The transparent flexible board | substrate is shown, (a) is the expansion perspective view seen from the front side, (b) is the expansion perspective view seen from the back side. It is the expansion perspective view which looked at the 1st light guide member from the back side. It is the expansion perspective view which looked at the 2nd light guide member from the front side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a mobile phone 1 as a mobile terminal according to an embodiment of the present invention. The mobile phone 1 includes a front side cabinet 3 into which a display unit 2 is fitted on the front side, and a back side covering the back side. Cabinet 4 is provided. Furthermore, the back surface of the back side cabinet 4 is covered with a rear cover 5 (not shown in FIGS. 1 and 2).

  An LED 10 as a light emitter is provided at the lower end of the mobile phone 1. LED10 is affixed on the front side of the transparent flexible substrate 11 by which wiring was formed in the transparent resin substrate shown in FIG. The LED 10 may be provided not on the front surface of the transparent flexible substrate 11 but on the back surface or on both surfaces.

  The LED 10 is covered with a first light guide member 12 on the front side shown in FIG. 6 and a second light guide member 13 on the back side shown in FIG. Each of the first light guide member 12 and the second light guide member 13 has a plate shape extending in the left-right direction, and appears on the exterior in a state of being bonded to the lower end of the mobile phone 1. As shown in FIG. 1, the first light guide member 12 is fixed by pressing the recess 12 a provided at the upper end of the first light guide member 12 with the glass panel 2 a of the display unit 2. The first light guide member 12 and the second light guide member 13 are made of, for example, a transparent resin molded product.

  The first light guide member 12 and the second light guide member 13 each have a plurality of flat inner surfaces 14 that surround the LED 10 at a distance from the LED 10, and hold the LED 10 in a state where the transparent flexible substrate 11 is sandwiched. For example, it is surrounded by an inner surface 14 that forms a hexahedral space. The inner surface 14 is coated with a coating that reduces the transmittance. In the present embodiment, a large number of inner surfaces 14 are arranged particularly on the first light guide member 12 on the LED 10 side. For example, the entire inner surface 14 is coated by vapor deposition so as to perform appropriate transmission and reflection.

  As shown in FIGS. 3 and 4, the front surface of the transparent flexible substrate 11 and the first light guide member 12 are bonded with a transparent first double-sided tape 15, and the back surface of the transparent flexible substrate 11 and the second light guide member 13. Is adhered with a transparent second double-sided tape 16. A portion of the first double-sided tape 15 corresponding to the LED 10 is formed with an opening 15 a so as not to contact the LED 10. The first and second double-sided tapes 15 and 16 are made of waterproof tape so that liquid such as water does not enter between the first light guide member 12 and the second light guide member 13. The first and second double-sided tapes 15 and 16 may be translucent. Thus, since the light guide member is divided into two, it is easy to arrange the LED 10 and the transparent flexible substrate 11 therein.

  As shown in FIGS. 1 and 5, the base end side of the extension portion 11a of the transparent flexible substrate 11 extending from the mating surfaces of the first and second light guide members 12 and 13 is made of a rectangular frame-shaped rubber or the like. Covered with a waterproof patch 18. The waterproof patch 18 further prevents liquid from entering the inside. The extension 11a is connected to a main board (not shown).

  As shown in FIG. 1, the contact surface between the front side cabinet 3 and the back side cabinet 4 of the second light guide member 13 functions as a reflective surface 17. When viewed from the side surface, the reflection surface 17 has an appropriate inclination angle that inclines downward toward the back side. The base end 17a on the front side and the upper base end 14a on the inner surface of the second light guide member 13 The distance L is secured such that the reflected light does not overlap the inner surface 14 as much as possible when viewed from below the mobile phone 1.

  When the LED 10 is caused to emit light in the mobile phone 1 configured as described above, the light is partially reflected on the inner surface of the first light guide member 12 and partially transmitted as indicated by an arrow in FIG. The reflected light reaches the inner surface 14 of the second light guide member and is partially reflected again. Since the reflected light is directed toward the back side of the LED 10, even if the LED 10 is provided only on the front surface of the transparent flexible substrate 11, the LED 10 is not shaded and looks good.

  Then, the light transmitted through the inner surface 14 of the second light guide member 13 reaches the reflection surface 17 of the second light guide member 13 and is totally reflected. By looking at the reflected light, it looks as if a polyhedron formed of a plurality of flat inner surfaces 14 appears to float.

  Since the inner surface 14 is coated with a coating that reduces the transmittance, direct viewing of the LED 10 can be easily prevented, and no glare is felt. Moreover, favorite light can be obtained by adding color.

  Therefore, according to the mobile terminal according to the present embodiment, it is possible to realize illumination with good appearance with a small and simple configuration.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the said embodiment, although the 1st and 2nd light guide members 12 and 13 each had the some flat inner surface 14, you may have each curved inner surface, for example, a spherical surface. . In this case, since reflection is difficult to occur, the transmittance on the inner surface is appropriately reduced to reduce glare, and when the shade of the LED 10 is to be hidden, the LED 10 is provided on both front and back surfaces of the transparent flexible substrate 11. What is necessary is just to provide. Even in this case, by looking at the light reflected by the reflecting surface 17, it looks as if the sphere is floating.

  In the above embodiment, the LED 10 is provided on the transparent flexible substrate 11. However, the LED 10 may be disposed between the first light guide member 12 and the second light guide member 13 through a very thin conductor.

  In the above embodiment, the mobile terminal is the mobile phone 1, but it is a PHS (Personal Handy-phone System), a PDA (Personal Digital Assistant), a smartphone, a personal computer, a mobile tool, an electronic dictionary, a calculator, a game machine, and the like. Also good.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention is useful for a mobile terminal such as a mobile phone having a light guide member surrounding a light body.

1 Mobile phone (mobile terminal)
2 display section
2a glass panel
3 Front cabinet (housing)
4 Back side cabinet (housing)
5 Rear cover
10 LED (light emitter)
11 Transparent flexible substrate (wiring)
12 First light guide member
13 Second light guide member
14 Inside
14a Upper base end
15 First double-sided tape
15a opening
16 Second double-sided tape
17 Reflecting surface
17a proximal
18 Waterproof patch

Claims (4)

A light emitter;
A light guide member having an inner surface surrounding the light emitter at a distance from the light emitter;
A reflective surface formed on the light guide member and disposed at a predetermined distance from the inner surface;
A portable terminal comprising: a housing to which the light guide member is attached. The mobile terminal according to claim 1,
The light guide member is composed of a plate-shaped first light guide member and a second light guide member each having a plurality of flat inner surfaces,
A portable terminal, wherein a wiring connected to the light emitter is sandwiched between the first light guide member and the second light guide member. The mobile terminal according to claim 2,
The light emitting body is an LED disposed on only one surface of a transparent or translucent flexible substrate. The mobile terminal according to any one of claims 1 to 3,
The mobile terminal according to claim 1, wherein the inner surface is coated with a coating that reduces transmittance.

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