JP2016072657A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light guide member that is easily assembled in an electronic apparatus and can lighten up a wider range.SOLUTION: An LED 10 is provided inside a through hole 3a for light guide member which is formed in a front-side cabinet 3. A light guide member 11 consisting of a translucent elastic member is pressed in the through hole 3 for light guide member from the side of the LED 10 to spread a tip part 11a thereof after passing through the through hole 3a for light guide member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic device having a light guide member that guides light from a light emitting unit inside a housing.

  Conventionally, for example, as shown in Patent Document 1, a translucent member for display which is formed of a translucent elastic member such as silicon polyurethane, and is integrally formed as a whole with a head and a body having a diameter smaller than that of the head. What is press-fitted into the mounting hole of the lower case from the outside or the inside thereof is known. This translucent member for display has an outer peripheral rib that holds liquid tightly between the mounting hole when pressed into the mounting hole of the lower case at the head, and between the head and the trunk, There is an abutting step portion that abuts against the receiving step portion of the lower case when press-fitted into the mounting hole. Furthermore, a latching rib is provided on the outer periphery of the front end of the body portion to prevent the fitting hole from coming off from the mounting hole when press-fitted into the mounting hole.

Japanese Utility Model Publication No. 7-10777

  In the electronic device disclosed in Patent Document 1, in the case of an embodiment that is press-fitted from the inside of the lower case, the outer diameter of the tip portion is substantially equal to the inner diameter of the mounting hole, and the light that has passed through the light guide member is approximately the mounting hole. It can only illuminate a narrow area. Further, when press-fitting from the outside of the lower case, although there is a retaining rib at the inserted end, there is a problem that it is easily deformed and easily pulled out because it is an elastic member.

  This invention is made | formed in view of this point, The place made into the objective is providing the light guide member which can be easily assembled and can illuminate a wider range.

  In order to achieve the above object, according to the present invention, the front end portion of the light guide member press-fitted into the light guide member through hole from the inside of the casing is expanded after passing through the light guide member through hole.

Specifically, in the present invention, a housing in which a through hole for a light guide member is formed,
A light emitting portion provided inside the through hole for the light guide member inside the housing;
A light guide member made of a light-transmitting elastic member, press-fitted into the light guide member through-hole from the light emitting portion side, and having a distal end portion that extends after passing through the light guide member through-hole.

  According to the above configuration, since the tip of the light guide member made of an elastic member is expanded after passing through the light guide member through-hole, the light is transmitted through the light-guide member through-hole even when attached from the inside of the housing. It is possible to guide light to a wider area. Since the light guide member made of an elastic member is press-fitted into the through hole for the light guide member, a waterproof effect can be easily obtained. Moreover, since the light guide member is composed of one member, the mounting operation is extremely easy. Furthermore, the distal end portion of the light guide member is press-fitted into the light guide member through-hole from the inside (light-emitting portion side) of the housing, so that the base end side is enlarged and the light guide member through-hole is pulled out to the outside. Can not be.

  As described above, according to the present invention, a light guide member made of a light-transmitting elastic member is press-fitted into the light guide member through-hole from the light-emitting portion side, and the tip portion is inserted into the light guide member through-hole. Since it spreads after passing, the light guide member can be easily assembled, and a wider range can be illuminated.

The light guide member which concerns on Embodiment 1 of this invention, and its periphery are shown, (a) is the perspective view which abbreviate | omitted the front side cabinet, (b) is sectional drawing. It is a perspective view which expands and shows a part of the state which removed the smart phone which concerns on Embodiment 1 of this invention, and its transparent cover. It is a perspective view which decomposes | disassembles and shows a smart phone. FIG. 4 is an enlarged perspective view of a portion IV in FIG. 3. (A) And (b) is an expansion perspective view of the light guide member seen from another angle, respectively. (A) shows the light direction of the comparative example 1 which does not provide chamfering, (b) is a schematic diagram which shows the light direction of Example 1 which provided chamfering. It is a schematic diagram which shows a mode that light reflects in the inclined surface of the recessed part for a deformation | transformation. It is sectional drawing which partially fractures | ruptures and shows the light guide member which concerns on Embodiment 2 of this invention, and its periphery. (A) is a perspective view which shows the light guide member which concerns on Embodiment 3 of this invention, (b) is the sectional drawing.

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

(Embodiment 1)
2 and 3 show a smartphone 1 as an electronic apparatus according to the first embodiment of the present invention, and the smartphone 1 includes a front-side cabinet 3 as a housing that houses the display unit 2 on the front side. The back side of the front side cabinet 3 is covered with a back side cabinet 4, and the back side is covered with a rear cover 5. For example, a rectangular plate-shaped battery 6 and a main board 7 are accommodated between the front cabinet 3 and the back cabinet 4. A sub board 8 including an antenna member and the like provided on the lower side is connected to the main board 7 by a flexible board 8a thereabove. The outer periphery of the front cabinet 3 is covered with a transparent or translucent decorative cover 9. The display unit 2 may be a liquid crystal display or an organic EL display, and may include a touch panel and a panel covering these.

  As shown in enlarged views in FIGS. 1, 2, and 4, a light guide member through hole 3 a (shown only in FIG. 1) is formed through the front cabinet 3, for example, in the lower right side surface. Yes. The light guide member through-hole 3a of the present embodiment has a substantially oval cross section, and a light guide member recess 3b is formed on the outside thereof. In addition, a mask recess 3c that is slightly recessed for attaching the mask tape 13 is formed at the periphery of the light guide member recess 3b. The mask tape 13 is made of, for example, a black foam base tape, has high followability in the thickness direction, and has light leakage and a waterproof effect.

  On the sub-substrate 8 corresponding to the inside of the light guide member through hole 3a, an LED 10 as a light emitting unit is mounted so as to illuminate the light guide member through hole 3a. The structure of LED10 is not specifically limited, You may be comprised by one LED and you may be comprised by many LED.

  The light guide member 11 is press-fitted into the light guide member through-hole 3a from the LED 10 side. The light guide member 11 is made of a light-transmitting elastic member such as silicon rubber or polyurethane, and is configured such that a front end portion 11a spreads after passing through the light guide member through hole 3a. An example of the light guide member 11 is silicon rubber having high transparency. As shown in an enlarged view in FIG. 5, the light guide member 11 includes a main body portion 11 b in which the proximal end side of the distal end portion 11 a is integrally connected. In the present embodiment, the main body 11b is thin and flat enough to prevent the light guide member through-hole 3a from passing therethrough. Waterproof ribs 11c are continuously formed on the outer periphery of the portion of the tip portion 11a that contacts the inner surface of the light guide member through hole 3a.

  The front end portion 11a of the light guide member 11 of the present embodiment is thin and flat on the front and back, and has a deformation recess 11d cut out in a V shape having a pair of inclined surfaces 11e. By providing the deformation recess 11d, it is easy to deform when passing through the light guide member through-hole 3a, thereby preventing plastic deformation. Moreover, the light from LED10 which passed this light guide member 11 is reflected by the inclined surface 11e.

  Further, the outer periphery of the distal end portion 11a of the light guide member 11 is chamfered 11f so that the outer shape is smaller than the proximal end side. The chamfer 11f facilitates insertion into the light guide member through hole 3a.

  A second light guide member 12 having an outer shape larger than that of the light guide member 11 is provided in the back of the light guide member 11 as viewed from the LED 10 (outside the through hole 3 a for the light guide member). For example, the second light guide member 12 is made of a transparent or translucent resin molded product such as acrylic (PMMA) or polycarbonate (PC), and on the inner side (the LED 10 side), the distal end portion 11a of the light guide member 11 is formed. An inner recess 12a is formed so as to envelop the. The second light guide member 12 is preferably polycarbonate in consideration of the difficulty of being scratched during handling. An inner chamfer 12b is formed on the outer periphery of the inner concave portion 12a of the second light guide member 12 so as to reflect light that has entered from the inner concave portion 12a to the outside. The light that has passed through the light guide member 11 is diffused outside the second light guide member 12. According to this configuration, the light can be further spread outward by the second light guide member 12.

  Next, effects other than the ease of inserting the chamfer 11f will be described with reference to FIG. FIG. 6A shows the light guide member 11 ′ of Comparative Example 1 that does not have the chamfer 11 f, and FIG. 6B shows the light guide member 11 ″ of Example 1 that has the chamfer 11 f. In order to compare the effects of the chamfer 11f alone, both do not have the deformation recess 11d. In Comparative Example 1 in FIG. 6A, light having an angle larger than the angle A is totally reflected on the outer peripheral surface of the tip, and therefore does not spread outside the angle A. On the other hand, in the case where the chamfer 11f is provided as in the first embodiment of FIG. 6B, the chamfer 11f is provided so that the outer periphery of the tip end portion is provided only when the angle is larger than the range of the angle B wider than the angle A. Since the light is totally reflected, light can be delivered at a wider angle B (B> A).

  Further, as shown in FIG. 7, the angle α of the inclined surface 11e is preferably about 45 degrees. At this time, the incident angle β of light from the LED 10 incident on the inclined surface 11e from the inside of the light guide member 11 is about 45 degrees. Here, in the material of the light guide member 11 described above, the critical angle is usually about 45 degrees. Therefore, the incident angle β is about the critical angle on the inclined surface 11e, and the transmitted light from the inside to the outside and the reflected light inside can be effectively used, and the diffusion effect is enhanced.

  Thus, in this embodiment, since the front-end | tip of the light guide member 11 which consists of an elastic member was made to spread after passing the through-hole 3a for light guide members, even when attaching from the inner side of the front side cabinet 3, light is transmitted. Light can be guided to an area wider than the through hole 3a for the light guide member.

  Further, since the light guide member 11 made of an elastic member having the waterproof rib 11c is press-fitted into the light guide member through hole 3a, a waterproof effect can be easily obtained.

  Moreover, since the light guide member 11 is comprised by one member, attachment work is very easy.

  Moreover, since the front-end | tip of the light guide member 11 is easy to deform | transform by the recessed part 11d for a deformation | transformation, press-fit operation | work is easy. Furthermore, a wider range can be illuminated by reflecting light to the outside by the inclined surface 11e of the deformation recess 11d.

  Moreover, since the front-end | tip part 11a of the light guide member 11 was made into the shape where the front and back were thin, the light guide member 11 of this embodiment can be provided also in the side surface of the thin smart phone 1. FIG.

  Therefore, according to the smartphone according to the present embodiment, the light guide member 11 can be easily assembled, and a wider range can be illuminated.

(Embodiment 2)
FIG. 8 shows Embodiment 2 of the present invention, which differs from Embodiment 1 in that the shape of the light guide member 111 is different. In the following embodiments, the same portions as those in FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  That is, in this embodiment, the shape of the distal end portion 111a of the light guide member 111 does not have the deformation concave portion 11d, so that the amount of hooking of the slip-off preventing claw cannot be increased. Not. However, the chamfer 11f can illuminate a wider area than the light guide member through hole 3a.

  In addition, since the second light guide member 12 is not provided, the light illuminating range cannot be further expanded, but since there is nothing other than the decorative cover 9 that blocks the light inside the decorative cover 9, bright light can be obtained. It is easy to be done.

  Also in the present embodiment, as in the first embodiment, the distal end portion 111a may be provided with a deformation concave portion and an inclined surface.

  As described above, the present embodiment is advantageous in terms of cost because it has a simpler structure than that of the first embodiment and can save space, and has a small number of parts and a small number of work steps.

(Embodiment 3)
FIG. 9 shows Embodiment 3 of the present invention, which differs from Embodiment 1 and Embodiment 2 in that the shape of the light guide member 211 is different. That is, the front end portion 211a of the light guide member 211 has a circular cross section. A main body 211b continuous with 211a has a cylindrical shape. A waterproof rib 211c is formed on the distal end portion 211a as in the above embodiments. Also in this embodiment, a chamfer 211f is formed on the outer periphery of the distal end portion 211a. The shape of the present embodiment is suitable for a part having a small thickness limit in an electronic device.

  Further, a deforming recess 211d having a substantially circular cross section is provided, and the tapered surface functions as the inclined surface 211e. This makes it possible to guide light over a wider range than when there is no deformation recess 211d. Further, the tip 211a is easily deformed by the deforming recess 211d that is recessed in a taper shape, so that it can be easily inserted into the through hole 3a for the light guide member.

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

  That is, in each of the above embodiments, some examples of the shape of the light guide members 1, 11, and 211 have been shown, but the present invention is not limited to these, and the cross section on the tip side is an ellipse or other polygonal shape. Also good.

  The light guide members 1, 11, and 211 are made of transparent or translucent elastic members. However, the surface of the light guide members 1, 11, and 211 may be diffused by roughening the surface by etching or the like to make the light way uniform. Good.

  In addition, a diffusing agent may be included in any of the light guide members 1, 11, 211 and the second light guide member 12, or a milky white material may be used. Thereby, the light diffusion effect can be further enhanced.

  In the above embodiment, the light guide members 1, 11, and 211 are made of highly transparent silicon rubber. However, a transparent bond is poured into the through hole for the light guide member and the recess for the light guide member of the housing to use the light guide member. It may be formed.

  In the above embodiment, the electronic device is the smartphone 1, but a tablet terminal, PHS (Personal Handy-phone System), PDA (Personal Digital Assistant), personal computer, mobile tool, wearable terminal, electronic dictionary, calculator, game machine, etc. It may be a small liquid crystal display, a liquid crystal television, a Blu-ray disc recorder, a DVD recorder, or the like.

  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. The technical features described in each embodiment can be combined with each other, and a new technical feature can be formed by combining them.

1 Smartphone (electronic equipment)
2 display section
3 Front cabinet (housing)
3a Through hole for light guide member
3b Recess for light guide member
3c Recess for mask
4 Rear cabinet
5 Rear cover
6 battery
7 Main board
8 Sub-board
8a Flexible substrate
9 Decorative cover
10 LED
11 Light guide member
11a Tip
11b Body
11c Waterproofing rib
11d Deformation recess
11e inclined surface
11f chamfer
12 Second light guide member
13 mask tape 111 light guide member 111a front end 211 light guide member 211a front end 211b main body 211c waterproofing rib 211d deformation recess 211e inclined surface 211f chamfering

Claims (6)

A housing in which a through hole for a light guide member is formed;
A light emitting portion provided inside the through hole for the light guide member inside the housing;
A light guide member made of a light-transmitting elastic member, press-fitted into the light guide member through-hole from the light-emitting portion side, and having a distal end portion that extends after passing through the light guide member through-hole. Features electronic equipment. The electronic device according to claim 1,
A concave portion for deformation is formed at the tip of the light guide member to facilitate deformation when passing through the through hole for the light guide member, and light from the light emitting portion that has passed through the light guide member. An electronic device, wherein an inclined surface that reflects light is formed. The electronic device according to claim 2,
The tip of the light guide member has a circular cross section,
2. The electronic apparatus according to claim 1, wherein the inclined surface is a tapered surface of a deforming recess having a substantially circular cross section. The electronic device according to any one of claims 1 to 3,
An electronic apparatus, wherein an outer periphery of a distal end of the light guide member is chamfered so that an outer shape is smaller than a base end side. In the electronic device according to any one of claims 1 to 4,
A second light guide member having an outer shape larger than that of the light guide member is provided in the back of the light guide member as viewed from the light emitting unit, and light that has passed through the light guide member is diffused. An electronic device characterized by that. The electronic device according to any one of claims 1 to 5,
An electronic device, wherein a waterproof rib is formed in a portion of the tip portion of the light guide member that contacts the inner surface of the light guide member through hole.

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