JP3919511B2 - Light guide structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light guide structure of a light guide that displays a predetermined operation state by guiding light from a light source and diffusing and emitting light outward from a window provided in the case in an electronic device case.
[0002]
[Prior art]
Conventionally, in an electronic device, a light guide that emits light in accordance with a predetermined operation is provided on a predetermined surface of a case so that a user can easily check a predetermined operation state. The light guide is made of a transparent resin such as acrylic, and is mounted in the case so as to face the window portion of the case. And light sources, such as LED mounted in the circuit board in a case, are formed so that light may be emitted on the surface of a case by irradiating a light guide according to the predetermined operation | movement of an electronic device. Such a light guide structure is employed, for example, as an incoming lamp of a mobile communication terminal such as a PHS telephone device or a mobile phone device.
[0003]
On the other hand, a mobile communication terminal such as a PHS telephone device or a mobile phone device is provided with a speaker that emits a ringing tone. For example, Japanese Patent Laid-Open No. 10-42383 “Speaker fixing structure of a portable device” As described in the above, it is attached by being fitted into a speaker holder attached on a circuit board provided on the back side of the case.
[0004]
[Problems to be solved by the invention]
By the way, although the said light guide and the speaker holder are normally attached in the case as mentioned above, they are not integrated and are each a separate component. Therefore, when these light guides and speaker holders are attached, the number of parts becomes plural, and it takes time to assemble or disassemble. In addition, positioning between the light guide and the speaker holder and positioning of the light guide not only with respect to the speaker holder but also with respect to the case are necessary, which is difficult.
[0005]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a light guide structure that can improve work efficiency in assembly or disassembly and can easily perform positioning of the light guide. .
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is directed to a predetermined operating situation by guiding light from a light source and diffusing and emitting light outward from a window provided in the case in an electronic device case. A light guide structure of a light guide for displaying
In the case, a speaker holder for holding a speaker is provided,
The speaker holder and the light guide are integrally formed ,
Between the light guide and the window, a light diffusing material having a different color from the light guide is interposed,
The light diffusing material is printed with a non-transparent ink on the light guide side surface of the resin cover fitted in the window, and the speaker holder and the light guide are positioned on the resin cover. It is characterized by that.
[0007]
The invention of claim 2 is the light guide structure of claim 1 ,
An inclined portion that is inclined with respect to the speaker holder is formed at an end portion of the light guide that is integrally formed with the speaker holder, and light guided to the light guide from the inclined portion to the speaker holder side. It is characterized by being diffused toward .
[0008]
According to a third aspect of the present invention, there is provided a light guide for a light guide that displays a predetermined operation state by guiding light from a light source and diffusing and emitting light outward from a window provided in the case in an electronic device case. Structure,
In the case, a speaker holder for holding a speaker is provided,
The speaker holder and the light guide are integrally formed,
Of the one end portion of the light guide that is integrally formed with the speaker holder, an inclined portion that is inclined with respect to the speaker holder is formed on a surface facing the window portion, and the one end portion of the inclined portion. Has a circular arc shape, and the light guided to the light guide is diffused from the inclined portion toward the speaker holder .
[0009]
The invention of claim 4 is the light guide structure according to claim 3 ,
A light diffusing material having a color different from that of the light guide is interposed between the light guide and the window portion .
[0010]
The invention according to claim 5 is the light guide structure according to any one of claims 1 to 4,
The light guide and the speaker holder are made of milky white resin .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a closed state of a foldable mobile phone employing a light guide structure according to an embodiment of the present invention, FIG. 2 is a front view showing an opened state of the foldable mobile phone, and FIG. Fig. 4A is an exploded perspective view of the lid case, Fig. 4A is a cross-sectional view taken along the line AA of the case main body in Fig. 3, and Fig. 4B is a case main body in Fig. 3. FIG. 5A is a top view showing a structure in which the light guide and the speaker holder are integrally formed, and FIG. 5B is a cross-sectional view of FIG. It is a side view of a).
[0012]
As shown in FIGS. 1 and 2, a foldable mobile phone 1 employing a light guide structure according to an embodiment of the present invention includes a flat upper housing 2 and a lower housing 3, and the upper housing 2. Are connected to each other via a hinge mechanism 4. An opening / closing operation can be performed between the state in which the lower housing 3 is opened and the state in which the lower housing 3 is closed. A telescopic antenna 5 is provided on the back of the upper housing 2.
[0013]
A circuit board (not shown) on which a plurality of electronic components such as the key top switch 6 are mounted is provided in the upper casing 2.
[0014]
As shown in FIG. 3, the lower housing 3 includes a case main body 7 and a lid body 11, and a front glass is fitted into the lid body 11. In the lower housing 3, a plurality of electronic components such as the LCD 8 and the LEDs 9 and 9 are mounted, and a circuit board 10 and the like for electrically connecting them are provided.
[0015]
As shown in FIGS. 3 and 4 (a) and 4 (b), the case body 7 has two long through holes penetrating the case body 7 on the left and right sides. Resin covers 13 and 13 are fitted, and thereby window portions 12 and 12 are formed. In the window portions 12 and 12, light guides 14 and 14 are arranged along the window portions 12 and 12, respectively.
[0016]
The light guide 14 displays a predetermined operation state by guiding light from the LEDs 9 and 9 mounted on the circuit board 10 to diffuse and emit light outward from the window portion 12.
The light guide 14 is made of milky white resin, and efficiently guides the light emitted from the LEDs 9 and 9. Further, as shown in FIGS. 5 (a) and 5 (b), the shape of the light guide 14 is long, and the back surface of the light guide 14 (surface disposed on the window portion 12) is one side. It is formed so as to incline smoothly from one end to the other end.
[0017]
Further, as shown in FIGS. 3 and 5 (a), 5 (b), a speaker holder 16 for holding substantially disk-shaped speakers 15 and 15 is provided in the case body 7.
The speaker holder 16 is also made of a milky white resin like the light guides 14 and 14. By setting it to be milky white in this way, light can be efficiently guided, and light can be replenished in a portion where the light guides 14 and 14 are not located.
[0018]
Two circular arrangement holes 16a and 16a penetrating the speaker holder 16 are formed on the left and right sides of the speaker holder 16, and the speakers 15 and 15 are fitted into the arrangement holes 16a and 16a, respectively. Yes.
Further, the one end portions of the light guides 14 and 14 are integrally formed on the left and right sides of the edge portion of the speaker holder 16, respectively. The speaker holder 16 and the light guides 14 and 14 integrally molded in this way are fixed to the case main body 7 with a double-sided tape, and the window 12 is formed on the back surface of the speaker holder 16 and the back surfaces of the light guides 14 and 14. , 12 are located.
[0019]
An inclined portion 18 that is inclined with respect to the speaker holder 16 is formed on the back surface of the end portion of the light guides 14, 14 on the side formed integrally with the speaker holder 16. That is, the inclined portion 18 has an arc shape so as to protrude downward (see FIG. 5B).
By thus forming the ends of the light guides 14 and 14 in an arc shape, the light emitted from the LEDs 9 and 9 is diffused forward (arrow C side) toward the speaker holder 16 side, and the light guides 14 and 14 are diffused. 14 is not positioned with respect to the window portions 12 and 12 and a portion where light does not reach can be replenished, whereby the entire window portions 12 and 12 are irradiated with light.
[0020]
Further, as shown in FIGS. 3 and 4 (a) and 4 (b), a light diffusing material 17 having a color different from that of the light guides 14 and 14 is provided between the light guides 14 and 14 and the window portions 12 and 12. 17 is interposed. That is, the light diffusing materials 17 and 17 are formed on the surfaces of the transparent resin covers 13 and 13 fitted in the through holes formed in the case body 7 (surfaces on the side where the light guides 14 and 14 are attached). Printed with non-transparent ink.
The speaker holder 16 and the light guides 14 and 14 are positioned on the resin covers 13 and 13 (see FIG. 4B).
[0021]
On the other hand, two LEDs 9 and 9 mounted on the circuit board 10 are disposed on the circuit board 10 near the edge of the speaker holder 16 and almost directly below the light guides 14 and 14 (FIGS. 3 and 4). (See (a) and (b)).
The light from the LEDs 9 and 9 is incident on the light guides 14 and 14 and the speaker holder 16 to be diffused, and further, a light diffusing material interposed between the light guides 14 and 14 and the window portions 12 and 12. By diffusing at 17 and 17, light is emitted to the surface of the case body 7 through the window portions 12 and 12.
[0022]
Here, a mounting example of the light guides 14 and 14 and the speaker holder 16 will be described. As shown in FIG. 3, first, the window portion is formed by fitting the resin covers 13 and 13 into the through holes of the case body 7 with the side on which the light diffusing materials 17 and 17 are printed as the surface (upper side). 12 and 12.
[0023]
Next, the integrally formed light guides 14 and 14 and the speaker holder 16 are fixed with double-sided tape so that the light guides 14 and 14 are disposed along the window portions 12 and 12 (note that the light guides 14 and 14 are integrally formed). The light guides 14 and 14 and the speaker holder 16 are attached by reversing the front and back from the state of FIG.
[0024]
Next, the speakers 15 and 15 are fitted into the arrangement holes 16 a and 16 a of the speaker holder 16, respectively, and the circuit board 10 on which the LEDs 9 and 9 and the LCD 8 are mounted is mounted on the case body 7. 11 is inserted.
[0025]
According to the light guide structure according to the embodiment of the present invention, the light guides 14 and 14 are integrally formed with the speaker holder 16 that holds the speakers 15 and 15 provided in the case main body 7. The number of points can be reduced, and thus the work efficiency in assembly or disassembly can be improved.
Further, by positioning and fixing the speaker holder 16 at a predetermined position of the case body 7, positioning between the light guides 14 and 14 and the speaker holder 16 and positioning of the light guides 14 and 14 with respect to the case body 7 are facilitated. It can be carried out.
Furthermore, by forming the light guides 14 and 14 and the speaker holder 16 integrally, an efficient light guide structure can be obtained in a small space in a device having a limited space.
[0026]
Since the light guides 14 and 14 and the speaker holder 16 are made of milky white resin, the light emitted from the LEDs 9 and 9 can be efficiently guided. That is, the light guides 14 and 14 made of milky white resin and the speaker holder 16 of the present invention have better light diffusibility than conventional light guides made of transparent resin such as acrylic.
Further, the speaker holder 16 can also serve as the light guides 14 and 14, and can efficiently guide the light emitted from the LEDs 9 and 9.
Therefore, the brightness emitted from the surface of the case body 7 becomes stronger, and the user can easily check the operation status by the light emission of the light guides 14 and 14.
[0027]
Between the light guides 14 and 14 and the window portions 12 and 12, light diffusing materials 17 and 17 having colors different from those of the light guides 14 and 14 are interposed. The light irradiated from 14, 14 can be further diffused on the surface of the case body 7, and the brightness of the light can be further enhanced.
[0028]
In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can change suitably.
For example, in the embodiment of the present invention, the light guide structure is used for the incoming lamp of the foldable mobile phone 1, but it is also used for a predetermined lamp used in an electronic device such as a PHS phone, a personal computer, a modem, or a router. can do.
Moreover, the said light guides 14 and 14 and the speaker holder 16 are not limited to the shape mentioned above, It can change suitably.
[0029]
【The invention's effect】
According to the light guide structure of the present invention, work efficiency in assembly or disassembly can be improved, and positioning of the light guide can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a closed state of a foldable mobile phone for illustrating an embodiment of the present invention.
FIG. 2 is a front view showing an open state of the folding cellular phone.
FIG. 3 is an exploded perspective view of the lid case.
4A is a cross-sectional view taken along the line AA of FIG. 3 with the circuit board attached to the case body, and FIG. 4B is a circuit board attached to the case body of FIG. It is BB sectional drawing of a state.
5A is a top view showing a structure in which a light guide and a speaker holder are integrally formed, and FIG. 5B is a side view of FIG. 5A.
[Explanation of symbols]
1 Electronic equipment (foldable mobile phone)
7 Case (Case body)
9 Light source (LED)
DESCRIPTION OF SYMBOLS 10 Circuit board 12 Window part 14 Light guide 15 Speaker 16 Speaker holder 17 Light diffusing material 18 Inclined part

Claims (5)

In a case of an electronic device, a light guide structure of a light guide that displays a predetermined operation state by guiding light from a light source and diffusing and emitting light outward from a window provided in the case,
In the case, a speaker holder for holding a speaker is provided,
The speaker holder and the light guide are integrally formed ,
Between the light guide and the window, a light diffusing material having a different color from the light guide is interposed,
The light diffusing material is printed with a non-transparent ink on the light guide side surface of the resin cover fitted in the window, and the speaker holder and the light guide are positioned on the resin cover. A light guide structure characterized by that . The light guide structure according to claim 1,
An inclined portion that is inclined with respect to the speaker holder is formed at an end portion of the light guide that is integrally formed with the speaker holder, and light guided to the light guide from the inclined portion to the speaker holder side. A light guide structure that is diffused toward the surface. In a case of an electronic device, a light guide structure of a light guide that displays a predetermined operation state by guiding light from a light source and diffusing and emitting light outward from a window provided in the case,
In the case, a speaker holder for holding a speaker is provided,
The speaker holder and the light guide are integrally formed,
Of the one end portion of the light guide that is integrally formed with the speaker holder, an inclined portion that is inclined with respect to the speaker holder is formed on a surface facing the window portion, and the one end portion of the inclined portion. Is a circular arc shape, and the light guided to the light guide is diffused from the inclined portion toward the speaker holder . The light guide structure according to claim 3 ,
A light guide structure characterized in that a light diffusing material having a color different from that of the light guide is interposed between the light guide and the window portion . In the light guide structure in any one of Claims 1-4,
The light guide structure, wherein the light guide and the speaker holder are made of milky white resin .

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