JP5234805B2 - Sound emission structure of housing and electronic device - Google Patents

Description

  The present invention relates to a sound emitting structure for a housing and an electronic device.

  In the mobile phone described in Patent Document 1, a speaker is provided inside the display unit housing, and a sound emission hole of the speaker is provided on the back surface of the display unit housing. In the mobile phone described in Patent Document 1, since the display unit casing can be folded on the operation unit casing, the operation unit casing is mounted on a mounting place such as a desk, and the display unit casing is mounted. If it is raised, the sound emission hole is not blocked at the mounting place, and the volume is not reduced.

JP 2003-158565 A

  However, since the installation location of the speaker is limited, it may be necessary to provide the speaker inside the operation unit housing and provide the sound emission hole of the speaker on the back surface of the operation unit housing. In this case, when the operation unit casing is placed on the placement location, the sound emitting hole is blocked by the placement location, the sound is blocked, and the volume is reduced.

  Therefore, an object of the present invention is to ensure a sound volume without blocking sound even when a housing is placed on a placement place.

In order to solve the above-described problems, according to the invention according to claim 1, the sound emission structure of the housing includes a housing placed at a placement place, a speaker housed in the housing, A recess provided on the mounting surface of the housing, a sound emitting hole of the speaker provided in the recess, and an edge of the recess, and sounds from the recess to the outside of the mounting surface of the housing. A sound guide section for guiding ; a second casing overlaid on the back surface of the casing opposite to the mounting surface of the casing; a hinge case coupled to the second casing; A pair of protrusions provided in a bifurcated state at the end and rotatably connected to the hinge case, and a second provided on the hinge case and facing the protrusion on the back side of the housing And the hinge case is disposed between the pair of protrusions with a gap between the case and an end of the housing. The sound guide part guides sound from the recess to a gap between the hinge case and the end of the casing, and the sound guided to the gap is guided to the back side of the casing by the gap. A second gap is formed between the projecting portion and the second projecting portion, and the sound guided to the rear surface side of the housing by the space between the hinge case and the end of the housing. The second gap leads the outside between the projecting portion and the second projecting portion .

According to a second aspect of the present invention, in the first aspect , when the placement surface of the casing is placed on the placement location, a third gap is formed between the protruding portion and the placement location. The sound guided to the gap between the hinge case and the end of the housing by the sound guide part is guided to the outside between the protruding part and the installation place by the third gap; did.

According to a third aspect of the present invention, in the first or second aspect , when the second casing is rotated together with the hinge case from a state where the second casing overlaps the back surface of the casing, the hinge case is the casing. It protruded from the mounting surface.

According to the invention which concerns on Claim 4 , the electronic device was equipped with the sound emission structure of the housing | casing as described in any one of Claim 1 to 3 .

  According to the present invention, even when the casing is placed on the placement place, the sound is not blocked and the sound volume can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which showed the structure of one Embodiment of the portable apparatus to which this invention is applied, and showed the folding state of the mobile telephone. It is the perspective view which showed the state which open | released the mobile telephone of FIG. 1 in the vertical direction. It is the perspective view which showed the state which open | released the mobile telephone of FIG. 1 in the horizontal direction. It is the perspective view which showed the movie style state of the mobile telephone of FIG. It is the figure which showed the hinge unit in the folding state of FIG. It is the figure which showed the method of wiring in the folding state of FIG. It is an expansion perspective view which combined the hinge unit of FIG. 5, and the wiring of FIG. It is a perspective view corresponding to the folding state of the hinge unit of FIG. It is the enlarged view which looked at the cellular phone of the folded state of Drawing 1 from the other end side. It is the figure which showed the screen and the direction of a camera in the vertical direction open state of FIG. It is the figure seen from the opposite side to FIG. It is the perspective view which showed the state which mounted the mobile telephone in the vertical direction open state of FIG. 2 in the mounting location. FIG. 9 is a diagram corresponding to a vertically opened state of the hinge unit of FIG. 8. It is the figure which showed the book style in the horizontal direction open | released state of FIG. It is a figure corresponding to the book style of the hinge unit of FIG. It is the figure which showed the screen and the direction of a camera in the movie style of FIG. It is the top view seen from the upper direction of FIG. It is the figure which showed the way of seeing from the opposite side in the movie style of FIG. It is a figure corresponding to the movie style of the hinge unit of FIG. FIG. 2 is a drawing of the folded cellular phone of FIG. 1 as viewed from diagonally below. FIG. 2 is a drawing of the folded cellular phone of FIG. 1 as viewed from diagonally below. It is drawing which expanded and showed the lower surface side of the mobile telephone of FIG. It is sectional drawing of the surface perpendicular | vertical to the longitudinal direction of the 1st housing | casing of the mobile telephone of FIG. FIG. 2 is a view of the cellular phone in a folded state in FIG. 1 as viewed obliquely from above. FIG. 4 is a drawing of the book-style mobile phone in the laterally open state of FIG. 3 as viewed obliquely from above.

  Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

(Embodiment)
1 to 4 show a mobile phone as a configuration of an embodiment of a portable device to which the present invention is applied. 1 is a first housing, 2 is a second housing, 3 is a hinge case, and 4 is an operation. , 5 is a display unit, 6 is an antenna, 7 is an input unit (imaging unit), and 8 is an illumination unit.

  As shown in the figure, in the mobile phone, the first housing 1, the second housing 2, and the hinge case 3 are coupled via a biaxial hinge unit 10 described later. The first housing 1 is provided with an operation unit 4, the second housing 2 is provided with a display unit 5 and an antenna 6, and the hinge case 3 is provided with an imaging unit 7 and an illumination unit 8 as input units. ing.

  5 and 8 show a biaxial hinge unit 10 incorporated in the hinge case 3, wherein 11 is a first rotating shaft, 12 is a second rotating shaft, 13 is a frame of the hinge case 3, and 21 is a first rotating shaft. Reference numeral 1 denotes an attachment member and 22 denotes a second attachment member.

  The biaxial hinge unit 10 is provided on each of a pair of left and right first rotary shafts 11, a right second rotary shaft 12, a frame 13 of the central hinge case 3, and the first rotary shaft 11 as illustrated. The left and right pair of first mounting members 21 and the second mounting member 22 provided on the second rotating shaft 12 are configured.

  That is, the first rotating shaft 11 is a hollow shaft whose axis is directed in the left-right direction, and is rotatably integrated with the lower portion of the bracket 14 screwed to the left and right side surfaces of the frame 13 via bearing members. ing. An arm-shaped first attachment member 21 that extends in a direction orthogonal to the axis of the first rotating shaft 11 and is screwed and fixed inside the first housing 1 is press-fitted and integrated with each other. Yes. The rotation angle of the first mounting member 21 is limited to about 180 degrees or the like due to the engagement structure with the bearing member of the first rotating shaft 11. The first rotary shaft 11 on the left side of the figure is assembled to the frame 13 via a bearing member 15 that provides a click feeling corresponding to a predetermined angle such as 90 degrees.

  The second rotary shaft 12 is a hollow shaft whose axis is directed in the front-rear direction, and is rotatable through a bearing member on a protrusion 16 formed integrally with the upper portion of the bracket 14 on the right side of the frame 13 in the drawing. It is integrated. An arm-shaped second mounting member 22 that extends in a direction orthogonal to the axis of the second rotating shaft 12 and is screwed and fixed inside the second housing 2 is press-fitted and integrated. . The rotation angle of the second mounting member 22 is limited by engaging the engagement piece 16 a provided on the protrusion 16 with the groove 12 a formed on the outer periphery of the second rotation shaft 12.

  6 shows the first wiring 31 and the second wiring 32, and FIG. 7 is a diagram in which the biaxial hinge unit 10, the first wiring 31 and the second wiring 32 are combined.

  That is, the first wiring 31 includes a connector 31a connected to the substrate in the first housing 1 at one end and a connector 31c connected to the substrate in the hinge case 3 at the other end. It passes through the hollow portion of the first rotating shaft 11 on the right side.

  The second wiring 32 includes a connector 32a connected to the substrate in the first housing 1 at one end and a connector 32b connected to the substrate in the second housing 2 at the other end. 7 is passed through the hollow portion of the second rotary shaft 12 through the hollow portion of the right first rotary shaft 11.

  In addition, the antenna wire 33 provided with a terminal 33 a connected to the substrate in the first housing 1 at one end and the terminal 33 b connected to the substrate in the second housing 2 at the other end is also connected to the second wiring 32. Similarly, in FIG. 7, it passes through the hollow portion of the first rotary shaft 11 on the right side and passes through the hollow portion of the second rotary shaft 12.

  FIG. 9 is an enlarged view of the folded cellular phone of FIG. 1 as viewed from the other end. The hinge case 3 includes a lower case 34 and an upper case 35, and the lower case 34 is narrower than the upper case 35. Is located in a recess 1 a formed at the end of the first housing 1. The first rotating shaft 11 penetrates between the lower case 34 and the projecting portions 1b located on both sides of the recess 1a of the first housing 1, whereby the hinge case 3 is relative to the first housing 1. The first rotating shaft 11 can be opened and closed in the vertical direction.

  Further, as shown in the drawing, the upper case 35 is located on the extension of the second housing 2 in the folded state. The second rotating shaft 12 passes between one side portion of the upper case 35 and the second casing 2, whereby the second casing 2 has a second rotating shaft on one side with respect to the hinge case 3. 12 can be opened and closed horizontally.

  And the 2nd protrusion part 34a which closes the open part of the upper case 35 is formed in the upper left and right of the lower case 34, and the bumper 23 by the shock absorbing material of soft materials, such as rubber | gum, is formed in the lower surface of this protrusion part 34a. Is provided.

  Further, the lock release button 24 is assembled between the protrusion 34 a of the lower case 34 and the side surface of the upper case 35. By the sliding operation of the lock release button 24, a lock claw (not shown) that is urged by a spring in a direction protruding from the end face of the hinge case 3 and engages with a recess (not shown) formed in the end face of the second housing 2. The lock is released by retracting (not shown).

  First, FIGS. 1 and 9 show a state where the first case 2 and the upper case 35 of the hinge case 3 are overlapped on the first case 1 and folded, and FIG. 8 corresponds to the folded state. The shaft hinge unit 10 is shown. That is, the first attachment member 21 and the second attachment member 22 are oriented in parallel to the same direction from the frame 13.

  Next, FIGS. 2 and 10 to 12 show a normal open style in which the second housing 2 and the hinge case 3 are opened in the vertical direction around the first rotating shaft 11 with respect to the first housing 1. 10 and 11, the direction indicated by the arrow A indicates the direction of the photographing unit 7, and the direction indicated by the arrow B indicates the direction of the screen of the display unit 5. FIG. 13 shows the biaxial hinge unit 10 corresponding to the normal open style. In other words, the first mounting member 21 and the second mounting member 22 face the frame 13 in opposite directions.

In the above normal open style, when the second casing 2 and the hinge case 3 are opened with respect to the first casing 1 in the vertical direction around the first rotation shaft 11, the bumper 23 is attached to the first casing 1. The impact is buffered by coming into contact with the back surface of the protrusion 1b.
As described above, the bumper 23 that normally cushions in an open style is provided on the inner side surface of the hinge case 3 in a folded state in consideration of design, and is disposed at a position that cannot be seen from the appearance.

  Next, FIG. 3 and FIG. 14 show a book style in which the second housing 2 is opened laterally around the second rotating shaft 12 with respect to the first housing 1 and the hinge case 3 and the display unit 5 is horizontally long. FIG. 15 shows a biaxial hinge unit 10 corresponding to the book style. That is, the second attachment member 22 faces one side with respect to the frame 13 and the first attachment member 21 in the folded state.

  Next, in FIGS. 4 and 16 to 18, the second housing 2 and the hinge case 3 are rotated 90 degrees about the first rotation shaft 11 with respect to the first housing 1 to make the display unit 5 horizontally long. 16 and 17, the direction indicated by an arrow A indicates the direction of the photographing unit 7, and the direction indicated by an arrow B indicates the direction of the screen of the display unit 5. FIG. 19 shows the biaxial hinge unit 10 corresponding to the movie style. In other words, the first mounting member 21 is oriented in the direction perpendicular to the frame 13 and the second mounting member 22 in the folded state.

  In the movie style, as shown in FIGS. 16 to 18, the shutter key 41 and the zoom key 42 provided on the upper surface of the first housing 1 near the hinge case 3, and the first housing 1. Submenu key 43, screen display switching key 44, A-MAT (audio zoom) ON / OFF key 45, face pita ON / OFF key 46, backlight compensation key 47, white balance, arranged on the upper side of operation unit 4 on the inner surface Key 48 and second shooting key 49 are used.

  The submenu key 43, the screen display switching key 44, the A-MAT (voice zoom) ON / OFF key 45, the face pita ON / OFF key 46, the backlight compensation key 47, the white balance key 48, and the second shooting key 49 are displayed. A portion along the line is printed to that effect.

  Bumpers 51 and 52 are provided along the vertical direction on the inner surface of the first housing 1 and before and after the operation unit 4. The bumpers 51 and 52 buffer shocks when the second casing 2 and the hinge case 3 are folded with respect to the first casing 1, and further, the lower case and the upper case constituting the first casing 1 are It also serves as a screw concealment for concealing the screws to be fixed.

  In the above movie style, as shown in phantom lines in FIG. 18, the thumb can be held along the bumper 51, the index finger can be held along the zoom key 42, the middle finger can be held along the shutter key 41, and the right hand can be held. That is, it is possible to realize a movie style having a grip feeling that is easy to hold with the right hand. In this case, the surface of the bumper 51 on the side close to the hinge case 3 is subjected to embossing that functions as a slip stopper for the thumb.

  A microphone hole 53 is provided in a portion of the first housing 1 that is spaced above the white balance key 48. In addition, a pair of left and right microphone holes 54 are provided in the upper portion of the front surface portion of the second housing 2 opposite to the display portion 5.

  Next, in the above movie style, when the second casing 2 having the display unit 5 with respect to the hinge case 3 having the photographing unit 7 is rotated about the second rotation shaft 12 on the upper side, the display unit It can be seen as a finder at the time of movie shooting at an oblique high angle looking up from below. Further, when the second housing 2 is slightly rotated to the near side, the display unit 5 can be viewed as a finder at an oblique low angle looking down from above.

  Then, when the second casing 2 is rotated forward with respect to the hinge case 3 around the upper second rotation shaft 12, the lower end portion of the restriction plate 17 is the end of the first rotation shaft 11 as shown in FIG. 12. The cam 19 on the outer periphery enters the cutout portion 19c of the large diameter portion 19b. Thereby, rotation of the 1st rotating shaft 11 is controlled.

  As described above, in the book style, as shown in FIGS. 3 and 14, the sub menu key 43, the screen display switching key 44, the A-MAT (audio zoom) ON / OFF key 45, the face pita ON / OFF key 46, The print display provided in the portion along the backlight correction key 47, the white balance key 48, and the second shooting key 49 is covered with the second casing 2 and is difficult to see. For this reason, along the lower part of the display unit 5, the sub menu key 43, the screen display switching key 44, the A-MAT (audio zoom) ON / OFF key 45, the face pita ON / OFF key 46, the backlight correction key 47, white A display corresponding to the balance key 48 and the second shooting key 49 is made.

  In the folded state, as shown in FIG. 8, the first mounting member 21 and the second mounting member 22 are parallel to the same direction from the frame 13 of the biaxial hinge unit 10. Since the screwing part for the second housing 2 is positioned up and down, the device has been devised so that it is easy to tune (or repair) the misalignment of the two housings 1 and 2 at the end of the assembly process. Yes.

  This mobile phone is of a vertically open / horizontal open type (double open type). That is, the hinge case 3 is connected to the longitudinal end of the first housing 1 via the first rotation shaft 11 of the biaxial hinge unit 10, and the hinge case 3 is connected to the second rotation of the biaxial hinge unit 10. The shaft 12 is connected to the end of the second casing 2 in the longitudinal direction. The hinge case 3 can be rotated around an axis extending in the left-right direction at the longitudinal end portion of the first housing 1 with respect to the first housing 1 by the first rotating shaft 11 of the biaxial hinge unit 10. Is provided. The second housing 2 is rotated around the axis extending in the longitudinal direction of the second housing 2 on the right side of the hinge case 3 with respect to the hinge case 3 by the second rotating shaft 12 of the biaxial hinge unit 10. It is provided as possible.

The sound emission structure of the housing will be described.
20 and 21 are perspective views showing the lower surface side in a state in which the cellular phone is closed. FIG. 22 is a perspective view showing the lower surface 1 d of the first housing 1. FIG. 23 is a cross-sectional view of a plane perpendicular to the longitudinal direction of the first housing 1.

  As shown in FIGS. 20 to 23, a pair of left and right projecting portions 1 b that are divided into two forks are provided at one longitudinal end of the first housing 1. The protruding direction of these protruding portions 1b is a direction parallel to the lower surface 1d of the first housing 1 and extends from one longitudinal end of the first housing 1 in the longitudinal direction of the first housing 1. . The tips of these protrusions 1b are provided in a rounded state.

  These projecting portions 1b are arranged with a space left and right, and a recess 1a as a space is formed between these projecting portions 1b. The recess 1a is defined by one end face 1f in the longitudinal direction of the first housing 1 and a pair of protrusions 1b.

  As shown in FIG. 3, the convex part 2a is formed in the edge part by the side of the hinge case 3 which is the surface in which the display part 5 of the 2nd housing | casing 2 was provided. A recess 1h is formed in the upper surface 1g of the first housing 1 and on the edge portion on the recess 1a side. When the mobile phone is closed, the convex portion 2a is inserted into the recess 1h.

  On the other hand, as shown in FIGS. 20 to 23, a rectangular recess 1 c is formed on the lower surface 1 d of the first housing 1. The upper surface 1g of the first housing 1 is a surface on which the operation unit 4 is provided, and the lower surface 1d of the first housing 1 is an opposite surface to the surface on which the operation unit 4 is provided.

  A sound emitting hole 1e is formed in the recess 1c. Specifically, the sound emission hole 1 e is formed at the bottom of the recess 1 c and penetrates to the inside of the first housing 1. A speaker 61 is attached to a position inside the first housing 1 and facing the sound emitting hole 1e.

The recess 1 c extends to the edge on the recess 1 a side of the lower surface 1 d of the first housing 1. Therefore, when the lower surface 1d of the first housing 1 comes into contact with the placement location, a sound guide portion 1j that is not in close contact with the placement location is formed at the edge portion of the recess 1c on the recess 1a side. The recess 1c and the recess 1a communicate with each other through the sound guide portion 1j, and there is no separation between the recess 1c and the recess 1a.
On the other hand, the left and right sides of the recess 1c and the opposite side of the recess 1a do not extend to the edge of the lower surface 1d of the first housing 1, and the left and right sides of the recess 1c and the opposite side of the recess 1a One casing 1 is surrounded by a lower surface 1d. Therefore, there is a step between the lower surface 1d of the first housing 1 and the bottom of the recess 1c on the left and right edges of the recess 1c and the opposite edge of the recess 1a.

  The lower case 34 disposed in the recess 1a is in contact with the left and right wall surfaces of the recess 1a, that is, the protrusions 1b on the left and right sides of the recess 1a. On the other hand, the lower case 34 is separated from the one end surface 1 f in the longitudinal direction of the first housing 1. Therefore, a first gap is formed between the end surface 1 f of the first housing 1 and the lower case 34, and the first gap extends from the lower surface 1 d of the first housing 1 to the upper surface 1 g.

  When the cellular phone is closed, the protruding portion 34a of the lower case 34 and the protruding portion 1b of the first housing 1 face each other in the vertical direction, and a second gap is formed between the protruding portions 1b and 34a. When the cellular phone is closed, the lower portion of the lower case 34 protrudes slightly below the lower surface of the protruding portion 1b, and the lower surface 34b of the lower case 34 (the surface on which the photographing unit 7 and the illumination unit 8 are provided). A step is formed between the opposite surface of the projection 1b and the lower surface of the protrusion 1b.

  FIG. 24 shows how the sound output from the speaker 61 propagates with arrows. When the mobile phone is closed and the lower surface 1d of the first housing 1 is directed to the placement location and the first housing 1 is placed at the placement location, the lower surface 1d of the first housing 1 is placed at the placement location. Abut.

  If it does so, the lower surface 1d of the 1st housing | casing 1 will contact a mounting location, and the lower surface 1d of the 1st housing | casing 1 will become a mounting surface. The sound output from the speaker 61 is emitted to the recess 1c through the sound emission hole 1e, but the sound is not trapped in the recess 1c. This is because the concave portion 1c extends to the edge on the concave portion 1a side of the lower surface 1d of the first housing 1, and the concave portion 1c and the concave portion 1a are connected by the sound guide portion 1j. Therefore, the sound emitted from the sound emitting hole 1e into the recess 1c is guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guiding portion 1j. When the cellular phone is closed, the first gap between the end surface 1 f of the first housing 1 and the lower case 34 is partially blocked by the convex portion 2 a formed on the second housing 2. It is not completely blocked.

  Since the tip of the protrusion 1b is rounded, a third gap is formed between the protrusion 1b and the placement location. Therefore, the sound guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guide portion 1j passes through the third gap between the protruding portion 1b and the placement place. Propagate through as shown by arrow C. Therefore, sound is guided out of the third gap.

  Further, the sound guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guiding portion 1j is between the end surface 1f of the first housing 1 and the lower case 34. It is guided to the upper surface 1g side of the first housing 1 through the first gap. The sound guided to the upper surface 1g side of the first housing 1 passes through the second gap between the protruding portion 34a of the lower case 34 and the upper surface 1g of the first housing 1 as indicated by arrows D and E. To be guided out of the second gap.

  When the second casing 2 is rotated laterally with respect to the hinge case 3 around the second rotation shaft 12 to make the mobile phone into a book style, the convex portion 2a is detached from the depression 1h. FIG. 25 shows the state of sound propagation in the book style with arrows. The sound emitted from the speaker 61 to the recess 1c is guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guide portion 1j. The sound guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guide portion 1j is, as indicated by the arrow F, the sound between the protruding portion 1b and the placement location. 3 is led out of the third gap. Further, the sound guided to the first gap between the end surface 1f of the first housing 1 and the lower case 34 by the sound guide portion 1j is the same as that of the lower case 34 and the first case as indicated by arrows G, H, and J. It is guided to the upper surface 1 g side of the first housing 1 through the first gap between the end surface 1 f of the housing 1. In particular, since the recess 1h is formed in the edge portion of the recess 1a, the sound spreads like arrows G, H, and J. Therefore, for the user who faces the display unit 5 and looks at the display unit 5, a sound can be heard from the front.

  As shown in FIG. 12, the second casing 2 and the hinge case 3 are rotated in the vertical direction with respect to the first casing 1 around the first rotating shaft 12, so that the mobile phone is set in a normal open style. At this time, the upper case 35 of the hinge case 3 turns from the upper side of the protruding portion 1 b to the lower side of the protruding portion 1 b, and the upper case 35 of the hinge case 3 protrudes downward from the lower surface 1 d of the first housing 1. Therefore, when the first housing 1 is placed on the placement location K with the lower surface 1d of the first housing 1 facing the placement location K, the upper case 35 hits the placement location K, and the first housing 1 The lower surface 1d is in a state of floating from the placement location K, and a gap is formed between the lower surface 1d of the first housing 1 and the placement location K. When sound is output from the speaker 61 in this state, the sound propagates to the left and right sides of the first housing 1.

  As described above, according to the mobile phone of the embodiment, the first casing 1 having the operation unit 4 and the second casing 2 having the display unit 5 are moved relative to each other from the folded state and opened in the vertical direction. The first case 1 and the second case 2 have a housing structure in which the first rotary shaft 11 to be opened and the second rotary shaft 12 to be opened in the horizontal direction are housed in the hinge case 3 together with the photographing unit 7. The hinge case 3 moves with the second housing 1 when opened in the vertical direction, and the hinge case 3 moves with the first housing 1 when opened in the horizontal direction. Thus, it is possible to shoot a movie with the shooting unit 7 while viewing the screen of the display unit 5 in landscape orientation in the movie style.

  Further, in the movie style, the second casing 2 having the display unit 5 is rotated around the second rotation shaft 12 in the central portion with respect to the hinge case 3 having the shooting unit 7 as a finder at the time of movie shooting. The display unit 5 may be a high angle with an oblique angle looking up from below, or may be a low angle with an oblique angle looking down from the top.

  In the biaxial hinge unit 10, the first rotating shaft 11 and the second rotating shaft 12 are assembled to the frame 13 of the hinge case 3, and the first mounting member 21 integrated with the first rotating shaft 11 is the first housing 1. Since the second mounting member 22 integrated with the second rotating shaft 12 is assembled to the second housing 2, the strength is excellent.

  Then, the first wiring 31 having one end fixed in the first housing 1 and the other end fixed in the hinge case 3 is passed through the hollow portion of the first rotating shaft 11, and the one end in the first housing 1. Is passed through the hollow portion of the first rotating shaft 11 and the second wire 32 having the other end fixed in the second housing 2 and passed through the hollow portion of the second rotating shaft 12. Wiring can be done.

  Further, since the recess 1c extends to the edge portion of the lower surface 1d of the first housing 1, the output sound of the speaker 61 is reduced even if the lower surface 1d of the first housing 2 is brought into surface contact with the mounting place. The sound can be transmitted to the outside without securing the volume.

  Further, since the sound emitting hole 1e is not formed on the side surface of the first housing 1, the design of the side surface of the first housing 1 is improved, and installation space for operation buttons, connectors, and the like is increased. Can be secured on the side.

(Other variations)
In the above embodiment, a mobile phone is used. However, the present invention is not limited to this, and the present invention is not limited to this, and can be applied to all devices having a camera, such as a PDA, a notebook computer, a wearable computer, a calculator, and an electronic dictionary. Can be used.
Further, the input unit of the hinge case may be a touch key, a fingerprint authentication unit, or other input devices in addition to the photographing unit.
Also, the shape of the housing is arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.
Further, the mobile phone may be one in which two cases are connected by a slide mechanism such as a so-called slide type, or one in which two cases are connected by a uniaxial hinge unit such as a so-called folding type or revolver type. Alternatively, two housings may be connected by a biaxial hinge unit such as a so-called rotating biaxial hinge type. Further, a so-called cycloid type or a so-called straight type may be used.
In the case of the folding type, for example, the hinge case 3 and the second housing 2 are assembled together so that the hinge case 3 and the second housing 2 are fixed, and the rotation axis with the axis line in the left-right direction is the protruding portion 1b. The protrusion 1b is provided so as to be rotatable with respect to the lower case 34 about its rotation axis. For this reason, the mobile phone cannot be set in the book style as shown in FIG. 3, but can be set in the open state as shown in FIG.

DESCRIPTION OF SYMBOLS 1 1st housing | casing 1a Recess 1b Protrusion part 1c Lower surface (mounting surface)
1d Recess 1f End face 1g Top face (back face)
1j Sound guiding portion 2 Second housing 3 Hinge case 34a Projecting portion (second projecting portion)
61 Place of speaker K

Claims (4)

A housing to be placed at the placement place;
A speaker housed in the housing;
A recess provided on the mounting surface of the housing;
A sound emitting hole of the speaker provided in the recess;
A sound guide portion that is provided at an edge of the recess and guides sound from the recess to the outside of the mounting surface of the housing;
A second housing overlaid on the back surface of the housing opposite to the mounting surface of the housing;
A hinge case coupled to the second housing;
A pair of projecting portions provided in a bifurcated state at the end of the housing and rotatably connected to the hinge case;
A second protrusion that is provided on the hinge case and faces the protrusion on the back side of the housing;
The hinge case is disposed between the pair of protrusions with a gap between the casing and an end of the housing,
The sound guide portion guides sound from the recess to a gap between the hinge case and the end of the housing, and the sound guided to the gap is guided to the back side of the housing by the gap,
A second gap is formed between the protrusion and the second protrusion, and the sound guided to the back side of the casing by the gap between the hinge case and the end of the casing is the first gap. A sound emitting structure for a casing, wherein the sound emitting structure is guided to the outside between the protruding portion and the second protruding portion by two gaps . When the mounting surface of the housing is placed on the mounting location, a third gap is formed between the protruding portion and the mounting location, and the hinge case and the end of the housing are formed by the sound guide portion. The sound emitting structure for a housing according to claim 1 , wherein the sound guided to the gap between the first portion and the second portion is guided to the outside between the protruding portion and the placement location by the third gap. . When the second housing is rotated from a state overlapping the rear surface of the housing together with the hinge case, claim 1 or 2, wherein the hinge case, characterized in that the protruding than the mounting surface of the housing The sound emission structure of the housing as described in 2. An electronic device comprising the sound emitting structure for a housing according to any one of claims 1 to 3 .