Patent Publication Number: US-2022239771-A1

Title: Electronic device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application claims priority to and the benefit of Japanese Patent Application No. 2021-011527 filed Jan. 27, 2021, the entire contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to an electronic device. 
     BACKGROUND 
     Some electronic devices can be used while being held by a user&#39;s hand, but when the user holds or carries an electronic device by hand, the electronic device may be dropped by mistake. Thus, some conventional electronic devices are provided with a bumper for absorbing an impact acting on the electronic devices. 
     SUMMARY 
     While the bumper used in such an electronic device as described above is, by attaching the bumper to corner parts of a housing of the electronic device, effective for absorbing an impact acting on any of the corner parts, it is difficult to absorb an impact acting on a flat surface portion of the electronic device when the electronic device is dropped or the like, and thus there is room for improvement in terms of impact resistance. 
     The present disclosure has been made in light of the foregoing, and an object thereof is to provide an electronic device capable of improving impact resistance. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a front view of a smartphone according to one of embodiments. 
         FIG. 2  is a perspective view of the smartphone illustrated in  FIG. 1 . 
         FIG. 3  is a detailed view of a part A in  FIG. 1 . 
         FIG. 4  is a detailed view of a part B in  FIG. 2 . 
         FIG. 5  is a schematic view illustrating a form of a protecting part as viewed in the direction of arrow C-C in  FIG. 3 . 
         FIG. 6  is an explanatory diagram illustrating a state in which the protecting part illustrated in  FIG. 2  is removed from the housing. 
         FIG. 7  is a cross-sectional view taken along line D-D in  FIG. 2 . 
         FIG. 8  is a perspective view of the cross section illustrated in  FIG. 7 . 
         FIG. 9  is an explanatory diagram of an arrangement range of a screen unit. 
         FIG. 10  is an explanatory diagram illustrating a state in which a cover member in  FIG. 3  is removed. 
         FIG. 11  is a cross-sectional schematic view in a direction E-E in  FIG. 10 . 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Embodiments of the electronic device according to the present disclosure will be described below in detail based on the drawings. Note that the embodiments are not intended to limit the present disclosure. Furthermore, constituent elements in the embodiments described below include those that can be replaced and easily conceived by a person skilled in the art and include those that are substantially identical to said constituent elements. 
     Embodiment 
       FIG. 1  is a front view of a smartphone  1  according to one of embodiments.  FIG. 2  is a perspective view of the smartphone  1  illustrated in  FIG. 1 . The smartphone  1  according to the present embodiment is an electronic device, and communicates wirelessly using a communication unit to make calls and transmit and receive data. The communication scheme supported by the communication unit is a wireless communication standard. Examples of the wireless communication standard include a communication standard of a cellular phone such as 2G, 3G, and 4G. The communication standard of the cellular phone includes, for example, Long Term Evolution (LTE), Wideband Code Division Multiple Access (W-CDMA), CDMA 2000 (Wideband Code Division Multiple Access 2000), Personal Digital Cellular (PDC), Global System for Mobile Communications (GSM) (trade name), and Personal Handy-phone System (PHS). Examples of the Wireless communication standard further include Worldwide Interoperability for Microwave Access (WiMAX), IEEE 802.11, Bluetooth (trade name), Infrared Data Association (IrDA), and Near Field Communication (NFC). The communication unit may support one or more of the communication standards described above. 
     The smartphone  1  includes a storage and a controller for controlling and implementing various operations. The storage stores programs and data. The storage may also be utilized as a work region to temporarily store the processing results of the controller. The storage may include any non-transitory storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage may include a plurality of types of the storage medium. The storage may include a combination of a portable storage medium such as a memory card, an optical disk, or a magneto-optical disk and a reading device of the storage medium. The storage may include a storage device utilized as a temporary storage region such as a Random Access Memory (RAM). The controller is an arithmetic processing device. Examples of the arithmetic processing device include but are not limited to a Central Processing Unit (CPU), a System-on-a-chip (SoC), a Micro Control Unit (MCU), and a Field-Programmable Gate Array (FPGA). The controller comprehensively controls the operations of the smartphone  1 , thereby implementing various functions. 
     As illustrated in  FIGS. 1 and 2 , the smartphone  1  is formed in a rectangular parallelepiped shape having a small thickness, or a plate-like shape with a substantially rectangular shape when viewed in the thickness direction. The smartphone  1  includes a housing  10  forming an exterior, and the housing  10  includes a case part  11  and a screen unit  20 . The case part  11  is a portion serving as a base of the housing  10 , and forms a back surface (a surface on the opposite side when the surface on the side illustrated in  FIG. 1  is a front surface) and side surfaces of the smartphone  1 . The screen unit  20  forms a first surface serving as one surface of the housing  10  and is disposed in front of the smartphone  1 . Thus, the screen unit  20  is formed in a substantially rectangular shape. The smartphone  1  is formed by disposing each device including the storage and the controller in a space inside the housing  10  formed by combining the case part  11  and the screen unit  20 . 
     The screen unit  20  is a so-called touch screen display, and includes a display  20 A serving as a display unit of information on the smartphone  1 , and a touch screen  20 B serving as an input unit for performing input operations on the smartphone  1 . The display  20 A and the touch screen  20 B are each formed in a substantially rectangular shape and are disposed to overlap with each other. In other words, the display  20 A and the touch screen  20 B are disposed such that the long side of the display  20 A is along the long side of the touch screen  20 B, and the short side of the display  20 A is along the short side of the touch screen  20 B. 
     The display  20 A includes a display device such as a Liquid Crystal Display (LCD), an Organic Electro-Luminescence Display EL (OELD), or an Inorganic Electro-Luminescence Display (IELD). The display  20 A displays characters, images, symbols, graphics, and the like. 
     The touch screen  20 B detects contact of a finger, a pen, or a stylus pen, or the like with respect to the touch screen  20 B. The touch screen  20 B can detect a position where a plurality of fingers, a pen, a stylus pen, or the like is in contact with the touch screen  20 B. 
     A detection method of the touch screen  20 B may be any method such as a capacitive method, a resistive method, a surface acoustic wave method, and a load detection method. In the following description, for ease of explanation, a user is assumed to touch the touch screen  20 B using a finger in order to operate the smartphone  1 . 
     The smartphone  1  determines a type of a gesture based on at least one of a contact detected by the touch screen  20 B, the position at which a contact is detected, a change in the position at which a contact is detected, an interval during which a contact is detected, and the number of times a contact is detected. The gesture is an operation performed with respect to the touch screen  20 B. The gesture determined by the smartphone  1  includes, for example, but is not limited to, a touch, a long touch, a release, a swipe, a tap, a double tap, a long tap, a drag, a flick, a pinch in, and a pinch out. 
     The smartphone  1  performs an operation in accordance with these gestures that are determined via the touch screen  20 B. Thus, intuitive and easy-to-use operability is realized for the user. The operation performed by the smartphone  1  in accordance with the determined gesture may vary in accordance with the screen displayed on the display  20 A. 
     The smartphone  1  includes protecting parts  30  that protect the screen unit  20 , on a surface on a side on which the screen unit  20  is disposed. The protecting parts  30  are disposed at two positions near both ends of a rectangular shape in the longitudinal direction, which is the shape of the screen unit  20 , on the surface of the smartphone  1  on the side where the screen unit  20  is disposed. In other words, the protecting parts  30  are disposed at both ends of the smartphone  1  in the longitudinal direction. The protecting parts  30  at the two positions are each formed of a member having elasticity such as a resin material, and are disposed to cover a part of the screen unit  20 . 
       FIG. 3  is a detailed view of a part A in  FIG. 1 .  FIG. 4  is a detailed view of a part B in  FIG. 2 . The protecting parts  30  disposed near both ends in the longitudinal direction of the smartphone  1  are disposed from one end side to the other end side in the lateral direction of the smartphone  1 . Each of the protecting parts  30  has a width in the longitudinal direction of the smartphone  1  significantly smaller than the length of the smartphone  1  in the lateral direction. In other words, the length of the protecting part  30  in the longitudinal direction is the same as the length of the smartphone  1  in the lateral direction, that is, the protecting part  30  is as long as the housing  10  in the lateral direction and is disposed near the end part of the smartphone  1  in the longitudinal direction with the longitudinal direction of the protecting part  30  oriented along the lateral direction of the smartphone  1 . 
     The protecting part  30  is disposed on the surface of the smartphone  1  on the side where the screen unit  20  is disposed and thus covers the vicinity of the end part of the screen unit  20  in the longitudinal direction. The protecting part  30  has a bridge structure in which both ends in the longitudinal direction of the protecting part  30  are in contact with the screen unit  20 , and the vicinity of the center of the protecting part  30  in the longitudinal direction is separated from the screen unit  20 . 
     Specifically, the protecting part  30  includes contact parts  31  located at both ends of the protecting part  30  in the longitudinal direction and being in contact with the screen unit  20 , and a separation part  35  located between the contact parts  31  and separated from the screen unit  20 . In other words, in the protecting part  30 , the contact parts  31  disposed at two positions at both ends in the longitudinal direction of the protecting part  30  are in contact with the screen unit  20  near both ends in the lateral direction of the screen unit  20 , that is, near the long sides of the screen unit  20 . In the protecting part  30  the separation part  35  located between the contact parts  31  located at two positions at both ends in the longitudinal direction of the protecting part  30  is not in contact with the screen unit  20  and is separated from the screen unit  20 . 
       FIG. 5  is a schematic view illustrating a form of a protecting part  30  as viewed in the direction of the arrow C-C in  FIG. 3 . The contact parts  31  of the protecting part  30  are formed such that the distance from the screen unit  20  gradually increases from contact surfaces  32 , which are respective portions of the contact parts  31  in contact with the screen unit  20 , toward the separation part  35  side in the longitudinal direction of the protecting part  30 . In other words, in the contact parts  31  of the protecting part  30 , side surfaces  33 , which are surfaces of the contact parts  31  located on the separation part  35  side, face the screen unit  20 , and are inclined with respect to the screen unit  20  in a direction in which the distance from the screen unit  20  increases from the contact surface  32  side toward the separation part  35  side. 
     Thus, in the contact parts  31  of the protecting part  30 , an angle θa formed by each of the side surfaces  33  of the contact parts  31  on the separation part  35  side and the screen unit  20  is an acute angle. In this case, the angle θa formed by the side surfaces  33  of the contact part  31  and the screen unit  20  is an angle formed by a portion extending from a portion of the screen unit  20  with which the contact surface  32  is in contact toward the separation part  35  side of the protecting part  30  and the side surface  33  of the contact part  31 . 
     Since, in this manner, the angle θa formed by the side surface  33  of the contact part  31  and the screen unit  20  is an acute angle, an angle θb formed by the contact surface  32  and the side surface  33  of the contact part  31  is an obtuse angle when the protecting part  30  is viewed as a single body. 
     In each of the contact parts  31  of the protecting part  30 , the contact surface  32  and the side surface  33  are connected to each other by a curved surface. In other words, in each of the contact parts  31 , a curved surface part  34 , which is a curved chamfered part, is formed between the contact surface  32  and the side surface  33 . As a result, the contact surfaces  32  and the side surfaces  33  included in the contact parts  31  of the protecting part  30  are connected to each other via the curved surface parts  34  formed in a curved shape, in other words, the contact surfaces  32  and the side surfaces  33  are respectively connected to each other by curved surfaces. 
     Each of the protecting parts  30  including the contact parts  31  and the separation part  35  is formed to be bent at positions near the end parts of the separation part  35  in the longitudinal direction when viewed from a direction of viewing the screen unit  20  from the front. Specifically, when the protecting part  30  is viewed from a direction of viewing the screen unit  20  from the front, a direction in which the protecting part  30  extends changes at boundary portions between the separation part  35  and the contact parts  31 . As a result, the contact parts  31  located at the two positions on both sides of the separation part  35  are bent with respect to the separation part  35  and are connected to the separation part  35 . 
     The bending directions of the contact parts  31  with respect to the separation part  35  are the same direction as each other, in the contact parts  31  located at the two positions on both sides of the separation part  35 . In other words, in a state in which the protecting part  30  is disposed near one end part in the longitudinal direction of the smartphone  1 , the contact parts  31  located at the two positions on both sides of the separation part  35  are bent with respect to the separation part  35  in a direction approaching the other end part in the longitudinal direction of the smartphone  1  away from the separation part  35 . The protecting part  30  is bent at the boundary portions between the contact parts  31  and the separation part  35  in this manner, so that the direction in which the protecting part  30  extends when viewing the screen unit  20  from the front changes at the boundary portions between the contact parts  31  and the separation part  35 . As a result, the protecting part  30  is formed such that the directions in which the contact parts  31  extend and the direction in which the separation part  35  extends are different from each other. 
     In addition, the width of the protecting part  30  differs between the contact parts  31  and the separation part  35 , and a width in a direction orthogonal to the direction in which the protecting part  30  extends is narrower in the separation part  35  than in the contact parts  31  when viewing the screen unit  20  from the front. In other words, in the protecting part  30 , a width Ws of the separation part  35  in a direction orthogonal to the direction in which the separation part  35  extends is narrower than a width Wc of the contact parts  31  in a direction orthogonal to the directions in which the contact parts  31  extend when viewing the screen unit  20  from the front. 
     In the protecting part  30 , in this manner, the width Ws of the separation part  35  is narrower than the width Wc of the contact parts  31 , in other words, the width Wc of the contact parts  31  is wider than the width Ws of the separation part  35 , so that the contact parts  31  include a step corresponding to the difference in width relative to the separation part  35 . The step of the contact parts  31  with respect to the separation part  35  is formed in an opposite direction to directions in which the contact parts  31  bend with respect to the separation part  35  when viewed from a direction in which the screen unit  20  is viewed from the front. As a result, the contact parts  31  are formed to protrude from the separation part  35  by a difference in width between the contact parts  31  and the separation part  35  toward the opposite direction to the directions in which the contact parts  31  bend with respect to the separation part  35 . 
     The protecting part  30  is detachably attached to the housing  10  by screws  40 . Specifically, the protective portion  30  is fixed to the case portion  11  by the screws  40 . The protecting part  30  covers a part of the screen unit  20 . 
     In the present embodiment, in the protecting part  30 , the holes through which the screws  40  are passed are formed in respective ones of the contact parts  31  disposed at the two positions on both sides in the direction in which the separation part  35  extends, and the protecting part  30  can be attached to the case part  11  by using the through holes for the screws  40  formed in the contact parts  31  in the two positions. 
       FIG. 6  is an explanatory diagram illustrating a state in which the protecting parts  30  illustrated in  FIG. 2  are removed from the housing  10 . The protecting parts  30  attached to the case part  11  included in the housing  10  by the screws  40  can be detached from the case part  11  as illustrated in  FIG. 6  by removing the screws  40  from the screw holes formed in the case part  11 . The protecting parts  30  are disposed at the two positions near both ends in the longitudinal direction of the smartphone  1 , and each protecting part  30  can be detachably attached to the case part  11  of the housing  10  by the screws  40  serving as attaching members. 
       FIG. 7  is a cross-sectional view taken along line D-D in  FIG. 2 .  FIG. 8  is a perspective view of the cross section illustrated in  FIG. 7 . The screen unit  20  covered with the protecting part  30  includes a glass surface  21  made of glass and a protecting sheet  22  disposed on the glass surface  21 . A sapphire glass or an inorganic glass may be used for the glass constituting the glass surface  21 , and the type of glass constituting the glass surface  21  is not particularly limited. The protecting sheet  22  is made of a transparent resin material, is overlapped on the glass surface  21 , and is joined to the glass surface  21 . As a result, the screen unit  20  is formed by integrating the glass surface  21  and the protecting sheet  22 . The screen unit  20  in which the glass surface  21  and the protecting sheet  22  overlap with each other is disposed in a direction in which the protecting sheet  22  side is located on the front surface side of the screen unit  20 , in other words, the front surface side of the smartphone  1 . As a result, the screen unit  20  is disposed in a state in which the glass surface  21  is covered with the protecting sheet  22 . 
     In the screen unit  20 , since the protecting sheet  22  is located on the surface side of the smartphone  1  in this manner, the protecting part  30  disposed to cover a part of the screen unit  20  is disposed to face the protecting sheet  22 . Thus, in the protecting part  30 , the contact parts  31  in contact with the screen unit  20  are in contact with the protecting sheet  22  located on the front surface side of the screen unit  20 . 
       FIG. 9  is an explanatory diagram of an arrangement range of the screen unit  20 .  FIG. 9  illustrates an end part of a portion overlapped with the protecting part  30  in the screen unit  20 , by a dashed line. The protecting part  30  covers the vicinity of a screen unit end part  25 , which is an end part of the screen unit  20  in the longitudinal direction, in other words, the protecting part  30  is formed and disposed in a shape overlapping the screen unit end part  25  in a front view direction of the screen unit  20 . As illustrated in  FIG. 9 , in the protecting part  30 , both the contact parts  31  and the separation part  35  overlap the screen unit  20 . 
     Specifically, near the screen unit end part  25 , in the vicinity of the positions where the screws  40  that attach the protecting part  30  to the housing  10  are disposed, the screen unit  20  is formed in a shape such that positions where the screws  40  are disposed are excluded. The contact parts  31  of the protecting part  30  are made to overlap a portion which is formed in a shape such that the positions where the screws  40  that attach the protecting part  30  to the housing  10  are disposed are excluded, near the screen unit end part  25  in this manner. The contact parts  31  are in contact with a portion overlapping the contact parts  31  in this manner in the screen unit  20 . 
     The separation part  35  of the protecting part  30  covers a narrow range of the screen unit  20  near the screen unit end part  25 . In other words, the separation part  35  of the protecting part  30  covers the vicinity of the screen unit end part  25  with a narrow width in the longitudinal direction of the screen unit  20  while being separated from the screen unit  20 . As a result, in the protecting part  30 , both the contact parts  31  and the separation part  35  cover a part of the screen unit  20 . 
     Here, among the screen unit end parts  25  located on both sides in the longitudinal direction of the screen unit  20 , a speaker port member  50  is disposed near the screen unit end part  25  on one side (see  FIGS. 7 and 8 ). The speaker port member  50  is formed in a shape in which a plurality of holes are formed in a plate-like member, and is a portion for emitting a sound emitted from a speaker body  51  toward the outside. In other words, the speaker body  51  is disposed further toward the inner side of the smartphone  1  than the speaker port member  50  and is capable of emitting a sound based on an electrical signal. The speaker port member  50  is disposed with respect to the speaker body  51  via a space, and allows the sound emitted from the speaker body  51  disposed on the inner side of the smartphone  1  to be emitted to the outside through the holes formed in the speaker port member  50 . 
     The speaker port member  50  formed in this manner is disposed adjacent to the screen unit end part  25  in substantially the same plane as the screen unit  20 , and has a substantially rectangular plate-like shape with a narrow width in the longitudinal direction of the screen unit  20  and a predetermined length in the lateral direction of the screen unit  20 . The separation part  35  included in the protecting part  30  is formed in a shape covering the speaker port member  50  formed in this manner in a front view direction of the screen unit  20 , and is disposed to cover the speaker port member  50 . Thus, in other words, the screen unit  20  and the speaker port member  50  are disposed in a position facing a separation surface  36 , which is a surface facing the screen unit  20 , in the separation part  35  of the protecting part  30 . 
     Since the separation surface  36  of the separation part  35  is separated from the screen unit  20  and the speaker port member  50 , the sound emitted from the speaker body  51  and passing through the hole formed in the speaker port member  50  can be emitted to the outside by passing between the separation surface  36  and the screen unit  20 . As a result, a portion between the separation surface  36  of the separation part  35  and the screen unit  20  is formed as a speaker opening part  52  for emitting the sound through the holes formed in the speaker port member  50  toward the outside. 
     A cover member  15  is disposed on the opposite side to the side on which the screen unit  20  is disposed in the separation part  35  included in the protecting part  30 . In other words, when viewing the screen unit  20  from the front, the screen unit  20  is disposed on one side of the separation part  35  in the width Ws direction from a position overlapping with the protecting part  30 , and the cover member  15  is disposed on the other side of the separation part  35  in the width Ws direction. 
     Specifically, in the protecting part  30 , since the width Ws of the separation part  35  is narrower than the width We of each of the contact parts  31 , the contact parts  31  are formed to protrude from the separation part  35  by a difference in width between the contact parts  31  and the separation part  35  in the opposite direction to the bending direction of the contact part  31 . In other words, in a portion of the protecting part  30  on the opposite side to the side on which the screen unit  20  is disposed, the position of the separation part  35  is formed to be recessed to the side where the screen unit  20  is disposed, further than the position of the contact parts  31 . 
     The cover member  15  is disposed in a portion formed to be recessed toward the side on which the screen unit  20  is disposed compared with the position of the contact part  31 , at the position of the separation part  35 , in the portion of the protecting part  30  formed in this manner on the opposite side to the side on which the screen unit  20  is disposed. The cover member  15  is detachably attached to the case part  11  of the housing  10  by screws serving as attaching members, and the cover member  15  also constitutes the housing  10  forming the exterior of the smartphone  1 . 
     The cover member  15  and the separation part  35  of the protecting part  30  are at least partially separated from each other. In the present embodiment, the cover member  15  and the separation part  35  are at least partially separated from each other by cutting out a portion of the separation part  35  facing the cover member  15  by a predetermined length in a direction in which a distance from the cover member  15  increases at a position near the center of the separation part  35  in the direction in which the separation part  35  extends. As described above, a part where a portion of the separation part  35  on the cover member  15  side and the cover member  15  face each other and are separated from each is formed as an opening part  16 . 
     In other words, in a case where a side on which the screen unit  20  is disposed in the width Ws direction of the separation part  35  is one side, and the opposite side is the other side when viewing the screen unit  20  from the front, the opening part  16  formed by separating the protecting part  30  and the cover member  15  from each other is provided on the other side of the separation part  35  in the width Ws direction. The opening part  16  in this case is formed of a portion of the separation part  35  facing and separated from the cover member  15 , and a portion of the cover member  15  facing the separation part  35 . 
     The opening part  16  formed in this manner is a portion that enables the holes formed in the speaker port member  50  disposed at a position facing the separation surface  36  of the separation part  35  to communicate with an outer portion of the protecting part  30 . 
     The housing  10  includes bumpers  60  near both ends of the smartphone  1  in the longitudinal direction.  FIG. 10  is an explanatory diagram illustrating a state in which the cover member  15  in  FIG. 3  has been removed. Each of the bumpers  60  includes a main bumper  61  and sub bumpers  62  formed of a member having elasticity such as a resin material or a rubber material. The bumper  60  including the main bumper  61  and the sub bumpers  62  is formed by integral molding and has a higher elasticity than the case part  11 . Among them, the main bumpers  61  are disposed across end surfaces  12  of the case part  11  in the longitudinal direction of the smartphone  1  and across a predetermined range near the end surfaces  12  on side surfaces  13  of the case part  11  located on long-side portions of the smartphone  1 . In other words, the main bumpers  61  are disposed to cover corners where the end surfaces  12  in the longitudinal direction and the side surfaces  13  of the case part  11  intersect each other. At this time, the portions of the main bumpers  61  disposed on the side surfaces  13  of the case part  11  are disposed across a range that extends from the end surfaces  12  of the case part  11  in the longitudinal direction of the smartphone  1  further than a range across which the protecting part  30  is disposed in the longitudinal direction of the smartphone  1 . 
     Each of the sub bumpers  62  is disposed at a position between the main bumper  61  and the screen unit  20  in a portion of the main bumper  61  disposed at a position further away from the end surface  12  of the case part  11  in the longitudinal direction of the smartphone  1  than the range in which the protecting part  30  is disposed.  FIG. 11  is a cross-sectional schematic view in the direction E-E in  FIG. 10 . The main bumpers  61  are disposed in contact with the side surfaces  13  of the case part  11 , and the screen unit  20  is adhered to the case part  11  by an adhesive G. The main bumpers  61  are formed to protrude in the thickness direction of the screen unit  20  further toward the screen unit  20  side than a surface of the case part  11  on the side on which the screen unit  20  is disposed, and the main bumpers  61  are formed to protrude in the thickness direction of the screen unit  20  further than the screen unit  20 . 
     Each of the sub bumpers  62  is disposed between the screen unit  20  and a portion of the main bumper  61  formed to protrude in the thickness direction of the screen unit  20  to the screen unit  20  side further than the case part  11 . In other words, each of the sub bumpers  62  is formed to protrude from the main bumper  61  toward the side on which the screen unit  20  is located in the lateral direction of the smartphone  1 . Thus, the sub bumpers  62  can come into contact with side surfaces  26  of the screen unit  20 . In other words, the housing  10  is provided with the bumpers  60  including the sub bumpers  62  having elasticity and being in contact with the side surfaces  26  of the screen unit  20 . 
     The smartphone  1  according to the present embodiment includes the configuration as described above, and an example of the effects thereof will be described below. When using the smartphone  1 , a user uses the smartphone  1  by performing input operations on the screen unit  20  including the touch screen  20 B with a finger, pen, or the like, and by viewing information displayed on the screen unit  20  including the display  20 A, while mainly manually holding the smartphone  1 . 
     The smartphone  1  can also emit any sound from the speaker body  51  disposed within the smartphone  1 . The sound emitted from the speaker body  51  passes through the holes formed in the speaker port member  50 , and is emitted from the speaker opening part  52  formed between the separation surface  36  of the separation part  35  and the screen unit  20  toward the outside, thereby allowing the user to hear the sound. The sound emitted from the speaker body  51  includes, for example, a sound playing along with a video when the video is displayed on the screen unit  20 , a sound emitted by an application program when any application program is executed by the smartphone  1 , and a voice of another party during a phone call when the smartphone  1  is used as a phone. 
     Since the smartphone  1  used in this manner can be held by the user&#39;s hand, it is conceivable that the smartphone  1  may be accidentally dropped during use or when the smartphone  1  is moved. At this time, since the screen unit  20  in which input operation and display of information are performed is exposed on the surface of the smartphone  1 , when the smartphone  1  is dropped with the side on which the screen unit  20  is located facing down, the screen unit  20  comes into contact with a floor surface, an object placed on the floor, or the like, and thus a large impact easily acts on the screen unit  20 . When a large impact acts on the screen unit  20 , the screen unit  20  may be damaged due to the impact, making it difficult to perform input operation to the screen unit  20  or making it difficult to appropriately perform display of information by the screen unit  20 . 
     In the present embodiment, the smartphone  1  formed in this manner is provided with the protecting part  30  disposed to cover a part of the screen unit  20 . As a result, when the smartphone  1  is dropped, the protecting part  30  easily comes into contact with the floor surface, an object placed on the floor, or the like before the screen unit  20 , thereby suppressing a large impact from acting on the screen unit  20  due to direct contact of the screen unit  20  with the floor surface or the like. 
     The protecting part  30  includes the contact parts  31  in contact with the screen unit  20 , and the separation part  35  located between the contact parts  31  and separated from the screen unit  20 , and is formed of a member having elasticity. As a result, when the protecting part  30  comes into contact with a floor surface or the like due to the smartphone  1  being dropped, the protecting part  30  elastically deforms in a direction in which the distance between the separation part  35  and the screen unit  20  becomes smaller, thereby allowing the impact when the protecting part  30  comes into contact with the floor surface or the like to be alleviated. In other words, a part of the screen unit  20  is covered with the protecting part  30 , and the contact parts  31  and the separation part  35  are formed in the protecting part  30 , thereby allowing the protecting part  30  to exert a buffering action and suppress a large impact from acting on the screen unit  20 . This can improve the impact resistance. 
     Since the screen unit  20  includes the glass surface  21 , the screen unit  20  is susceptible to damage when a large impact acts on the screen unit  20 , but in such a screen unit  20 , the damage to the screen unit  20  can be suppressed by covering a part of the screen unit  20  with the protecting part  30 . As a result, even in a case where input operability and information display performance are ensured by using the glass surface  21  in the screen unit  20 , a large impact can be suppressed from acting on the screen unit  20 , and the impact resistance can be improved. 
     Since the screen unit  20  includes the protecting sheet  22  on the glass surface  21 , damage to the glass surface  21  can be suppressed by the protecting sheet  22 , and damage to the screen unit  20  can be further suppressed. Since the protecting part  30  is disposed to face the protecting sheet  22 , the protecting sheet  22  can be suppressed from being peeled away from the glass surface  21  by the protecting part  30 , and the damage to the glass surface  21  can be suppressed by the protecting sheet  22 . This can protect the screen unit  20  and further improve the durability of the screen unit  20 . 
     In the contact parts  31  of the protecting part  30 , since the angle θa formed by the side surfaces  33  of the contact parts  31  on the separation part  35  side and the screen unit  20  is an acute angle, when a force, such as when the smartphone  1  is dropped, acts on the protecting part  30 , the separation part  35  can be further elastically deformed in a direction in which the separation part  35  approaches the screen unit  20 . As a result, the impact when the smartphone  1  is dropped or the like can be further alleviated by the protecting parts  30 , and the impact resistance can be further improved. 
     In the contact parts  31  of the protecting part  30 , since the curved surface parts  34  are formed between the contact surfaces  32  in contact with the screen unit  20  and the side surfaces  33  of the contact parts  31 , when a force, such as when the smartphone  1  is dropped, acts on the protecting part  30 , the separation part  35  can be further elastically deformed in a direction in which the separation part  35  approaches the screen unit  20 . Even when a large force acts on the protecting part  30 , by forming the curved surface parts  34  between the contact surfaces  32  and the side surfaces  33 , stress concentration can be suppressed from occurring near the boundary portions between the contact surfaces  32  in contact with the screen unit  20  and the side surfaces  33 . As a result, a large force acting on the screen unit  20  when the smartphone  1  is dropped or the like can be further suppressed by the protecting part  30 , and the impact resistance can be further improved. 
     In each of the protecting parts  30 , since the width Ws of the separation part is narrower than the width We of the contact parts, when a force, such as when the smartphone  1  is dropped, acts on the protecting part  30 , the separation part  35  can be further elastically deformed in a direction in which the separation part  35  approaches the screen unit  20 . As a result, an impact, such as when the smartphone  1  is dropped, can be further alleviated by the protecting parts  30 , and the impact resistance can be further improved. 
     Since the smartphone  1  is provided with the bumpers  60  having elasticity, the impact can also be absorbed by the bumpers  60  in addition to the protecting parts  30  when the smartphone  1  is dropped. In other words, the bumpers  60  include the main bumpers  61  disposed across the side surfaces  13  from the end surfaces  12  of the case part  11 , and when the smartphone  1  is dropped, an impact occurring at any of the corners where the end surfaces  12  and the side surfaces  13  of the case part  11  are connected to each other where a large impact likely occurs, can be absorbed by the main bumpers  61 . This can alleviate an impact when the smartphone  1  is dropped, and can suppress damage to the smartphone  1  due to the occurrence of a large impact. 
     Since each of the bumpers  60  includes, in addition to the main bumper  61 , the sub bumpers  62  protruding from the main bumper  61  in contact with the side surfaces  26  of the screen unit  20 , a large impact can be further suppressed from acting on the screen unit  20 . In other words, for example, in portions where the case part  11  faces the side surfaces  26  of the screen unit  20 , when the smartphone  1  is dropped, a large force acting on the case part  11  at the time of dropping becomes a large impact to be transmitted from the case part  11  to the side surfaces  26  of the screen unit  20 , and is transmitted to the screen unit  20 . As a result, it is conceivable that the screen unit  20  is easily damaged due to the impact from the case part  11 . In contrast, in the present embodiment, since the sub bumpers  62  having elasticity come into contact with the side surfaces  26  of the screen unit  20  at positions near the end surfaces  12  of the case part  11 , even when a large force acts on the main bumper  61  when the smartphone  1  is dropped, the impact at the time of dropping can be absorbed by the sub bumpers  62 . As a result, the impact at the time of dropping can be suppressed from being transmitted to the screen unit  20 , and the impact resistance can be further improved. 
     Since the speaker port member  50  through which sound emitted from the speaker body  51  passes is disposed at a position facing the separation surface  36  facing the screen unit  20  at the separation part  35  of the protecting part  30 . the sound of the speaker body  51  can be easily emitted to the outside. In other words, in the protecting part  30 , the separation part  35  is separated from the screen unit  20 , so that a portion between the separation part  35  and the screen unit  20  is formed as the speaker opening part  52  that can emit the sound that has passed through the holes formed in the speaker port member  50  toward the outside. 
     Since the speaker opening part  52  is formed by separating the separation part  35  from the screen unit  20 , the speaker opening part  52  can be prevented from being blocked even when the smartphone  1  is placed with the screen unit  20  facing down. As a result, even when the smartphone  1  is placed with the screen unit  20  facing down, the smartphone  1  can emit sound emitted by the speaker body  51  and passing through the speaker port member  50  from the speaker opening part  52  to the outside. Accordingly, regardless of the state of the smartphone  1 , sound emitted from the speaker body  51  can be emitted toward the outside through the speaker opening part  52 , making it easier to hear the sound from the speaker body  51 . 
     The smartphone  1  according to the present embodiment is waterproof. As a result, even when water splashes on the smartphone  1 , water can be suppressed from entering a portion in which the controller and the communication unit are disposed inside the smartphone  1 , and the smartphone  1  can be continuously used even after it is wet with water. When water splashes on the smartphone  1 , due to the waterproof function, water does not enter a region which renders use of the smartphone  1  impossible, but water may enter other regions. Such water can be drained from the opening part  16  formed by separating the protecting part  30  and the cover member  15  of the housing  10  on the opposite side to the side on which the screen unit  20  is disposed with respect to the separation part  35  when viewing the screen unit  20  from the front. 
     In other words, even when water enters the inside of the smartphone  1  from the hole formed in the speaker port member  50  by the smartphone  1  being soaked in water, water can be drained from the opening part  16  adjacent to the separation part  35  covering the speaker port member  50 . As a result, the water drainage performance when the speaker port member  50  is covered with the protecting part  30  can be ensured, and it is possible to achieve both ease of hearing sound and water drainage performance by disposing the protecting part  30  at a position facing the speaker port member  50 . 
     Since the protecting part  30  is detachably attached to the housing  10 , maintainability can be ensured. For example, even when the holes formed in the speaker port member  50  become clogged with foreign matter, the foreign matter can be easily removed by removing the protecting part  30 . This can improve maintainability performance. 
     The embodiments disclosed by the present application can be modified without departing from the main point or the scope of the present disclosure. In addition, the embodiments disclosed by the present application and modified examples thereof can be combined as appropriate. For example, the embodiment described above can be modified in the following manner. 
     While the above embodiments have been described with the smartphone  1  as an example of an electronic device, the electronic device according to the appended claims is not limited to the smartphone  1 . The electronic device according to the appended claims may be a portable electronic device other than the smartphone  1 . Examples of the portable electronic device include, but are not limited to, a mobile phone, a tablet, a portable computer, a digital camera, a smart watch, a media player, an electronic book reader, a navigator, and a gaming console. 
     In the embodiments described above, description is made using the screen unit  20  including the display  20 A and the touch screen  20 B as the first surface in which a part thereof is covered with the protecting part  30 , but the first surface according to the appended claims is not limited to the screen unit  20  including the display  20 A and the touch screen  20 B. The first surface according to the appended claims may be, for example, a display for only displaying information. The first surface is preferably a surface that becomes easily damaged due to an impact on the housing or a surface that is greatly affected when damaged. 
     In the embodiment described above, each of the bumpers  60  is formed by integrally forming the main bumper  61  and the sub bumpers  62 , but the main bumper  61  and the sub bumpers  62  may be constituted by separate components. Even when the main bumper  61  and the sub bumpers  62  are constituted by separate components, the sub bumpers  62  having elasticity come into contact with the side surfaces  26  of the screen unit  20 , so that a large impact can be suppressed from acting on the screen unit  20 , and the impact resistance can be improved. 
     In the embodiment described above, the screen unit  20  and the speaker port member  50  are disposed at a position facing the separation surface  36  of the separation part  35  included in the protecting part  30 ; however, a member other than the speaker port member  50  may be disposed at the position facing the separation surface  36 . For example, at the position facing the separation surface  36 , a member for a microphone may be disposed, in which a plurality of holes are formed in the same manner as the speaker port member  50 , through which sound is transmitted to the microphone disposed inside the smartphone  1 . 
     The characteristic embodiments have been described in order to fully and clearly disclose the technology according to the appended claims. However, the appended claims are not to be limited to the embodiments described above, and should be configured to embody all modifications and alternative configurations that those skilled in the art may make within the underlying matter set forth herein. 
     REFERENCE SIGNS LIST 
     
         
           1  Smartphone 
           10  Housing 
           11  Case part 
           12  End surface 
           13 ,  26 ,  33  Side surface 
           15  Cover member 
           16  Opening part 
           20  Screen unit 
           20 A Display 
           20 B Touch screen 
           21  Glass surface 
           22  Protecting sheet 
           25  Screen unit end part 
           30  Protecting part 
           31  Contact part 
           32  Contact surface 
           34  Curved surface part 
           35  Separation part 
           36  Separation surface 
           40  Screw 
           50  Speaker port member 
           51  Speaker body 
           52  Speaker opening part 
           60  Bumper 
           61  Main bumper 
           62  Sub bumper