Sound output device and vibration providing mechanism

Abstract

The sound output device has a functional mechanism exhibiting a prescribed function, a vibration mechanism that vibrates a member constituting the functional mechanism as a vibrated member, and a vibration control unit that controls the vibration mechanism based on sound information. The vibration mechanism has an actuator, a support member, and a biasing member. The actuator generates vibration along a prescribed vibration axis and includes a rear end located on the side opposite the vibrated member in the axial direction of the vibration axis. The support member supports the actuator. The biasing member is disposed around the support member when viewed along the vibration axis, and at least a portion of the biasing member is arranged closer to the vibrated member side than the rear end of the actuator in the axial direction of the vibration axis, the biasing member biasing the support member toward the vibrated member. The vibrated member includes a sound output region configured to have a relatively small thickness.

Description

Technical Field

[0001] This technology relates to a sound output device capable of outputting sound, and a vibration providing mechanism for outputting sound. Background Technology

[0002] In the speaker system disclosed in Patent Document 1, an actuator is attached to a frame member or connected to the front panel of a display panel. The actuator is attached such that it shifts (vibrates) in a direction parallel to the plane of the display panel's screen. This allows the display panel to be sufficiently thin (e.g., paragraphs

[0032] to

[0036] ,

[0051] and

[0052] of the specification in Patent Document 1). Figure 1 ).

[0003] In the sound output device disclosed in Patent Document 2, a frame-like (picture frame-like) border is attached as a diaphragm to the outer portion of the display panel. A protrusion is formed on the border, and a retainer for the actuator is attached to the border, causing the actuator to contact the protrusion. This allows the sound output device to have an excellent design while simultaneously providing high-quality sound (e.g., paragraphs

[0015] ,

[0051] to

[0057] and

[0097] in Patent Document 2). Figure 4 ).

[0004] Citation List

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 4655243

[0007] Patent Document 2: Japanese Patent No. 6237768 Summary of the Invention

[0008] Technical issues

[0009] As mentioned above, for sound output devices such as television sets, there is a need for a technology that allows the device to be thinner, smaller, and provides a space for high-quality sound.

[0010] In view of the above, one object of the present technology is to provide a sound output device and a vibration providing mechanism that can make the device thinner and smaller and provide a space with high-quality sound.

[0011] Solutions to the problem

[0012] To achieve the above objectives, the sound output device according to this technical embodiment includes a functional mechanism, a vibration providing mechanism, and a vibration controller.

[0013] The functional mechanism performs the specified function.

[0014] The vibration providing mechanism causes the components included in the functional mechanism to vibrate as vibration providing objects.

[0015] The vibration controller controls the vibration operations performed by the vibration supply mechanism based on sound information.

[0016] In addition, the vibration providing mechanism includes an actuator, a support member, and a biasing member.

[0017] The actuator generates vibration along a specified vibration axis and includes a rear end located axially on the vibration axis relative to the object component providing the vibration.

[0018] The indicator component supports the actuator.

[0019] When viewed along the vibration axis, the biasing member is positioned around the support member, and at least a portion of the biasing member is arranged to be closer to the vibration-providing member in the axial direction of the vibration axis than the rear end of the actuator, the biasing member biasing the support member toward the vibration-providing member.

[0020] In addition, the vibration-providing object component includes a sound output area configured to have a relatively small thickness.

[0021] In a sound output device, a vibration providing mechanism causes a component included in a functional mechanism performing an image display function to vibrate as a vibration providing target component. The vibration providing mechanism includes a support member supporting an actuator. A biasing member disposed around the support member biases the vibration providing target component toward the vibration providing target component. Furthermore, the vibration providing target component includes a sound output area configured to have a relatively small thickness. This configuration enables the device to be thinner and smaller, while providing space for high-quality sound.

[0022] The biasing member can be arranged to be closer to the vibration-providing object member in the axial direction of the vibration axis than the rear end of the actuator.

[0023] The functional mechanism is capable of performing image display functions and may include a display panel and a frame supporting the display panel. In this case, the vibration-providing object component may be the frame included in the functional mechanism.

[0024] The frame can have a shape that extends in a specific direction, and an area with a specified length in the direction of extension can be configured as a sound output area.

[0025] The sound output area can be configured to include a location in the extension direction of the frame where vibration is provided by the vibration providing mechanism.

[0026] The vibration-providing components can be a left frame and a right frame. When the display panel is viewed from the front, the left frame supports the left edge of the display panel, and when the display panel is viewed from the front, the right frame supports the right edge of the display panel.

[0027] The functional mechanism may include the rear chassis, and the vibration supply mechanism may be fixed to the rear chassis.

[0028] Vibration provides the object component that can be an essential component in the functional mechanism to perform a specified function.

[0029] The vibration providing mechanism may include a contact member connected to the actuator and in contact with the vibration providing object member.

[0030] The vibration providing mechanism may include a fixing member for securing the support member to the functional mechanism.

[0031] The biasing member can be a helical spring arranged around the supporting member.

[0032] Actuators may include piezoelectric elements or dielectric elastomers.

[0033] The support structure can be hollow and can house the actuator.

[0034] The support component can be a die-cast component or a pressing component.

[0035] The vibration providing mechanism according to this technical embodiment is a vibration providing mechanism that causes a vibration providing target component to vibrate, and includes an actuator, a support component, and a biasing component. Attached Figure Description

[0036] Figure 1 An example of an image display device according to an embodiment of the present technology is illustrated schematically.

[0037] Figure 2 An example configuration of the vibration-providing mechanism is illustrated schematically.

[0038] Figure 3 An example configuration of the actuator is illustrated schematically.

[0039] Figure 4 An example configuration of supporting components is shown schematically.

[0040] Figure 5 Another example of the configuration of the vibration providing mechanism is illustrated schematically.

[0041] Figure 6 The left frame and vibration supply mechanism are schematically shown.

[0042] Figure 7 It is along Figure 1The diagram shows a cross-sectional view of line DD, and schematically illustrates the enlarged portion of the left frame and the vibration-providing mechanism.

[0043] Figure 8 The left frame and part of the vibration-providing mechanism are shown as viewed from the rear surface of the image display device.

[0044] Figure 9 This is a perspective view of the vibration-providing mechanism, viewed from the upper right.

[0045] Figure 10 This is a top view of the vibration-providing mechanism.

[0046] Figure 11 This is a side view of the vibration providing mechanism 112 viewed from the right.

[0047] Figure 12 It is along Figure 8 The sectional view of line DD in the diagram, and the sectional view corresponding to the vibration providing mechanism a viewed from the right.

[0048] Figure 13 An example configuration of the subject is shown schematically.

[0049] Figure 14 Examples of the respective configurations of the fixing member, contact member, and housing member are schematically shown.

[0050] Figure 15 An example of the respective configuration of the rear support, coil spring, and cover is shown schematically.

[0051] Figure 16 A specific example of the configuration of the left frame is illustrated.

[0052] Figure 17 A specific example of the configuration of the left frame is illustrated.

[0053] Figure 18 It is along Figure 16 Or a cross-sectional view of line DD as shown in Figure 17.

[0054] Figure 19 This is a schematic diagram used to describe an example of sound reproduction control.

[0055] Figure 20 It schematically illustrates how to output high-frequency sounds and mid-to-low-range frequency sounds for reproduction.

[0056] Figure 21 An example configuration of a vibration-providing mechanism is illustrated schematically as a comparative example. Detailed Implementation

[0057] Embodiments according to the present technology will now be described with reference to the accompanying drawings.

[0058] [Image display device]

[0059] Figure 1 An example of an image display device according to an embodiment of the present technology is illustrated schematically.

[0060] The image display device 50 corresponds to an embodiment of the sound output device according to the present technology.

[0061] Furthermore, the image display device 50 may also correspond to an embodiment of an electronic device capable of outputting sound.

[0062] Examples of image display devices 50 include television devices that display images based on television broadcasts. Of course, this technology can also be applied to other image display devices.

[0063] In addition to being used as a fixed device placed on a horizontal surface such as a floor, shelf, or table, the image display device 50 can also be used as a wall-mounted device that is suspended from a wall.

[0064] like Figure 1 As shown, the left-right direction, up-down direction, and depth direction are defined when viewing the image display device 50 from the front. Of course, the orientation of the image display device 50 and the direction in which it is used are not restricted.

[0065] The image display device 50 includes a display panel 10, a frame 11, two vibration providing mechanisms 12 (12a, 12b) and a controller 13.

[0066] The display panel 10 can display images on the display surface 14.

[0067] Any type of display panel, such as a liquid crystal panel or an organic EL panel, can be used as display panel 10.

[0068] The frame 11 supports the outer portion of the display panel 10.

[0069] In this embodiment, an upper frame 11a, a lower frame 11b, a left frame 11c, and a right frame 11d are provided to support the upper edge, lower edge, left edge, and right edge of the display panel 10 respectively when viewed from the front.

[0070] The upper frame 11a, lower frame 11b, left frame 11c, and right frame 11d can be separated from each other or can be formed integrally within the enclosing frame 11. When the enclosing frame 11 is used, the upper, lower, left, and right parts of the enclosing frame 11 correspond to the upper frame 11a, lower frame 11b, left frame 11c, and right frame 11d, respectively.

[0071] The frame 11 is made of a metallic material such as aluminum. The material of the frame 11 is not limited to this, and any other material can be used.

[0072] Typically, the vibration providing mechanism 12 is arranged within the image display device 50, and can cause the components included in the image display device 50 to vibrate as vibration providing objects.

[0073] In this embodiment, the left frame 11c and the right frame 11d are configured as vibration-providing components.

[0074] The left frame 11c is vibrated by the vibration supply mechanism 12a, and the right frame 11d is vibrated by the vibration supply mechanism 12b.

[0075] like Figure 1 As shown, the vibration providing mechanism 12a on the left and the vibration providing mechanism 12b on the right are arranged at the same horizontal level (same height) in the vertical direction. In other words, the parts of the left frame 11c and the right frame 11d, which are located at the same height, are vibrated by the vibration providing mechanism 12a and the vibration providing mechanism 12b, respectively.

[0076] The location of the vibration providing mechanism 12 (i.e., the location of the point where the vibration providing mechanism 12 provides vibration) is not limited. It can be designed as needed to provide a space with the desired sound. For example, the vibration providing mechanism 12a on the left and the vibration providing mechanism 12b on the right can be arranged at different heights from each other.

[0077] The controller 13 can perform overall control over the operation of the image display device 50.

[0078] The controller 13 includes: hardware, such as a processor, such as a CPU, GPU, and DSP; memory, such as ROM and RAM; and storage devices necessary for the configuration of the computer, such as an HDD. For example, the sound output method according to the present invention is executed by loading a program according to the present invention pre-recorded in, for example, ROM into RAM via, for example, the CPU, and executing the program.

[0079] The configuration of controller 13 is unrestricted; any hardware and any software can be used. Of course, hardware such as FPGAs or ASICs can be used. Furthermore, the location where controller 13 is implemented is also unrestricted, and the design can be executed arbitrarily.

[0080] In this embodiment, the vibration controller is implemented as a functional block by a CPU that executes a specified program. Of course, dedicated hardware such as integrated circuits (ICs) can be used to implement the functional block.

[0081] The program can be installed on the image display device 50 via, for example, various recording media. Alternatively, the program can be installed via, for example, the Internet.

[0082] There are no restrictions on the type of recording medium used to record the program, and any computer-readable recording medium can be used. For example, any non-transitory computer-readable recording medium can be used.

[0083] The vibration controller can control the vibration operation performed by the vibration supply mechanisms 12a and 12b based on sound information. This enables direct sound output from the left frame 11c and right frame 11d of the image display device 50. In other words, the left frame 11c and right frame 11d can be used as loudspeakers.

[0084] [Vibration Provider]

[0085] Figure 2 An example configuration of the vibration providing mechanism 12 is shown schematically.

[0086] The vibration providing mechanism 12 can generate vibration along the vibration axis V to vibrate the object providing component 15. In this embodiment, the vibration axis V corresponds to a designated vibration axis.

[0087] Here, the side of the vibration providing mechanism 12 facing the vibration providing object member 15 is defined as the front side of the vibration providing mechanism 12. Furthermore, the direction is defined as follows.

[0088] The front-to-back direction (X direction) of the vibration providing mechanism 12 is the axial direction of the vibration shaft V.

[0089] The left-right direction (Y direction) of the vibration providing mechanism 12 is the direction orthogonal to the axis of the vibration axis V, and corresponds to the left-right direction when the front side of the vibration providing mechanism 12 is viewed from the axis of the vibration axis V.

[0090] The vertical direction (Z direction) of the vibration providing mechanism 12 is orthogonal to the axial direction of the vibration axis V, and corresponds to the vertical direction when the front side of the vibration providing mechanism 12 is viewed from the axial direction of the vibration axis V.

[0091] Notice, Figure 2 The X, Y, and Z directions shown can be arbitrarily set, and... Figure 1 The vertical, horizontal, and depth directions of the image display device 50 shown are independent. In other words, the vibration providing mechanism 12 can be placed within the image display device 50 in any direction (any orientation). Therefore, the direction of the vibration axis V (vibration direction) is unrestricted and can be arbitrarily set.

[0092] Figure 2 A is a side view of the vibration providing mechanism 12 viewed from the right.

[0093] Figure 2 B is a cross-sectional view of the vibration providing mechanism 12, wherein it is cut parallel to the vertical direction along a plane including the vibration axis V. Figure 2 The vibration providing mechanism 12 shown in A has only support member 19.

[0094] The vibration providing mechanism 12 includes an actuator 17, a contact member 18, a support member 19, a biasing member 20, and a fixing member 21.

[0095] Actuator 17 can generate vibration along the vibration axis V.

[0096] For example, a piezoelectric element or dielectric elastomer capable of electromechanical conversion may be used in actuator 17.

[0097] Piezoelectric actuators (such as PZT stacks) are compact and reliable, and in addition to stable material properties, they also feature high stress, high bandwidth and high power density.

[0098] Furthermore, piezoelectric actuators do not require magnetic field bias, unlike magnetostrictive actuators. This allows for actuators with simpler configurations and, consequently, smaller actuator 17.

[0099] Figure 3 An example configuration of actuator 17 is shown schematically.

[0100] For example, such as Figure 3 As shown, piezoelectric elements 23a and 23b, extending in a specific direction, are connected to each other and arranged along the vibration axis V. A voltage is applied to the lead 24a of piezoelectric element 23a and the lead 24b of piezoelectric element 23b via wiring (not shown). This allows vibration to be generated along the vibration axis V from the displacement of each of the piezoelectric elements 23a and 23b.

[0101] For example, piezoelectric elements 23a and 23b can be driven individually or together. Of course, the wiring structure for the electrical connections to leads 24a and 24b is unrestricted and can be designed arbitrarily.

[0102] The two piezoelectric elements 23a and 23b are used by interconnecting each other, which enables stable vibration to be generated, thereby obtaining excellent acoustic characteristics.

[0103] For example, sufficiently good acoustic characteristics can be obtained since the amplitude ranges from about 1.5 μm to about 2.0 μm. Of course, the amplitude of the vibration generated by the actuator 17 is not limited and can be designed as needed to obtain the desired level of acoustic characteristics.

[0104] Furthermore, the configuration of actuator 17 is unrestricted and can be any configuration.

[0105] Note that, as Figure 2 and Figure 3 As shown in B, the end of the actuator 17 located in the axial direction (X direction) of the vibration shaft V opposite to the vibration-providing object member 15 is referred to as the rear end 25.

[0106] The contact member 18 is configured to connect to the actuator 17 and to contact the vibration-providing object member 15.

[0107] In other words, the vibration generated by the actuator 17 is transmitted to the vibration-providing object member 15 through the contact member 18.

[0108] For example, a component made of brass, which has a high specific gravity and provides an echo effect, is used as the contact component 18. This makes it possible to improve acoustic properties.

[0109] Of course, the shape and material of the contact components, the method of forming the contact components, etc. are not restricted, and the contact components can be designed arbitrarily.

[0110] Figure 4 An example configuration of supporting component 19 is shown schematically.

[0111] Figure 4 A is a side view of the support member 19 viewed from the right side.

[0112] Figure 4 B is a front view of the support member 19 as seen from the front.

[0113] Figure 4 C shows the bias member 20 being attached to the support member 19, as seen from the rear.

[0114] Support component 19 supports actuator 17.

[0115] like Figure 4 As shown in B, a support hole 26 is formed in the support member 19 along the vibration axis V. In other words, the support member 19 is hollow and supports the actuator 17 by accommodating the actuator 17 therein.

[0116] Furthermore, the support member 19 is composed of a front portion 27a and a rear portion 27b coupled to each other in the axial direction of the vibration shaft V. The front portion 27a has a cuboid shape, and the rear portion 27b has a cylindrical shape. A step is formed in the portion of the front portion 27a and the rear portion 27b that are coupled to each other, and serves as a front support 28 for supporting the front end 20a of the biasing member 20.

[0117] The die-cast component (cast component) formed by die casting (die casting process) is used as the support component 19. For example, the support component 19 can be formed of, for example, aluminum alloy, zinc alloy or magnesium alloy.

[0118] Furthermore, the pressing member formed by pressing (pressing process) is used as the support member 19. For example, the support member 19 can be formed of, for example, brass.

[0119] Furthermore, the support member 19 may be composed of multiple assembled components. For example, the support member 19 may be composed of an assembled material made of a resin material such as polycarbonate (PC) and a pressing component.

[0120] In addition, the component used to support the front end 20a of the bias member 20 (the component used as the front support member 28) can be attached separately.

[0121] For example, the support member 19 is formed using a single die-cast component. This allows for reduced losses in vibration transmission, thereby providing stable vibration to the object member 15. This makes it possible to improve acoustic characteristics.

[0122] Furthermore, the support member 19 consists of a pressing member used in combination and a member made of resin material. This makes it possible to reduce component costs.

[0123] Furthermore, the shape and material of the support member 19, the method of forming the support member 19, etc. are not restricted, and the support member 19 can be designed arbitrarily.

[0124] The fixing member 21 secures the supporting member 19 at a designated location within the image display device 50. For example, the fixing member 21 is connected to a designated fixing side member 30 included in the image display device 50, such as... Figure 2 As shown.

[0125] The support member 19 is held and fixed to the fixed side member 30 by the fixed member 21.

[0126] The fixing member 21 includes a connecting part 21a and a retaining part 21b.

[0127] In this embodiment, the flat plate-shaped connecting portion 21a and the flat plate-shaped retaining portion 21b are orthogonally coupled to each other. Therefore, the fixing member 21 has an overall L-shape.

[0128] The connecting portion 21a is the part that is connected to the fixed side member 30. The configuration and method for connecting the connecting portion 21a to the fixed side member 30 are not limited, and any method such as screw connection or welding can be used.

[0129] The retaining portion 21b is the portion that retains the support member 19. In this embodiment, an attachment hole is formed in the retaining portion 21b, extending parallel to the axial direction (X direction) of the vibration axis V. The rear portion 27b of the support member 19 is retained by insertion into the attachment hole.

[0130] The configuration and method of connecting the support component 19 to the retaining part 29b are unrestricted and any method can be used.

[0131] The fixing member 21 is made of a metal material such as aluminum, electro-galvanized steel (SECC) or cold-rolled material (e.g., SPCC).

[0132] Furthermore, the shape and material of the fixing member 21, the method of forming the fixing member 21, etc. are not restricted, and the fixing member 21 can be designed arbitrarily.

[0133] The biasing member 20 biases the support member 19 toward the vibration-providing object member 15. In other words, due to the biasing member 20, a force acts on the support member 19 in the direction of the vibration-providing object member 15.

[0134] like Figure 2 and Figure 4 As shown in Figure C, the biasing member 20 is disposed around the support member 19, as seen along the vibration axis V. In other words, when the support member 19 is viewed from the front or back along the vibration axis V, the biasing member 20 is arranged in a portion corresponding to the side of the support member 19.

[0135] The biasing member 20 is not limited to being arranged to cover all the peripheral surfaces (sides) of the support member 19. The biasing member 20 may be arranged on a portion of the peripheral surface of the support member 19.

[0136] In this embodiment, a helical spring is arranged as a biasing member 20 (hereinafter referred to by the same reference numeral as helical spring 20) around the support member 19. The helical spring 20 is attached to the cylindrical rear portion 27b of the support member 19.

[0137] Along the axial direction of the vibration shaft V, the front end 20a of the helical spring 20 is supported by a step (i.e., front support 28) formed in the support member 19. The rear end 20b of the helical spring 20 is supported by the retaining portion 21b of the fixing member 21. In other words, in this embodiment, the retaining portion 21b of the fixing member 21 serves as a rear support for retaining the rear end 20b of the biasing member 20.

[0138] The distance between the front support 28 and the retaining portion 21b (rear support) in the axial direction of the vibration shaft V is appropriately set. This allows the support member 19 to be biased toward the vibration-providing object member 15 due to the elastic force generated by the helical spring 20.

[0139] Therefore, the actuator 17 and contact member 18, supported by the support member 19, are also biased toward the vibration providing member 15. This results in the ability to stably transmit the vibration generated by the actuator 17 to the vibration providing member 15. This makes it possible to stabilize the sound pressure.

[0140] The specific value of the biasing force (load) generated by the biasing member 20 is not limited. For example, the value is set such that the vibration-providing member 15 will not deform unexpectedly due to the biasing force. Furthermore, the value is set such that deformation caused by, for example, assembly tolerances or deterioration over time can be absorbed.

[0141] For example, when a load from 2.0 kgf to 3.0 kgf is applied, this allows for the absorption of a deviation of approximately + / - 3.0 mm parallel to the axial direction of the vibration shaft V (the relative deviation between the vibration supply mechanism 12 and the vibration supply point in the vibration supply object member 15). This results in sufficiently excellent acoustic characteristics. Of course, the deviation is not limited to this range.

[0142] like Figure 2 As shown, in the axial direction of the vibration shaft V, the helical spring 20 is positioned closer to the vibration-providing member 15 than the rear end 25 of the actuator 17. In other words, the rear end 20b of the helical spring 20 is positioned further forward than the rear end 25 of the actuator 17.

[0143] Regarding the arrangement of the helical spring 20, as described above, the helical spring 20 is placed around the actuator 17. In other words, the helical spring 20 is arranged at a position where it overlaps with the actuator 17 in the axial direction of the vibration shaft V.

[0144] This allows the vibration providing mechanism 12 to be smaller in the front-to-back (depth) direction, thus making the vibration providing mechanism 12 more compact. This results in the image display device 50 being able to be thinner and smaller.

[0145] The specific configuration of the helical spring 20 is not restricted, and the free length, spring constant, etc. of the helical spring 20 can be designed arbitrarily.

[0146] Furthermore, the configuration and material of the bias member 20 itself, the method of forming the bias member 20 itself, etc., are not limited, and the bias member 20 can be designed arbitrarily. For example, the bias member 20 can be formed using a leaf spring. In this case, the size of the vibration providing mechanism 12 can also be made compact by arranging the bias member 20 closer to the vibration providing object member 15 than the rear end 25 of the actuator 17.

[0147] Figure 5 Another configuration example of a vibration-providing mechanism is illustrated schematically.

[0148] exist Figure 5In the vibration providing mechanism 12 shown, the front end 20a of the coil spring 20 is supported at a position further forward than the rear end 25 of the actuator 17. On the other hand, the rear end 20b of the coil spring 20 is held by the holding portion 21b of the fixing member 21 at a position further rear than the rear end 25 of the actuator 17.

[0149] As described above, only a portion of the biasing member 20 can be positioned further forward than the rear end 25 of the actuator 17. In other words, only the front portion of the biasing member 20 can overlap with the actuator 17 in the axial direction of the vibration shaft V.

[0150] As described above, at least a portion of the biasing member 20 is arranged closer to the vibration-providing member 15 than the rear end 25 of the actuator 17 in the axial direction of the vibration shaft V. This allows the vibration-providing mechanism 12 to be smaller in the longitudinal direction.

[0151] Note that arranging the bias member 20 as a whole closer to the vibration-providing member 15 than the rear end 25 of the actuator 17 is more advantageous for making the vibration-providing mechanism 12 more compact in size.

[0152] [Vibration provides support to the object component]

[0153] Using the vibration providing mechanism 12, any component included in the image display device 50 can be vibrated as the vibration providing object component 15.

[0154] Regarding how to select the vibration-providing component 15, the focus is on the functional mechanism that performs the specified function to perform the selection. Typically, the specified function is different from the sound output function of the mechanism.

[0155] Select a component included in the functional mechanism that performs the specified function as the vibration-providing component 15. Alternatively, the component included in the functional mechanism is an indispensable component when the functional mechanism performs the specified function.

[0156] exist Figure 1 In the example shown, the mechanism that performs the image display function of the image display device 50 corresponds to a functional mechanism. For example, Figure 1 The display panel 10 and the frame 11 supporting the display panel 10 correspond to the components included in the functional mechanism. In other words, the display panel 10 and the frame 11 are the components necessary for performing the image display function.

[0157] On the other hand, for example, a border that is arranged on the periphery of the display panel 10 for decorative purposes and is not a component necessary for performing the image display function is not included in the components included in the functional mechanism.

[0158] exist Figure 1In the example shown, the left frame 11c, which includes the functional mechanism for performing the image display function, is vibrated by the vibration supply mechanism 12a, and the right frame 11d, which also includes the functional mechanism for performing the image display function, is vibrated by the vibration supply mechanism 12b. This results in the output of sound.

[0159] Figure 6 The left frame 11c and the vibration providing mechanism 12a are schematically shown. The directions "left and right," "up and down," and "depth" in the figure correspond to... Figure 1 The direction shown.

[0160] In this embodiment, a sound output region S is set in the left frame 11c. In other words, in order to output sound using vibration, a sound output region S is formed in a component essential for performing an image display function that is different from a sound output function.

[0161] The sound output area S is configured to have a relatively small thickness. In other words, the sound output area S is configured to have a smaller thickness when the entire left frame 11c is viewed than the area excluding the sound output area S.

[0162] For example, the sound output region S is configured to have the smallest thickness among the portions included in the left frame 11c. The sound output region S may have a thickness that, when the thickness of the portions included in the left frame 11c is statistically observed, is determined to be within a small thickness range, but is not limited to this. In other words, a relatively small thickness is not limited to a minimum thickness.

[0163] For example, a designated area in the frame with a thickness of 2mm can be thinned to a thickness of 1mm using methods such as NC machining. This makes it easy to obtain the sound output area S. Of course, there are no restrictions on the method used to form the sound output area S.

[0164] like Figure 6 As shown in A to C, the left frame 11c has a shape that extends in a specific direction. For example, a region with a specified length in the extension direction is configured as a sound output region S. The position of the sound output region S in the extension direction (the positions of the two ends of the sound output region S), the length of the sound output region S (the distance between the two ends), etc., are not restricted, and the sound output region S can be designed arbitrarily.

[0165] For example, such as Figure 6 As shown in A, the sound output area S can be set to be perpendicularly symmetrical about a line corresponding to the position (position of the vibration supply point) where the vibration is provided by the vibration supply mechanism 12a.

[0166] In addition, such as Figure 6As shown in B, the sound output area S can be set so that the portion of the sound output area S located below the vibration supply point is larger.

[0167] exist Figure 6 In A and B, the sound output area S is set to include a position in the extension direction of the left frame 11c that is provided with vibration by the vibration providing mechanism 12a.

[0168] In cases where this is not the limitation, the sound output area S can be set at a location excluding the position where vibration is provided by the vibration providing mechanism S, such as... Figure 6 As shown in C.

[0169] In addition, multiple areas can be configured as sound output areas S.

[0170] For example, regarding the location, length, and thickness of the sound output region S, it is sufficient if the sound output region S is appropriately designed based on factors such as: the range of sound frequencies to be output (e.g., low-frequency sound, low-mid-range frequency sound, mid-range frequency sound, high-mid-range frequency sound, and high-frequency sound), or the method of sound localization, or what sound image is to be obtained.

[0171] For example, the ratio of the length of the sound output region S to the total length of the left frame 11c can be controlled. Alternatively, an appropriate length for the sound output region S can be calculated and set to a fixed value. This design approach can be used, for example.

[0172] The proper formation of the sound output region S makes it possible to improve sound quality, sound pressure level, and the perceived breadth of sound. Furthermore, in Figure 1 In the example shown, one can also control, for example, the sound balance between the left and right sides, as well as the perceived vertical breadth of the sound. Furthermore, it's possible to achieve a unified sound output that works in conjunction with another speaker. In other words, a space with the desired sound can be provided.

[0173] Note that the vibration-providing component 15 is not limited to a component extending in a specific direction, such as the left frame 11c. Plate components such as the rear chassis, diffuser plate, or display panel 10 can be selected as the vibration-providing component 15. In this case, a space with high-quality sound can also be provided by setting a designated area in the vibration-providing component 15 as the sound output area S.

[0174] [Specific example of the configuration of the vibration supply mechanism]

[0175] refer to Figures 7 to 18 A specific example describing the configuration of the vibration-providing mechanism.

[0176] Assume that vibration providing mechanisms 112a and 112b are attached to the left frame 11c and right frame 11d respectively, where the left frame 11c and right frame 11d are the vibration-providing component 15 of vibration providing mechanism 112a and the vibration-providing component 15 of vibration providing mechanism 112b respectively. Figure 1 The image display device 50 shown is in this case.

[0177] exist Figures 7 to 18 In the diagram, the directions of "left and right," "up and down," and "depth" correspond to... Figure 1 The directions shown are given. Furthermore, the X, Y, and Z coordinates in the diagram correspond to... Figures 2 to 5 The coordinates shown in each figure are used, and the direction is defined using a similar definition as described above.

[0178] Figure 7 It is along Figure 1 The diagram shows a cross-sectional view of line DD and schematically illustrates an enlarged portion of the left frame 11c and the vibration providing mechanism 112a.

[0179] Figure 8 The left frame 11c and various parts of the vibration providing mechanism 112a are shown as viewed from the rear surface of the image display device 50. The line DD in the figure corresponds to... Figure 1 The line DD is shown. Furthermore, it can be said that... Figure 8 It shows Figure 7 The back cover 37 shown has been removed.

[0180] exist Figure 7 and 8 In the example shown, the image display device 50 includes a display panel 10, a frame 11 (left frame 11c), an optical sheet 32, a diffuser plate 33, a light source (with lens) 34, a light source substrate 35, a rear chassis 36, and a rear cover 37. Of these components, the components other than the rear cover 37 are those included in the functional mechanism that performs the image display function.

[0181] Any optical sheet, such as a diffuser, prism sheet, or protective sheet, can be used as optical sheet 32.

[0182] A diffuser plate 33 with any configuration can be used.

[0183] For example, a light-emitting diode (LED) or a laser diode (LD) is used as the light source 34. For example, any collimator lens is attached as the lens of the light source 34.

[0184] A light source substrate 35 with any configuration can be used.

[0185] The rear chassis 36 is made of a metal material such as aluminum. Any configuration may be used, unless otherwise specified.

[0186] The back cover 37 is made of a metal material such as aluminum. Any configuration may be used, without limitation.

[0187] The specific configuration of the functional mechanism that performs the image display function is not restricted and can adopt any configuration.

[0188] exist Figure 7 In the example shown, the rear chassis 36 includes a flat plate portion 36a and a tilted portion 36b. The flat plate portion 36a is parallel to the left-right and height directions, i.e., parallel to the display surface 14 of the display panel 10. The tilted portion 36b extends from each of the right and left ends of the flat plate portion 36a. The flat plate portion 36a is the portion corresponding to the rear side of the light source substrate 35.

[0189] The inclined portions 36b extend obliquely forward from each of the right and left ends of the flat plate portion 36a toward, for example, the right and left ends of the diffuser plate 33 arranged on the front side. The right inclined portion 36b and the left inclined portion 36b extend obliquely outward in the front direction, as viewed from the side of the flat plate portion 36a where the image is displayed (viewer's side).

[0190] The rear cover 37 is connected to the frame 11 (left frame 11c). The rear cover 37 is configured to extend at an angle, such that the portion of the rear cover 37 that is further to the right than the portion of the rear cover 37 connected to the left frame 11c is closer to the rear side. This configuration facilitates a thinner image display device 50.

[0191] like Figure 7 As shown, the vibration supply mechanism 112a is arranged in the space between the inclined portion 36b of the rear chassis 36 and the rear cover 37. The vibration supply mechanism 112a is arranged to contact the left frame 11c.

[0192] Specifically, the connecting portion 121a of the fixing member 121 of the vibration providing mechanism 112a is connected to the left end of the flat plate portion 36a of the rear chassis 36 by screws. In other words, the vibration providing mechanism 112a is fixed to the functional mechanism in this embodiment.

[0193] The retaining portion 121b of the fixing member 121 extends parallel to the inclined portion 36b of the rear chassis 36. The main body 151 of the vibration supply mechanism 112a is held by the retaining portion 121b. The contact member 118 connected to the actuator 117 in the vibration supply mechanism 112a is arranged to contact the vibration supply object surface 38 of the left frame 11c.

[0194] Vibration generated along the vibration axis V is transmitted to the vibration-providing surface 38 via the contact member 118. The vibration-providing surface 38 extends obliquely with respect to the depth direction to face the vibration-providing mechanism 112a. The vibration-providing surface 38 corresponds to the vibration-providing point.

[0195] Figure 9 This is a perspective view of the vibration providing mechanism 112a viewed from the upper right.

[0196] Figure 10 This is a top view of the vibration providing mechanism 112a as seen from above.

[0197] Figure 11 This is a side view of the vibration providing mechanism 112a viewed from the right.

[0198] Figure 12 It is along Figure 8 The sectional view of line DD in the figure, and corresponding to the sectional view of the vibration providing mechanism 112a viewed from the right.

[0199] Figures 13 to 15 Each component included in the vibration providing mechanism 112a is shown schematically.

[0200] The vibration providing mechanism 112a includes an actuator 117, a contact member 118, a body 151, a coil spring 120, and a fixing member 121. Furthermore, the vibration providing mechanism 112a includes a cover 152, a housing portion 153, a rear support member 154, a printed circuit board (PWB) 155, and wiring 156.

[0201] like Figure 14 As shown in A, the fixing member 121 includes a connecting portion 121a and a retaining portion 121b. The retaining portion 121b extends axially parallel to the vibration axis V and can retain the body 151 such that the body 151 can be clamped in the retaining portion 121b from the right and left sides.

[0202] In this embodiment, the fixing member 121 is made of SECC.

[0203] Figure 13 A is a perspective view of the main body 151.

[0204] Figure 13 B is a cross-sectional view of the main body 151 cut along a plane including the vibration axis V and parallel to the X direction.

[0205] Figure 13 C is a cross-sectional view of the main body 151 cut along a plane including the vibration axis V and parallel to the Y direction.

[0206] The main body 151 is generally T-shaped. A support hole 151a is formed in the middle portion of the front part of the main body 151 (on the left frame 11c side). The support hole 151a is formed inside the main body 151 and extends axially parallel to the vibration axis V. Therefore, the main body 151 is hollow.

[0207] like Figure 13 As shown in B, an attachment hole 151b is formed in the rear portion of the main body 151. A fastening member, such as a screw, is attached to the attachment hole 151b, and the main body 151 and the retaining portion 121b of the fixing member 121 are connected to each other.

[0208] like Figure 13 As shown in Figure A, attachment holes 151c are formed on each of the two sides of the support hole 151a. Fastening members such as screws are attached to the attachment holes 151c, and the body 151, cover 152, and rear support 154 are connected to each other. When these members are connected to each other on both sides of the support hole 151a, this results in increased durability of the vibration providing mechanism 112a.

[0209] like Figure 13 As shown in B, a step is formed in the front part of the main body 151 to serve as a front support 128 for supporting the front end of the helical spring 120.

[0210] In this embodiment, the main body 151 is a die-cast component made of aluminum alloy.

[0211] like Figure 12 As shown, the actuator 117 consists of two piezoelectric elements arranged side by side, extending axially parallel to the vibration axis V, as shown. Figure 3 As shown.

[0212] The leads of each of the two piezoelectric elements are routed to a PWB 155 disposed above the body 151. Furthermore, the leads are electrically connected to wiring 156 on the PWB 155.

[0213] Connector 157 is located at the front end of wiring 156, and wiring 156 and controller 13 are electrically connected to each other through connector 157.

[0214] The specific configuration of PWB 155, wiring 156 and connector 157 is not restricted, and wiring 156 and connector 157 can be designed arbitrarily.

[0215] like Figure 14 As shown in B, the contact member 118 is configured to be substantially cylindrical and extend axially parallel to the vibration axis V.

[0216] In this embodiment, the contact member 118 is made of brass.

[0217] In this embodiment, as Figure 12 As shown, the actuator 117 is housed in the housing portion 153. Furthermore, the housing portion 153, in which the actuator 117 is housed, is housed in the support hole 151a of the body 151.

[0218] like Figure 14 As shown in C, the housing portion 153 includes an upper housing 153a and a lower housing 153b. The hollow, substantially cylindrical housing portion 153, which extends parallel to the axial direction of the vibration shaft V, is composed of the interconnected upper housing 153a and lower housing 153b.

[0219] The upper housing 153a and the lower housing 153b are made of PC.

[0220] In this embodiment, the main body 151 and the housing portion 153 form a support member 19 (e.g., refer to...). Figure 2 ).

[0221] Once the actuator 117 is housed in the housing portion 153, the housing portion 153 is housed in the body 151. This enables high durability against impacts from, for example, lateral impacts relative to the vibration axis V.

[0222] exist Figure 15 An attachment hole 154a is formed in the middle portion of the rear support member 154 shown in Figure A. The rear portion of the main body 151 is inserted into the attachment hole 154a. Furthermore, the rear side of the rear support member 154 is supported by the flat plate portion of the retaining portion 121b of the fixing member 121, which is orthogonal to the vibration axis V.

[0223] like Figure 12 As shown, the rear support 154 is positioned further forward than the rear end 125 of the actuator 117 (closer to the left frame 11c). The rear support 154 supports the rear end of the coil spring 120.

[0224] In this embodiment, the rear support 154 is made of PC.

[0225] For example, such as Figure 15 As shown in B, the helical spring 120 is arranged to extend parallel to the axial direction of the vibration shaft V. Figure 15 The front end 120a of the helical spring 120 shown in B is composed of Figure 13 The main body 151 shown in Figure B is supported by the front support member 128. The rear end 120b of the coil spring 120 is supported by the rear support member 154.

[0226] Therefore, as Figure 12 As shown, the rear end 120b of the helical spring 120 is arranged further forward than the rear end 125 of the actuator 117. In other words, the entire helical spring 120 is arranged further forward than the rear end 125 of the actuator 117.

[0227] This allows for a smaller size of the vibration providing mechanism 112a in the front-to-back direction (depth direction), resulting in a more compact size. This, in turn, enables the image display device 50 to be made thinner and smaller.

[0228] like Figure 15 As shown in C, the cover 152 includes a through hole 152a that extends axially parallel to the vibration axis V. The contact member 118 transmits vibration to the left frame 11c through the through hole 152a.

[0229] The cover 152 is arranged to cover the main body 151 from above. The arrangement of the cover 152 enables improved durability of the vibration providing mechanism 112a. Furthermore, it facilitates operation, for example, when attaching the vibration providing mechanism 112a.

[0230] In this embodiment, the cover 152 is made of PC.

[0231] Cover 152 and rear support 154 can also be considered as components included in the support members according to the present technology.

[0232] Figure 16 and 17 A specific example of the configuration of the left frame 11c is illustrated schematically.

[0233] Figure 18 It is along Figure 16 Or a cross-sectional view of line DD as shown in 17, and corresponding to, for example Figure 7 The sectional view shown.

[0234] Figure 16 A shows the left frame 11c viewed from the front. Figure 16 A corresponds to the view from below in the diagram. Figure 18 The left frame 11c.

[0235] Figure 16 B shows the left frame 11c viewed from the left. Figure 16 B corresponds to the view from the left side of the diagram. Figure 18 The left frame 11c. For example, suppose you are viewing from the left. Figure 1 The image display device 50 is shown. In this case, the left frame 11c is in... Figure 16 The state shown in B.

[0236] Figure 17 A shows the left frame 11c as viewed from the rear. Figure 17 A corresponds to the view from above in the diagram. Figure 18 The left frame 11c.

[0237] Figure 17 B shows the left frame 11c viewed from the right. Figure 17 B corresponds to the view from the right side of the diagram. Figure 18 The left frame 11c. Alternatively, one could say, Figure 17 Figure B shows the left frame 11c as viewed from the side of the vibration providing mechanism 112a.

[0238] like Figure 18 As shown, the left frame 11c includes a front section 61 and a rear section 62. The front section 61 is the portion located in the front part of the left frame 11c when viewed from the front (corresponding to...). Figure 16 (A).

[0239] Viewed from above, the front section 61 has a generally rectangular cross-section with an opening corresponding to one of the sides of the rectangle. In other words, the front section 61 has a generally U-shaped cross-section with the opening located on the right side (on one side of the right frame 11d).

[0240] The front section 61 includes a front portion 61a located on its front side, a side portion 61b located on its left side, and a rear portion 61c located on its rear side. The front portion 61a and the side portion 61b are orthogonally connected to each other, and the side portion 61b and the rear portion 61c are orthogonally connected to each other. This results in them forming a generally U-shaped structure.

[0241] The rear section 62 has a flat plate shape extending parallel to the depth direction and is connected to the front end of the rear portion 61c of the front section 61. In other words, the rear section 62 includes a planar portion 62a extending parallel to the depth direction.

[0242] like Figure 16 As shown in B, the side portion 61b of the front section 61 in the planar direction and the planar portion 62a of the rear section 62 in the planar direction are parallel to each other. This causes them to collectively form the left side of the left frame 11c.

[0243] like Figure 16 and 17 As shown, connecting plate 63a is formed near the upper end of the left frame 11c, and connecting plate 63b is formed in the region occupying approximately half of the lower part of the left frame 11c. Connecting plates 63a and 63b are connected to the inclined portion 36b of the rear chassis 36 by means of, for example, screws.

[0244] A protrusion 65 is formed at a designated location between the upper and lower connecting plates 63a and 63b, which is included in the surface 38 of the vibration supply object. In the vertical direction, the position of the protrusion 65 corresponds to the position of the vibration supply point.

[0245] Positioning portions 66a and 66b are formed on both sides of the protrusion 65 in the vertical direction. When the vibration providing mechanism 112a is attached, each of the positioning portions 66a and 66b engages or contacts a designated portion on the front side of the vibration providing mechanism 112a.

[0246] This allows for easy attachment of the vibration supply mechanism 112a (positioned relative to the vibration supply mechanism 112a), thereby facilitating the operation during attachment. Furthermore, this allows for greater stability of the vibration supply mechanism 112a after it has been attached.

[0247] The specific configuration of the protrusion 65 is not limited, and any configuration that enables vibration to be provided on the object surface 38 can be adopted. Furthermore, the positioning portions 66a and 66b can also be arbitrarily designed with respect to the specific configuration of each of them.

[0248] In this embodiment, the left frame 11c is made of aluminum. The protrusion 65 and the positioning portions 66a and 66b may also be integrally formed with, for example, the front portion 61 and the rear portion 62.

[0249] like Figure 17 As shown in B, in the direction extending from the left frame 11c, the sound output area S is formed to include a position, namely the protrusion 65, where vibration is provided by the vibration providing mechanism 112a.

[0250] like Figure 18 As shown, the sound output region S is located in the side portion 61b of the front section 61, and compared with the portion other than the sound output region S, the sound output region S is configured to have a relatively small thickness. In this embodiment, a process to reduce the thickness is performed from the inside of the side portion 61b, which has a thickness of 2 mm, to form a sound output region S with a thickness of 1 mm.

[0251] In this embodiment, the length of the sound output area S in the vertical direction is set to 210mm. This makes it possible to provide a space with high-quality sound. Of course, the range is not limited to this.

[0252] Instead of the side portion 61b, or in addition to the side portion 61b, one (or all) of the front portion 61a, the rear portion 61c, and the planar portion 62a of the rear section 62 can be processed to reduce the thickness in order to form the sound output area S.

[0253] [Reproduction Control]

[0254] Figure 19 This is a schematic diagram illustrating an example of sound reproduction control performed by controller 13 included in the vibration controller.

[0255] Here, description Figure 1 The illustrated image display device 50 also includes examples of right and left low-mid range speakers 70a and 70b. The low-mid range speakers 70a and 70b are arranged near the lower frame 11b.

[0256] The specific configuration of each of the low-mid range loudspeakers 70a and 70b is not limited. For example, a common loudspeaker including, for example, a voice coil and a cone can be used.

[0257] An audio signal (e.g., a stereo signal) including sound information of the output object is provided to the DSP 71 included in the vibration controller. The audio signal may be provided to the DSP 71 from an optical recording medium or a semiconductor memory, or the audio signal may be provided to the DSP 71 from, for example, a network.

[0258] The DSP 71 performs digital audio signal processing, such as frequency correction, on the provided stereo signal. After the digital audio signal processing is performed by the DSP 71, the DSP 71 performs processing to convert the digital audio signal into an analog audio signal. As a result of the conversion processing, the left channel audio signal SL and the right channel audio signal SR are obtained as analog audio signals.

[0259] The sound signal SL is provided to the sound signal amplification circuit 72.

[0260] After the audio signal SL is amplified by the audio signal amplification circuit 72, the audio signal SL is provided to the analog high-pass filter (HPF) 73 and the analog low-pass filter (LPF) 74.

[0261] The simulated HPF 73 performs separation on the audio signal SL to obtain the audio signal HSL corresponding to the high-frequency components, and the simulated LPF 74 performs separation on the audio signal SL to obtain the audio signal LSL corresponding to the low-to-mid-range frequency components.

[0262] The sound signal HSL is provided to the vibration providing mechanism 12a, and the actuator 17 generates vibrations that depend on the sound signal HSL. The generated vibrations are transmitted to the left frame 11c, and the sound based on the sound signal HSL is reproduced from the left frame 11c.

[0263] The audio signal LSL is provided to the low-mid range speaker 70a. Then, the sound based on the audio signal LSL is reproduced from the low-mid range speaker 70a.

[0264] The audio signal SR is provided to the audio signal amplifier circuit 75.

[0265] After the audio signal SR is amplified by the audio signal amplification circuit 75, the audio signal SR is provided to the analog high-pass filter (HPF) 76 and the analog low-pass filter (LPF) 77.

[0266] The simulated HPF 76 performs separation on the audio signal SR to obtain the audio signal HSR corresponding to the high-frequency components, and the simulated LPF 77 performs separation on the audio signal SR to obtain the audio signal LSR corresponding to the low-to-mid-range frequency components.

[0267] The sound signal HSR is provided to the vibration providing mechanism 12b, and the actuator 17 generates vibrations that depend on the sound signal HSR. The generated vibrations are transmitted to the right frame 11d, and the sound based on the sound signal HSR is reproduced from the right frame 11d.

[0268] The audio signal LSR is provided to the low-mid range speaker 70b. Then, the sound based on the audio signal LSR is reproduced from the low-mid range speaker 70b.

[0269] Figure 20 The diagram illustrates how to output high-frequency sounds HSL and HSR, as well as low-to-mid-range frequency sounds LSL and LSR, for reproduction.

[0270] like Figure 20 As shown, the left frame 11c and the right frame 11d vibrate themselves, and sound is emitted around the left frame 11c and the right frame 11d. This allows for the provision of a higher level of perceived breadth and higher resolution high-frequency sound to the viewer. Furthermore, the sound image can be positioned at the center, and the positioning effect is stabilized.

[0271] Even if the image display device 50 includes a large screen, it is possible to prevent sound from being heard from the right and left sides. In other words, high-frequency sound can be provided directly to the viewer watching the video in front of the image display device 50.

[0272] Furthermore, in the left frame 11c and right frame 11d, the sound output area S is appropriately designed, for example, with regard to its position and length. This allows for an improvement in the perceived breadth and localization of the sound. Additionally, the high-frequency sounds HSL and HSR, as well as the low-mid-range frequency sounds LSL and LSR output from the low-mid-range speakers 70a and 70b respectively, can be presented to the viewer as a whole, without separating the high-frequency sounds HSL and HSR from the low-mid-range frequency sounds LSL and LSR. This results in a high-quality viewing environment.

[0273] Viewers can enjoy the content (work) while experiencing the impact of the video on a large screen, as well as a wider level of perceived sound and higher resolution sound content ranging from high-frequency sounds to low-to-mid-frequency sounds.

[0274] exist Figure 19 and 20 An example is described where the frame 11 and vibration-providing mechanism 12 are used as a tweeter. Without limitation, this technology can be applied to sound output within any frequency range.

[0275] As described above, in the image display device 50 according to this embodiment, a member included in the functional mechanism performing the image display function is vibrated as a vibration-providing member 15 by a vibration-providing mechanism 12. The vibration-providing mechanism 12 includes a support member 19 supporting an actuator 17. The support member 19 is biased toward the vibration-providing member 15 by a biasing member 20 disposed around the support member 19. Furthermore, the vibration-providing member 15 includes a sound output region S configured to have a relatively small thickness. This configuration enables the device to be thinner and smaller, and provides space for high-quality sound.

[0276] For example, television screens are getting larger and larger, while there is a desire for the device as a whole to become thinner and smaller. This technology can meet this need.

[0277] Figure 21 An example configuration of the vibration providing mechanism 90 is shown schematically as a comparative example.

[0278] Figure 21 The vibration-providing mechanism 90 shown can also directly vibrate the frame 91 of the image display device 900 to output sound. This makes it possible to provide viewers with a wider sense of sound perception and higher resolution high-frequency sound. Furthermore, the sound image can be positioned at the center and the positioning effect can be stabilized.

[0279] On the other hand, in the vibration providing mechanism 90, the helical spring 92 is arranged further back than the rear end 94 of the actuator 93 (arranged further away from the frame 91) in the axial direction of the vibration shaft V. This makes it difficult to reduce the size of the vibration providing mechanism 90 in the front-to-back direction (depth direction), thus making the size of the vibration providing mechanism 90 more compact. This makes it difficult to make the image display device 900 thinner and smaller. For example, when with Figure 7 The image display device 50 has a similar configuration (such as...). Figure 21 As shown in Figure B, it is difficult to accommodate the vibration providing mechanism 90 in the rear cover 95. In other words, the configuration of the coil spring 92 being arranged further back than the actuator 93 makes it difficult to make the outer cover thinner.

[0280] <Other Embodiments>

[0281] This technology is not limited to the above embodiments, and various other embodiments can be implemented.

[0282] refer to Figure 2 When the vibration providing mechanism 12 is attached, it may be connected only to the fixed-side member 30. Alternatively, the vibration providing mechanism 12 may be connected to a location different from the vibration providing point of the vibration providing target member 15. In this case, vibration can be provided to the vibration providing point. Of course, the vibration providing mechanism 12 may be connected to both the fixed-side member 30 and the vibration providing target member 15.

[0283] The reinforcing member can be connected to the fixed side member 30, and the fixed member of the vibration supply mechanism 12 can be connected to the reinforcing member.

[0284] Furthermore, the configuration and method of the attached vibration supply mechanism 12 are not limited and can be designed arbitrarily.

[0285] The function of the functional mechanism is not limited to image display. Furthermore, this function is not limited to functions performed via electrical control. For example, this technology can be applied to functional mechanisms that perform any function, such as sensing functions, temperature control mechanisms, and lighting control functions.

[0286] For example, a vibration-providing mechanism according to the present technology is attached to a picture frame, etc., for holding, for example, a painting. Sound is then output by vibrating the picture frame, etc. This configuration enables embodiments of a sound output device according to the present technology. Note that the picture frame, etc., can be considered as a functional mechanism performing, for example, the function of holding a painting.

[0287] The various configurations of the image display device, the components included in the image display device, the vibration providing mechanism, the components included in the vibration providing mechanism, etc., as described with reference to the accompanying drawings; sound generation control, etc., are merely embodiments and can be modified in any way without departing from the spirit of the present technology. In other words, for example, any other configuration and any other algorithm for practicing the present technology can be employed.

[0288] In the above description, terms such as "basically" or "approximately" have been appropriately used to describe, for example, shape. Such terms are only used to facilitate understanding of the description, and there is no particular significance in whether or not terms such as "basically" or "approximately" are used.

[0289] In other words, in this disclosure, expressions such as “center,” “middle,” “uniform,” “equal,” “identical,” “orthogonal,” “parallel,” “symmetrical,” “extended / extension,” “axial,” “cylindrical,” “cylindrical (shape),” “circular,” and “ring” are conceptually included, respectively, expressions such as “substantially center / basically center,” “substantially middle / substantially middle,” “substantially consistent,” “substantially equal,” “substantially identical,” “substantially orthogonal,” “substantially parallel,” “substantially symmetrical,” “substantially extended / substantially extended,” “substantially axial,” “substantially cylindrical,” “substantially cylindrical (shape),” “substantially circular,” and “substantially ring.”

[0290] For example, expressions such as “center,” “middle,” “uniform,” “equal,” “same,” “orthogonal,” “parallel,” “symmetrical,” “extend,” “axial,” “columnar,” “cylindrical (shape),” “circular,” and “ring” also include states within a specified range (e.g., a range of + / -10%) based on expressions such as “perfectly centered,” “perfectly in the middle,” “perfectly consistent,” “perfectly equal,” “identical,” “perfectly orthogonal,” “perfectly parallel,” “perfectly symmetrical,” “perfectly extended,” “perfectly axial,” “perfectly columnar,” “perfectly cylindrical (shape),” “perfectly circular,” and “perfectly ring.”

[0291] Therefore, conceptually, expressions that do not include phrases such as "basically" or "approximately" can also include expressions that do include phrases such as "basically" or "approximately". Conversely, states expressed using expressions that include phrases such as "basically" or "approximately" can include states such as "just / accurate", "completely", "perfect", or "perfect".

[0292] At least two of the features described above can also be combined. In other words, the various features described in the various embodiments can be combined arbitrarily, regardless of the embodiments. Furthermore, the various effects described above are not limiting, but merely illustrative, and may provide other effects.

[0293] Note that this technology can also be configured as follows.

[0294] (1) A sound output device, comprising:

[0295] Functional units that perform designated functions;

[0296] A vibration providing mechanism that causes a component included in the functional mechanism to vibrate as the vibration providing target component; and

[0297] A vibration controller controls vibration operations performed by a vibration-providing mechanism based on sound information.

[0298] Vibration supply mechanism includes

[0299] An actuator that generates vibration along a specified vibration axis, and includes a rear end located axially opposite the object component providing the vibration.

[0300] Support components for actuators, and

[0301] A biasing member, when viewed along the vibration axis, is disposed around the support member, and at least a portion of the biasing member is arranged axially closer to the vibration-providing member than the rear end of the actuator. The biasing member biases the support member toward the vibration-providing member.

[0302] The vibration-providing object component includes a sound output area configured to have a relatively small thickness.

[0303] (2) The sound output device according to (1), wherein

[0304] The biasing member is arranged such that it is closer to the vibration-providing object member in the axial direction of the vibration axis than the rear end of the actuator.

[0305] (3) The sound output device according to (1) or (2), wherein

[0306] The functional mechanism is capable of performing image display functions.

[0307] The functional components include the display panel and the frame supporting the display panel, as well as...

[0308] The vibration-provided object component is a frame included in the functional mechanism.

[0309] (4) The sound output device according to (3), wherein

[0310] The frame has a shape that extends in a specific direction, and

[0311] A region with a specified length in the extension direction is configured as the sound output region.

[0312] (5) The sound output device according to (4), wherein

[0313] The sound output area is configured to include a location in the extension direction of the frame where vibration is provided by the vibration providing mechanism.

[0314] (6) The sound output device according to any one of (3) to (5), wherein

[0315] The vibration-providing components are the left and right frames. When the display panel is viewed from the front, the left frame supports the left edge of the display panel, and when the display panel is viewed from the front, the right frame supports the right edge of the display panel.

[0316] (7) The sound output device according to any one of (3) to (6), wherein

[0317] The functional components include the rear chassis, and

[0318] The vibration supply mechanism is fixed to the rear chassis.

[0319] (8) The sound output device according to any one of (1) to (7), wherein

[0320] Vibration-providing components are essential components for a functional mechanism to perform its specified function.

[0321] (9) The sound output device according to any one of (1) to (8), wherein

[0322] The vibration supply mechanism includes a contact member connected to the actuator and in contact with the vibration supply object member.

[0323] (10) The sound output device according to any one of (1) to (8), wherein

[0324] The vibration providing mechanism includes a fixing member for securing the support member to the functional mechanism.

[0325] (11) The sound output device according to any one of (1) to (10), wherein

[0326] The biasing member is a helical spring arranged around the supporting member.

[0327] (12) The sound output device according to any one of (1) to (11), wherein

[0328] Actuators include piezoelectric elements or dielectric elastomers.

[0329] (13) The sound output device according to any one of (1) to (12), wherein

[0330] The support structure is hollow and houses the actuator.

[0331] (14) The sound output device according to any one of (1) to (13), wherein

[0332] The supporting components are die-cast components or pressing components.

[0333] (15) A vibration providing mechanism for vibrating a vibration-providing object component, the vibration providing mechanism comprising:

[0334] An actuator that generates vibration along a specified vibration axis, and includes a rear end located axially opposite the object component providing the vibration.

[0335] Support components for actuators, and

[0336] A biasing member, when viewed along the vibration axis, is disposed around a support member, and at least a portion of the biasing member is arranged to be closer to the vibration-providing member in the axial direction of the vibration axis than the rear end of the actuator, the biasing member biasing the support member toward the vibration-providing member.

[0337] Reference Mark List

[0338] S-Sound Output Area

[0339] V-vibration shaft

[0340] 10 display panels

[0341] 11 (11a to 11d) framework

[0342] Vibration supply mechanism 12(12a, 12b), 112a, 112b

[0343] 13 controllers

[0344] 15 Vibration provides the object component

[0345] 17, 117 actuators

[0346] 18, 118 contact components

[0347] 19 Supporting Components

[0348] 20, 120 offset components (coil springs)

[0349] 21, 121 Fixed Components

[0350] 23a, 23b piezoelectric elements

[0351] 25, 125 backend

[0352] 36 rear chassis

[0353] 37 back cover

[0354] 38 vibrations provide the surface of the object

[0355] 50 Image Display Devices

[0356] 71DSP

[0357] 151 main body

[0358] 152 caps

[0359] 153 Casing Part

Claims

1.A sound output apparatus comprising: a function mechanism that performs a specified function; a vibration providing mechanism that vibrates a member included in the function mechanism as a vibration providing object member; and a vibration controller that controls a vibration operation performed by the vibration providing mechanism based on sound information, the vibration providing mechanism includes an actuator that generates vibration along a specified vibration axis and includes a rear end located at a position opposite to the vibration providing object member in an axial direction of the vibration axis, a support member that supports the actuator, a biasing member that is disposed around the support member when viewed along the vibration axis and at least a portion of which is arranged closer to the vibration providing object member than the rear end of the actuator in the axial direction of the vibration axis, the biasing member biasing the support member toward the vibration providing object member, and a fixing member that fixes the support member, the fixing member including a holding portion in which an attachment hole extending in parallel to the axial direction of the vibration axis is formed, a rear portion of the support member being held by being inserted into the attachment hole, and the rear end of the biasing member being supported by the holding portion, the vibration providing object member includes a sound output region configured to have a relatively small thickness, wherein the entirety of the biasing member is arranged closer to the vibration providing object member than the rear end of the actuator in the axial direction of the vibration axis. 2.The sound output apparatus according to claim 1, wherein the function mechanism is capable of performing an image display function, the function mechanism includes a display panel and a frame that supports the display panel, and the vibration providing object member is the frame included in the function mechanism. 3.The sound output apparatus according to claim 1, wherein the frame has a shape extending in a certain direction, and a region having a specified length in the extending direction is configured as the sound output region. 4.The sound output apparatus according to claim 3, wherein the sound output region is configured to include a position at which vibration is provided by the vibration providing mechanism in the extending direction of the frame. 5.The sound output apparatus according to claim 2, wherein the vibration providing object member is a left frame that supports a left edge of the display panel when the display panel is viewed from the front and a right frame that supports a right edge of the display panel when the display panel is viewed from the front. 6.The sound output apparatus according to claim 2, wherein the function mechanism includes a rear chassis, and the vibration providing mechanism is fixed to the rear chassis. 7.The sound output apparatus according to claim 1, wherein the vibration providing object member is a member that is indispensable when the function mechanism performs the specified function. 8.The sound output apparatus according to claim 1, wherein the vibration providing mechanism includes a contact member connected to the actuator and in contact with the vibration providing object member. 9.The sound output apparatus according to claim 1, wherein the vibration providing mechanism includes a fixing member for fixing the support member to the function mechanism. 10.The sound output apparatus according to claim 1, wherein the biasing member is a coil spring arranged around the support member. 11.The sound output apparatus according to claim 1, wherein the actuator includes a piezoelectric element or a dielectric elastomer. 12.The sound output device according to claim 1, wherein the support member is hollow and accommodates the actuator therein. 13.The sound output device according to claim 1, wherein the support member is a die-cast member or a press member. 14.A vibration providing mechanism that vibrates a vibration-provided object member, the vibration providing mechanism comprising: an actuator that generates vibration along a specified vibration axis and includes a rear end located in an opposite position to the vibration-provided object member in an axial direction of the vibration axis, a support member that supports the actuator, a biasing member that is disposed around the support member when viewed along the vibration axis and at least a portion of which is arranged closer to the vibration-provided object member than the rear end of the actuator in the axial direction of the vibration axis, the biasing member biasing the support member toward the vibration-provided object member, and a fixing member that fixes the support member, the fixing member including a holding portion in which an attachment hole is formed, the attachment hole extending in parallel to the axial direction of the vibration axis, a rear portion of the support member being held by being inserted into the attachment hole, and the rear end of the biasing member being supported by the holding portion, wherein the entirety of the biasing member is arranged closer to the vibration-provided object member than the rear end of the actuator in the axial direction of the vibration axis.

Images