JP2007153251A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of low noise when vibration is applied, in regard to a display device having a display part displaceable in relation to a main body part. <P>SOLUTION: The display device is provided with the display part 200, the main body part and a frame body 100 provided in a front surface of the main body part, and the frame body 100 is formed with guide grooves 110 in the vertical direction in the inner wall of both of side surfaces thereof. This display device 10 is also provided with a slide mechanism 130 for turnably holding a lower part of the side surfaces of the display part 200 and while moving the lower part of the display part 200 forward and backward, a guide arm 120 having projection parts 121 and 122 to be engaged with the guide grooves 110 and connected to the display part 200 freely to turn around the projection part 121, and a screw spring 150 provided between the display part 200 and the projection part 121 to energize the guide arm 120 with the force in the rotating direction around the center of the projection part 121 so as to fit the projection part 122 in the guide groove 110. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technology of a display device, and more particularly to a technology of a display device in which a display unit can be displaced with respect to a main body unit.

  2. Description of the Related Art Conventionally, an in-vehicle display device that includes a display unit and a main body unit and is configured to be displaceable with respect to the main body unit is known. Many of the in-vehicle display devices realize displacement of the display unit by a slide mechanism that moves the display unit in the front-rear direction and a guide mechanism that is provided on a side surface of the display unit. Specifically, the slide mechanism is configured by a slide tray or the like that rotatably holds the lower part of the display unit and moves the lower part of the display unit in the front-rear direction. The guide mechanism includes guide grooves formed in the vertical direction on both sides of the front surface of the main body and guide pins that engage with the guide grooves provided on both side surfaces of the upper portion of the display unit. When the lower part of the display unit is moved forward and rearward by the slide mechanism, the guide pins attached to the upper part of the side surface of the display unit are guided by the guide grooves and moved in the vertical direction, and the display unit is inclined.

  However, since the above-mentioned in-vehicle display device has a predetermined clearance between the guide pin and the guide groove, a low-frequency sound (between the guide pin and the guide groove) due to the influence of vibration generated when the vehicle travels. (Vibration sound) occurs.

  A technique for solving this problem is disclosed in Patent Document 1. In Patent Document 1, a dedicated component (tension member) that applies a predetermined force to the guide pin is installed between the back surface of the display unit and the front surface of the main body unit. Since the tension member engages the guide pin and the guide groove of the main body portion in a press-contact state, it is possible to prevent generation of lower sounds due to vibration.

Japanese Patent Laid-Open No. 11-22725

  However, the above-mentioned Patent Document 1 has a problem that the production cost is increased because a complicated mechanism is added in order to prevent lower sounds caused by vibration of the vehicle. Specifically, in Patent Document 1, it is necessary to prepare a dedicated component (tension member) having a rubber roller, which increases the component cost. Further, in Patent Document 1, a tension member is fixed to a position different from the mechanism for moving the display unit, that is, to the back surface part of the display unit, and provided at one end of the tension member on the front surface part of the main body unit. The troublesome work of pressing the rubber roller is necessary.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent the generation of lower sounds when vibration is applied in an in-vehicle display device in which the display unit can be displaced with respect to the main body. There is to do.

  In order to solve the above problems, one embodiment of the present invention includes a display unit that displays an image, a main body unit, and a substantially rectangular tube-shaped frame body provided on a front surface of the main body unit. The unit is applied to a vehicle-mounted display device that is movable with respect to the main body. Here, it is assumed that guide grooves are formed on the inner walls of both side surfaces of the frame body in a substantially vertical direction.

  The in-vehicle display device includes a slide mechanism that rotatably holds the lower portion of the side surface of the display unit and reciprocates the lower portion of the display unit in the front-rear direction, and a first protrusion formed on one end. A second projection formed on the other end, and a guide member connected to an upper portion of the side surface of the display unit so as to be rotatable about the center of the first projection, the display unit, An elastic member provided between the guide member, the first protrusion and the second protrusion of the guide member are engaged with the guide groove, and the elastic member is The second projection is brought into contact with the guide groove by urging a force in the rotational direction to the other end of the guide member with the one projection as a center.

  As described above, according to the present invention, in the in-vehicle display device, the guide member on which the first protrusion and the second protrusion are formed is attached to the upper part of the side surface of the display unit, and further, between the display unit and the guide member. An elastic member is provided. The guide member is connected to the upper part of the side surface of the display unit so as to be rotatable around the center of the first protrusion. The first protrusion and the second protrusion are engaged with the guide groove. Since the elastic member urges the guide member in the rotational direction to bring the second protrusion into contact with the guide groove, it is possible to prevent the generation of lower sounds when vibration is applied to the vehicle. That is, according to the present invention, when a vibration is applied to a vehicle with a simple configuration in which a guide arm formed with two protrusions and an elastic member are employed in the connecting portion between the display portion and the main body portion. Generation of lower sounds can be prevented.

  Hereinafter, an embodiment of an in-vehicle display device to which the present invention is applied will be described with reference to the drawings.

  First, the outline | summary of the vehicle-mounted display apparatus of this embodiment is demonstrated using FIGS. 1-2 and 5. FIG.

  1 and 2 are side views for explaining the movable structure of the display unit of the in-vehicle display device according to the embodiment of the present invention. FIG. 5 is a perspective view schematically showing the display device according to the embodiment of the present invention.

  As shown in FIG. 5, an in-vehicle display device (hereinafter simply referred to as “display device”) 10 performs various types of information processing such as a display unit 200 including a display panel 201 for displaying an image and image data generation processing. The main body 300, a substantially rectangular tube-shaped frame (inner escutcheon) 100 attached to the front surface of the main body 300, and the lower side of the display 200 (the lower portions of the side surfaces 205a and 205b) are rotatably held. And a slide mechanism 130 that is movable in the front-rear direction (Z direction).

  The slide mechanism 130 includes a holding portion 131 that rotatably holds the lower portion of the side surface of the display unit 200, driving means such as a motor (not shown), and a slide arm 132 that is slid in parallel in the front-rear direction by the driving force of the driving means. And have. The slide arm 132 reciprocates in the front-rear direction by a push button operation or the like (not shown) provided on an operation unit (not shown) or a remote controller (not shown) of the display device 10. In addition, the slide mechanism 130 of this embodiment shall be implement | achieved by the existing technique.

  Cam grooves 110 (see FIGS. 1 and 2) are formed in a substantially vertical direction (Y direction) on the left and right inner walls of the frame body 100 (inner walls of the side surfaces 100a and 100b constituting the frame body 100). As shown in FIG. 2, a guide arm 120 having two protrusions (protrusion part a120 and protrusion part b121) is attached to the upper part of the side surface of display part 200 (the upper part of each of side surfaces 205a and 205b). The protrusions (protrusion part a120 and protrusion part b121) are engaged with the cam mechanism 110.

  When the slide arm 132 of the slide mechanism 130 is moved in the front-rear direction (Z direction) by the driving means, the protrusions (the protrusions a120 and b121) of the guide arm 120 attached to the upper part of the side surface of the display unit 200 are cammed. The angle of the display unit 200 with respect to the main body unit 300 is changed by being guided by the mechanism 110 and moving up and down. For example, as shown in FIGS. 2A and 2B, the guide arm 120 moves the cam groove 110 downward (Y direction), whereby the angle of the display unit 200 with respect to the main body 300 changes.

  Further, in the display device 10 of the present embodiment, an elastic member such as a torsion coil spring (hereinafter referred to as “twist spring”) 150 is attached between the display unit 200 and the guide arm 120 (see FIGS. 1 and 2). The guide arm 120 is pressed against the cam groove 110 by the force of the torsion spring 150 urging the guide arm 120. As a result, the display device 10 can prevent vibration sound generated between the guide arm 120 and the cam groove 110 even when the vehicle vibrates. Hereinafter, a configuration for preventing vibration noise that occurs between the guide arm 120 and the cam groove 110 will be specifically described.

  First, the guide arm 120 will be described. As shown in FIGS. 1 and 2, the guide arm 120 includes a protrusion a121 formed in a substantially cylindrical shape at one end and a protrusion b122 formed in a substantially cylindrical shape at the other end. The guide arm 120 is provided with a locking portion 123 for fixing the torsion spring 150. The guide arm 120 is attached to the upper part of the side surface of the display unit 200 so as to be rotatable about the circle center of the projection part a121.

Next, the torsion spring 150 of this embodiment will be described with reference to FIG.
FIG. 3 is a schematic view of a torsion spring used in the present embodiment. As illustrated, the torsion spring 150 includes a coil portion 151 wound in a coil shape and two arms 152 and 153 protruding from the coil portion 151. For the torsion spring 150, a coil portion 151 not tightly wound (pitch wound) is used. When the torsion spring 150 that is not tightly wound is fitted between the guide arm 120 and the display unit 200 (that is, when the coil unit 151 is compressed), the stress in the X direction shown in the figure ( Pressure).

  In the present embodiment, specific values such as the pitch, coil diameter, pitch angle, linearity, and number of coil turns of the coil portion 151 of the torsion spring 150 are not particularly limited. These values may be designed by obtaining necessary loads according to the relationship with other configurations of the display device 10 (for example, the size and mass of the display unit 200).

  And the coil part 151 of this torsion spring 150 is fitted between the display part 200 and the guide arm 120 (the display part 200 and the guide are sandwiched between the arms 120). In addition, one arm 153 of the torsion spring 150 is fixed to a locking portion 210 provided on the side surface of the display unit 200, and the other arm 152 is fixed to a locking portion 123 of the guide arm 120.

  Next, a connection relationship between the protrusion part a121 of the guide arm 120, the display unit 200, and the frame body 100 will be described with reference to FIG. FIG. 4 is a top view of the display unit and the frame body of the display device. In FIG. 4, for convenience of explanation, a connection portion between the protruding portion a <b> 121 of the guide arm 120 and the display 200 and the frame body 100 is shown in a cross-sectional view.

  As shown in the figure, a substantially cylindrical support shaft 220 is provided upright on the upper side surface portion (the upper portion of each of the side surfaces 205a and 205b) of the display unit 200. Further, the projection a121 of the guide arm 120 is formed with a hole 1210 that is rotatably attached to the support shaft 220 and a spring holding portion 1211 for compressing and holding the coil portion 151 of the torsion spring 150.

  Then, the coil portion 151 of the torsion spring 150 is inserted into the support shaft 220, the hole 1210 of the protrusion a 121 of the guide arm 120 is inserted into the support shaft 220 from above, and the coil portion 151 of the torsion spring 150 is attached by the spring holding portion 1211. Hold in a compressed state. Further, the protruding portion a121 is fixed to the support shaft 220 by screwing or the like (the guide arm 120 fixes the support shaft 220 so as to be rotatable). The fixing method is not particularly limited. Thus, by holding the torsion spring 150 in a compressed state between the display unit 200 and the guide arm 120, a pressing force in the G direction shown in the figure acts on the protrusion a121 of the guide arm 120.

  Further, the protrusions a 121 and b 122 of the guide arm 120 attached to the display unit 200 are engaged with the cam grooves 110 formed in the frame body 100. When the protrusion a121 of the guide arm 120 is engaged with the cam groove 110, adjustment is performed so that the pressing force in the G direction of the protrusion a121 is applied to the surface 1110 of the cam groove 110 facing the protrusion a121. . By doing so, the projecting portion a121 is pressed against the opposing surface 1100 of the cam groove 110, so that it is possible to prevent the generation of vibration noise generated between the guide arm 120 and the cam groove 110. That is, since the protruding portion a121 is in pressure contact with the opposing surface 1100 of the cam groove 110, it does not rattle even when it receives vibration in the left-right direction (X direction).

  Further, as shown in FIG. 2, the torsion spring 150 biases the guide arm 120 with a force that rotates in the F direction about the circle center of the protruding portion a <b> 121. Due to the force in the F direction, the protrusion b122 of the guide arm 120 is pressed against the side surface 1101 of the cam groove 110. Thus, in this embodiment, since the protrusion b122 of the guide arm 120 is in pressure contact with the side surface 1101 of the cam groove 110, the contact sound between the guide arm 120 and the cam groove 110 even when the vehicle vibrates. Will not occur. That is, since the protrusion b122 is pressed against the side surface 1101 of the cam groove 110, the protrusion b122 does not rattle even when subjected to vibration in the front-rear direction (Z direction).

  As described above, in this embodiment, in order to move the display unit 200, the guide arm 120 including the two projections 121 and 122 is rotatably attached to the display unit 200, and the projection is attached to the cam groove 110. The structure engaged with is adopted. Then, by attaching a torsion spring 150 between the guide arm 120 and the display unit 200, the protrusions 121 and 122 of the guide arm 120 are brought into pressure contact with the guide groove 110 by the stress of the torsion spring 150. Specifically, in the present embodiment, due to the stress of the torsion spring 150, a force that rotates in the F direction about the circle center of the protrusion 121 acts on the guide arm 120. Therefore, since the protrusion 122 formed at one end of the guide arm 120 is in pressure contact with the side surface 1101 of the cam groove 110, it does not rattle even when subjected to vibration in the front-rear direction (Z direction).

  Further, in the present embodiment, a coil spring 151 that is not tightly wound (pitch wound) is used for the torsion spring 150, and the coil portion 151 is compressed between the display unit 200 and the guide arm 120. It is designed to be sandwiched and held. Therefore, in the torsion spring 151, a force pressing in the G direction acts on the protrusion 121 due to the stress in the G direction shown in FIG. As a result, the protruding portion 121 formed at one end of the guide arm 120 is in pressure contact with the opposing surface 1100 of the cam groove 110, and thus rattle even when subjected to vibration in the left-right direction (X direction). Absent.

  As described above, according to the present embodiment, a simple configuration in which the guide arm including the two projecting portions and the torsion spring 150 in which the coil portion 151 is not tightly wound is provided, and the vibration noise caused by the vibration in the front-rear direction is provided. It is possible to prevent the vibration noise caused by the vibration in the left-right direction. In addition, although the tension member described in Patent Document 1 described above applies a force in the front-rear direction to the guide pin, it does not apply a force in the left-right direction to the guide pin. Therefore, in the method using the tension member disclosed in Patent Document 1, when the in-vehicle display device receives strong vibration in the left-right direction, it may not be possible to prevent the generation of the lower sound.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the gist of the present invention. For example, in the description of the above embodiment, the torsion spring 150 rotates the guide arm 120 in the F direction, but this is merely an example. A torsion spring that rotates the guide arm 120 in the direction opposite to the F direction may be used.

  Moreover, in the said embodiment, although the case where the torsion spring 150 was applied to the elastic member was taken as an example, it does not specifically limit to this. As long as the stress in the F direction (see FIG. 2) and the G direction (see FIG. 4) is applied to the guide arm 120, the elastic member may be other than the torsion spring.

It is a side view for demonstrating the movable structure of the display part of the display apparatus of embodiment of this invention. It is a side view for demonstrating the movable structure of the display part of the display apparatus of embodiment of this invention. It is the schematic of the torsion spring utilized in embodiment of this invention. It is the figure which looked at the display part and frame of the display apparatus of embodiment of this invention from the top. It is a perspective view which shows the outline of the display apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Display apparatus, 100 ... Frame, 110 ... Cam groove, 120 ... Guide arm, 121 ... Projection a, 122 ... Projection b, 123 ... Locking part, 130 ... Slide mechanism, 131 ... Holding part, 132 ... Slide arm , 150 ... torsion spring, 151 ... coil part, 152 ... arm, 153 ... arm, 200 ... display part

Claims (3)

A display device comprising: a display unit for displaying an image; a main body unit; and a substantially rectangular tube-shaped frame provided on a front surface of the main body unit, wherein the display unit is movable with respect to the main body unit. There,
Guide grooves are formed in the inner walls on both side surfaces of the frame body in a substantially vertical direction,
A slide mechanism that rotatably holds the lower part of the side surface of the display unit and reciprocates the lower part of the display unit in the front-rear direction;
A first protrusion is formed at one end, a second protrusion is formed at the other end, and is connected to the upper part of the side surface of the display unit so as to be rotatable around the center of the first protrusion. A guide member,
An elastic member provided between the display unit and the guide member,
The first protrusion and the second protrusion of the guide member are engaged with the guide groove,
The elastic member brings the second protrusion into contact with the guide groove by urging a force in the rotation direction to the other end of the guide member around the first protrusion. Display device. The display device according to claim 1,
The display device according to claim 1, wherein the elastic member is a torsion spring including a coil portion. The display device according to claim 2,
The coil portion is not tightly wound, and is sandwiched in a compressed state between the display portion and the first projection of the guide member, and the first projection faces the guide groove. A display device characterized by being elastically pressed.

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