JP2004101832A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which can suppress the degradation of operability as much as possible even when an electric motor mechanism driving an angle changing mechanism of a display panel is omitted. <P>SOLUTION: The display device is provided with a Scott-Russell mechanism 31 for changing an angle of a display panel 20 in the range from close angle to open angle through intermediate angle, a coil spring 55 which urges a slide plate 32 of the Scott-Russell mechanism 31 in the direction from the close angle position to the intermediate angle position and a push-lock mechanism 40 which restricts the slide plate 32 at the open angle position so as to prevent the slide plate 32 from sliding to the intermediate angle position side on the front side from the open angle position. The push-lock mechanism 40 restricts the slide plate 32 on the process where the slide plate 32 retreats from the intermediate angle position and attains the close angle position. When the slide plate 32 is further allowed to retreat slightly from the close angle position, the restraint of the slide plate 30 is released. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device including a display panel and an angle changing mechanism for changing an angle of the display panel.
[0002]
[Prior art]
2. Description of the Related Art As a conventional display device, for example, there is one disclosed in Patent Document 1 below.
[0003]
The display device described in Patent Document 1 includes a display panel, a housing in which a storage medium reproducing device, a control circuit, and the like are provided, a Scott-Russell mechanism for changing the angle of the display panel, and the Scott-Russell mechanism. An electric mechanism for driving the Russell mechanism. The display panel uses a Scott Russell mechanism to close the storage medium insertion opening of the housing and allow the operator to view the screen, and the storage panel is displaced 90 ° from this closed position to open the storage medium insertion opening of the housing. Opening / closing operation between the open position.
[0004]
The electric mechanism is housed in the housing, and is a link mechanism for driving an arm, which is one component of the Scott Russell mechanism, a plurality of gears for driving the link mechanism, and for rotating the gears. , A drive circuit for the motor, and operation buttons for giving a drive instruction to the drive circuit.
[0005]
[Patent Document 1]
JP-A-2000-339944 (FIG. 2)
[0006]
[Problems to be solved by the invention]
The above-described conventional technology has an advantage that the angle of the display panel can be displaced only by operating the operation button, but since the electric mechanism is provided, the space in the housing is reduced, and the manufacturing cost is reduced. However, there is a problem that it also increases.
[0007]
The present invention focuses on such a conventional problem and eliminates the electric mechanism to effectively use the space in the housing and reduce the manufacturing cost, while reducing the operability due to the deletion of the electric mechanism. It is an object to provide a display device that can be suppressed as much as possible.
[0008]
[Means for Solving the Problems]
A display device for achieving the above object,
A display panel, and an angle changing mechanism for displacing the display panel between a first angle and a second angle,
The angle changing mechanism,
A slide member having one end pinned to one part of the display panel, and an arm member having one end pin fixed to another part of the display panel; A Scott Russell mechanism that swings the arm member by sliding to displace the display panel between the first angle and the second angle;
From the position of the slide member when the display panel is at the first angle (hereinafter referred to as a first position), the position of the slide member when the display panel is at the second angle (hereinafter referred to as a second position). To), an urging member for urging the slide member;
A lock mechanism for restraining the slide member at the first position so that the slide member does not slide toward the second position;
Has,
The lock mechanism restrains the slide member in the process of moving the slide member from the second position to the first position, and slightly slides the slide member from the first position to a direction opposite to the second position. The push lock mechanism releases the restraint of the slide member when the slide member is operated.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a display device according to the present invention will be described with reference to the drawings.
[0010]
The display device according to the present embodiment is a display device mounted on a vehicle, as shown in FIG. 1, a housing 10 in which a storage medium reproducing device, a control circuit, and the like are stored, a display panel 20, and a display panel 20. And an angle changing mechanism 30 for changing the angle of. In the housing 10, as playback devices, a CD playback device (first playback device) that plays back a CD (first storage medium) storing music information and the like, and a DVD (map information and the like) stored therein. And a DVD reproducing device (second reproducing device) for reproducing the second storage medium.
[0011]
The housing 10 has a rectangular parallelepiped shape, and has a front wall 11 forming a front surface thereof, and a CD entrance 12 and a DVD entrance 13 (shown in FIG. 9). In addition, for convenience of the following description, the front wall 11 side is defined as the front and the opposite direction is defined as the rear with respect to the rear wall 14 of the housing 10.
[0012]
The display panel 20 is closed by the angle changing mechanism 30 such that the rear surface 24 of the display panel 20 faces the front wall 11 of the housing 10 and closes the CD entrance 12 and the DVD entrance 13 (shown in FIGS. 2 to 4). The display surface 21 of the display panel 20 faces the front wall 11 of the housing 10 through an intermediate angle (shown in FIGS. 5 to 7) in which the display panel 20 closes the DVD entrance 13 and opens the CD entrance 12. It becomes a right angle and is angularly displaced up to an opening angle (shown in FIGS. 8 to 10) for opening the CD entrance 12 and the DVD entrance 13.
[0013]
As shown in FIGS. 1, 5, and 7, the angle changing mechanism 30 includes a Scott Russell mechanism 31 including a slide plate (slide member) 32, a swing arm (arm member) 39, and a support arm 38. An urging mechanism 50 for urging the slide plate 32 of the Scott Russell mechanism 31 forward, a push lock mechanism 40 for restricting the slide plate 32 to a predetermined position against the urging force of the urging mechanism 50, A buffer mechanism 56 for regulating the moving speed of the slide plate 32 by the urging mechanism 50 and an intermediate angle holding mechanism 60 for temporarily holding the display panel 20 at an intermediate angle are provided.
[0014]
The horizontal width of the slide plate 32 of the Scott Russell mechanism 31 is slightly shorter than the horizontal width of the housing 10 so as to fit in the housing 10. The slide plate 32 has a slide plate main body 33 arranged in parallel with the bottom plate of the housing 10, and slide arm portions 36 formed at both ends of the slide plate main body 33. A guide hole 34 extending in the front-rear direction is formed in the slide plate body 33, and a guide pin 35 is inserted therethrough. The guide pins 35 are fixed to the bottom wall 15 of the housing 10. The slide plate 32 is guided by the guide pins 35 and slides in the front-rear direction. The front end portion 37 of the slide arm portion 36 extends forward from the front end portion of the slide plate main body 33, and the lower portion of the side surface of the display panel 20 is pin-joined thereto. The support arm 38 of the Scott Russell mechanism 31 is attached to a side wall of the housing 10, and a swing arm 39 is pin-joined to a front end thereof. The center of the side surface of the display panel 20 is joined to the front end of the swing arm 39 with a pin.
[0015]
As shown in FIG. 2, when the display panel 20 is in the closed angle, the slide plate 32 of the Scott Russell mechanism 31 is located at the closed angle position where it is pushed into the back of the housing 10, and the swing arm The front end of 39 is upward. When the slide plate 32 slides forward from this state, as shown in FIG. 5, the lower end of the display panel 20 pin-joined to the slide arm portion 36 of the slide plate 32 also moves forward while the display panel 20 moves forward. The forward movement of the central portion of the display panel 20 is regulated by the swing arm 39, so that the display panel 20 is inclined with its lower end protruding forward and its upper end remaining rearward, and has the aforementioned intermediate angle. .
[0016]
When the slide plate 32 of the Scott Russell mechanism 31 slides further forward from the position in FIG. 5 (intermediate angle position), the inclination of the display panel 20 becomes larger, and the display panel 20 finally becomes as shown in FIG. In addition, the display surface 21 of the display panel 20 is parallel to the top wall 16 of the housing 10 and has the above-mentioned open angle.
[0017]
As shown in FIGS. 1 and 5, the urging mechanism 50 for urging the slide plate 32 of the Scott Russell mechanism 31 forward is extended in the front-rear direction with the spring hook pin 51 fixed to the slide plate main body 33. A guide plate 52 having a guide hole 53 formed therein, and a coil spring (biasing member) 55 having one end attached to a spring hook pin and the other end attached to a front end 54 of the guide plate. are doing. The coil spring 55 extends when the slide plate 32 is in the closed angle position, and urges the slide plate 32 in the direction from the closed angle position to the intermediate angle position.
[0018]
As shown in FIGS. 1 and 5, the buffer mechanism 56 includes a rack 57 fixed to the bottom wall 15 of the housing 10 and a damper 58 fixed to the slide plate body 33. The teeth of the rack 57 extend in the front-rear direction. The damper 58 includes a gear 59 that engages with the rack, and a gear case that rotatably stores the gear 59 and stores a viscous fluid. When the slide plate 32 slides forward by the urging force of the urging mechanism 50, the slide plate 32 moves relative to the rack 57 fixed to the housing 10 and is attached to the slide plate 32. The gear 59 of the damper 58 rotates while receiving resistance from the viscous fluid. The resistance from the viscous fluid acts as a force against the urging force of the urging mechanism 50, and regulates the moving speed of the slide plate 32 to a certain speed or less.
[0019]
As shown in FIGS. 7 and 11, the intermediate angle holding mechanism 60 includes a leaf spring 61 attached to the bottom wall 15 of the housing 10 and a leaf spring engagement hole 63 formed in the slide plate body 33. ,have. The leaf spring 61 is partially bent, and forms an engaging portion 62 that fits into the leaf spring engaging hole 63 of the slide plate main body 33. The leaf spring engagement hole 63 is formed at a position where the engagement portion 62 of the leaf spring 61 attached to the housing 10 can be fitted when the slide plate 32 is located at the intermediate angle position. The force by which the engaging portion 62 of the leaf spring 61 fits into the leaf spring engaging hole 63 of the slide plate 32 and holds the slide plate 32 at that position is determined by the slide plate 32 that has been slid by the urging force of the urging mechanism 50. It is sufficient to stop and maintain that state, so that the force is relatively small. Therefore, if the display panel 20 held at the intermediate angle is manually operated and moved, and the slide plate 32 held at the intermediate angle position is slid lightly forward or backward, the holding at the intermediate angle position is achieved. Easy release.
[0020]
The push lock mechanism 40 includes a lock pin 41 fixed to the slide plate body 33, a hook member 42 for hooking the lock pin 41, a swing shaft 46 of the hook member 42, and a lock pin 41. And a torsion spring 47 for urging the hook member 42 in the hooking direction. As shown in FIG. 12, the hook member 42 hooks the locking pin 41, the guide 43 guides the locking pin 41 to the hook 44, and releases the locking pin 41 from the hook 44. And a release unit 45.
[0021]
When the hook member 42 is not in contact with the locking pin 41, as shown in FIG. 12A, the starting point of the guide portion 43 is located at a non-lock position where the starting point faces the locking pin 41. In this state, when the slide plate retreats and the locking pin 41 fixed to the slide plate comes into contact with the starting point of the guide portion 43 of the hook member 42, as shown in FIGS. With the retraction of the lock pin 41, the hook member 42 rotates to the retracted position (the position shown in FIG. 3C) against the urging force of the torsion spring 47, and the lock pin 41 is Comes in contact with the end point of. When the locking pin 41 further retreats and the hook member 42 further rotates, the locking pin 41 separates from the guide portion 43 of the hook member 42 as shown in FIGS. When the lock pin 41 separates from the guide portion 43, the torsion spring 47 returns the hook member 42 from the retracted position to the non-lock position, and comes to the lock position (the position (e) in the figure). The locking pin 41 comes into contact with the hook portion 44 of the hook member 42, and the forward movement of the locking pin 41 is restricted. That is, the slide plate provided with the locking pin 41 is urged forward by the urging mechanism, but cannot slide forward from the closed angle position.
[0022]
In order to allow the slide plate to slide forward from this state, the slide plate is slightly retracted, and the locking pin 41 is separated from the hook portion 44 of the hook member 42 as shown in FIG. . When the locking pin 41 separates from the hook portion 42, the hook member 42 is slightly rotated from the locked position to the unlocked position by the torsion spring 47, as shown in FIG. Due to the rotation of the hook member 42, the locking pin 41 is positioned at the release portion 45 of the hook member 42, and the hook of the locking pin 41 by the hook member 42 is released, as shown in FIG. Thus, the slide plate provided with the locking pin 41 slides forward by the urging mechanism.
[0023]
Next, a series of operations for returning the display panel 20 from the closed angle state to the closed angle after passing through the intermediate angle and the open angle will be collectively described.
[0024]
When the display panel 20 is in the closed angle, as shown in FIGS. 2 to 4, the display panel 20 is formed on the front wall 11 with the back surface 24 facing the front wall 11 of the housing 10. The CD entrance 12 and the DVD entrance 13 are closed. The slide plate 32 of the Scott Russell mechanism 31 is located at a closed angle position where it is pushed into the back of the housing 10, and the locking pin 41 fixed to the slide plate 32 is connected to a hook of the push lock mechanism 40. Hooked on member 42. For this reason, the slide plate 32 is urged forward by the urging mechanism 50, but cannot slide forward from this closed angle position. In other words, the display panel 20 is in a state where the angle cannot be changed from the closed angle to the intermediate angle.
[0025]
When changing the angle of the display panel 20 having the closed angle to the intermediate angle, as shown in FIG. 3, the push operation unit 22 formed at the lower front part of the display panel 20 is slightly pushed backward. By this operation, the slide plate 32 of the Scott Russell mechanism 31 is slightly retracted, and the push lock mechanism 40 is moved from the locked state shown in FIG. 12E to the slide plate 32 through the state shown in FIG. The lock pin 41 provided can be released ((g) in the figure). Then, when the pressing operation section 22 is released, the slide plate 32 slides forward by the urging force of the urging mechanism 50, and the restriction of the slide plate 32 by the push lock mechanism 40 is completely released.
[0026]
When the restriction of the slide plate 32 by the push lock mechanism 40 is released and the slide plate 32 starts sliding forward by the urging force of the urging mechanism 50, the slide plate 32 receives resistance from the buffer mechanism 56. As a result, the slide plate 32 slides forward at a certain speed or less.
[0027]
When the slide plate 32 reaches the intermediate angle position, as shown in FIGS. 7 and 11, the engagement of the plate spring 61 attached to the bottom wall 15 of the housing 10 is engaged with the plate spring engagement hole 63 of the slide plate 32. The joint 62 fits and stops at this intermediate angular position. As a result, as shown in FIGS. 5 to 7, the display panel 20 has a display surface 21 at an inclined intermediate angle, and opens the CD entrance 12 formed in the front wall 11 of the housing 10.
[0028]
As described above, when the push operation section 22 formed at the lower front part of the display panel 20 is slightly pressed while the display panel 20 is in the closed angle state, the display panel 20 automatically becomes the intermediate angle. Therefore, the CD 1 that is frequently put in and taken out can be put in and out of the CD reproducing device very easily.
[0029]
When changing the display panel 20 from the intermediate angle to the open angle, the front upper part of the display panel 20 is pushed in the direction of arrow A in FIG. Then, the upper front part of the display panel 20 is lowered downward, and the slide plate 32 slides forward, so that the lower part of the display panel 20 is moved forward, and as shown in FIGS. Open angle. When the display panel 20 is changed from the intermediate angle to the open angle, as described above, the upper front part of the display panel 20 may be pushed in the direction of arrow A in FIG. You may pick up the corner with the pushing operation part 22, and may lift it upward. In this open angle state, the display surface 21 of the display panel 20 is perpendicular to the front wall 11 of the housing 10 to open the CD entrance 12 and the DVD entrance 13. As a result, a CD can be inserted into and taken out of the CD reproducing apparatus, and a DVD 2 storing map information and having an extremely low insertion / exit frequency can be inserted into and out of the DVD reproducing apparatus.
[0030]
When returning from the open angle state to the intermediate angle, the push-in operation unit 22 of the display panel 20 is pushed in the direction of arrow C in FIG. Then, the upper part of the front of the display panel 20 is lifted up about the pin joint position with the slide plate 32, and the display panel 20 is at an intermediate angle.
[0031]
When returning from the intermediate angle state to the closed angle, the push-in operation unit 22 of the display panel 20 is pushed in the direction of arrow B in FIG. Then, while the lower front part of the display panel 20 retreats backward, the upper front part of the display panel 20 is lifted upward, and the display panel 20 is closed. When the display panel 20 is at an intermediate angle, the engaging portion 62 of the leaf spring 61 is fitted into the leaf spring engaging hole 63 of the slide plate 32 of the Scott Russell mechanism 31. Although it is held at the angular position, the holding force of the slide plate 32 by the leaf spring 61 is small as described above. If the slide plate 32 is slid forward or backward, the holding of the slide plate 32 at the intermediate angle position is easily released.
[0032]
When the display panel 20 changes from the intermediate angle to the closed angle, the slide plate 32 of the Scott Russell mechanism 31 retreats from the intermediate angle position to the closed angle position. In this process, the locking pin 41 provided on the slide plate 32 comes into contact with the guide portion 43 of the hook member 42 as shown in FIG. 12A, and as shown in FIGS. After the hook member 42 is rotated to the retracted position, the hook member 42 is separated from the guide portion 43 of the hook member 42 and comes into contact with the hook portion 44 as shown in FIGS. As a result, the forward movement of the locking pin 41 is restricted by the hook member 42. That is, the slide plate 32 provided with the locking pin 41 is urged forward by the urging mechanism 50, but returns to the state where it cannot slide forward from the closed angle position.
[0033]
As described above, in the present embodiment, the electric mechanism for opening and closing the display panel 20 is not provided, so that the manufacturing cost can be suppressed and the space in the housing 10 can be effectively used. . On the other hand, since there is no electric mechanism, although the operability is inferior to that with the electric mechanism, when the display panel 20 is in the closed angle, only pressing the push-in operation part 22 of the display panel 20 causes The biasing mechanism 50 automatically sets the display panel 20 to an intermediate angle, and enables the CD 1 with a high frequency of insertion and removal to be inserted into and out of the CD reproducing apparatus, and enables automation of an area of the display panel 20 with a high frequency of deflection. Therefore, a decrease in operability can be suppressed.
[0034]
【The invention's effect】
According to the present invention, since no electric mechanism is provided for the opening / closing operation of the display panel, the manufacturing cost can be reduced and the space in the housing can be effectively used. On the other hand, since there is no electric mechanism, the operability is inferior to that with the electric mechanism. However, if the lock of the slide member by the lock mechanism is released when the display panel is at the first angle, Since the display panel is automatically changed to the second angle by the biasing member, it is possible to suppress a decrease in operability.
[Brief description of the drawings]
FIG. 1 is a cutaway perspective view of a main part of a display device according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the display device according to the embodiment of the present invention (the display panel is closed).
FIG. 3 is a front view (a display panel is closed) of the display device according to the embodiment of the present invention.
FIG. 4 is a cross-sectional view (a display panel is closed) of a display device according to an embodiment of the present invention.
FIG. 5 is a vertical cross-sectional view (a display panel has an intermediate angle) of a display device according to an embodiment of the present invention.
FIG. 6 is a front view of the display device according to the embodiment of the present invention (the display panel has an intermediate angle).
FIG. 7 is a cross-sectional view (a display panel has an intermediate angle) of a display device according to an embodiment of the present invention.
FIG. 8 is a longitudinal sectional view of the display device according to the embodiment of the present invention (the display panel has an open angle).
FIG. 9 is a front view (a display panel is opened) of the display device according to the embodiment of the present invention.
FIG. 10 is a cross-sectional view (a display panel is opened) of a display device according to an embodiment of the present invention.
FIG. 11 is a cross-sectional view of an intermediate angle holding mechanism in one embodiment according to the present invention.
FIG. 12 is an explanatory diagram showing the operation of the push lock mechanism in one embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... CD, 2 ... DVD, 10 ... Housing, 11 ... Front wall, 12 ... CD entrance, 13 ... DVD entrance, 20 ... Display panel, 30 ... Angle change mechanism, 31 ... Scott Russell mechanism, 32 ... Slide board, 33: Slide plate body, 36: Slide arm, 38: Support arm, 39: Swing arm, 40: Push lock mechanism, 41: Lock pin, 42: Hook member, 50: Urging mechanism, 55: Coil spring, 56: buffer mechanism, 60: intermediate angle holding mechanism, 61: leaf spring.

Claims (5)

A display device comprising: a display panel; and an angle changing mechanism configured to displace the display panel between a first angle and a second angle.
The angle changing mechanism,
A slide member having one end pinned to one part of the display panel, and an arm member having one end pin fixed to another part of the display panel; A Scott Russell mechanism that swings the arm member by sliding to displace the display panel between the first angle and the second angle;
From the position of the slide member when the display panel is at the first angle (hereinafter referred to as a first position), the position of the slide member when the display panel is at the second angle (hereinafter referred to as a second position). To), an urging member for urging the slide member;
A lock mechanism for restraining the slide member at the first position so that the slide member does not slide toward the second position;
With
The lock mechanism restrains the slide member in the process of moving the slide member from the second position to the first position, and slightly slides the slide member from the first position to a direction opposite to the second position. A push lock mechanism that releases the restraint of the slide member when it is
A display device characterized by the above-mentioned. The display device according to claim 1,
A shock absorbing mechanism for reducing a speed of movement of the slide member by the urging member from the first position to the second position;
A display device characterized by the above-mentioned. The display device according to any one of claims 1 and 2,
The Scott Russell mechanism can angularly displace the display panel up to a third angle opposite to the first angle side with respect to the second angle.
A display device characterized by the above-mentioned. The display device according to claim 3,
When the slide member reaches the second position from the first position, it engages with a part of the slide member, holds the slide member at the second position, and slides the slide member with respect to the slide member. A second angle holding means for releasing the holding at the second position when a constant load is applied;
A display device characterized by the above-mentioned. The display device according to any one of claims 3 and 4,
A first playback device that plays back the first storage medium;
A second playback device that plays back a second storage medium that is assumed to be lower in and out frequency than the first storage medium in and out of the first playback device;
A housing for housing the first playback device and the second playback device;
With
An entrance of the first storage medium to the first playback device and an entrance of the second storage medium to the second playback device are formed on one wall surface of the housing,
At the first angle, the display panel closes the entrance of the first storage medium and the entrance of the second storage medium, and at the second angle, the first storage medium is externally inserted into the entrance of the first storage medium. The display panel can be inserted and removed, and the display panel closes the entrance of the second storage medium, and at the third angle, the display panel opens the entrance of the first storage medium and the entrance of the second storage medium. A first storage medium and the second storage medium can be taken in and out;
A display device characterized by the above-mentioned.

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