JPH06339091A - Light shielding hood - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A folding type light-shielding hood to be mounted on a portable image display device such as a liquid crystal television can be easily opened and closed with one finger. [Structure] In a folding type light-shielding hood 10 in which covers 21, 31, 41 are openably and closably attached to at least adjacent side portions of a frame 11, a cover 2 is provided.
A spring for urging 1, 31, 41 in the opening direction is provided, and locking portions 15, 25 for holding one cover 21 on the front side in the folded state on the frame 11 side are provided. Then, the cover 21 in the locked state by the locking portions 15 and 25.
An unlocking portion is provided for releasing the locked state by the locking portions 15 and 25 by pushing in on. Further, the guide portions 28, 29, 38, 48 with inclined surfaces that rotate the other covers 31, 41 in the closing direction in conjunction with the closing operation of the one cover 21 on the front side in the folded state. To provide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding type light-shielding hood mounted on a portable image display device such as a liquid crystal television.

[0002]

2. Description of the Related Art In recent years, a liquid crystal television using a liquid crystal as a display device has been put into practical use, and since the liquid crystal is small and lightweight and has low power consumption, it is suitable for carrying. In a portable liquid crystal television, a light shielding hood is attached to shield the liquid crystal screen, and there is also a folding light shielding hood. As a conventional folding type light-shielding hood, the left and right inner covers in the folded state are biased toward the frame by springs in the opening direction, and the upper cover on the outer side in the folded state is closed by the spring. There is a configuration that each is energized. When using this light-shielding hood, hook the upper cover with your finger and pull it toward you to unlock the frame, and open it to some extent (about half when it is fully opened). Open by the bias of. Also,
When closing, fold the left and right covers by hand and the upper hood will close due to the spring force.

[0003]

As described above, the conventional folding type light-shielding hood has a structure in which the upper cover, which is the outer side in the folded state, is biased in the closing direction by the spring. There was the trouble of opening the upper cover by hooking it with your fingers, and the trouble of folding the left and right covers when closing it, which was troublesome to use. In addition, there is a drawback that when closing, the hands are caught in the front cover which is closed by the force of the spring.

Therefore, an object of the present invention is to provide a folding type light-shielding hood to be mounted on a portable image display device such as a liquid crystal television, which can be opened and closed easily with one finger. To do.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is a folding type light-shielding hood in which a cover is openably and closably attached to at least adjacent side portions of a frame. A spring for urging the cover in the opening direction is provided, and a locking portion for holding one cover, which is the front side in the folded state, on the frame side is provided, and the locking portion pushes the cover into the locked state. A lock release portion for releasing the locked state by the lock portion by an operation is provided. For example, the engaging portion includes a hook provided on the frame side and a hook provided on the cover side so as to engage with the hook. Further, the locking release portion includes a protrusion provided on the cover side so as to move the cover side hook in a direction away from the frame side hook by engagement with the frame side hook. , Engaging with each other on the frame side and the cover side so as to hold the hook on the cover side at a position separated from the hook on the frame side by engagement of the protrusion with the hook on the frame side. It consists of a flexible position control unit.

According to a third aspect of the present invention, in a folding type light-shielding hood in which a cover is openably and closably attached to at least adjacent side portions of a frame, a spring for urging the cover in the opening direction. And a locking portion for holding one cover on the front side in the folded state on the frame side, and interlocking with a rotation operation in the closing direction for the one cover on the front side in the folded state. A guide portion with an inclined surface for rotating the other cover in the closing direction is provided.

[0007]

According to the first aspect of the present invention, when one cover on the front side is pushed with a finger in the folded state held by the locking portion, the locked state by the locking portion is released,
When you release your finger, all the covers will open due to the force of each spring. According to the configuration of claim 2, when the front cover is pushed in with the fingers in the folded state, the cover side projection is engaged with the frame side hook, and the cover side hook is separated from the frame side hook. While the hooks move in the direction of separating, the state in which the hooks are separated from each other is held by the engagement between the position regulating portion on the frame side and the position regulating portion on the cover side. Therefore, the engagement between the frame side hook and the cover side hook is released, and when the finger is released, the cover opens.

According to the third aspect of the present invention, when all the covers are opened, if one cover which is on the front side in the folded state is continuously pushed so as to be folded with a finger, the guide portion with the inclined surface is engaged. By this, the other cover is folded in conjunction with each other, and is held in the folded state by the locking portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the light shielding hood according to the present invention will be described below with reference to FIGS. First, FIGS. 1 to 4 show the structure of a light-shielding hood 10 as an example to which the present invention is applied.
The upper cover 21, the right cover 31, and the left cover 41 are made of synthetic resin. The frame 11 has, for example, a substantially quadrangular shape that is fitted and mounted around a front portion having a liquid crystal screen of the portable liquid crystal television 1 as shown in FIG. 5, and a screen window 12 is opened inward. The rear surface is provided with mounting pieces 13, 13, 13, ... Surrounding the liquid crystal television 1. Further, this frame 11 has finger guide recesses 14 formed on its lower side, and hooks 15, 15 for covering the cover are formed on both left and right sides as shown in an enlarged view in FIG. Become.

The upper cover 21 has a substantially rectangular shape that entirely covers the inside of the frame 11, and pivot pins 22, 2 are attached to both left and right side portions along the upper side portion of the frame 11.
2 and has slits 23,
It has locking pieces 24, 24 that are cut out by 23. Then, hooks 25, 25 for holding the folded state are formed on the locking pieces 24, 24 (see also FIG. 6). The upper cover 21 is openably and closably attached to the left and right upper portions of the frame 11 by the pivot pins 22 and 22, and between the upper cover 21 and the center of the upper side of the frame 11 is indicated by an arrow U in FIG. So that this top cover 21
Is provided with a torsion coil spring 52 for biasing in the opening direction.

The right cover 31 is a screen window 1 of the frame 11.
2 has a substantially triangular shape having an upper side portion that covers approximately half of 2, a side portion, and an inclined side portion, and upper and lower pivot pins 32 and 33 that are assembled along the right side portion of the frame 11 on the side portion.
(See FIG. 11). The right cover 31 is openably and closably attached to the right side portion of the frame 11 by the pivot pins 32 and 33, and the space between the right cover 31 and the right side portion of the frame 11 is indicated by an arrow R in FIG. As described above, the torsion coil spring 53 for urging the right cover 31 in the opening direction is installed around the upper pivot pin 32.

The left cover 41 has a symmetrical shape with the right cover 31, that is, the upper and lower pivot pins 42, which are assembled along the left side portion of the frame 11, are attached to the side portions.
43 (not shown). As in the case of the right cover 31, the left cover 41 is attached to the pivot pins 42,
43 is attached to the left side portion of the frame 11 so as to be openable and closable, and the left cover 41 is opened between the left cover 41 and the left side portion of the frame 11 in the opening direction as indicated by an arrow L in FIG. A biasing torsion coil spring 54 is mounted around the upper pivot pin 42.

In the above, the hook 1 on the frame 11 side
5 and the hook 25 on the side of the upper cover 21
With 1 as the front side, a locking portion for holding the right cover 31 and the left cover 41 in a folded state is formed inside thereof. Then, in the folded state, the operation portion 21a (the hatched area in FIG. 1A) along the finger guiding concave portion 14 on the lower side of the front side upper cover 21 is pushed with a fingertip, so that the hooks 15, 25 An unlocking portion that unlocks the locked state is provided.

That is, as shown in FIGS. 6 to 8, the engaging piece 24 on the side of the upper cover 21 is formed with a protrusion 26 on the outer side surface above the hook 25 and in the direction perpendicular to the hook 25. The protruding piece 27 is formed. The protruding piece 27 has an inclined surface 27a on the side opposite to the protruding portion 26. Further, on the frame 11 side, as shown in FIG. 6, a hole portion 16 into which the locking piece 24 can enter is formed, and
As shown in FIG. 8, an inverted L-shaped restricting piece 17 corresponding to the protruding piece 27 is provided in a protruding manner. The restricting piece 17 has an inclined surface 17 on the side of the protruding portion facing the inclined surface 27 a of the protruding piece 27.
a.

As described above, the restriction piece 17 on the frame 11 side
And the protruding piece 27 on the side of the upper cover 21 constitute a position restricting portion. The position restricting portion and the protruding portion 2 on the side of the upper cover 21.
6 and 6 form an unlocking portion. Further, the torsion coil springs 52, 53, 5 that bias the opening direction.
In the fully opened state of each cover 21, 31, 41 according to No. 4, the operation portion 21a of the upper cover 21 is continuously pressed and folded by a finger tip to fold the right cover 31 and the left cover 41 together so as to fold together. Is provided.

That is, first, as shown in FIG. 9, left and right symmetrical ribs 28 and 29 which are arcuate in plan view are formed on the back surface of the upper cover 21. These ribs 28 and 29 have arc-shaped centers in the vicinity of the pivot pins 22 and 22,
The ribs 28a, 28b, 2 divided at their intersections
It consists of 9a and 29b. And these ribs 28, 29
As shown in FIG. 10, from the ribs 28a, 29a side toward the ribs 28b, 29b side (arrow G, FIG. 9C).
(Refer to the H direction) It is formed to be low. Further, the ribs 28, 29 are formed with inclined surfaces 28c, 29c on the sides facing the pivot pins 22, 22, respectively. (See Figure 13).

Further, as shown in FIGS. 11 and 12,
A protrusion 38 corresponding to the rib 28 is formed on the upper side of the right cover 31. Then, the outside of the protrusion 38 is provided with an inclined surface 38 corresponding to the inclined surface 28c of the rib 28.
a. Similarly, on the upper side of the left cover 31,
The protrusion 48 corresponding to the rib 29 is formed, and the outside of the protrusion 48 is formed as an inclined surface 48a corresponding to the inclined surface 29c of the rib 29. (Not shown).

In this way, the ribs 28 on the upper cover 21 side,
29, the protrusion 38 and the left cover 41 on the right cover 31 side
The side protrusion 48 constitutes a guide portion with an inclined surface for folding in a one-touch type. The inclined surface 28
c and the inclined surface 38a and the inclined surface 29c and the inclined surface 48a may be brought into direct contact with each other, however, FIG. 13 shows an example in which a roller 61 is provided to reduce the frictional force. 61 is the inclined surface 38 on the cover 31 (41) side
It shall be attached to c (48c).

In the light-shielding hood 10 having the above structure, the right cover 31 and the left cover 41 are folded against the frame 11 against the biasing forces of the torsion coil springs 53 and 54, and the upper cover 21 is provided on the front side thereof. Is folded against the biasing force of the torsion coil spring 52, and at the same time, the left and right hooks 25, 25 on the upper cover 21 side are
The hooks 15 and 15 on the frame 11 side are engaged with each other to be held in a folded state. Then, the light shielding hood 10 is attached to the liquid crystal television 1 by fitting the frame 11 with the attachment pieces 13, 13, 13, ... About the periphery of the liquid crystal television 1.

When using the above shading hood 10,
As shown by the hatched area in FIG. 1A, when the operation portion 21a at the lower side of the front side upper cover 21 is pushed in with a fingertip, as shown in FIGS.
The hook 25 on the side of the upper cover 21 is separated from the hook 15 on the side of 1 to the back, and the hook 15 on the side of the frame 11 is attached to the hook 15 on the side of the upper cover 2.
Ride on the protrusion 26 on the first side. At the same time, as shown in FIGS. 7A and 7B, the inclined surface 27a of the protruding piece 27 on the upper cover 21 side is the inclined surface 17 of the regulating piece 17 on the frame 11 side.
7a is pushed in the direction of the arrow, and thereby the restriction piece 17 is pushed and elastically deformed, and as shown in FIG.
When the restriction piece 17 returns in the direction of the arrow after overcoming the above, the projecting piece 27 contacts the side surface opposite to the inclined surface 17a.

When the finger pushing the operating portion 21a of the upper cover 21 is released, the protruding piece 27 on the upper cover 21 side is released.
Is abutted against the inclined surface 17a of the restriction piece 17 on the side of the frame 11 and the position thereof is restricted, so that the force of the torsion coil spring 52 causes the upper cover 21 side as shown in FIG. 6C. Of the hook 25 on the frame 11 side has passed over the hook 15 of the frame 11, and the upper cover 21 has the pivot pin 2
Open around by turning around 2,22. Further, since the right cover 31 and the left cover 41 are only pushed into the upper cover 21, the upper cover 21 is opened, and at the same time, the respective twisted coil springs 53, 54 force the respective pivoting pins 32, 33, 42. , Open around 43.

As described above, the three covers 2 constituting the light-shielding hood 10 are formed by a simple one-touch operation of pushing the upper cover 21 on the front side in the folded state with a fingertip.
1, 31, 41 can be fully opened. In this fully opened state, the ribs 28, 2 of the upper cover 21 are
The inclined surfaces 28c and 29c of 9 are engaged with the inclined surfaces 38c and 48c of the protrusions 38 and 48 of the right cover 31 and the left cover 41 (in the example of FIG. 13, the roller 61 is interposed). In addition, an appropriate stopper is provided.

Next, in the case of folding, if the operating portion 21a of the upper cover 21 is continuously pushed downward with a fingertip, as shown in FIG.
As shown in (c), the inclined surfaces 3 of the protrusions 38 and 48 are different from the inclined surfaces 28c and 29c of the ribs 28 and 29 on the rear surface thereof.
The right cover 31 and the left cover 4 in which 8c and 48c are engaged (in the example of FIG. 13, the roller 61 is interposed)
1 is interlocked and folded as shown by the arrow in FIG. That is, the ribs 2 on the back surface of the upper cover 21 that are symmetrical to each other
Reference numerals 8 and 29 are arc-shaped ones in a plan view (see FIG. 9) whose arc centers are in the vicinity of the pivot pins 22 and 22, and the ribs 28a and 29a are divided from the ribs 28a and 29a.
It has slopes 28c and 29c that are lower toward the b and 29b sides (see FIG. 10) and that face the pivot pins 22 and 22 respectively (see FIG. 13).

Therefore, the right cover 31 and the right cover 31 having the projections 38 and 48 engaged with the inclined surfaces 28c and 29c by the respective inclined surfaces 38c and 48c (in the example of FIG. 13, the roller 61 is provided). As shown by the arrow in FIG. 13, the left cover 41 is interlocked with a push-down operation of rotating around the pivot pins 22, 22 of the upper cover 21, and the inclined surfaces 28c, 2
9c and the inclined surfaces 38c, 48c are rotated around the respective pivot pins 32, 33, 42, 43 by the transmission of the force by the engagement accompanied by the sliding (rolling of the roller 61 in the example of FIG. 13). It moves and is folded. Such a folding operation is
It is performed against the force of the torsion coil springs 52, 53, 54, and further, the inclined surfaces 28c, 29c and the inclined surface 38 are formed.
It is performed with an operating force that exceeds the force of the frictional force with c and 48c. Then, the left and right hooks 2 on the side of the upper cover 21
The folded state is maintained by engaging the hooks 5 and 25 with the hooks 15 and 15 on the frame 11 side, respectively.

As described above, the three covers 21, 31, 41 constituting the light-shielding hood 10 can be fully closed by a simple one-touch operation of simply pushing the upper cover 21 downward with a fingertip. Although FIG. 2B shows an example in which the left cover 41 and the right cover 31 are folded in this order, they may be folded in the reverse order, and in either case, the right cover 31 and The guide portion with the inclined surface is configured so that one of the left covers 41 is folded first.

By the way, in the embodiment, the cover on the front side in the folded state is the upper cover 21, but either the right cover 31 or the left cover 41 may be used, and a lower cover may be provided. Further, the pushing operation position of the cover and the presence or absence of the mark are arbitrary. further,
The positions and configurations of the locking portion and the unlocking portion thereof, and the configuration of the guide portion with the inclined surface may be appropriately changed as long as the same functions as those in the embodiment can be obtained.

Although the light-shielding hood for the liquid crystal television is used in the above embodiments, the present invention is not limited to this, and a light-shielding hood mounted on another portable image display device may be used. Good. Further, the material and design of the light-shielding hood, the number of covers and their positions, etc. are arbitrary, and it is needless to say that the specific detailed structure and the like can be appropriately changed.

[0028]

As described above, according to the light-shielding hood of the present invention, all the covers can be opened and closed easily with one finger, and the operability can be improved.
That is, according to the light-shielding hood of claim 1, in the folded state, one cover on the front side is pushed with a finger and then released to release the locked state by the locking portion, and all the covers are separated from each other. It can be opened by the force of the spring.

According to the second aspect of the invention, by pushing the front cover with the fingers in the folded state,
The protrusion on the cover side engages with the hook on the frame side to move the cover side hook in the direction away from the frame side hook. It can be held by the engagement of the restriction portion and the position restriction portion on the cover side. Therefore, the cover can be automatically opened by releasing the pushed finger.

Further, according to the light-shielding hood of claim 3, in the state where all the covers are opened, the one cover on the front side in the folded state is continuously pushed so as to be folded with a finger, so that the guide with the inclined surface is provided. By engaging the parts, other covers can be interlocked and folded, and subsequently,
It can be held in the folded state by the locking portion.

[Brief description of drawings]

1A and 1B show a folded state of a light shielding hood as an example to which the present invention is applied, FIG. 1A is a front view, FIG. 1B is a side view, and FIG. 1C is a bottom view.

2A is a sectional view taken along the line AA of FIG. 1A, and FIG. 2B is a sectional view taken along the line BB of FIG. 1A.

FIG. 3 is a front view of the shading hood to which the present invention has been applied, with the upper cover removed.

FIG. 4 is a front view of the same fully opened state.

FIG. 5 is a partially cutaway side view showing an example of use in which a light-shielding hood is also attached to a portable liquid crystal television.

FIG. 6 is an enlarged view of an arrow C portion of FIG. 2B, in which (a) is a hook locked state, (b) is a unlocked state by pushing, and (c) is an opened state by pushing release. It is a figure of the state just before.

7A is a sectional view taken along the line DD of FIG. 6A, FIG. 7B is a sectional view taken along the line EE of FIG. 6B, and FIG. It is sectional drawing which followed the arrow FF line of FIG.6 (c).

FIG. 8 is an enlarged perspective view of a position restricting portion.

9A and 9B are single-part views of the upper cover, FIG. 9A is a plan view seen from the upper surface side, FIG. 9B is a side view, and FIG. 9C is a bottom view seen from the lower surface side.

10 is a cross-sectional view taken along the line JJ of FIG. 9 (a).

FIG. 11 is a single-part view of the right cover, where (a) is a front view seen from the outside, (b) is a side view, and (c) is a back view seen from the inside.

FIG. 12 is an enlarged cross-sectional view taken along the line KK of FIG. 11 (a).

FIG. 13 is an enlarged vertical sectional view showing an engaged state of the guide portion with the inclined surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LCD television 10 Light-shielding hood 11 Frame 12 Screen window 15 Hook 16 Hole 17 Restriction piece 17a Inclined surface 21 Upper cover 22 Pivoting pin 24 Locking piece 25 Hook 26 Projection 27 Projection piece 27a Inclined surface 28, 29 Rib 28c, 29c Inclined surface 31 Right cover 32,33 Pivoting pin 38 Projection part 38c Inclined surface 41 Left cover 42,43 Pivoting pin 48 Projection part 48c Inclined surface 52,53,54 Spring 61 Roller

Claims (3)

[Claims] 1. A folding type light-shielding hood in which a cover is openably and closably attached to at least a side portion adjacent to a frame, and springs for urging the cover in the opening direction are provided, and the cover is provided on the front side in a folded state. And a lock releasing portion for releasing the locked state by the locking portion by pushing the cover in the locked state by the locking portion. A light-shielding hood characterized by that. 2. The locking portion includes a hook provided on the frame side and a hook provided on the cover side so as to lock with the hook, and the locking release portion is provided on the frame side. A protrusion provided on the cover side so as to move the hook on the cover side in a direction away from the hook on the frame side by engagement with the hook; and the protrusion and the hook on the frame side. It is characterized by comprising mutually engageable position restricting portions respectively provided on the frame side and the cover side so as to hold the hook on the cover side at a position separated from the hook on the frame side by engagement. The shading hood according to claim 1. 3. A folding type light-shielding hood in which a cover is openably and closably attached to at least a side portion adjacent to a frame, and springs for biasing the cover in the opening direction are provided, and the cover is provided on the front side in a folded state. A locking portion for holding one cover on the frame side is provided, and the other cover is rotated in the closing direction in conjunction with the turning operation of the one cover on the front side in the folded state in the closing direction. A light-shielding hood, which is provided with a guide portion with an inclined surface for moving.