JP3194920B1 - Optical filter for display device - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide an optical filter for a display device which does not require a conventional rectangular frame, does not require a large mold, and can reduce manufacturing cost. An optical filter for a display device includes a filter main body having an outer shape corresponding to a display screen of a display device to be mounted, an upper cover attached to an upper end of the filter main body, and a lower end of the filter main body. A lower cover 30 attached to the filter body; and a horizontal cover 40 disposed at both side ends of the filter body 10. Side cover 4
0 has a vertical member 41 and a horizontal member 42 protruding from the upper and lower ends of the vertical member 41 toward the filter body 10, respectively, so that the horizontal member 42 is slidable on both ends of the upper cover 20 and the lower cover 30. The filter body 10 is attached by the upper cover 20, the lower cover 30, and the two side covers 40.
Is configured to surround the periphery of the frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood type optical filter for a display device provided with a cover around a filter main body, and more particularly, to slide the horizontal cover in the horizontal direction according to the horizontal size of the display device. The present invention relates to a movable optical filter for a display device.

[0002]

2. Description of the Related Art Conventionally, display devices such as computers and various video equipment have been equipped with CRTs, liquid crystals, optical fibers, and LEs.
Those employing D or the like are widely used. Various configurations of optical filters for display devices to be mounted on these display devices are employed.

[0003] These optical filters for display devices are of a plate type which covers a display screen on the front of the display device, and a filter body is mounted on a relatively shallow square dish-like frame to display the filter body. It can be broadly classified into a hood type device that covers a gap between the device and the display screen.

[0004] Among them, the hood type has an advantage that dust and the like do not enter from between the display device and the filter body, and external light directly enters between the display device and the filter body. This has the advantage that the contrast can be improved.

Further, since the appearance of the hood type filter can be made similar to the display screen of the display device,
There is an advantage that there is almost no discomfort even when worn.

However, since the hood type filter is formed by mounting the filter main body on a relatively shallow square dish-shaped frame, a good mounting state is required for the display device selected as the mounting target. Although it can be achieved, if the dimensions of the display screen are different, there is a drawback that a gap is formed between the display device and the filter, causing a sense of incongruity.

[0007] In order to eliminate such inconvenience,
It is necessary to prepare a plurality of types of filters having dedicated sizes corresponding to the dimensions of various types of display devices.

Conventionally, as a solution to such a disadvantage, Japanese Patent Laid-Open Publication No. 2806040 discloses that a plurality of types of display devices having different dimensions can be used without limiting the types of display devices to be mounted. 2. Description of the Related Art An optical filter for a display device that can be worn without discomfort has been proposed.

This optical filter is, as shown in FIG.
A frame body surrounding the periphery of the filter body 55 has an outer shape corresponding to the outer shape of the main body of the display device, and is provided on the left and right sides of the frame body 56 that holds the filter body 55. On the other hand, the side frame 57 is connected so that the relative position in the horizontal direction can be adjusted. The outer shape and size of the display device to be mounted by using such a filter. By adjusting the relative position of the side frame 57 in the horizontal direction in accordance with the condition, the filter can be mounted on the main body of the display device without a sense of incongruity.

However, in order to manufacture such a filter, a large-sized mold is required to manufacture the rectangular frame-shaped frame main body 56, which increases the manufacturing cost.
There was room for further improvement.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned situation, and an object thereof is to eliminate the necessity of a conventional rectangular frame-shaped frame main body. An object of the present invention is to provide an optical filter for a display device, which does not require a mold and can reduce manufacturing cost.

[0012]

An optical filter for a display device according to the present invention comprises: a filter main body having an outer shape corresponding to a display screen of a display device to be mounted; an upper cover attached to an upper end of the filter main body; An optical filter for a display device, comprising: a lower cover attached to a lower end portion of the filter main body; and a horizontal cover disposed at both end portions of the filter main body, wherein the horizontal cover includes a vertical member and the vertical member. A horizontal member protruding toward the filter body side from both upper and lower ends of the upper cover and the lower cover, and the horizontal member is slidably attached to both ends of the upper cover and the lower cover. The cover forms a frame surrounding the periphery of the filter body, thereby achieving the above object.

In one embodiment, the upper cover is attached to the filter body by engaging an engagement projection provided on the upper cover with an engagement hole provided at an upper end portion of the filter body. The lower cover is attached to the filter main body by engaging an engagement projection provided on the lower cover with an engagement hole provided at a lower end of the filter body.

In one embodiment, a slide hole is provided in a horizontal member of the horizontal cover, and projections provided at both ends of the upper and lower covers are inserted into the slide hole.

In one embodiment, the vertical member of the horizontal cover has an L-shaped cross section, the upper cover has an L-shaped cross section, and the upper and lower sides of the display screen of the display device are formed by the horizontal cover and the upper cover. It is configured to cover the part.

In one embodiment, a recess is provided at a central portion in the longitudinal direction of the upper cover, and a holder fixed to the upper surface of the display device is detachably attached to the recess.

The operation of the present invention is as follows.

The horizontal covers are disposed at both ends of the filter body, and the horizontal members of the horizontal cover are slidably attached to both ends of the upper cover and the lower cover attached to the upper and lower ends of the filter body. By forming a frame surrounding the periphery of the filter body by the cover and both lateral covers, according to the horizontal size of the display screen of the display device,
The size of the filter in the horizontal direction can be adjusted by sliding the horizontal cover in the horizontal direction (horizontal direction). Also,
Since the upper and lower covers and the horizontal cover can be constituted by substantially long members, there is no need for a mold for molding a rectangular frame-shaped member as in the related art.

According to a second aspect of the present invention, an engagement hole is provided at the upper and lower ends of the filter main body, and the engagement projections formed on the upper cover and the lower cover are engaged with the engagement holes. By allowing the upper and lower covers to be attached to the main body, the upper and lower covers can be attached to the filter main body with a simple configuration.

According to a third aspect of the present invention, a slide hole is provided in the horizontal member of the horizontal cover, and projections provided at both ends of the upper and lower covers are inserted into the slide hole, thereby achieving a simple configuration. The horizontal cover can be attached to the upper and lower covers slidably in the horizontal direction. This projection may be shared with the engagement projection.

According to a fourth aspect of the present invention, the vertical member of the horizontal cover has an L-shaped cross section, the upper cover has an L-shaped cross section, and the upper portion of the display screen of the display device is formed by the horizontal cover and the upper cover. By being configured to cover both side portions, the space between the filter body and the display screen of the display device can be reliably covered with the upper cover and the lateral cover.

According to a fifth aspect of the present invention, a holder fixed to the upper surface of the display device is removably attached to a recess provided at a central portion in the longitudinal direction of the upper cover.
The filter of the main body can be attached to the upper surface of the display device with a simple configuration.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

As shown in FIGS. 1 to 5, an optical filter 1 for a display device according to the present invention has a filter main body 10 having an outer shape corresponding to a display screen of a display device to be mounted, and an upper end portion of the filter main body 10. Upper cover 20 attached to
And a lower cover 30 attached to the lower end of the filter main body 10, and lateral covers 40, 40 arranged on both side ends of the filter main body 10.

The filter main body 10 is usually formed in a horizontally long rectangular shape from a synthetic resin molded product or glass. Engagement holes 11 are provided at the upper end and the lower end of the filter body 10, respectively.
Are provided.

The upper cover 20 is a synthetic resin molded product.
The length of the filter body 10 is substantially the same as the length in the lateral direction. The upper cover 20 has a substantially L-shaped cross section, and has an upper front piece 21 and an upper horizontal piece 22, and is inserted into the engagement hole 11 of the filter body 10 on a rear side surface of the upper front piece 21. An engagement projection 23 that can be engaged with the projection is provided. As shown in FIG.
The filter body 10 has a projecting portion 24 and an engaging portion 25 protruding from the rear surface of the upper cover 20. A protruding piece 26 protrudes from the upper horizontal piece 22 of the upper cover 20, and the protruding piece 26
The upper end of the filter body 10 is sandwiched between the filter body 10 and the back surface of the upper cover 20.

At a substantially central portion in the longitudinal direction of the upper cover 20, a notch 27 is formed in the upper horizontal piece 22, and the holder 5 is detachably attached to the notch 27. More specifically, a locking projection 28 is provided at an end of the upper horizontal piece 22 on the side of the notch 27, and a locking recess 6 formed at an end of the holder 5 disposed in the notch 27. The locking projection 2
8 is rotatably mounted. The holder 5 is fixed to the upper surface of the main body of the display device using a fixing tool such as a double-sided adhesive tape, and the optical filter 1 is suspended via the holder 5.

The lower cover 30 is a synthetic resin molded product.
The length of the filter body 10 is substantially the same as the length in the lateral direction. The lower cover 30 has a plate-like shape, and an engagement hole 1 of the filter body 10 is provided on a rear side surface of the lower cover 30.
An engagement protrusion 33 that can be inserted into and engaged with the first projection 1 is provided. As shown in FIG. 7, the engaging projection 33 has a projecting portion and an engaging portion projecting from the back surface of the lower cover 30 as in the case of the upper cover 20 described above. The filter body 10 is engaged with the back surface of the cover 30. A projecting piece 36 protrudes from the lower end of the lower cover 30, and the lower end of the filter body 10 is sandwiched between the projecting piece 36 and the back surface of the lower cover 30.

The horizontal cover 40 has a long vertical member 41 along the horizontal edge of the filter body 10 and a horizontal member 42 protruding from the upper and lower ends of the vertical member 41 toward the filter body 10.
And The vertical member 41 is formed in an L-shaped cross section, and has a horizontal front piece 43 and a horizontal back piece 44.

The horizontal member 42 of the horizontal cover 40 is provided with a horizontally extending slide hole 45. Then, the engaging projections 23, provided on both ends of the upper and lower covers 20, 30,
33 is slidably inserted in the slide hole 45 in the horizontal direction. That is, the horizontal cover 40 can be slid in the horizontal direction with respect to the filter main body 10, and can be adjusted to an arbitrary position according to the horizontal size of the display device main body.

The horizontal member 42 of the horizontal cover 40 is
Elastic pieces (not shown) projecting toward the upper and lower covers 20 and 30 on the horizontal cover 40 to fix them at predetermined positions of 0 and 30.
Are provided by, for example, cutting and raising, and a plurality of concave / convex portions (not shown) are provided on the back surfaces of the upper and lower covers 20 and 30 in the longitudinal direction (sliding direction). You may make it match.

In this manner, the upper and lower front pieces 21 and 31 of the upper and lower covers 20 and 30 are disposed on the front side of the upper and lower ends of the filter body 10, and the horizontal front piece 43 of the horizontal cover 40 is provided.
The filter is also arranged on the front side on both sides of the filter main body 10, and the upper cover 20, the lower cover 30, and the two lateral covers 40 cover the front surface around the filter main body 10 in a frame shape (FIG. 3).

Next, the horizontal cover 40 is connected to the upper and lower covers 2.
The mechanism for sliding horizontally with respect to 0 and 30 will be described in more detail.

As shown in FIGS. 4, 5 and 7, a ridge portion 29 is provided on the lower edge of the upper front piece 21 of the upper cover 20 so as to protrude toward the rear surface in the longitudinal direction. However, the upper front piece 2
The ridge portions are not provided at both end portions of 1 and are flat portions. The horizontal cover 4 is positioned between the back surface of the upper front piece 21 and the base of the ridge 29 and the upper horizontal piece 22.
A concave space portion 50 for arranging the zero horizontal member 42 is formed.

A ridge 49 is also provided inside the vertical member 41 and the horizontal member 42 of the horizontal cover 40. When the horizontal member 42 is disposed in the space 50, the ridge portion 49 of the horizontal cover 40 is slightly lower than the ridge portions 29 and 39 of the upper and lower covers 20 and 30. The periphery of the filter body 10 rides on the parts 29 and 39, and the engagement protrusions 23 and 33 and the protrusion 2
The end of the filter main body 10 is pressed by 6 and 36, and the horizontal member 42 of the horizontal cover 40 is inserted and arranged in a space formed between the filter main body 10 and the upper and lower covers 20 and 30. In the drawing, reference numeral 46 denotes an upper piece of the horizontal cover 40.

The optical filter 1 for a display device of the present invention configured as described above is attached to the display device as follows.

When the holder 5 is fixed to the upper end surface of the display device with an adhesive tape or the like, the filter 1 is hung by the holder 5 and arranged on the front surface of the display device. At this time, the upper horizontal piece 22 of the upper cover 20 is disposed on the upper surface of the main body of the display device. The lateral cover 40 is slid in accordance with the size of the main body of the display device in the horizontal direction, so that the lateral back piece 44 of the horizontal cover 40 is arranged on the lateral side surface of the main body of the display device. By doing so, the display screen of the display device has the upper cover 20 and the horizontal cover 40 having a predetermined depth.
It will be covered with.

FIG. 6 shows another embodiment of the present invention.

As shown in FIG. 6, an engaging recess 12 is formed at an appropriate position on the edge of the filter body 10, and the upper and lower covers 20,
The upper and lower covers 20 and 30 may be attached to the filter body 10 by engaging engagement pieces (not shown) protruding toward the filter body 10 with the engagement recesses 12. Although the left and right engagement recesses 12 of the filter main body 10 are different in the drawing, the engagement recesses 12 of the same form on the left and right are provided.
May be formed. By doing so, the filter body 1
There is no need to provide the engagement hole 11 in the “0”. Further, the upper and lower covers 20,
30 may be fixed.

As described above, in the conventional filter, the right and left slide side walls are set on the front frame, and a total of nine mounting parts for fixing the filter and a holder for fixing the entire filter to the display device are provided. However, in the present invention, several holes for fitting are formed in the filter main body 10 and the filter main body 10 itself is positioned as a main member of the skeleton, so that the front frame, which is a conventional main part, can be formed. Divided into upper and lower separate parts, not a frame,
By adding the function of the attachment to the upper and lower covers, the conventional attachment becomes unnecessary. As a result, after the front frame is divided, the upper cover 20, the lower cover 30, the left and right lateral covers 40, and the filter body 10 and 6 parts of the holder 5, and the number of parts can be greatly reduced.

[0041]

According to the present invention, the left and right lateral covers slide in the horizontal direction, so that the right and left covers can be just fitted to display devices of various companies. Accordingly, dust is less likely to adhere to the display screen, and since light does not enter from the side, the contrast is improved. In addition to this, the conventional rectangular frame body is divided into two small parts, so that the metal mold is formed. Costs and molding costs are reduced, and by combining the fixtures and functions, the number of parts is reduced, and the mold and molding to produce these parts become unnecessary, reducing the number of parts and reducing the number of assembly steps. Also leads.

Therefore, according to the present invention, mold development costs,
It also extends the molding unit price, assembly cost, and development schedule, and can be said to be an innovative optical filter for display devices that can greatly reduce the overall development risk.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of an optical filter for a display device according to the present invention, as viewed from the back side.

FIG. 2 is a perspective view of the assembled state of the filter shown in FIG. 1 as viewed from the back surface side.

FIG. 3 is a perspective view from the front side of an assembled state of the filter shown in FIG. 1;

FIG. 4 is a perspective view of a main part of the filter shown in FIG.

FIG. 5 is a perspective view of a main part of the filter shown in FIG.

FIG. 6 is a perspective view of a filter main body of another embodiment of the optical filter for a display device of the present invention.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 2;

FIG. 8 is a perspective view of a conventional optical filter for a display device.

[Description of Signs] 1 Optical filter for display device 5 Holder 10 Filter body 20 Upper cover 30 Lower cover 40 Horizontal cover

Claims (5)

(57) [Claims] A filter body having an outer shape corresponding to a display screen of a display device to be mounted; an upper cover attached to an upper end of the filter body; a lower cover attached to a lower end of the filter body; An optical filter for a display device, comprising: a horizontal cover disposed on both side ends of a filter main body; wherein the horizontal cover protrudes toward the filter main body from a vertical member and upper and lower ends of the vertical member. The horizontal member is slidably attached to both ends of the upper cover and the lower cover, and the upper cover, the lower cover, and both the horizontal covers form a frame surrounding the periphery of the filter body. Optical filters for display devices. 2. An upper cover is attached to the filter main body by engaging an engaging projection provided on the upper cover with an engaging hole provided at an upper end of the filter main body. The optical filter for a display device according to claim 1, wherein the lower cover is attached to the filter body by engaging an engagement protrusion protruding from the lower cover with the provided engagement hole. 3. The optical filter for a display device according to claim 1, wherein a slide hole is provided in a horizontal member of the horizontal cover, and projections provided at both ends of the upper and lower covers are inserted into the slide holes. . 4. A vertical member of the horizontal cover is formed in an L-shaped cross section, and the upper cover is formed in an L-shaped cross section, so that the horizontal cover and the upper cover cover an upper portion and both side portions of a display screen of a display device. The optical filter for a display device according to claim 1, wherein: 5. A concave portion is provided at a central portion in a longitudinal direction of the upper cover, and a holder fixed to an upper surface of the display device is detachably attached to the concave portion.
5. The optical filter for a display device according to any one of 4.