JPH0574966U - Sunshade cover for display device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to arbitrarily adjust the length of the awning cover that prevents the screen of a display device, such as a vehicle-mounted device, from becoming difficult to see due to the influence of external light. [Configuration] The screen of the display device 21 is displayed on the upper cover 2
It is covered with a shade cover constituted by 3 and the middle cover 24.
When the external light is strong, the upper cover 23 and the middle cover 2
Roll out 4 to the maximum. Upper cover 23 and middle cover 24
Is guided by slide rails 25 and 26,
It is possible to adjust the feeding amount in the sliding direction 27.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an awning cover used to prevent the screen of an in-vehicle or portable display device, particularly a liquid crystal display device, from being hard to see due to the influence of external light.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 10, a display device 51 such as an in-vehicle or portable small liquid crystal monitor has a awning cover 53 in order to prevent the screen 52 from being difficult to see due to the influence of external light. It is used. The awning cover 53 serves as a light-shielding hood to block external light and prevent external light from being reflected on the surface of the screen 52 and making the display content of the screen 52 difficult to see.

[0003]

[Problems to be solved by the device]

 A conventional shade cover 53 as shown in FIG. 10 is fixed after being attached to the display device 51. For example, when the size of the screen 52 is 6 inches in the diagonal length thereof, that is, about 150 mm, the awning cover 53 projects forward by about 100 mm from the surface of the screen 52. At this time, the display device 51 has a horizontal width of 180 mm, a vertical length of 150 mm, and a depth of 60 mm.

Extraneous light to the vehicle-mounted or portable display device 51 changes as the display device 51 moves. Therefore, even if the sunshade cover 53 is required at some point, it becomes unnecessary at another point. If the awning cover 53 is still attached, the range in which the screen 52 can be viewed is limited.

An object of the present invention is to provide an awning cover for a display device, the length of which covers the screen depending on the intensity of external light.

[0006]

[Means for Solving the Problems]

 The present invention is a awning cover for a display device, which is provided on the outer periphery of the screen of the display device, and is provided with a slide mechanism capable of varying the amount of extension to the front of the screen.

[0007]

[Action]

 According to the present invention, the awning cover for a display device is provided on the outer periphery of the screen of the display device and is provided with a slide mechanism. The slide mechanism makes it possible to change the amount of the display device shade cover that extends to the front of the screen. Therefore, by using this slide mechanism, it is possible to adjust the extension amount of the shade cover for a display device according to the intensity of the external light. When the amount of extraneous light is strong, extend the feed amount to prevent the screen from becoming difficult to see. When the amount of extraneous light is weak, shorten the feed amount so that you can view the screen at a wide angle.

[0008]

【Example】

 FIG. 1 shows the structure of a shade cover for a display device according to an embodiment of the present invention. As shown in FIG. 1A, the display device 21 has a screen 22 realized by a liquid crystal display element or the like. Such a display device 21 is used, for example, as a liquid crystal television for receiving a television broadcast, a liquid crystal monitor for displaying various information necessary for vehicle operation, and the like. An upper cover 23 is provided on the outer peripheral portion of the display device 21, and an intermediate cover 24 is interposed between the upper cover 23 and the display device 21. As shown in FIG. 1 (B), the upper cover 23 and the middle cover 24 are guided by slide rails 25 and 26, and the feeding amount can be adjusted in a sliding direction 27.

FIG. 2 is a front view of the shade cover for the display device shown in FIG. The slide rails 25 and 26 are linear grooves provided on the outer circumferences of the middle cover 24 and the display device 21, respectively. On the inner surfaces of the upper cover 23 and the middle cover 24, protrusions 28 and 29 that are loosely fitted to the slide rails 25 and 26 are formed, respectively. The positions where the protrusions 28 and 29 are formed are the rear surfaces of the slide rails 25 and 26 when the upper cover 23 and the middle cover 24 are in the state where the feeding amount is the smallest as shown in FIG. 1 (A). Is the position corresponding to the edge of.

FIG. 3 is a side view of the shade cover for the display device shown in FIG. FIG. 3A corresponds to the state of FIG. 1A and is a state in which the shade cover is not extended. FIG. 3B shows a state in which the upper cover 23 and the middle cover 24 are simultaneously drawn out. The protrusion 29 provided on the middle cover 24 is guided by the slide rail 26 provided on the outer periphery of the display device 21 and reaches the front end thereof. When the upper cover 23 is further extended in this state, the state shown in FIG. This state corresponds to the state shown in FIG. The protrusion 28 of the upper cover 23 is guided by the slide rail 25 provided on the middle cover 24, and the upper cover 23 can be extended until the protrusion 28 reaches the front end of the slide rail 25. According to this embodiment, the amount of the sunshade cover extended can be made variable by using the slide mechanism, so that the screen 22 can be easily adjusted according to the intensity of external light.

FIG. 3D shows the details of the loosely fitted state of the slide rail 25 and the protrusion 28. A protrusion 25 a is formed at the front end of the slide rail 25. In the vicinity of the front end of the protrusion 28, a recess 28a that can be fitted into the protrusion 25a is formed. When the upper cover 23 is extended to the maximum extent, the projection 25a fits into the recess 28a, and the upper cover 23 and the middle cover 24 are locked. Such a lock mechanism is also provided between the middle cover 24 and the outer peripheral portion of the display device 21. Further, a protrusion similar to the protrusion 25a on the slide rail 25 side can be provided at another position so that it can be locked at that position as well.

FIG. 4 shows another embodiment of the present invention. This embodiment is similar to the embodiment shown in FIG. 1, and corresponding parts are designated by the same reference numerals. It should be noted that the optical sensors 1 to 12 are arranged around the screen 22, and a mechanism is provided for automatically adjusting the feeding amount of the upper cover 23 and the middle cover 24 according to the light detection amount of external light. .. According to this embodiment, the delivery amount of the shade cover is automatically adjusted to the optimum value according to the intensity of the external light.

FIG. 5 shows another embodiment of the present invention. This embodiment is similar to the embodiment shown in FIG. 4, and corresponding parts are designated by the same reference numerals. It should be noted that the top cover is divided into three parts, that is, the top cover 31, the right side cover 32 and the left side cover 33. It is possible to adjust the feeding amounts of the upper surface cover 31, the right side surface cover 32, and the left side surface cover 33 independently of each other according to the light detection amounts of the optical sensors 1 to 12, so that more detailed adjustment can be performed. it can. Since the portion corresponding to the upper cover 23 shown in FIG. 4 is divided into three, the shapes of the slide rail 34 and the protrusion 35 are formed in consideration of retaining.

FIG. 6 shows a variable state of the feeding amount in the embodiment shown in FIG. FIG. 6 (A) shows a state in which the delivery amount is minimum, FIG. 6 (B) shows a state in which the delivery amount is intermediate, and FIG. 6 (C) shows a state in which the delivery amount is maximum. The change of these feeding amounts is performed by the slide mechanism 36 provided on the rear surface side of the display device 21.

FIG. 7 shows an electrical configuration of the slide mechanism in the embodiment shown in FIG. An upper motor 37, a right motor 38, and a left motor 39 are provided in the slide mechanism 36 shown in FIG. Each of the motors 37 to 39 is driven by a one-chip microcomputer 40. The optical detection outputs from the optical sensors 1 to 12 are given to the microcomputer 40 as input signals. Power for operating the microcomputer 40 is supplied from a battery (BATT) via a fuse 41. The micro computer 40 operates according to a program stored in advance in a built-in read-only memory (abbreviated as "ROM"), for example, according to Table 1 below.

[0016]

[Table 1]

In this way, the awning cover is divided into three parts, the upper surface, the right side surface and the left side surface, and the payout amount is independently changed for each, so that the automatic adjustment depending on the direction of the incident light is also possible. ..

FIG. 8 shows sectional shapes of the slide rail 34 and the protrusion 35 in the embodiment shown in FIG. The width of the slide rail 34 is enlarged internally, and a T-shaped projection is loosely fitted therein, so that the right side cover 32 is prevented from coming out, for example.

FIG. 9 shows a drive portion of the slide mechanism. For example, a pinion 42 is attached to the shaft of the left motor 39 and meshes with the rack 43. When the left motor 39 rotates, the rack 43 reciprocates. The left side cover 33 is driven by one end of the rack 43. Such a drive mechanism is also provided for the top cover 31 and the right side cover 32. Needless to say, other types of actuators may be used for the drive unit.

In each of the above embodiments, the shade device for the display device has a two-stage structure including the middle cover 24 and the upper cover 23 or the three-divided covers 31 to 33, but one or three stages. Needless to say, the above may be applied. If it is composed of two stages, it is possible to increase the feeding amount with a relatively simple structure.

[0021]

[Effect of the device]

 As described above, according to the present invention, it is possible to cover the outer periphery of the screen of the display device with the awning cover for the display device, and to adjust the feeding amount to the front of the screen by the slide mechanism. In particular, this makes it possible to adjust the awning cover for a display device to a delivery amount according to the intensity of external light even if the in-vehicle or portable display device moves and the intensity of external light changes. When the amount of extraneous light is strong, it is possible to prevent the screen from being hard to see due to the reflected light by increasing the extension amount of the display device shade cover to increase the length for covering the screen. When the amount of extraneous light is weak, the amount of light output is reduced and the length covering the screen is reduced so that the screen can be viewed at a wide angle.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment shown in FIG.

FIG. 3 is a left side view of the embodiment shown in FIG.

FIG. 4 is a perspective view of another embodiment of the present invention.

FIG. 5 is a front view of still another embodiment of the present invention.

FIG. 6 is a left side view of the embodiment shown in FIG.

FIG. 7 is a block diagram showing a schematic electrical configuration of the embodiment shown in FIG.

FIG. 8 is a slide rail 34 in the embodiment shown in FIG.
FIG. 6 is a cross-sectional view showing the structures of and and a protrusion 35.

9 is a simplified perspective view showing a driving unit in the embodiment shown in FIG.

FIG. 10 is a perspective view of a conventional shade cover for a display device.

[Explanation of symbols]

 1-12 Optical Sensor 21 Display Device 22 Screen 23 Upper Cover 24 Middle Cover 25, 26, 34 Slide Rails 28, 29, 35 Protrusion 31 Top Cover 32 Right Side Cover 33 Left Side Cover 36 Slide Mechanism 37 Upper Motor 38 Right Motor 39 Left motor 40 microcomputer

Claims (1)

[Scope of utility model registration request] 1. A awning cover for a display device, comprising a slide mechanism which is provided on the outer periphery of the screen of the display device, and which has a variable sliding amount to the front of the screen.