JP2007219336A - Display protective device and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display protective device and a display device which protect a display screen more surely from a physical impulse. <P>SOLUTION: A liquid crystal panel protective device 4 arranged in front of a liquid crystal panel is provided with: an almost transparent baggy protective member which is almost in the vacuum state and permits to see the liquid crystal panel therethrough; a gas holding part for holding a gas injected into the protective member; a control valve 42 which is connected between the protective member and the gas holding part and controls the gas flowing into the protective member from the gas holding part; a position sensor 44 for detecting a distance to an obstacle existing in front of the protective member; a velocity calculation program 47A which makes a CPU 45 compute approaching velocity of the obstacle from time variation in a detected distance; and an open/close control program 47B for making the gas flow from the gas holding part into the protective member by opening the control valve 42 when the detected distance is a predetermined value or shorter and a calculated velocity is a predetermined value or higher. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display display protection device and a display device.

Conventionally, a liquid crystal panel, which is a display, is susceptible to external physical shocks, and thus needs to be protected. And, for example, in a display device including a liquid crystal panel, there is known a device that protects a liquid crystal by including a protection bar at the time of falling, and projecting the protection bar at the time of falling to the front side or the back side of the liquid crystal panel. (For example, Patent Document 1).
Moreover, in an airbag device mounted on a vehicle or the like, the deployment of the airbag is controlled by detecting the distance to the occupant with an infrared sensor and estimating the occupant's posture, and the occupant is detected from the physical impact at the time of the collision. What protects is also known (for example, patent document 2).
JP 2001-005397 A JP-A-10-315906

However, in order to protect the liquid crystal panel from an external physical impact, it is necessary to protect not only the physical impact at the time of falling but also an object colliding against the liquid crystal panel.
In addition, since the structure and application are completely different between the vehicle and the liquid crystal panel, there is a possibility that the performance of the liquid crystal panel may be deteriorated if the airbag device used in the vehicle is simply applied to the liquid crystal panel.

  The subject of this invention is providing the display display protection apparatus and display apparatus which protect a display display from a physical impact more reliably.

Invention of Claim 1 is a display apparatus provided with a display display and the display display protection apparatus provided in a display part provided with the said display display,
The display display protection device includes:
A bag-shaped protective member provided on the front side of the display;
A gas holding unit for holding the gas injected into the protective member;
A control valve that connects the protective member and the gas holding unit, and adjusts the inflow of gas from the gas holding unit to the protective member;
A distance detecting means provided on the front side of the display, for detecting a distance from an obstacle existing on the front side of the protective member;
Speed calculating means for calculating the approach speed of the obstacle from the time change of the distance detected by the distance detecting means;
Vibration detecting means for detecting vibration of the protective member;
When the distance detected by the distance detection means is not more than a predetermined value, the speed calculated by the speed calculation means is not less than a predetermined value, and the amplitude of vibration detected by the vibration detection means is not less than a predetermined value, A regulating valve control means for opening a regulating valve and causing gas to flow into the protective member from the gas holding portion;
With
The protective member is
It consists of a substantially transparent film material, and when the gas does not flow in from the gas holding part, the protection member is in a substantially vacuum state, and the display can be visually recognized through the protection member. It is characterized by that.

Invention of Claim 2 is a display display protection apparatus provided in a display apparatus provided with a display.
A substantially transparent bag-shaped protective member provided on the front side of the display;
A gas holding unit for holding the gas injected into the protective member;
A control valve that connects the protective member and the gas holding unit, and adjusts the inflow of gas from the gas holding unit to the protective member;
A distance detecting means provided on the front side of the display, for detecting a distance from an obstacle existing on the front side of the protective member;
Speed calculating means for calculating the approach speed of the obstacle from the time change of the distance detected by the distance detecting means;
When the distance detected by the distance detection means is not more than a predetermined value and the speed calculated by the speed calculation means is not less than a predetermined value, the control valve is opened, and the protective member is moved from the gas holding part to the protection member. A control valve control means for introducing gas;
With
The protective member is
When the gas does not flow in from the gas holding part, it is in a substantially vacuum state, and the display can be visually recognized through the protective member.

The invention according to claim 3 is the display display protection device according to claim 2,
Comprising vibration detecting means for detecting the vibration of the protective member;
The control valve control means includes
When the amplitude of vibration detected by the vibration detection means is a predetermined value or more, the control valve is opened, and gas is caused to flow into the protective member from the gas holding portion.

According to the first aspect of the present invention, the protective member is provided on the front surface side of the display, the gas injected into the protective member is held by the gas holding unit, and the protective member and the gas holding unit are Are connected, the inflow of gas from the gas holding part to the protective member is adjusted, and the distance to the obstacle existing on the front side of the protective member is detected by the distance detecting means provided on the front side of the display. The speed calculation means calculates the approach speed of the obstacle from the time change of the distance detected by the distance detection means, and the control valve control means calculates that the distance detected by the distance detection means is equal to or less than a predetermined value and the speed When the speed calculated by the calculating means is equal to or higher than the predetermined value, the control valve is opened and gas flows into the protective member from the gas holding portion. When an object is present at a distance less than a predetermined value and approaches at an approach speed greater than a predetermined value, the protective member expands due to the inflow of gas, and not only a physical impact at the time of falling Since the display display can be protected from an object or the like that collides with the display, the display display can be more reliably protected from physical shock.
In addition, the protective member is made of a substantially transparent film material, and is in a substantially vacuum state when no gas flows from the gas holding portion, so that the display can be visually recognized through the protective member. Unlike the airbag device used in a vehicle, the protective member is preferable because the image displayed on the display display is not obstructed.

  Further, when the vibration of the protection member is detected by the vibration detection means, and the amplitude of the vibration detected by the vibration detection means is greater than or equal to a predetermined value, the control valve control means opens the control valve and holds the gas in the protection member. Since gas flows in from the part, when the protective member vibrates with an amplitude greater than or equal to a predetermined value due to an obstacle present on the front side of the display display, the protective member swells to protect the display display by the gas flowing in As a result, the display can be more reliably protected from physical shock.

  In addition, the protective member can prevent a hand or the like from directly touching the display and can prevent contamination due to hand dirt.

According to the second aspect of the present invention, the substantially transparent bag-like protective member is provided on the front side of the display, and the gas injected into the protective member is held by the gas holding portion, and is protected by the control valve. An obstacle existing on the front surface side of the protective member by the distance detection means provided on the front surface side of the display display by adjusting the inflow of gas from the gas holding portion to the protective member while connecting the member and the gas holding portion. And the speed calculating means calculates the approach speed of the obstacle from the time change of the distance detected by the distance detecting means, and the control valve control means calculates the distance detected by the distance detecting means to a predetermined value. When the speed calculated by the speed calculation means is equal to or greater than a predetermined value below, the control valve is opened and gas flows into the protective member from the gas holding portion. When an obstacle is present on the front side at a distance of a predetermined value or less and approaches at an approach speed of a predetermined value or more, the protective member swells due to the inflow of gas, so Since the display display can be protected not only from the physical impact but also from an object or the like colliding toward the display display, the display display can be more reliably protected from the physical impact.
Moreover, since the protective member is in a substantially vacuum state when no gas flows from the gas holding portion and the display can be visually recognized through the protective member, the airbag device used in the vehicle Unlike this, it is preferable that the image displayed on the display display is not obstructed by the protective member.

  In addition, the protective member can prevent a hand or the like from directly touching the display and can prevent contamination due to hand dirt.

  According to the third aspect of the invention, the same effect as that of the second aspect of the invention can be obtained. In particular, the vibration of the protective member is detected by the vibration detecting means, and the control valve control means. When the amplitude of vibration detected by the vibration detection means is greater than or equal to a predetermined value, the control valve is opened and gas is allowed to flow into the protective member from the gas holding part, so that it is protected by an obstacle existing on the front side of the display. When the member vibrates with an amplitude greater than or equal to a predetermined value, the protective member expands due to the inflow of gas to protect the display display, and the display display can be more reliably protected from physical impact. .

  Hereinafter, the best mode for carrying out a display display protection device and a display device according to the present invention will be described in detail with reference to the drawings. In the present embodiment, the liquid crystal panel 20 will be described as an example of a display display.

  First, the configuration of the display device 1 according to the present invention will be described with reference to FIG. The display device 1 according to the present embodiment includes, for example, a display unit 2, a support base 3, a liquid crystal panel protection device 4 as a display display protection device, and the like as shown in FIG.

The display unit 2 includes, for example, a liquid crystal panel 20 and a panel frame 21 that holds the liquid crystal panel 20.
The liquid crystal panel 20 is formed in, for example, a substantially rectangular flat plate shape.
The panel frame 21 is a frame including a substantially rectangular recess 22 into which the liquid crystal panel 20 can be fitted, for example.

  The support base 3 is, for example, a base that is connected to the lower portion of the panel frame 21 and supports the display unit 2.

  The liquid crystal panel protection device 4 includes, for example, as shown in FIGS. 1 to 3, a protection member 40 provided on the front side of the liquid crystal panel 20, a gas holding unit 41 that holds gas injected into the protection member 40, A control valve 42 that connects the protective member 40 and the gas holding unit 41, a vibration sensor 43, a position sensor 44, a CPU (Central Processing Unit) 45, a RAM (Random Access Memory) 46, a storage unit 47, and the like are configured. .

The protection member 40 is a bag-shaped member formed from, for example, a substantially transparent film member, and is attached to the front side of the liquid crystal panel 20 of the panel frame 21 so as to cover the recess 22 of the panel frame 21.
More specifically, the protection member 40 is opposed to the first surface 401 fixed to the panel frame 21 and the first surface 401, for example, as shown in FIGS. 2 (a) and 2 (b). The third surface connecting the lower surface of the first surface 401 and the lower surface of the second surface 402 to the second surface 402 of which the upper surface is fixed to the panel frame 21 together with the first surface 401 and the lower surface is not fixed to the panel frame 21. This is a bag-like member made up of the surface 403, and when attached to the display device 1, the inside thereof is in a substantially vacuum state so that the image displayed on the liquid crystal panel 20 can be visually recognized.
In addition, an opening is provided in a part of the third surface 403, and this opening is connected to the control valve 42. When the control valve 42 is opened, a gas flows from the gas holding unit 41. It is an entrance.

  The gas holding unit 41 is provided, for example, below the protective member 40 of the panel frame 21 and is connected to the lower end of the protective member 40 via the adjustment valve 42. The gas holding unit 41 holds the gas injected into the protection member 40 in a compressed state. The gas injected into the protective member 40 is desirably a gas that is harmless even if inhaled by a human for safety.

The adjustment valve 42 is controlled to open and close by, for example, the CPU 45 executing an opening / closing control program 47B described later, and adjusts the inflow of gas from the gas holding unit 41 to the protection member 40.
For example, as shown in FIG. 2B, when the adjustment valve 42 is opened, the gas from the gas holding portion 41 flows into the protection member 40, and the second surface 402 of the protection member 40 moves to the front side. By moving, the protective member 40 expands.

  The vibration sensor 43 is an acceleration sensor or the like, for example, and detects vibration of the protection member 40. Specifically, the vibration sensor 43 detects the vibration of the protection member 40 and outputs a detection signal corresponding to the magnitude of the vibration amplitude to the CPU 45. Thereby, the vibration sensor 43 functions as a vibration detection means.

  The position sensor 44 is an infrared sensor or the like, for example, and is provided on the front side of the liquid crystal panel 20 of the panel frame 21 to detect a distance from an obstacle existing on the front side of the protection member 40. Specifically, the position sensor 44 detects the distance to the obstacle existing on the front surface side of the protection member 40 and outputs a distance detection signal corresponding to the length of the distance to the CPU 45. Thereby, the position sensor 44 functions as a distance detection means.

  For example, the CPU 45 reads the processing program stored in the storage unit 47, develops it in the RAM 46, and executes it, thereby controlling the entire liquid crystal panel protection device 4.

  The RAM 46 expands the processing program executed by the CPU 45 in the program storage area in the RAM 46 and stores the input data and the processing result generated when the processing program is executed in the data storage area.

  The storage unit 47 has, for example, a recording medium (not shown) in which programs, data, and the like are stored in advance, and this recording medium is configured by, for example, a semiconductor memory. The storage unit 47 stores various data, various processing programs, data processed by executing these programs, and the like for realizing the function of the CPU 45 controlling the entire liquid crystal panel protection device 4. More specifically, the storage unit 47 stores, for example, a speed calculation program 47A, an opening / closing control program 47B, etc., as shown in FIG.

  The speed calculation program 47A is a program that, for example, causes the CPU 45 to realize a function of calculating the approach speed of an obstacle existing on the front side of the protective member 40 from the time change of the distance detected by the position sensor 44. More specifically, the speed calculation program 47A causes the CPU 45 to realize a function of calculating the approach speed of an obstacle existing on the front side of the protective member 40 from the time change of the distance detection signal input from the position sensor 44. It is a program. The CPU 45 functions as a speed calculation unit by executing the speed calculation program 47A.

  In the opening / closing control program 47B, for example, the CPU 45 detects the distance detected by the position sensor 44 below a predetermined value, the speed calculated by executing the speed calculation program 47A exceeds the predetermined value, and the vibration sensor 43 detects the speed. When the amplitude of vibration is equal to or greater than a predetermined value, the control valve 42 is opened, and a program for realizing a function of allowing gas to flow into the protective member 40 from the gas holding portion 41 is a program. More specifically, the opening / closing control program 47B causes the CPU 45 to have the distance detected by the position sensor 44 equal to or less than a predetermined value, the speed calculated by executing the speed calculation program 47A to be equal to or greater than a predetermined value, and the vibration sensor 43. It is determined whether or not the amplitude of vibration detected by the above is a predetermined value or more, the distance detected by the position sensor 44 is a predetermined value or less, and the speed calculated by executing the speed calculation program 47A is a predetermined value or more. The program realizes a function of opening the adjustment valve 42 and causing gas to flow into the protective member 40 from the gas holding portion 41 when the amplitude of vibration detected by the vibration sensor 43 is equal to or greater than a predetermined value. The CPU 45 functions as a control valve control unit by executing the opening / closing control program 47B.

Next, the operation of the liquid crystal panel protection device 4 configured as described above will be described with reference to the flowchart shown in FIG.
First, the position sensor 44 detects the distance to the obstacle existing on the front side of the protective member 40, the vibration sensor 43 detects the vibration of the protective member 40, and the CPU 45 executes the speed calculation program 47A to thereby detect the obstacle. The approach speed of the object is calculated (step S1).

  Next, the CPU 45 executes the opening / closing control program 47B, so that the distance to the obstacle obtained in step S1 is not more than a predetermined value, the approach speed is not less than a predetermined value, and the vibration amplitude of the protection member 40 is predetermined. It is determined whether or not the value is greater than or equal to the value (step S2).

When the CPU 45 determines in step S2 that the distance from the obstacle obtained in step S1 is not more than a predetermined value, the approach speed is not less than a predetermined value, and the amplitude of vibration of the protective member 40 is not not less than a predetermined value. (Step S2; No) returns to Step S1.
When the CPU 45 determines in step S2 that the distance from the obstacle obtained in step S1 is equal to or less than a predetermined value, the approach speed is equal to or greater than a predetermined value, and the amplitude of vibration of the protective member 40 is equal to or greater than a predetermined value. (Step S2; Yes), the CPU 45 opens the control valve 42 based on the execution of the opening / closing control program 47B, and causes the gas from the gas holding unit 41 to flow into the protection member 40 (Step S3), and ends this process. To do.

According to the liquid crystal panel protection device 4 and the display device 1 according to the present invention described above, the protection member 40 is provided on the front side of the liquid crystal panel 20, and the gas injected into the protection member 40 by the gas holding unit 41 is provided. The protective member 40 and the gas holding part 41 are connected by the adjustment valve 42, and the inflow of gas from the gas holding part 41 to the protective member 40 is adjusted, and is provided on the front side of the liquid crystal panel 20. The position sensor 44 detects the distance to the obstacle existing on the front side of the protective member 40, and the CPU 45 executes the speed calculation program 47A, whereby the approach speed of the obstacle is calculated from the time change of the detected distance. When the detected distance is not more than a predetermined value and the calculated speed is not less than the predetermined value by the CPU 45 executing the opening / closing control program 47B, the control valve 2 is opened, and gas flows into the protective member 40 from the gas holding portion 41. Therefore, an obstacle exists on the front side of the liquid crystal panel 20 at a distance of a predetermined value or less, and an approach speed of a predetermined value or more. In the case of approaching with the liquid crystal panel 20, the protective member 40 swells when the gas flows in, so that the liquid crystal panel 20 is not only from a physical impact at the time of falling but also from an object or the like colliding toward the liquid crystal panel 20. Thus, the liquid crystal panel 20 can be more reliably protected from physical impact.
Further, the protective member 40 is made of a substantially transparent film material and is in a substantially vacuum state when no gas flows from the gas holding portion 41 so that the liquid crystal panel 20 can be visually recognized through the protective member 40. Therefore, unlike the airbag device used in the vehicle, the protective member 40 is suitable for the image displayed on the liquid crystal panel 20 not being blocked.

  Further, the vibration of the protection member 40 is detected by the vibration sensor 43, and the CPU 45 executes the opening / closing control program 47B to open the control valve 42 when the detected amplitude of vibration is equal to or greater than a predetermined value. Since the gas is allowed to flow into the protective member 40 from the gas holding portion 41, when the protective member 40 vibrates with an amplitude greater than or equal to a predetermined value due to an obstacle existing on the front side of the liquid crystal panel 20, the protective member is caused by the gas flowing in. 40 swells to protect the liquid crystal panel 20, and the liquid crystal panel 20 can be more reliably protected from physical shock.

  In addition, the protective member 40 can prevent a hand or the like from directly touching the liquid crystal panel 20 and can prevent contamination due to hand dirt or the like.

The protection member 40 may be provided in the liquid crystal panel protection device 4 so as to be replaceable. Thereby, when the protection member 40 becomes dirty due to dirt or the like, the visibility of the liquid crystal panel 20 can be maintained in a good state by replacing the protection member 40.
Further, the vibration sensor 43 is not an essential configuration, and an obstacle may be detected only by the position sensor 44.

It is the front view (FIG. 1 (a)) and side view (FIG.1 (b)) of the display apparatus which concern on this invention. The figure which shows the principal part of the display part and liquid crystal panel protection apparatus before the protection member which concerns on this invention expand | swells (FIG.2 (a)), the principal part of the display part after the protection member which concerns on this invention expand | swells, and liquid crystal It is a figure (Drawing 2 (b)) showing a panel protection device. It is a block diagram explaining the internal structure of the liquid crystal panel protection apparatus which concerns on this invention. It is a flowchart explaining operation | movement of the liquid crystal panel protection apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Display part 20 Liquid crystal panel (display display)
4 Liquid crystal panel protection device 40 Protection member 41 Gas holding part 42 Control valve 43 Vibration sensor (vibration detection means)
44 Position sensor (distance detection means)
45 CPU (speed calculation means, control valve control means)
47A Speed calculation program (speed calculation means)
47B Open / close control program (control valve control means)

Claims (3)

In a display device comprising: a display display; and a display display protection device provided in a display unit including the display display.
The display display protection device includes:
A bag-shaped protective member provided on the front side of the display;
A gas holding unit for holding the gas injected into the protective member;
A control valve that connects the protective member and the gas holding unit, and adjusts the inflow of gas from the gas holding unit to the protective member;
A distance detecting means provided on the front side of the display, for detecting a distance from an obstacle existing on the front side of the protective member;
Speed calculating means for calculating the approach speed of the obstacle from the time change of the distance detected by the distance detecting means;
Vibration detecting means for detecting vibration of the protective member;
When the distance detected by the distance detection means is not more than a predetermined value, the speed calculated by the speed calculation means is not less than a predetermined value, and the amplitude of vibration detected by the vibration detection means is not less than a predetermined value, A regulating valve control means for opening a regulating valve and causing gas to flow into the protective member from the gas holding portion;
With
The protective member is
It consists of a substantially transparent film material, and when the gas does not flow in from the gas holding part, the protection member is in a substantially vacuum state, and the display can be visually recognized through the protection member. A display device characterized by that. In a display display protection device provided in a display device including a display,
A substantially transparent bag-shaped protective member provided on the front side of the display;
A gas holding unit for holding the gas injected into the protective member;
A control valve that connects the protective member and the gas holding unit, and adjusts the inflow of gas from the gas holding unit to the protective member;
A distance detecting means provided on the front side of the display, for detecting a distance from an obstacle existing on the front side of the protective member;
Speed calculating means for calculating the approach speed of the obstacle from the time change of the distance detected by the distance detecting means;
When the distance detected by the distance detection means is not more than a predetermined value and the speed calculated by the speed calculation means is not less than a predetermined value, the control valve is opened, and the protective member is moved from the gas holding part to the protection member. A control valve control means for introducing gas;
With
The protective member is
When the gas does not flow in from the gas holding part, the display display protection device is in a substantially vacuum state, and the display can be visually recognized through the protection member. Comprising vibration detecting means for detecting the vibration of the protective member;
The control valve control means includes
The said adjustment valve is opened when the amplitude of the vibration detected by the said vibration detection means is more than predetermined value, Gas is flowed into the said protection member from the said gas holding | maintenance part. Display protection device.

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