CN1690761A - Liquid crystal display image display unit for screen frame display when the light source is shut off - Google Patents
Liquid crystal display image display unit for screen frame display when the light source is shut off Download PDFInfo
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- CN1690761A CN1690761A CN 200410020466 CN200410020466A CN1690761A CN 1690761 A CN1690761 A CN 1690761A CN 200410020466 CN200410020466 CN 200410020466 CN 200410020466 A CN200410020466 A CN 200410020466A CN 1690761 A CN1690761 A CN 1690761A
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Abstract
The present invention relates to LCD video display device that can show image of video display to screen when power source is shutdown and has follows characterized structures: microcomputer part to control display device; cooling fan to receive and sense microcomputer control signal; light tube to receive and sense microcomputer control signal and project light to LCD screen; polarization tube group set on back of LCD screen and the LED side of polarization tube. When receiving startup signal from outer power source, microcomputer starts light source of light tube to make LED turn-on and show image of video display described system current running state; and, when receiving cut signal from outer power source, microcomputer turns down light source to make LED turn-on and show image of video display to screen. The effect of this invention is that user can just through image showed on video display learn and hold the running state of projection system.
Description
Technical field
The present invention relates to LCD (LCD) video display equipment, especially relate under the light source closed condition of LCD image display device, display screen shows the display device of (on screen display) picture.
Background technology
Recently, new functional liquid crystal display video displays such as lcd projection systems such as liquid crystal deletion projector or liquid crystal deletion rear-projection TV attract tremendous attention.Domestic consumer has also promoted the exploitation to this series products to the growing interest of large screen television and home theater.
Lcd projection systems is utilized the light source of high gray scale, intense light source is reflexed to LCD get on, and LCD to the blocking-up of light source and the difference induction that penetrates, realizes being rich in the image frame of lively sense by pixel.Therefore,, do not have light to pass through LCD, just any image can not occur on the picture yet when light source (Lamp) when being in off-state.But, owing to be subjected to high gray scale and high temperature to make the influence of technical barrier such as light source (Lamp) shortening in serviceable life, opening again behind the dump of lcd projection systems under this situation, if light source (Lamp) is in out state, the influence that will be subjected to certain degree serviceable life of light source (Lamp).Therefore, under power opening state, a standby process (Stand-by) should be arranged, make light source (Lamp) fully open light source (Lamp) again after the cooling.
When system power supply was closed (OFF), light source (Lamp) also was in closed condition naturally.When if the cooling fan in the standby mode (fan) can not run well, even light source (Lamp) is when also being in closed condition, the temperature of light source (Lamp) also can continue to rise in a period of time.Because the heat that light source (Lamp) distributes makes internal system also rise thereupon.Therefore, for the temperature that makes the light source (Lamp) in the standby mode descends, should make cooling fan (fan) in the certain hour section, continue to keep running well, thereby reduce the internal system temperature.
Based on this characteristics of lcd projection systems, there is corresponding problem in traditional optical projection system.That is to say, if under traditional optical projection system situation that portion's equipment does not cool off as yet fully within it, opening power, but because light source this moment (Lamp) still is in closed condition (OFF).Therefore, if the user do not knowing under the situation when light source (Lamp) is opened, usually can cool off fully up to light source (Lamp), and feel inconvenient because of waiting last several seconds or several minutes.Many users after pressing the power supply opening button, because image frame can not manifest immediately, the illusion of thinking that system breaks down usually can occur when using this optical projection system for the first time.
As user during at powered-down, although picture is closed, but because system's cooling fan still remains in operation in the certain hour section, and often occur thinking by mistake to be the situation that system is still being remained in operation owing to own operating mistake, so press power switch once more, thereby the situation of this Switching Power Supply repeatedly occurs.
Generally, the conventional scheme that solves this class problem is when the open and close power supply, and voice-over face is provided with LCD window or the LED that shows standby mode (Stand-by mode).But when voice-over portion was provided with above-mentioned LCD window or LED, the normal existence was difficult for the problem finding, confirm.Especially for the user of first use optical projection system, more difficultly notice this problem, therefore,, weak point is arranged also eliminating fully aspect the problem that conventional art exists.Therefore, we need a kind of scheme that can make the user readily understand the system standby mode state.
Summary of the invention
The purpose of this invention is to provide a kind of optical projection system that can solve the problem of above-mentioned conventional liquid crystal optical projection system existence, guarantee at electric power starting or when closing, the on-screen displays of display system running status in the standby mode (Stand-by mode) is projected on the screen of display system, like this, even use the user of lcd projection systems also can be well understood to the operation conditions of system for the first time.
First purpose of the present invention will be provided at exactly behind the lcd projection systems power supply opening to light source (Lamp) and start under this mode state, a kind of like this display device that can be shown the on-screen displays of describing the optical projection system operation conditions.Equally, the present invention also provides simultaneously behind the lcd projection systems power-off, a kind of like this display device that can be shown the on-screen displays of describing the optical projection system operation conditions.
Formation of the present invention is: the LCD image displaying appliance of the present invention that possesses first characteristics has following architectural feature.That is the microcomputer portion that video display is controlled (Micro computer); Receive, respond to the cooling device of working after the microcomputer control signal; Receive, the signal of induction microcomputer, and with the fluorescent tube of ray cast to the liquid crystal display equipment screen (panel); Be arranged on the Polarizer assembly of liquid crystal display equipment screen (panel) back; Be arranged on Polarizer edge-lit device.After above-mentioned microcomputer (Micro computer) receives signal from the power supply opening of outside, activate illuminator, till lamp tube light source starts, and the on-screen displays of the current operation conditions of descriptive system is presented on the screen, and make when power supply is not opened before this, also the cooling device of normal operation does not bring into operation within the predetermined time.And, after above-mentioned microcomputer (Micro computer) receives situation from the dump signal of outside, above-mentioned lamp tube light source is closed, make illuminator be in starting state, and the on-screen displays of the current operation conditions of demonstration descriptive system, make cooling device in preset time, continue normal operation simultaneously.
The LCD image displaying appliance of the present invention of second characteristic that possesses has following architectural feature.That is, the microcomputer portion that video display is controlled (Micro computer), receive induction microcomputer control signal and the cooling device that operates; Receive, the signal of induction microcomputer, and with the fluorescent tube of ray cast to the liquid crystal display equipment screen (panel); Be arranged on the Polarizer assembly of liquid crystal display equipment screen (panel) back and be arranged on above-mentioned liquid crystal display equipment screen and above-mentioned polarisation pipe between, be connected with drive unit, can respond to the background light that presets control signal and move (Back light) element of above-mentioned microcomputer (Micro computer).After above-mentioned microcomputer (Micro computer) receives signal from the power supply opening of outside, start background light (Back light), till lamp tube light source starts, and the on-screen displays of the current operation conditions of descriptive system is presented on the screen, and make when power supply is not opened before this, also the cooling device of normal operation does not bring into operation in preset time, in the time of presetting, background light (Back light) and on-screen displays are closed, and drive above-mentioned drive unit, make background light (Back light) move to above-mentioned liquid crystal display equipment screen front.And, under above-mentioned microcomputer (Micro computer) is receiving situation from the signal of the dump of outside, above-mentioned lamp tube light source is closed, and drive above-mentioned drive unit, make background light (Back light) move to above-mentioned liquid crystal display equipment screen back, make background light (Back light) be in starting state, and show the on-screen displays of the current operation conditions of descriptive system, make cooling device in preset time, continue normal operation simultaneously.
Below, with reference to accompanying drawing embodiments of the invention are elaborated.
Description of drawings
Fig. 1 is the lcd projection systems structure sketch map in the embodiment of the invention one.
Fig. 2 is in the embodiment of the invention one, by the observed Polarizer outboard profile of the prism of lcd projection systems.
Fig. 3 is the lcd projection systems optics engine sketch map planimetric map in the embodiment of the invention one.
Fig. 4 a is standby mode (Stand-by mode) operational flowchart under lcd projection systems power source ON (unlatching) state in the embodiment of the invention 1.
Standby mode (Stand-by mode) operational flowchart under lcd projection systems power supply OFF (disconnection) state in Fig. 4 b embodiment of the invention one.
Fig. 5 is the lcd projection systems structure sketch map in the embodiment of the invention two.
Fig. 6 is the structure sketch map of the optics Engine of the lcd projection systems in the embodiment of the invention two.
Fig. 7 a is the background light (Back light) of the lcd projection systems in the embodiment of the invention two.
Fig. 8 is that the lcd projection systems in the embodiment of the invention two is cut off at light source and opened that Backlight is provided with planimetric map under (OFF) state.
Fig. 8 and Fig. 9 are that the lcd projection systems in the embodiment of the invention two is provided with planimetric map and front view (FV) what light source was opened Back light under (ON) state.
Figure 11 a is lcd projection systems standby mode (Stand-by mode) operational flowchart under power source ON (unlatching) state in the embodiment of the invention two.
Figure 11 b is lcd projection systems standby mode (Stand-bymode) operational flowchart under power supply OFF (disconnection) state in the embodiment of the invention two.
The components and parts title explanation ※ of ※ accompanying drawing major part
110: microcomputer
150,151,152: liquid crystal display equipment screen (Panel)
160: lamp (light source (Lamp))
170: cooling fan
190，191，192：LED
200: detuner (Mode)
210: background light (Back light)
310,311,312: the polarisation pipe
Embodiment
Fig. 1 is the lcd projection systems structure sketch map in the invention process example one.Lcd projection systems (100) specifically comprises as lower member.That is, receive external image signal R (purple), G (green), B (blueness) signal of video signal acceptance division (120); To handling from the signal of above-mentioned signal receiving part output and it being projected signal processing part (130) on the liquid crystal display equipment screen (150-152); The microcomputer portion (Microcomputer) (110) that system operation is controlled; The liquid crystal display drive circuit board (140) that R, G, B and liquid crystal display equipment screen (150-152) are driven; With the fluorescent tube (160) of light source projects to the above-mentioned liquid crystal display equipment screen (150-152); The cooling fan (170) that fluorescent tube is lowered the temperature; The storing apparatus (180) that the file that microcomputer is handled stores; LED (190-192) etc.As shown in Figure 2, the polarisation sheet frame be arranged in the polarisation pipe up and down around, under the standby mode of electric power starting/disconnection, when lamp tube light source is in closed condition,, thereby on-screen displays is shown to the quantitative light source of liquid crystal display equipment screen projection.
Fig. 3 is lcd projection systems optics Engine (300) planimetric map in the invention process example one.Above-mentioned optical module (300) comprises as the lower part.That is, prism (320) (Pirsm); Be arranged in this prism (Pirsm) R, G, B panel of LCD (150-152) all around; Be positioned at R, G, the B polarisation pipe (310-312) at each panel of LCD rear portion; Be arranged in above-mentioned each polarisation pipe R, G, B LED (190-192) all around.As shown in the figure, R, the G, the B image that form by each LCD (150-152) are focused on by prism and filter, and R on the prism (340) and B signal of video signal are reflected on R reflecting surface and the B reflecting surface, and face G signal of video signal is projected onto on the screen by behind the prism.
Below, operation is elaborated to lcd projection systems for 4a and Fig. 4 b in conjunction with the accompanying drawings.
At first, Fig. 4 a is standby mode (Stand-by mode) operational flowchart under lcd projection systems power source ON (unlatching) state in the invention process example one.
Shown in Fig. 4 a, when power source ON (stage 10), microcomputer (Micro computer) (Fig. 1 110) makes LED be in ON (unlatching) state, and the on-screen displays of descriptive system current operation status is shown to (stage 11) on the screen, can demonstrate the contents such as default shut-in time of relevant fluorescent tube on the on-screen displays.Then, whether microcomputer (Micro computer) (110) should run well in setting-up time to the cooling fan under the power down state before the above-mentioned electric power starting and judge (stage 12).If above-mentioned cooling fan is in the situation ("No" in stage 12) that does not run well, then select cooling fan is remained in operation in the time of presetting (stage 13), afterwards, make fluorescent tube be in the ON state, cooling fan is remained in operation (stage 14).In the stage 12, if cooling fan is in ("Yes" in the stage 12) under the normal operation situation in preset time, make LED and on-screen displays be in closed condition, and the image (stage 15) of display lamp pipe formation.Thus, during power source ON, finish the LED running program in the standby mode (Stand-bymode).
Fig. 4 b is standby mode (Stand-by mode) operational flowchart under lcd projection systems power supply OFF (disconnection) state in the invention process example one.
Shown in Fig. 4 b, when power supply OFF (stage 20), microcomputer (Micro computer) (Fig. 1 110) makes light source (Lamp) (fluorescent tube) be in OFF (closing) state, make LED be in the ON state, the on-screen displays of the descriptive system current operation status that shows on the output screen (stage 21) can demonstrate the contents such as the default duration of runs of relevant cooling fan on the on-screen displays.Then, whether microcomputer (Micro computer) (110) detection cooling fan is still turning round (stage 22) in setting-up time.If above-mentioned preset time is still asked end ("No" in stage 22), then select cooling fan was remained in operation in the time of presetting.If cooling fan is in ("Yes" in the stage 22) under the normal operation situation in preset time, hand hay cutter makes LED and on-screen displays be in closed condition (stage 23).So far, during power supply OFF, finish the LED running program in the standby mode (Stand-by mode).
Below, in conjunction with Fig. 5 to Figure 10, the appended enforcement example 2 of the present invention is described.In relating to Fig. 1 to Fig. 4, during corresponding components and parts, please refer to shown in the accompanying drawing and explain.
At first, Fig. 5 is lcd projection systems (500) the structure sketch map in the invention process example two.
As shown in Figure 5, lcd projection systems (500) specifically comprises following several sections.That is, receive the signal of video signal acceptance division (120) of the signal of video signal of outside R, G, B; Is the conversion of signals from the output of signal of video signal receiving unit the signal processing part (130) that is fit to lcd projection systems (500) signal; The microcomputer (Micro computer) (110) that system operation is controlled; Drive the liquid crystal display drive circuit board (140) of R, G, B liquid crystal display equipment screen (150-152); With the fluorescent tube (160) of source reflection to above-mentioned liquid crystal display equipment screen (150-152); The cooling fan (170) that lamp hole temperature is reduced; The memory (180) that the file that microcomputer (Micro computer) is handled stores; Motor (200); Background light (Back light) (210).Above-mentioned background lamp (Back light) (210) is between liquid crystal display equipment screen and polarisation pipe, when power source ON/OFF, according to the standby mode situation, by engine (200), on the on-screen displays display screen.
Fig. 6 is optics Engine (600) planimetric map of the lcd projection systems of instance graph 2 of the present invention.The structure of optics Engine (300) among optics Engine (600) and Fig. 3 is similar a bit, difference is that optics Engine (600) also comprises Motor (200), screw rod (Screw) (220) and R, G, B background light (210-212), but does not have the LED device.Much more no longer other just state with the ingredient identical or that repeat in implementing example 1.Above-mentioned background lamp (210-212) lays respectively between R, G, B liquid crystal display equipment screen (150-152) and R, G, the B polarisation pipe (310-312), links to each other with above-mentioned Motor (motor) (200), Screw (screw rod) (220) etc., changes direction.The mobile problem of relevant background light (210-212) is explained with reference to Fig. 7-10, does step explanation in detail in the back.
Fig. 7 a and Fig. 7 b are respectively the front view (FV) and the outboard profiles of R background light shown in Figure 6.Shown in Fig. 7 a, background light (210) has a bracing frame at an upper portion thereof, and this bracing frame (610) shown in Fig. 7 a, has a circular open, by this opening, links to each other with screw rod (220).Motor rotates and drives the screw rod running, and background light (210) links to each other with screw rod (220) by the screw structural on the opening (720), rotates.
Fig. 8 shows is that the position that the light source of lcd projection systems disconnects between background light (Back light) (210), polarisation pipe (310) and the liquid crystal display equipment screen three under (OFF) state concerns planimetric map.As shown in Figure 8, background light (Back light) (210) is positioned between polarisation pipe (310) and the liquid crystal display equipment screen, especially when light source is in the OFF state, be in the standby mode of ON/OFF at power supply, background light is activated, and by liquid crystal display equipment screen (150) display screen display frame.
What Fig. 9 showed is that the position between background light (Backlight) (210), polarisation pipe (310) and the liquid crystal display equipment screen three concerns planimetric map when the light source of lcd projection systems is in unlatching (ON) state.When fluorescent tube was in the ON state, the screw rod (220) that links to each other with above-mentioned motor (200) rotated, and background light (Back light) (210) is moved on one side to liquid crystal display equipment screen.If when background light (Back light) (210) broke away from liquid crystal display equipment screen, microcomputer cut out background light (210) and on-screen displays.Afterwards, because the light that sends from fluorescent tube is by the polarisation pipe, image is output.Figure 10 is the shape of Fig. 9 during from the top view liquid crystal display equipment screen.In Fig. 9, if when power supply is in the OFF state, standby mode (Stand-by mode) conversion, background light (210) is returned to and location status shown in Figure 8 based on Screw (screw rod) (220) rotation that links to each other with Motor (motor) (200).
Below, in conjunction with Figure 11 a and Figure 11 b the operating process of the lcd projection systems in the invention process example two (500) is described in detail.
At first, Figure 11 a is standby mode (Stand-by mode) operational flowchart under power source ON (unlatching) state of the lcd projection systems in the invention process example two.
When power supply is in opening (stage 30), microcomputer (Micro computer) (Fig. 5 110) is opened background light, and on-screen displays is shown to (stage 31) on the screen, what can show fluorescent tube on the on-screen displays presets contents such as shut-in time.Afterwards, under the power-off situation before confirming above-mentioned electric power starting, judge whether cooling fan runs well within the predetermined time (stage 32).If when not running well ("No" in the stage 32), that just makes cooling fan running (stage 33) in the default time, afterwards, make fluorescent tube be in opening (stage 34).In the stage 32,, make fluorescent tube and cooling fan be in opening (stage 34) if cooling fan ran well ("Yes" in the stage 32) in the default time.Then, after background light and on-screen displays are closed, the screw rod (220) that links to each other with motor (200) is rotated, and make background light shift to LCD one side (stage 35), so far, during power source ON, finish the background light running program in the standby mode (Stand-by mode).
Figure 11 b is standby mode (Stand-by mode) operational flowchart under power supply OFF (disconnection) state of the lcd projection systems in the invention process example two.
When power supply is in OFF (closing) state (stage 40), microcomputer (Micro computer) (Fig. 5 110) makes fluorescent tube close (stage 41), then, motor is rotated, drive background light (210) and shift to the liquid crystal display equipment screen rear portion, make the above-mentioned background lamp open (stage 42), simultaneously, by above-mentioned background lamp output light, make on-screen displays ON (unlatching) (stage 43).What can show cooling fan on the on-screen displays presets contents such as the duration of runs.Whether afterwards, detect cooling fan runs well (stage 44) within the predetermined time.If by Preset Time ("No" in the stage 44), that does not just make cooling fan remain in operation.If cooling fan ran well ("Yes" in the stage 44) in the default time, make background light, on-screen displays and cooling fan be in closed condition (stage 45).So far, during power supply OFF, finish the background light running program in the standby mode (Stand-by mode).
Good effect of the present invention is: lcd projection systems, being one relates to when power supply is in the ON state, light source (Lamp) open period to the standby mode (Stand-by mode), by LED or background light, the on-screen displays that description is preset contents such as shut-in time is shown to the technical equipment on the screen.Therefore, by this function, the user just can understand and grasp the operating condition of optical projection system easily by being shown to on-screen displays on the screen.In addition,, the default unused time may be understood at an easy rate, uneasy sense can be effectively eliminated by on-screen displays.
Simultaneously, when power supply is in the OFF state, when even if the fluorescent tube in the standby mode (Stand-by mode) also is in the OFF state,, and the on-screen displays that shows the contents such as the default duration of runs of cooling fan is presented on the screen owing to cooling fan still ran well in the time of presetting.The user just can understand and grasp the operating condition of optical projection system easily by being shown to on-screen displays on the screen.Therefore, can eliminate under the situation that system has closed, the user also can think it is the misgivings that cooling fan breaks down and waits this class problem to be brought by mistake.
More than, in conjunction with enforcement example of the present invention, we have been described in detail major part of the present invention and function.Here it is pointed out that we be appreciated that in the limit that does not break away from this invention thought and scope to the change that the present invention did, but this should not to be considered be restriction to above-mentioned appended material object.
Claims (6)
- The LCD image display device of on-screen displays when 1, a kind of display lamp is closed is characterized in that:The microcomputer that the operation of LCD image display is controlled;Can respond to the control signal of microcomputer setting and the cooling device of running;Can respond to control signal that microcomputer sets and can be with the fluorescent tube of source reflection to the liquid crystal display equipment screen;Be arranged on the polarisation pipe of liquid crystal display equipment screen back;Be positioned at above-mentioned polarisation pipe illuminator on every side; And,The LCD image display that following characteristics is arranged:After above-mentioned microcomputer received situation from the signal of the power supply opening of outside, lamp tube light source started, and activates illuminator, and the on-screen displays of the current operation conditions of descriptive system is shown on the screen; When power supply before this closes, in running well in cooling device is fixed time shortly, just make cooling device entry into service in the time of setting.
- The LCD image display device of on-screen displays when 2, closing according to the described display lamp of claim 1, it is characterized in that: after above-mentioned microcomputer receives situation from the signal of the power-off of outside, lamp tube light source is closed, make illuminator be in out state, and the on-screen displays of the current operation conditions of descriptive system is shown on the screen, and cooling device is turned round in the time of setting.
- The LCD image display device of on-screen displays when 3, closing according to the described display lamp of claim 1, it is characterized in that: light emitting pixel is LED, fluorescent tube is preset time of closing etc. to be presented on the screen display.
- 4,, the LCD image display device of on-screen displays when closing according to the described display lamp of claim 1, it is characterized in that: illuminator is LED, fluorescent tube is preset time of closing etc. to be presented on the screen display.
- The LCD image display device of on-screen displays when 5, a kind of display lamp is closed is characterized in that:The microcomputer that the operation of LCD image display is controlled;Can respond to the control signal of microcomputer setting and the cooling device of running;Can respond to control signal that microcomputer sets and can be with the fluorescent tube of source reflection to the liquid crystal display equipment screen;Be arranged on the polarisation pipe of liquid crystal display equipment screen back;Between above-mentioned liquid crystal display equipment screen and above-mentioned polarisation pipe, link to each other with drive unit, by induction to the promptly fixed control signal of microcomputer, and the background light that moves, andAbove-mentioned microcomputer receives under the situation from the signal of the power supply opening of outside, lamp tube light source starts, and background light is opened, and the on-screen displays of the current operating conditions of descriptive system is shown on the screen, when power supply closes before this, in running well in cooling device is fixed time shortly, after having served as these and promptly fixing time, after background light and on-screen displays are closed, drive the equipment that links to each other with above-mentioned drive unit, make the above-mentioned background lamp shift to above-mentioned LCD on one side.
- The LCD image display device of on-screen displays when 6, closing according to the described display lamp of claim 5, it is characterized in that: after above-mentioned microcomputer receives signal from the power-off of outside, lamp tube light source is closed, the equipment that driving links to each other with above-mentioned drive unit, make the above-mentioned background lamp shift to above-mentioned LCD back, make the above-mentioned background lamp be in out state, and the on-screen displays of the current operation conditions of descriptive system is shown on the screen, and cooling device is turned round in the time of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020466 CN1690761A (en) | 2004-04-27 | 2004-04-27 | Liquid crystal display image display unit for screen frame display when the light source is shut off |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020466 CN1690761A (en) | 2004-04-27 | 2004-04-27 | Liquid crystal display image display unit for screen frame display when the light source is shut off |
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| CN1690761A true CN1690761A (en) | 2005-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444088B (en) * | 2005-11-30 | 2011-04-20 | 深圳Tcl新技术有限公司 | System and method for controlling light source electric power |
| CN115151854A (en) * | 2020-02-28 | 2022-10-04 | 麦克赛尔株式会社 | Head-up display device |
-
2004
- 2004-04-27 CN CN 200410020466 patent/CN1690761A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444088B (en) * | 2005-11-30 | 2011-04-20 | 深圳Tcl新技术有限公司 | System and method for controlling light source electric power |
| CN115151854A (en) * | 2020-02-28 | 2022-10-04 | 麦克赛尔株式会社 | Head-up display device |
| CN115151854B (en) * | 2020-02-28 | 2024-04-26 | 麦克赛尔株式会社 | Head-up display device |
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