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JP2000193933A - Display device - Google Patents

Display device

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Publication number
JP2000193933A
JP2000193933A JP36865598A JP36865598A JP2000193933A JP 2000193933 A JP2000193933 A JP 2000193933A JP 36865598 A JP36865598 A JP 36865598A JP 36865598 A JP36865598 A JP 36865598A JP 2000193933 A JP2000193933 A JP 2000193933A
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Prior art keywords
display
light
surface
luminance
side
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JP36865598A
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Japanese (ja)
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Toshihiro Kitamura
寿博 北村
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Matsushita Electric Works Ltd
松下電工株式会社
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Abstract

PROBLEM TO BE SOLVED: To obtain the display device which can display a clear display picture both indoors and outdoors.
SOLUTION: The display device is equipped with a reflection type liquid crystal display part 1 which has one surface 11 and the other surface 12 and a reflecting plate 2 which is provided on the side of the surface 11 of the reflection type liquid crystal display part 1 and reflects irradiating light 21 from the side of the surface 12, and displays a display picture with the reflected light from the reflecting plate 2. In this case, an irradiating light emission tube 3 which emits the irradiating light 21 is provided on the side of the surface 12 and a light emission luminance control part 5 controls the light emission luminance of the irradiating light emission tube 3 according to the peripheral luminance detection signal outputted by a luminance detection part 4 detecting the peripheral luminance on the side of the surface 12.
COPYRIGHT: (C)2000,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、プログラマブルコントローラ又はパーソナルコンピュータに接続されて、 The present invention relates to is connected to a programmable controller or a personal computer,
画面切替、データ表示、又はデータ設定等をする表示画面を表示する表示装置に関するものである。 Screen switching, to a display device for displaying a display screen for data display, or the data setting and the like.

【0002】 [0002]

【従来の技術】この種の表示装置の従来例として、図6 As a conventional example of the prior art of this type display device, Fig. 6
に示す構成のものが存在する。 It is present having a configuration shown in. このものは、一面A1及び他面A2を有した反射型液晶表示部Aと、反射型液晶表示部Aの一面A1側へ設けられて他面A2側から照射された照射光B1を反射する反射板Bとを備え、反射板B This thing is reflected to the reflection and the reflection type liquid crystal display unit A having one surface A1 and the other surface A2, the reflective liquid crystal display unit illumination light B1 which is provided to one face A1 side of A is irradiated from the other surface A2 side and a plate B, the reflection plate B
からの反射光B2でもって表示画面を表示する。 With a reflected light B2 from and displays the display screen.

【0003】さらに詳しくは、照射光B1を反射板Bで反射しその反射光B2でもって表示画面を表示するので、照射光B1が照射光量の多い太陽光等であって他面A2側の周辺輝度が高く明るいとき、表示画面を見易く表示できるので一般に屋外で使用される。 [0003] More particularly, since the display of the display screen with and in the reflected light B2 reflected illumination light B1 by the reflector B, near the irradiation light B1 is a high sunlight of light quantity other surface A2 side when the luminance is high bright, generally used outdoors can be displayed easily see the display screen. しかしながら、屋内で使用されて他面A2側の周辺輝度が低く暗いとき表示画面を表示できない。 However, not view the display screen when it is dark is used peripheral luminance of the other face A2 side is low indoors.

【0004】また、この種の表示装置の別の従来例として、図7に示す構成のものが存在する。 [0004] As another conventional example of this type of display device, there are those of the configuration shown in FIG. このものは、一面C1及び他面C2を有した透過型液晶表示部Cと、透過型液晶表示部Cの一面C1側へ設けられて透過光D1を導光板D2を介して透過型液晶表示部Cに発光する透過光発光管Dを備え、透過光D1でもって表示画面を表示する。 The thing is, transmission type liquid crystal display unit C having one surface C1 and the other surface C2, a transmissive liquid crystal display unit transmitted light D1 provided to one surface C1 side of the C through the light guide plate D2 transmissive liquid crystal display unit with transmitted light emission tube D that emits C, and displays a display screen with a transmission light D1.

【0005】さらに詳しくは、導光板D2を介して一面C1側から照射された透過光D1でもって表示画面を表示するので、他面C2側の周辺輝度が低く暗いときとき表示画面を見易く表示でき、従って一般に屋内で使用される。 [0005] More specifically, since displays a display screen with at irradiated transmitted light D1 from one surface C1 side through the light guide plate D2, can display easily viewed display screen when when dark lower peripheral luminance of the other surface C2 side and thus it is generally used indoors. しかしながら、屋外の太陽光の強い場所で使用されて他面C2側の周辺輝度が高く明るいとき表示画面を表示できない。 However, not view the display screen when used with the other surface C2 side of the peripheral luminance is high bright strong place outdoor sunlight.

【0006】 [0006]

【発明が解決しようとする課題】上記した従来の表示装置では、屋外で反射型液晶表示部Aが設けられた機種を、屋内で透過型液晶表示部Cが設けられた別の機種をそれぞれ使用して、すなわち屋内外で使用する機種を変更することによって表示画面を表示できる。 In the conventional display device described above in which THE INVENTION An object you try solving] respectively using a model that reflective liquid crystal display unit A is provided outdoors, another type of transmission-type liquid crystal display unit C is provided indoors to, i.e., displays the display screen by changing the model to be used indoors and outdoors.

【0007】しかしながら、使用者が屋内及び屋外でそれぞれ機種を変更しなければならず、さらに開発者がプログラマブルコントローラ又はパーソナルコンピュータに接続されたシステムを構築するとき、別の機種へ再プログラミングしなければならない。 However, the user must change each model indoors and outdoors, and further when the developer builds a system connected to the programmable controller or a personal computer, to be reprogrammed to a different type not not. 従って、開発者は機種及び別の機種を管理する管理工数、並びに再プログラミングするためのプログラミング工数を必要としていた。 Therefore, developers have required a programming man-hours to manage man-hours, as well as re-programming to manage the model and another model.

【0008】本発明は、上記問題点に鑑みてなしたもので、その目的とするところは、屋内又は屋外のいづれであっても表示画面を明瞭に表示できる表示装置を提供することにある。 [0008] The present invention was made in view of the above problems, and an object is to provide a display device even Izure indoor or outdoor can be clearly displays the display screen.

【0009】 [0009]

【課題を解決するための手段】上記した課題を解決するために、請求項1記載のものは、一面及び他面を有した反射型液晶表示部と、反射型液晶表示部の一面側へ設けられて他面側から照射された照射光を反射する反射板とを備え、反射板からの反射光でもって表示画面を表示する表示装置において、前記照射光を発光する照射光発光管を前記反射型液晶表示部の他面側へ設け、他面側の周辺輝度を検知する輝度検知部から出力された周辺輝度検知信号に基づいて、照射光発光管の発光輝度を制御する発光輝度制御部が設けられた構成にしてある。 In order to solve the above problems SUMMARY OF THE INVENTION, those of claim 1, wherein a reflection type liquid crystal display unit having one surface and the other surface is provided to one face side of the reflection type liquid crystal display unit is a reflecting plate for reflecting the irradiation light irradiated from the other surface side, a display device for displaying a display screen with reflected light from the reflection plate, the reflected irradiation light emitting tube for emitting the irradiation light provided to mold the liquid crystal display unit of the other side, on the basis of the surrounding luminance detection signal output from the brightness detection unit that detects the surrounding brightness of the other side, the light emission luminance control section for controlling the emission luminance of the illumination light emitting tube It is the provided configuration.

【0010】請求項2記載のものは、請求項1記載のものにおいて、前記発光輝度制御部が前記照射光発光管の点灯周期を周期制御する構成にしてある。 [0010] those of claim 2, in those of claim 1, wherein the emission luminance control unit are a configuration of periodically controlling the lighting cycle of the irradiation light emitting tube.

【0011】請求項3記載のものは、請求項1記載のものにおいて、前記発光輝度制御部が、前記照射光発光管をオンオフ制御する構成にしてある。 [0011] those of claim 3, wherein, in those of claim 1, wherein the emission luminance control unit, are a configuration for turning on and off the said illumination light emitting tube.

【0012】請求項4記載のものは、一面及び他面を有した透過型液晶表示部と、透過型液晶表示部の一面側へ設けられて透過光を導光板を介して透過型液晶表示部に発光する透過光発光管とを備え、透過光でもって表示画面を表示する表示装置において、別の透過光を発光する別の透過光発光管を前記透過型液晶表示部の一面側へ設け、他面側の周辺輝度を検知する輝度検知部から出力された周辺輝度検知信号に基づいて、別の透過光発光管の発光輝度を制御する発光輝度制御部が設けられた構成にしてある。 [0012] What according to claim 4, one side and a transmission type liquid crystal display unit having a second surface, the transmissive transmissive through the light guide plate transmitting light provided to one side of the liquid crystal display unit LCD display unit and a transmitted light-emitting tube which emits light, a display device for displaying a display screen with transmitted light, providing a separate transmission light emitting tube for emitting the different transmitted light to one surface of the transmissive liquid crystal display unit, based on the surrounding luminance detection signal output from the brightness detection unit for detecting the other surface side of the peripheral luminance, light emission luminance control section for controlling the emission luminance of another of the transmitted light emission tube are a configuration provided.

【0013】請求項5記載のものは、請求項4記載のものにおいて、前記発光輝度制御部が前記別の透過光発光管をオンオフ制御する構成にしてある。 [0013] those of claim 5, wherein, in one of claim 4, wherein the emission luminance control unit are a configuration for turning on and off the said further transmitted light emission tube.

【0014】 [0014]

【発明の実施の形態】本発明の第1実施形態を図1及び図2に基づいて以下に説明する。 The first embodiment of the embodiment of the present invention with reference to FIGS described below.

【0015】1は反射型液晶表示部で、一面11及び他面12を有して、2枚の透明電極の間に挟んだ液晶の分子配列を電界を加えることによって制御して、光学的特性を変化させることによって文字又は画像等からなる表示画面を表示する。 [0015] 1 in the reflective type liquid crystal display unit, controlled by applying an electric field to a first surface 11 and the other surface 12, the liquid crystal molecular alignment is sandwiched between two transparent electrodes, the optical properties displaying a display screen consisting of text or images, etc. by changing the.

【0016】2は反射板で、鏡面に研磨された例えば金属板により、反射型液晶表示部1の一面11側へ設けられ、他面12側から照射された照射光21を反射型液晶表示部1へ向かって反射して、その反射光でもって反射型液晶表示部1に表示画面を表示させる。 [0016] 2 in the reflective plate, for example by a metal plate which is polished to a mirror, a reflection type provided to the liquid crystal one face 11 side of the display unit 1, the reflective liquid crystal display unit of the irradiation light 21 emitted from the other surface 12 side It is reflected toward the 1, and displays the display screen on the reflective liquid crystal display unit 1 with its reflected light.

【0017】3は照射光発光管で、冷極陰極管により、 [0017] 3 in the irradiation light emitting tube, by Hiyakyoku cathode tube,
反射型液晶表示部1の他面12側における両端部にそれぞれ設けられ、所定の点灯周期(点灯周波数)で点滅して照射光21を反射型液晶表示部1の他面12側へ向かって発光する。 Respectively provided at both end portions in the other surface 12 side of the reflection type liquid crystal display unit 1, flashing light emission toward the irradiation light 21 to the other surface 12 side of the reflection type liquid crystal display unit 1 at a predetermined lighting cycle (lighting frequency) to.

【0018】4は輝度検知部で、輝度を検知するセンサであり、反射型液晶表示部1の他面12側における略上端中央部に設けられて、他面12側の周辺輝度、すなわち他面12側における明るさを検知してその周辺輝度に対応した周辺輝度検知信号41を出力する。 [0018] 4 at a luminance detecting portion, a sensor for detecting the brightness, disposed substantially upper central portion of the other surface 12 side of the reflection type liquid crystal display unit 1, the other surface 12 side of the peripheral luminance, i.e. other surface by detecting the brightness in the 12-side outputs the surrounding luminance detection signal 41 corresponding to the peripheral luminance.

【0019】5は発光輝度制御部で、両照射光発光管3,3及び輝度検知部4に接続されて、輝度検知部4から出力された周辺輝度検知信号41に基づいて、照射光発光管3をスイッチング制御し照射光発光管3の点灯周期を周期制御して、照射光21の発光輝度を制御する。 [0019] 5 is a light emission luminance control unit, is connected to both the irradiation light emitting tube 3, 3 and the brightness detection unit 4, based on the surrounding luminance detection signal 41 outputted from the luminance detection unit 4, irradiation light emission tube 3 lighting period of the switching control irradiated light emission tube 3 and cycle control, and controls the emission luminance of the illumination light 21.

【0020】ケース6は開口部を設け、その開口部に反射型液晶表示部1を露出した状態で配置されて、反射型液晶表示部1の他面12側外方から照射光21が入射される。 [0020] Case 6 is an opening, is arranged in a state of exposing the reflective liquid crystal display unit 1 in the opening, the irradiation light 21 is incident from the other surface 12 side outside of the reflective liquid crystal display unit 1 that.

【0021】このものの動作を図1及び図2に基づいて説明する。 [0021] be described with reference to operation of the ones in FIGS. 輝度検知部4は図2(a)に示すように、他面12側の周辺輝度を検知して、その周辺輝度に比例した周辺輝度検知信号41を出力する。 Brightness detecting portion 4, as shown in FIG. 2 (a), by detecting the surrounding brightness of the other surface 12 side, and outputs the surrounding luminance detection signal 41 proportional to the surrounding brightness. そして、発光輝度制御部5は周辺輝度検知信号41に基づいて、照射光発光管3の点灯周期を周期制御して照射光21の発光輝度を、図2(b)に示すように、周辺輝度が高くなるほど低くなるよう、また周辺輝度が低くなるほど高くなるよう制御する。 The emission luminance control section 5 based on the surrounding luminance detection signal 41, the emission luminance of cycle control to irradiation light 21 lighting period of the irradiation light emitting tube 3, as shown in FIG. 2 (b), the peripheral brightness as it is more increased low, controlled so that the peripheral luminance becomes higher as the lower.

【0022】従って、屋内に設置されて他面12側の周辺輝度が低く暗いとき、照射光発光管3が高い発光輝度で照射光21を他面12側へ向かって発光し、反射板2 [0022] Thus, when being in a dark lower peripheral luminance of the other surface 12 side is installed indoors, and emission toward the irradiation light 21 to the other surface 12 side is higher irradiation light emission tube 3 emission brightness, the reflecting plate 2
が照射光発光管3からの照射光21を反射型液晶表示部1の一面へ反射し、反射型液晶表示部1が反射板2からの反射光でもって表示画面を表示する。 There reflects irradiation light 21 from the illumination light emitting tube 3 to one surface of the reflective liquid crystal display unit 1, the reflective liquid crystal display unit 1 displays a display screen with reflected light from the reflecting plate 2. また、屋外に設置されて他面12側の周辺輝度が高く明るいとき、照射光発光管3が低い発光輝度で照射光21を他面12側へ向かって発光し、反射板2が照射光発光管3からの照射光21及び外方からの照射光21を一面へ反射し、反射型液晶表示部1が反射板2からの反射光でもって表示画面を表示する。 Also, when installed outdoors other surface 12 side of the peripheral luminance is high bright, emits light toward the irradiation light 21 to the other surface 12 side is low irradiation light emission tube 3 emission brightness, the reflecting plate 2 is irradiation light emission the irradiation light 21 from the illumination light 21 and outward from the tube 3 is reflected to one side, the reflective liquid crystal display unit 1 displays a display screen with reflected light from the reflecting plate 2.

【0023】かかる第1実施形態の表示装置にあっては、上記したように、照射光21を照射する照射光発光管3を反射型液晶表示部1の他面12側へ設け、照射光発光管3の発光輝度を制御する発光輝度制御部5が設けられたから、他面12側の周辺輝度が低く暗いとき、発光輝度制御部5が輝度検知部4から出力された周辺輝度検知信号41に基づいて照射光発光管3の発光輝度を高くして、屋内又は屋外のいづれであっても一つの機種でもって表示画面を明瞭に表示するので、2機種を管理する管理工数及び別機種へ再プログラミングするためのプログラミング工数を削減することができる。 [0023] In the display device of according to the first embodiment, as described above, the illumination light emitting tube 3 for irradiating irradiation light 21 provided to the other surface 12 side of the reflection type liquid crystal display unit 1, the irradiation light emission since light emission luminance control unit 5 for controlling the light emission luminance of the tube 3 is provided, when it is dark lower peripheral luminance of the other surface 12 side, the surrounding luminance detection signal 41 emission luminance control unit 5 is output from the luminance detecting section 4 based by increasing the emission intensity of the illumination light emitting tube 3, because clearly displays the display screen with even Izure indoor or outdoor one model, re to the management steps and another model for managing two models it is possible to reduce the programming effort for programming.

【0024】また、発光輝度制御部5が照射光発光管3 Further, emission luminance control unit 5 is irradiation light emission tube 3
の点灯周期を周期制御するから、照射光発光管3の発光輝度を精度よく制御することができる。 Since periodically controls the lighting period, it is possible to accurately control the emission luminance of the illumination light emitting tube 3.

【0025】本発明の第2実施形態を図3に基づいて以下に説明する。 [0025] The second embodiment of the present invention will be described below with reference to FIG. なお、第2実施形態では第1実施形態と異なる機能について述べることとし、第1実施形態と実質的に同一機能を有する部材については、同一符号を付して説明を省略する。 In the second embodiment and to describe different functions from the first embodiment, members having substantially the same functions as in the first embodiment, its description is omitted with the same reference numerals.

【0026】第2実施形態では、発光輝度制御部5が照射光発光管3を周期制御ではなく、オンオフ制御して発光輝度を制御する。 [0026] In the second embodiment, light emission luminance control unit 5 is not a period controls the illumination light emitting tube 3, to control the light emission luminance and off control.

【0027】このものの動作を説明する。 [0027] explaining the operation of this thing. 図3(a)に示すように、輝度検知部4は他面12側の周辺輝度を検知して、その周辺輝度が予め設定された所定輝度αと比較して高いときH信号、低いときL信号からなる周辺輝度検知信号41を出力する。 As shown in FIG. 3 (a), the brightness detection unit 4 detects the surrounding brightness of the other surface 12 side, H signal when the surrounding brightness is higher than the predetermined luminance α which is set in advance, when a low L and it outputs the surrounding luminance detection signal 41 and a signal. 図3(b)に示すように発光輝度制御部5は周辺輝度検知信号41に基づいて、照射光発光管3がH信号及びL信号のときそれぞれオフ及びオンするよう、照射光発光管3をオンオフ制御して照射光21の発光輝度を制御する。 The emission luminance control unit 5 as shown in FIG. 3 (b) based on the surrounding luminance detection signal 41, so that the irradiation light emission tube 3 respectively off and on when the H signal and L signal, the irradiation light emission tube 3 off control to control the light emission luminance of the illumination light 21. すなわち、照射光発光管3は周辺輝度が所定輝度αより高いとき消灯するよう、また所定輝度αより低いとき点灯するよう発光輝度を制御される。 That is, the irradiation light emission tube 3 so as to turn off when surrounding luminance is higher than a predetermined luminance alpha, being controlled emission brightness to illuminate when less than the predetermined brightness alpha.

【0028】従って、屋内に設置されて反射型液晶表示部1他面12側の周辺輝度が低く暗いとき、照射光発光管3が点灯して高い発光輝度で照射光21を他面12側へ向かって発光し、反射板2が照射光発光管3からの照射光21を一面11へ反射し、反射型液晶表示部1が反射板2からの反射光でもって表示画面を表示する。 [0028] Therefore, when the dark lower installed in the peripheral brightness of the reflective liquid crystal display unit 1 other surface 12 side indoors, the irradiation light 21 to the other surface 12 side with high emission brightness illumination light emitting tube 3 is lit towards emits light, the reflection plate 2 is reflected irradiation light 21 from the illumination light emitting tube 3 to the first surface 11, the reflective liquid crystal display unit 1 displays a display screen with reflected light from the reflecting plate 2. また、屋外に設置されて他面12側の周辺輝度が高く明るいとき照射光発光管3が消灯し、反射板2が外方からの照射光21のみを一面11へ反射して、反射型液晶表示部1が反射板2からの反射光でもって表示画面を表示する。 Also, is installed outdoors when the peripheral luminance of the other surface 12 side is higher brighter illumination light emitting tube 3 is turned off, the reflection plate 2 is reflected only irradiation light 21 from the outside to one side 11, the reflection type liquid crystal display unit 1 displays a display screen with reflected light from the reflecting plate 2.

【0029】かかる第2実施形態の表示装置にあっては、上記したように、発光輝度制御部5が照射光発光管3をオンオフ制御するから、照射光発光管3の発光輝度を簡単な構成で制御することができる。 [0029] Such In the display device of the second embodiment, as described above, since the emission luminance control section 5 is for turning on and off the illumination light emitting tube 3, a simple and light emission luminance of the illumination light emitting tube 3 constituting it can be controlled in.

【0030】本発明の第3実施形態を図4及び図5に基づいて以下に説明する。 [0030] The third embodiment of the present invention will be described below with reference to FIGS. なお、第3実施形態では第1実施形態と異なる機能について述べることとし、第1実施形態と実質的に同一機能を有する部材については、同一符号を付して説明を省略する。 In the third embodiment and to describe different functions from the first embodiment, members having substantially the same functions as in the first embodiment, its description is omitted with the same reference numerals.

【0031】7は透過型液晶表示部で、一面71及び他面72を有して、2枚の透明電極の間に挟んだ液晶の分子配列を電界を加えることによって制御して、光学的特性を変化させることによって文字又は画像等からなる表示画面を表示する。 [0031] 7 is a transmission type liquid crystal display unit, controlled by applying an electric field to a first surface 71 and the other surface 72, the liquid crystal molecular alignment is sandwiched between two transparent electrodes, the optical properties displaying a display screen consisting of text or images, etc. by changing the.

【0032】8は第1透過光発光管で、冷極陰極管により、透過型液晶表示部7の一面71側における両端部にそれぞれ設けられて、第1透過光81を導光板82を介して透過型液晶表示部7に発光する。 [0032] 8 in the first transmitted light emitting tube, by Hiyakyoku cathode tube, respectively provided at both end portions of one surface 71 side of the transmissive liquid crystal display unit 7, the first transmitted light 81 through the light guide plate 82 emitting transmission type liquid crystal display unit 7.

【0033】9は第2透過光発光管で、冷極陰極管により、透過型液晶表示部7の一面71側における両端部に第1透過光発光管8に隣接した状態でそれぞれ設けられて、第2透過光91を導光板82を介して透過型液晶表示部7に発光する。 [0033] 9 in the second transmitted light emitting tube, by Hiyakyoku cathode tube, respectively provided in a state adjacent to the first transmitted light emitting tube 8 at both end portions in one surface 71 side of the transmissive liquid crystal display unit 7, the second transmitted light 91 through the light guide plate 82 emits the transmission type liquid crystal display unit 7.

【0034】発光輝度制御部5は、輝度検知部4及び両第2透過光発光管9,9にそれぞれ接続されて、輝度検知部4から出力された周辺輝度検知信号41に基づいて第2透過光発光管9をオンオフ制御して、その第2透過光発光管9の発光輝度を制御する。 [0034] The light emission luminance control unit 5, is connected to the luminance detecting portion 4 and both the second transmitted light emitting tube 9,9, the second transmission based on the surrounding luminance detection signal 41 outputted from the luminance detecting section 4 by turning on and off the light emitting tube 9, to control the emission luminance of the second transmitted light emitting tube 9.

【0035】このものの動作を説明する。 [0035] explaining the operation of this thing. 図5(a)に示すように、輝度検知部4は透過型液晶表示部7の他面12側の周辺輝度を検知して、その周辺輝度が所定輝度αと比較して高いときH信号、低いときL信号からなる周辺輝度検知信号41を出力する。 As shown in FIG. 5 (a), the brightness detection unit 4 detects the other surface 12 side of the peripheral luminance of the transmissive liquid crystal display unit 7, H signal when the surrounding brightness is higher than the predetermined luminance alpha, and outputs the surrounding luminance detection signal 41 consisting of a lower case L signal. 図5(b)に示すように、発光輝度制御部5は周辺輝度検知信号41に基づいて、第2透過光発光管9がH信号及びL信号のときそれぞれオン及びオフするよう、第2透過光発光管9をオンオフ制御して第2透過光91の発光輝度を制御する。 As shown in FIG. 5 (b), the emission luminance control section 5 based on the surrounding luminance detection signal 41, so that second transmitted light emitting tube 9 is respectively turned on and off when the H signal and L signal, the second transmission controlling the emission luminance of the second transmitted light 91 by turning on and off the light emitting tube 9.
すなわち、第2透過光発光管9は周辺輝度が所定輝度α That is, the second transmitted light emitting tube 9 has peripheral luminance predetermined luminance α
より高いとき点灯するよう、また所定輝度αより低いとき消灯するよう第2透過光91の発光輝度を制御される。 As lights when higher and being controlled emission luminance of the second transmitted light 91 to turn off when lower than the predetermined luminance alpha.

【0036】従って、屋内に設置されて他面72側の周辺輝度が低く暗いとき、第2透過光発光管9が消灯し、 [0036] Therefore, when has been dark lower peripheral luminance of the other surface 72 side located indoors, the second transmitted light emitting tube 9 is turned off,
透過型液晶表示部7が第1透過光発光管8からの第1透過光81のみでもって表示画面を表示する。 Transmission type liquid crystal display unit 7 with only the first transmitted light 81 from the first transmitted light emitting tube 8 displays a display screen. また、屋外に設置されて他面72側の周辺輝度が高く明るいとき第2透過光発光管9が点灯し、反射型液晶表示部1が第1 Also, is installed outdoors second transmitted light emitting tube 9 when surrounding luminance of the other surface 72 side is high bright lights, the reflective liquid crystal display unit 1 first
透過光発光管8からの第1透過光81、及び第2透過光発光管9からの第2透過光91でもって明瞭に表示画面を表示する。 With the second transmitted light 91 from the first transmitted light 81, and the second transmitted light emission tube 9 from the transmitted light emitting tube 8 displays a clearly display screen.

【0037】かかる第3実施形態の表示装置にあっては、上記したように、第2透過光91を発光する第2透過光発光管9を透過型液晶表示部7の一面71側へ設け、第2透過光発光管9の発光輝度を制御する発光輝度制御部5が設けられたから、他面72側の周辺輝度が高く明るいとき、発光輝度制御部5が輝度検知部4から出力された周辺輝度検知信号41に基づいて第2透過光発光管9の発光輝度を高くして、屋内又は屋外のいづれであっても一つの機種でもって表示画面を明瞭に表示するので、2機種を管理する管理工数及び別機種へ再プログラミングするためのプログラミング工数を削減することができる。 [0037] In the display device of according to the third embodiment, as described above, providing the second transmitted light emitting tube 9 for emitting second transmitted light 91 to one face 71 side of the transmissive liquid crystal display unit 7, since light emission luminance control unit 5 is provided for controlling the emission luminance of the second transmitted light emitting tube 9, when the peripheral luminance of the other surface 72 side is high bright, near the light emission luminance control unit 5 is output from the luminance detecting section 4 by increasing the light emission luminance of the second transmitted light emitting tube 9 on the basis of the luminance detection signal 41, so clearly it displays a display screen with a single model even Izure indoor or outdoor manages two models it is possible to reduce the programming effort for re-programming to the management man-hours and a different model.

【0038】また、発光輝度制御部5が第2透過光発光管9をオンオフ制御するから、第2透過光発光管9の発光輝度を簡単な構成で制御することができる。 Further, since the emission luminance control section 5 is for turning on and off the second transmitted light emitting tube 9, it is possible to control the light emission luminance of the second transmitted light emitting tube 9 with a simple structure.

【0039】 [0039]

【発明の効果】請求項1記載のものは、照射光を照射する照射光発光管を反射型液晶表示部の他面側へ設け、照射光発光管の発光輝度を制御する発光輝度制御部が設けられたから、他面側の周辺輝度が低く暗いとき、発光輝度制御部が輝度検知部から出力された周辺輝度検知信号に基づいて照射光発光管の発光輝度を高くして、屋内又は屋外のいづれであっても一つの機種でもって表示画面を明瞭に表示するので、2機種を管理する管理工数及び別機種へ再プログラミングするためのプログラミング工数を削減することができる。 Effect of the Invention ones according to claim 1 is a radiation light emission tube for irradiating illumination light provided to the other surface side of the reflective liquid crystal display unit, the light emission luminance control section for controlling the emission luminance of the illumination light emitting tube because provided, the other side when the dark lower peripheral luminance, light emission luminance control section to increase the emission intensity of the illumination light emitting tube on the basis of the surrounding luminance detection signal output from the brightness detection unit, indoor or outdoor because clearly displays a display screen with even Izure one model, it is possible to reduce the programming steps for reprogramming the management steps and another model for managing two models.

【0040】請求項2記載のものは、請求項1記載のものの効果に加えて、発光輝度制御部が照射光発光管の点灯周期を周期制御するから、照射光発光管の発光輝度を精度よく制御することができる。 [0040] those of claim 2, wherein, in addition to the effects of those of claim 1, since the light emission luminance control section periodically controls the lighting cycle of the irradiation light emission tube, accurately the emission luminance of the illumination light emitting tube it is possible to control.

【0041】請求項3記載のものは、請求項1記載のものの効果に加えて、発光輝度制御部が照射光発光管をオンオフ制御するから、照射光発光管の発光輝度を簡単な構成で制御することができる。 [0041] What the third aspect, in addition to the effects of those of claim 1, since the light emission luminance control section for turning on and off the illumination light emission tube, controls the light emission intensity of the illumination light emitting tube with a simple structure can do.

【0042】請求項4記載のものは、別の透過光を発光する別の透過光発光管を透過型液晶表示部の一面側へ設け、別の透過光発光管の発光輝度を制御する発光輝度制御部が設けられたから、他面側の周辺輝度が高く明るいとき、発光輝度制御部が輝度検知部から出力された周辺輝度検知信号に基づいて別の透過光発光管の発光輝度を高くして、屋内又は屋外のいづれであっても一つの機種でもって表示画面を明瞭に表示するので、2機種を管理する管理工数及び別機種へ再プログラミングするためのプログラミング工数を削減することができる。 [0042] What according to claim 4, another transmitted light emitting tube for emitting the different transmitted light provided to one surface of the transmissive liquid crystal display unit, the light emission luminance of controlling the emission luminance of another of the transmitted light emission tube since the control unit is provided, when the other surface side of the peripheral luminance is high bright, by increasing the light emission luminance of another of the transmitted light emitting tube on the basis of the surrounding luminance detection signal emission luminance control unit is output from the luminance detecting section since clearly displays the display screen with even Izure indoor or outdoor one model, it is possible to reduce the programming steps for reprogramming the management steps and another model for managing two models.

【0043】請求項5記載のものは、請求項4記載のものの効果に加えて、発光輝度制御部が別の透過光発光管をオンオフ制御するから、別の透過光発光管の発光輝度を簡単な構成で制御することができる。 [0043] What according to claim 5, in addition to the effects of those according to claim 4, since the emission luminance control section for turning on and off the different transmitted light emission tube, easy the emission luminance of another of the transmitted light emission tube it can be controlled by Do configuration.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1実施形態を示す正断面図である。 1 is a front sectional view showing a first embodiment of the present invention.

【図2】同上の(a)は周辺輝度検知信号の出力値と周辺輝度との相関図、(b)は周辺輝度と発光輝度との相関図である。 [Figure 2] of the same (a) is a correlation diagram between the output value and the peripheral luminance of the surrounding luminance detection signal is a correlation diagram (b) and the peripheral luminance and light emission luminance.

【図3】本発明の第2実施形態を示す(a)は周辺輝度検知信号の出力図、(b)は周辺輝度検知信号の出力に対応した照射光発光管のオンオフ動作図である。 3 shows a second embodiment of the present invention (a) is output Figure near luminance detection signal is off operation diagram of the illumination light emitting tube corresponding to the output of the (b) is near the luminance detection signal.

【図4】本発明の第3実施形態を示す正断面図である。 4 is a front sectional view showing a third embodiment of the present invention.

【図5】同上の(a)は周辺輝度検知信号の出力図、 5 (a) is output Figure near luminance detection signal of the same,
(b)は周辺輝度検知信号の出力に対応した第2透過光発光管のオンオフ動作図である。 (B) is a on-off operation diagram of the second transmitted light emitting tube corresponding to the output of the surrounding luminance detection signal.

【図6】従来例を示す正断面図である。 6 is a front sectional view showing a conventional example.

【図7】別の従来例を示す正断面図である。 7 is a front sectional view showing a different conventional example.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 反射型液晶表示部 11 一面 12 他面 2 反射板 21 照射光 3 照射光発光管 4 輝度検知部 41 周辺輝度検知信号 5 発光輝度制御部 7 透過型液晶表示部 71 一面 72 他面 8 第1透過光発光管(透過光発光管) 81 第1透過光(透過光) 82 導光板 9 第2透過光発光管(別の透過光発光管) 91 第2透過光(別の透過光) 1 the reflective liquid crystal display unit 11 one surface 12 other surface 2 reflector 21 irradiates light 3 irradiated light emitting tube 4 luminance detection portion 41 surrounding luminance detection signal 5 emission luminance control unit 7 transmissive liquid crystal display unit 71 one surface 72 other surface 8 first transmitted light emitting tube (transmitted light emission tube) 81 first transmitted light (transmitted light) 82 light guide plate 9 second transmitted light emitting tube (another transmitted light emission tube) 91 second transmitted light (different transmitted light)

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2H093 NC44 NC45 NC55 NC90 ND08 ND58 NE07 NE10 NG01 5C006 AF63 BB28 BB29 BF38 EA01 FA54 5C094 AA07 AA45 AA54 AA55 BA43 DB10 ED01 ED11 GA10 HA01 5G435 AA01 BB12 BB15 BB16 DD11 DD13 EE22 EE25 FF03 FF08 FF12 LL19 ────────────────────────────────────────────────── ─── front page of continued F-term (reference) 2H093 NC44 NC45 NC55 NC90 ND08 ND58 NE07 NE10 NG01 5C006 AF63 BB28 BB29 BF38 EA01 FA54 5C094 AA07 AA45 AA54 AA55 BA43 DB10 ED01 ED11 GA10 HA01 5G435 AA01 BB12 BB15 BB16 DD11 DD13 EE22 EE25 FF03 FF08 FF12 LL19

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 一面及び他面を有した反射型液晶表示部と、反射型液晶表示部の一面側へ設けられて他面側から照射された照射光を反射する反射板とを備え、反射板からの反射光でもって表示画面を表示する表示装置において、 前記照射光を発光する照射光発光管を前記反射型液晶表示部の他面側へ設け、他面側の周辺輝度を検知する輝度検知部から出力された周辺輝度検知信号に基づいて、照射光発光管の発光輝度を制御する発光輝度制御部が設けられたことを特徴とする表示装置。 With a 1. A reflective liquid crystal display unit having one surface and the other surface, and a reflecting plate provided to one face side of the reflection type liquid crystal display unit for reflecting irradiated light irradiated from the other side, reflected in the display device for displaying a display screen with reflected light from the plate, the provided illumination light emitting tube for emitting the illumination light to the other surface side of the reflective liquid crystal display unit, the luminance for detecting the surrounding brightness of the other side based on the surrounding luminance detection signal output from the detection unit, a display device characterized by light emission luminance control unit is provided for controlling the emission luminance of the illumination light emitting tube.
  2. 【請求項2】 前記発光輝度制御部が、前記照射光発光管の点灯周期を周期制御してなることを特徴とする請求項1記載の表示装置。 Wherein said emission luminance control unit, a display device according to claim 1, characterized in that the lighting cycle of the irradiation light emitting tube and cycle control.
  3. 【請求項3】 前記発光輝度制御部が、前記照射光発光管をオンオフ制御してなることを特徴とする請求項1記載の表示装置。 Wherein the light emission luminance control unit, a display device according to claim 1, characterized by being on-off control the irradiation light emitting tube.
  4. 【請求項4】 一面及び他面を有した透過型液晶表示部と、透過型液晶表示部の一面側へ設けられて透過光を導光板を介して透過型液晶表示部に発光する透過光発光管とを備え、透過光でもって表示画面を表示する表示装置において、 別の透過光を発光する別の透過光発光管を前記透過型液晶表示部の一面側へ設け、他面側の周辺輝度を検知する輝度検知部から出力された周辺輝度検知信号に基づいて、別の透過光発光管の発光輝度を制御する発光輝度制御部が設けられたことを特徴とする表示装置。 4. A transmission type liquid crystal display unit having one surface and the other surface, the transmitted light emission emits light transmission type liquid crystal display unit through the light guide plate transmitting light provided to one side of the transmissive liquid crystal display unit a tube, a display device for displaying a display screen with transmitted light, providing a separate transmission light emitting tube for emitting the different transmitted light to one surface of the transmissive liquid crystal display unit, the other surface side of the peripheral luminance based on the surrounding luminance detection signal output from the brightness detection unit for detecting the display device characterized by light emission luminance control unit is provided for controlling the emission luminance of another of the transmitted light emission tube.
  5. 【請求項5】 前記発光輝度制御部が前記別の透過光発光管をオンオフ制御してなることを特徴とする請求項4 5. A method according to claim 4, wherein the emission luminance control unit is characterized by being obtained by turning on and off the said other of the transmitted light emission tube
    記載の表示装置。 The display device according.
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