JP2000280896A - Sun light control device for railroad car and rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To let passengers standing still and passengers taking seats be charac teristically in harmony in a railroad car, let the passengers standing still keep off the sun light for the passengers taking seats, however can take look at landscape through windows. SOLUTION: A liquid crystal panel 3 comprising a liquid crystal held by an orientation film, and also comprising a transparent electrode provided for applying voltage to the orientation film, is mounted to the inner side of each window for the railroad car so as to let the sun light be kept off, and the aforesaid panel 3 is formed out of a liquid crystal panel part 7 vertically divided in plural stages. In this case, a sun light controller 4 is provided for a place close to the window so as to let a position signal from the controller and a position signal for the liquid crystal panel part 7 divided so as to be formed into the plural stages, have one to one correspondence, so that control for shading the sun light for the liquid crystal panel part at the lower side of the correspondent liquid crystal panel, is executed based on the positional signal from the sun light controller 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sunlight control device for a railway vehicle.

[0002]

2. Description of the Related Art It has been proposed to control the sunlight of a vehicle using a liquid crystal panel.

Japanese Patent Application Laid-Open No. 6-297947 discloses a liquid crystal panel attached to the surface of a vehicle window glass, a voltage application circuit for applying a control voltage to the liquid crystal panel, and a liquid crystal panel installed in a driver's seat in a vehicle compartment. And a switch for the voltage application circuit, wherein the switch operates the switch to switch the liquid crystal panel between a light-shielding state and a light-transmitting state.

Japanese Patent Application Laid-Open No. Hei 6-16041 discloses a solar radiation detecting means for detecting the amount of solar radiation to a vehicle, and a method for determining the amount of light entering a vehicle compartment from a window of the vehicle based on the output of the solar radiation detecting means. Control means for calculating a control value for adjusting the control value; remote control means for controlling the operation of the control means by remote control; and A dimming device for a vehicle includes a dimming device that adjusts an amount of light based on an output of the control device.

Japanese Patent Application Laid-Open No. 7-215057 discloses a liquid crystal panel in which a memory type liquid crystal dispersion layer containing a polymer liquid crystal and a low molecular weight liquid crystal is sandwiched by a transparent resin substrate having a transparent conductive film provided on the liquid crystal dispersion layer side. While attaching to the entire inner surface of the window, an AC voltage and a DC voltage can be selectively applied to the transparent conductive film on both sides of the liquid crystal panel and switching means for turning on / off the voltage application is provided. The liquid crystal panel is transparent and the liquid crystal memory function keeps the transparent state even when the AC voltage is turned off. The liquid crystal panel to be attached to the entire inner surface of the window is divided so that the light shielding state is maintained, and an AC voltage and a DC voltage can be respectively applied to each divided liquid crystal panel. Vehicle solar control device is described that.

[0006]

In the case of a normal sunshade used in a railway vehicle, the sunshade descends from the top to the bottom. Therefore, if the occupant wants to shade, the sunshade must be lowered to the bottom. In this case, a person standing in the vehicle cannot see outside even though there is no need for a shade. The above-mentioned liquid crystal panel corresponds to a passenger car and the like, and harmony between a sitting person and a standing person in a railway car is not required.

SUMMARY OF THE INVENTION In view of the above, the present invention provides harmony between a sitting person and a standing person, and provides a awning for a sitting person and a window for a standing person outside a window. It is an object of the present invention to provide a sunlight control device for a railway vehicle capable of seeing a scene.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a liquid crystal panel attached to an inner surface of a window of a railway car by being attached or arranged in close proximity is of a split type, and each of the plurality of liquid crystal panel sections can be controlled independently. In addition, light shielding control can be performed sequentially from the lower liquid crystal panel section.

Specifically, the present invention provides the following devices.

According to the present invention, there is provided a sunshade for a railway vehicle in which a liquid crystal is sandwiched between alignment films, and a liquid crystal panel including a transparent electrode for applying a voltage to the alignment film is mounted on the inner surface of a window of the railroad vehicle to shield the sunshade. In the control device, the liquid crystal panel is constituted by a liquid crystal panel portion divided vertically into a plurality of stages, and a sunlight controller such as a passenger-side manual controller is provided in the vicinity of the window to be divided from the position signal. A plurality of liquid crystal panel sections and the corresponding position signals, and based on the position signal of the sunlight controller, the lower liquid crystal panel section from the corresponding liquid crystal panel section is controlled to shield light. The present invention provides a sunlight control device.

The present invention further relates to a railway vehicle in which the uppermost liquid crystal panel portion of the liquid crystal panel portion whose light shielding is controlled or some of the liquid crystal panel portions including the liquid crystal panel portion adjacent to the uppermost liquid crystal panel portion are controlled so that the light shielding density is reduced in gradation. The present invention provides a sunlight control device.

The present invention further provides a sunshine control device for a railway vehicle provided with a crew light-shielding controller for controlling the liquid crystal panel to shield light.

The present invention further provides a sunshine control device for a railway vehicle, which is provided with a sunshine sensor and performs shading control to turn off shading on condition that the sunshine cannot be continuously measured for a predetermined time or more.

The present invention further provides a sunlight control apparatus for a railway vehicle that performs light-shielding control in which light-shielding is turned off on condition that the predetermined time is set to 5 seconds and does not exceed 10,000 lx.

The present invention further provides a sunlight control apparatus for a railway vehicle in which the light-shielding control of the liquid crystal panel section is performed sequentially from the lower liquid crystal panel section.

According to the present invention, there is provided a railway vehicle in which a liquid crystal is sandwiched between alignment films, and a liquid crystal panel including a transparent electrode for applying a voltage to the alignment film is mounted on an inner surface of a window of the railway vehicle to shield sunlight. Provided is a railway vehicle provided with a liquid crystal panel that shields a predetermined lower portion of the window from light, a voltage application circuit that applies a voltage to the liquid crystal panel, and a control unit that controls the voltage application circuit.

The present invention further provides a railway vehicle in which the passenger-side manual controller is provided at a height of 800 to 1800 mm from the floor of the vehicle.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a state in which a liquid crystal panel 3 is attached to the inner surface of a window 2 of a railway vehicle 1. A passenger manual controller (passenger-side manual controller) 4 is provided in the vicinity of the window 2, and a sunlight sensor 5 receiving sunlight from the sun is provided outside the vehicle.
Is provided. As will be described later, the sunlight controller, for example, the passenger-side manual controller 4 is used to control the light shielding of the liquid crystal panel 3. A small sunlight sensor may be embedded in a part of the liquid crystal panel 3.

As shown in FIG. 2, a manual controller 41 for a crew member is further provided to control the liquid crystal panel 3 from light. In this case,
When the inside of the car is crowded, passengers
For example, when it is difficult to perform the control, the crew can perform the light blocking control as part of the service.

FIG. 2 shows a configuration for operating the liquid crystal panel 3. The passenger-side manual controller 4, that is, the passenger-side manual controller 4 operates the main controller 15, and the main controller 15
Controls the liquid crystal panel control unit 47, whereby the voltage application circuit 6 operates to apply a voltage to the liquid crystal panel 3. The liquid crystal panel 3 is divided into a plurality of liquid crystal panel units 7 in a vertical direction and has an independent configuration, and a voltage is applied by each voltage application circuit 6.

FIG. 3 shows the details of the liquid crystal panel 3. FIG.
As shown in (a), the liquid crystal panel 3 is divided into a plurality of appropriate liquid crystal panel sections 7. A passenger-side manual controller 4 is provided on the inner wall 8 of the vehicle close to the liquid crystal panel 3, that is, close to the window 2.

The passenger-side manual controller 4 is a slider 1 that slides through a slider panel 9 and a groove 10 provided therein.
The position of the slider 11, that is, the light shielding position signal, has a correspondence with the liquid crystal panel unit 7, that is, the position signal. Instead of being in the longitudinal direction, a round or digital display format may be used.

As shown in FIG. 3B, when the slider 11 is slid upward, the sliders 7 (1) to 7 (1) to 7 (6) including the sixth liquid crystal panel section 7 (6) from the lower side corresponding thereto are slid.
A voltage is applied to the liquid crystal panel section 7 (6), and light blocking control is performed by the main control section 15. In this case, the bottom 7
(1) may be a transmissive panel.

As shown in FIG. 5, the sitting person 21 is shielded from sunlight by the liquid crystal panel units 7 (1) to 7 (6) because the liquid crystal panel unit 7 blocks light from below. The standing person 22 can enjoy the outside view because of the window 2, that is, the transparent panel.

If the upper part of the window is not shaded, it is known that the user has arrived at the station or has passed the station when the user stops at or passes the station. Since the displayed station name display part is hung from the ceiling of the station, the station name can be confirmed from the opened window.

As shown in FIG. 4, the light blocking of the liquid crystal panel 3 can be controlled by a button 22 which part of the window is blocked. The button 22 is used to automatically control the light blocking by the sunlight sensor 5, to control the position of the window close to the vehicle floor, and to control the position of the window from the position close to the vehicle floor to the middle. And control of the height of the window from the position close to the floor of the vehicle to the high position.

When the button 22 is set to the automatic mode, when the sunshine direction cannot be continuously measured by the sunshine sensor 5 for a predetermined time, for example, 5 seconds or more, and when the amount of sunshine continues for 5 seconds. When it does not exceed 10,000 lx (lux), the liquid crystal panel 3 is controlled to be a translucent panel.

This is because the liquid crystal panel 3 is a light-shielding panel when a vehicle enters or exits a tunnel, travels through a group of high-rise buildings, or arrives at a station. An optimal in-vehicle environment can be provided.

In the present invention, the button 22 is controlled in four steps. However, the button 22 may be controlled from an automatic position to a high position in a slide-type stepless manner.

Further, it is preferable that the button 22 is arranged near a window in the vehicle.
By setting the distance in mm to 1000 mm, the position is desirable for the passenger to operate, and mischief such as a child can be prevented.

Further, in the embodiment, the controller 4 has been described as being in the vicinity of the side of the window. However, the controller 4 may be disposed near the ceiling of the vehicle of the window for controlling light shielding.

Although not shown, a single button is provided in the crew compartment to control all train cars or a plurality of buttons to control each car.

In FIG. 3B, the light is shielded in order from the lower liquid crystal panel by using the passenger-side manual controller 4 at the lower right. At this time, the light-shielding panel is located on the floor of the transparent panel. The light-shielding density may change gradually. By doing so, it feels natural and comfortable. In FIG. 3B, gradation control is performed for 7 (6) and 7 (5).
It goes without saying that gradation control may be performed for (8).

By using the sunlight signal from the sunlight sensor 5, light is blocked by a predetermined lower liquid crystal panel, and the upper liquid crystal panel is left as a transmissive panel or a panel is provided. You can also not put. By doing so, the light-shielding control is performed only on the lower liquid crystal panel portion, and a railway vehicle with low manufacturing cost can be provided.

FIG. 6 shows the function of the liquid crystal panel 3. The liquid crystal 31 is sandwiched between alignment films 32, and transparent electrodes 33 are arranged on both sides thereof, and a voltage is applied. Transparent electrode 33
A glass 34 and a polarizing plate 35 are further provided outside the device. Thus, the alignment film 32, the transparent electrode 33,
The glass 34 and the polarizing plate 35 are symmetrically arranged, and the liquid crystal can be provided with a memory function. These contents are already generally well known.

As shown in FIG. 7, a liquid crystal panel section 7 'may be used in which the liquid crystal panel 3 is divided vertically and horizontally to be independent. FIG. 7 shows a control method in the case where the crew performs the light blocking control of the liquid crystal panel 3. A crew information controller 41 is provided in a driver's room or a conductor's cabin (not shown) corresponding to the above-described passenger-side manual controller 4. The crew outputs a light blocking position signal and a control signal based on the sunlight signal from the sunlight sensor 5. The control signal applied from the crew information controller 41 is applied to the liquid crystal panels 3 and 3 'via the main control unit 15 and the matrix control voltage applying circuits 42 and 42'. Also in this case, it is preferable that the liquid crystal panel is controlled to be shielded in order from the lower side. In addition, control can be performed prior to the passenger-side manual controller 4. For example, light can be shielded by all liquid crystal panel units.

FIG. 8 shows the items described so far collectively.

FIG. 9 shows another embodiment in which a touch panel 44 is used in place of the passenger-side manual controller 4. The touch panel 44 is provided on the window 2 and has a function of a sunlight control panel. When a passenger touches (touches) the touch panel 44, the signal is recognized by the coordinate recognition circuit 45 and is input to the main control unit 15 as a position signal. As a result, the liquid crystal panel below the position recognized by the touch is shielded from light.

[0040]

As described above, according to the present invention, the sunlight control panel is provided, and the liquid crystal panel below the liquid crystal panel at the given position is provided by applying the light shielding position signal. Since the liquid crystal panel above it remains a transmissive panel, a person sitting in the seat in the vehicle is shielded from light, and a standing person can enjoy the outside view through the transmissive panel.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a liquid crystal panel control circuit diagram.

FIG. 3 is a configuration diagram showing the contents of an embodiment.

FIG. 4 is a block diagram of a light-shading density control panel.

FIG. 5 is an explanatory diagram illustrating advantages of the embodiment.

FIG. 6 is a typical liquid crystal configuration diagram.

FIG. 7 is a control circuit diagram for performing control by a crew.

FIG. 8 is an overall control circuit diagram.

FIG. 9 is a control circuit diagram according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Railway vehicle, 2 ... Window, 3 ... Liquid crystal panel, 4 ... Passenger side manual controller, 5 ... Sun sensor, 6 ... Voltage application circuit, 7
... Liquid crystal panel, 8 ... Inner wall, 11 ... Slider, 15 ...
Main control unit, 41 ... Crew information controller, 42, 42 '...
Matrix control voltage application circuit, 44 ... Touch panel,
45 ... Coordinate recognition circuit.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaru Oda 1-280 Higashi-Koikekubo, Kokubunji-shi, Tokyo Inside the Hitachi, Ltd.Design Research Institute (72) Inventor Maki Ito 1-280 Higashi-Koigabo, Kokubunji-shi, Tokyo Inside the Design Laboratory (72) Inventor Taiei Kubota 1-280 Higashi Koigakubo, Kokubunji-shi, Tokyo F-term in the Hitachi, Ltd. Design Laboratory (reference) 2H088 EA34 GA10 HA03 HA06 HA14 MA20

Claims (10)

[Claims] 1. A sunlight control device for a railway vehicle in which a liquid crystal is sandwiched between alignment films, and a liquid crystal panel including a transparent electrode for applying a voltage to the alignment film is mounted on an inner surface of a window of the railway vehicle to shield the sunlight. In the above, the liquid crystal panel is composed of a liquid crystal panel portion divided vertically into a plurality of stages, and a sunlight controller is provided on or close to the window,
Correlate the light-shielding position signal with the position signal of the liquid crystal panel unit of a plurality of stages configured by dividing, based on the position signal of the sunlight controller, the lower liquid crystal panel unit from the corresponding liquid crystal panel unit. A sunlight control device for a railway vehicle, wherein light control is performed. 2. The liquid crystal panel section on the uppermost side of the liquid crystal panel section controlled to be shielded or some of the liquid crystal panel sections including the liquid crystal panel section adjacent to the uppermost liquid crystal panel section are controlled so that the light shielding density is reduced in gradation. A sunlight control device for a railway vehicle, characterized in that: 3. The sunlight control device for a railway vehicle according to claim 1, further comprising a crew member light-shielding controller for controlling light-shielding of the liquid crystal panel unit. 4. The sunlight control device according to claim 1, wherein the sunlight control device comprises a slider panel and a slider that slides therethrough. 5. The sunlight control apparatus according to claim 1, wherein the sunlight controller is a touch panel, and a coordinate recognition circuit outputs a light shielding position signal by touching the touch panel. 6. A light-shielding control according to claim 1, wherein a light-shielding sensor is provided, and light-shielding is turned off on condition that the light is not continuously measured for a predetermined time or more. Sunshine control device for railway vehicles. 7. The sunlight control device for a railway vehicle according to claim 6, wherein the predetermined time is set to 5 seconds, and the light-shielding control for turning off the light-shielding is performed on condition that it does not exceed 10000 lx. 8. The sunlight control device for a railway vehicle according to claim 1, wherein the light-shielding control of the liquid crystal panel portion is performed sequentially from the lower liquid crystal panel portion. 9. A railway vehicle in which a liquid crystal is sandwiched by an alignment film and a liquid crystal panel including a transparent electrode for applying a voltage to the alignment film is mounted on an inner surface of a window of the railway vehicle to shield light from sunlight. A liquid crystal panel for shielding a predetermined lower part of the liquid crystal panel; a passenger-side manual controller for controlling the liquid crystal panel; a voltage application circuit for applying a voltage to the liquid crystal panel; and control for controlling the voltage application circuit. A railway vehicle characterized by having a part. 10. The passenger-side manual controller according to claim 9, wherein the passenger-side manual controller is at least 800 to 180
A railway vehicle provided at a height of 0 mm.