JP2005097774A - Shield for helmet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shield for helmet, easy to read displayed information and equipped with a lightweight and highly transparent OLED( organic light-emitting diode ) with low power consumption. <P>SOLUTION: The shield 3 to be mounted on a helmet includes a transparent OLED 31 comprising transparent electrodes 54a and 54b made of a transparent electrically conductive material, a transparent organic layer 55 containing a light-emitting layer sandwiched between the transparent electrodes 54a and 54b and emitting light on applying a specified voltage between the transparent electrodes 54a and 54b and a transparent substrate 52 for forming the transparent electrodes 54a and 54b and the organic layer 55. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a helmet shield, and more particularly to a helmet shield provided with a transparent OLED (Organic Light Emitting Diode) capable of displaying information without obstructing the outside view.

  Generally, a display device used in a navigation system for guiding a driver of a vehicle such as an automobile is used while the driver of the vehicle is driving, so that the display device is in or near the driver's field of view. It is mounted on the vehicle body. However, it is difficult to mount a display device used for a navigation system on a vehicle body in a vehicle having a small space in front of the driver, such as a motorcycle or a snowmobile.

  In the vehicle display system described in Patent Document 1, the main windshield plate provided in a vehicle such as a motorcycle has a first combiner (reflecting plate) that reflects and displays the display image of the display, and the inclination is adjusted. A possible second combiner is provided. When the driver's head position is lowered, such as when traveling at high speed, the reflected image displayed by the first combiner is visually observed. On the other hand, when the position of the driver's head rises, such as when driving at low speed, the inclination of the second combiner is adjusted and the reflected image displayed by the second combiner is visually observed.

  In the helmet-mounted navigation device described in Patent Document 2, navigation information is transmitted from the motorcycle body to the helmet. In the helmet, the received signal is imaged by a display element such as an LCD (Liquid Crystal Display), which is irradiated by a light source such as a halogen lamp and projected onto the helmet combiner. As a result, the motorcycle driver can recognize the image formed as a virtual image in front of the field of view.

JP-A-9-39867 Japanese Patent Laid-Open No. 11-148837

  However, in the former prior art, when driving a vehicle such as a motorcycle, the posture of the driver and the position of the viewpoint frequently move, so that it is difficult to interpret the virtual image reflected from the display unit of the navigation system. There was a problem.

  Furthermore, in the latter prior art, since the signal received by the helmet is imaged and irradiated to the helmet combiner by the light source, the configuration becomes complicated, and there is a problem such as an increase in the weight of the helmet and a complicated device. there were. Furthermore, there is a problem that the power consumption of the apparatus increases with the complexity of the apparatus.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a helmet shield including a transparent OLED that is easy to read display information, is lightweight, has low power consumption, and has high transparency.

  In order to solve the above-described problems and achieve the object, a helmet shield according to the present invention includes a cathode and an anode made of a transparent conductive material between the cathode and the anode in the helmet shield attached to the helmet. A transparent organic layer including a light emitting layer that is sandwiched and emits light by applying a predetermined voltage between the cathode and the anode, and a transparent substrate for forming the cathode, the anode, and the organic layer, It has the transparent organic electroluminescent display part which becomes. Thereby, since the shield for helmets is provided with the transparent organic electroluminescent display part, it becomes possible to display information on a shield by simple structure. In addition, since the organic EL display unit consists of a transparent cathode, a transparent anode, a transparent organic layer, and a transparent substrate, even if the outside of the helmet is viewed through a shield equipped with the organic EL display unit, the recognition of the outside world is not disturbed. Absent. Furthermore, since the shield provided with the organic EL display unit is arranged in front of the helmet, it can be displayed on the organic EL display unit simply by changing the focus without changing the posture while keeping the line of sight facing forward. Information can be visually recognized.

  Moreover, the shield for helmets of this invention is a shield for helmets as described above, Comprising: The said transparent organic electroluminescent display part can be curved according to the shape of the shield for helmets, It is characterized by the above-mentioned. As a result, the transparent organic EL display unit can be attached to a curved helmet shield, and information can be displayed on the curved shield.

  The helmet shield according to the present invention is the helmet shield described above, wherein the helmet receives the information transmitted from the transmission unit installed in a place other than the helmet, and the organic And an EL display unit and a power supply unit for driving the receiving unit, wherein the transparent organic EL display unit displays information from the receiving unit. Thereby, the shield for helmets can display the information transmitted from a transmission part with a simple structure.

  The helmet shield according to the present invention is the helmet shield described above, wherein the transmitter is installed in a motorcycle body, a vehicle body, or clothes. Thereby, the shield for helmets can display the information transmitted from the main body of a motorcycle, the main body of an automobile, or clothes with a simple configuration.

  Further, the helmet shield of the present invention is the helmet shield described above, and the information from the receiving unit is a navigation information for guiding a route of the motorcycle and / or a traveling state of the motorcycle. It is characterized by including information. Thereby, the shield for helmets can display navigation information and motorcycle travel information with a simple configuration.

  The helmet shield according to the present invention is the helmet shield described above, wherein the transparent organic EL display unit further includes a prevention layer for preventing deterioration of the transparent organic EL display unit. . Thereby, the shield for helmets can display information with the transparent organic electroluminescence display part with the simple structure and excellent durability.

  Below, the example of the shield for helmets concerning the present invention is described in detail based on a drawing. In addition, this invention is not limited by this Example.

  FIG. 1 is a diagram for explaining the configuration of a helmet shield according to an embodiment of the present invention. In FIG. 1, the driver of the motorcycle 20 is wearing the helmet 10. The helmet 10 includes a shield 3 including a transparent organic EL display unit (hereinafter referred to as a transparent OLED (Organic Light Emitting Diode) 31) made of a transparent organic EL (Electro Luminescence), a radio receiver 4, and a battery 5. The motorcycle 20 includes a wireless transmitter 21.

  The shield 3 is made of, for example, a transparent plastic for windshield or ultraviolet protection mounted on the helmet 10, and includes a transparent OLED 31 that displays information from the wireless receiver 4. The transparent OLED 31 is composed of an organic layer 55 described later and two transparent electrodes 54a and 54b sandwiching the organic layer 55, and the entire transparent OLED 31 has a transparent or translucent configuration. Therefore, even if the outside of the helmet is viewed through the shield 3 including the transparent OLED 31, the view is not blocked. The transparent OLED 31 is in a transparent or translucent state even during light emission, and even when the outside of the helmet is viewed through the shield 3 provided with the transparent OLED 31 during light emission, the view is not blocked.

  The wireless receiver 4 is attached to the helmet 10 and is electrically connected to the transparent OLED 31 of the shield 3. The wireless receiver 4 receives information transmitted from the wireless transmitter 21 provided in the main body of the motorcycle 20 and sends the received information to the transparent OLED 31 of the shield 3.

  The battery 5 is electrically connected to the wireless receiver 4 and the transparent OLED 31 and drives the wireless receiver 4 and the transparent OLED 31. The wireless transmitter 21 is provided in the motorcycle 20 and transmits information to the wireless receiver 4. The wireless transmitter 21 acquires and stores map information, information on the position of the motorcycle 20, information on the traveling direction of the motorcycle 20, and the like, and extracts desired information from these information. Processed and transmitted to the wireless receiver 4. For example, information such as the traveling speed and the current position of the motorcycle 20 is transmitted from the wireless transmitter 21 to the wireless receiver 4.

  Note that the transmission / reception of information performed by the wireless receiver 4 and the wireless transmitter 21 may be performed by, for example, infrared rays or Bluetooth. The wireless transmitter 21 may include a navigation system for guiding the route of the motorcycle. Furthermore, the information transmission from the motorcycle 20 to the helmet 10 is not limited to the case where information is transmitted wirelessly, such as the wireless transmitter 21 and the wireless receiver 4, and may be configured to be wired.

  The map information includes a road map of a predetermined range where the motorcycle 20 may travel. The information on the position of the motorcycle 20 indicates the location where the motorcycle 20 is currently located by means of longitude and latitude etc. using a GPS (Global Positioning System) function (not shown) provided in the motorcycle 20. . The information on the traveling direction of the motorcycle 20 indicates the traveling state of the motorcycle 20. For example, the motorcycle 20 currently uses a speed sensor, a direction sensor, a yaw rate sensor (not shown), etc. provided in the motorcycle 20. It shows the direction of travel and the predicted travel direction in the future. The speed sensor detects the speed of the motorcycle 20, the direction sensor detects the traveling direction of the motorcycle 20, and the yaw rate sensor detects the angular speed of the motorcycle 20.

  FIG. 2 is a flowchart showing a procedure for displaying information by the helmet shield. The wireless transmitter 21 acquires various information using a GPS function, a speed sensor, a direction sensor, a yaw rate sensor, and the like (step S10). Then, the information and the map information stored in advance are processed into desired information, and this information is transmitted to the wireless receiver 4 (step S20). The wireless receiver 4 receives information from the wireless transmitter 21 (step S30) and sends it to the transparent OLED 31. The transparent OLED 31 displays this information (step S40), and the driver of the motorcycle 20 can recognize this information.

  FIG. 3 is a schematic diagram illustrating an example of a cross-sectional structure of a shield to which a transparent OLED is attached. A transparent OLED 31 made of a transparent OLED is surrounded by a sealing layer 51, and the transparent OLED 31 surrounded by the sealing layer 51 is disposed inside the helmet so as to contact the shield 3. The transparent OLED 31 is a thin film having a high visible light transmittance, and includes a substrate 52, a UV cut layer 53, a pair of transparent electrodes 54 a and 54 b, an organic layer 55, and an electron injection layer 56. The transparent OLED 31 is configured to display information by a full color dot matrix display.

  The substrate 52 is a film-like base for forming the UV cut layer 53, the transparent electrode 54, the organic layer 55, and the electron injection layer 56, and is made of a transparent plastic that can be bent. The UV cut layer 53 is a prevention layer that prevents transmission of ultraviolet light harmful to human eyes and light having a wavelength that degrades the organic layer 55. For example, a material that prevents transmission of light having a wavelength of 380 nm or less is used. Instead of the UV cut layer 53, a material such as polycarbonate may be bonded to the shield 3 to prevent the transmission of light having a predetermined wavelength. Further, the UV cut layer 53 may be further arranged between the substrate 52 and the sealing layer 51. As a result, it is possible to prevent the deterioration of the organic layer 55 caused by light incident from the substrate 52 side, which is the inside of the helmet 10.

  The transparent electrodes 54a and 54b are transparent electrodes formed of ITO (Indium Tin Oxide) made of an oxide of indium and tin, for example. Then, by applying a DC voltage between the transparent electrodes 54a and 54b, the organic layer 55 emits light, and information can be displayed.

  The transparent electrode 54 b is an anode and injects holes into the organic layer 55. The transparent electrode 54 a is a cathode and injects electrons into the organic layer 55 through the electron injection layer 56. The organic layer 55 is made of an organic material and includes a light emitting layer that emits light by recombination energy of electrons from the transparent electrode 54a and holes from the transparent electrode 54b. A configuration using a transparent inorganic material instead of the organic layer 55 may be employed.

  The electron injection layer 56 is disposed between the transparent electrode 54 a and the organic layer 55, and injects electrons from the transparent electrode 54 a into the organic layer 55. The electron injection layer 56 lowers the energy barrier for electron injection and enables efficient electron injection from the transparent electrode 54a to the organic layer 55. The electron injection layer 56 may be formed of an organic material or other materials.

  Moreover, it is good also as a structure which provided the positive hole injection layer (not shown) between the organic layer 55 and the transparent electrode 54b. By providing the hole injection layer, the energy barrier for hole injection is lowered, and hole injection from the transparent electrode 54b to the organic layer 55 can be performed efficiently. Note that the hole injection layer may be formed of an organic material or other materials.

  Furthermore, the organic layer 55 may have a configuration in which an electron transport layer (not shown) is provided between the light emitting layer and the electron injection layer. The electron transport layer sends electrons to the light emitting layer and suppresses movement of holes from the light emitting layer to the transparent electrode 54a. Thereby, recombination of holes and electrons in the organic layer 55 is promoted, and light emission in the organic layer 55 is efficiently performed. Note that the present invention is not limited to the configuration in which the electron transport layer is included in the organic layer 55, and the electron transport layer may be formed of a material other than the organic material.

  Further, the organic layer 55 may have a structure in which a hole transport layer (not shown) is provided between the light emitting layer and the hole injection layer. The hole transport layer sends holes to the light emitting layer and suppresses movement of electrons from the light emitting layer to the transparent electrode 54b. Thereby, recombination of holes and electrons in the organic layer 55 is promoted, and light emission in the organic layer 55 is efficiently performed. Note that the present invention is not limited to the case where the hole transport layer is included in the organic layer 55, and the hole transport layer may be formed of a material other than the organic material.

  Further, in order to prevent a short circuit in the organic layer 55 caused by the unevenness of the substrate 52, a buffer layer for smoothing the transparent electrode 54b is formed on the surface of the transparent electrode 54b on the side where the organic layer 55 is formed. It is good also as a provided structure. Thereby, the adhesiveness between the transparent electrode 54b and the organic layer 55 is improved, and the efficiency of hole injection from the transparent electrode 54b to the organic layer 55 is also increased.

  The sealing layer 51 is a prevention layer that is made of, for example, SiON, SiN, or UV curable resin and prevents deterioration of the transparent OLED 31 by preventing entry of gas such as oxygen or water from the outside. The sealing layer 51 is disposed so as to surround the entire transparent OLED 31. Note that the sealing layer 51 in contact with the UV cut layer 53 may be disposed outside the helmet 10. Further, when the shield 3 has a structure that does not allow a gas such as oxygen or water to pass therethrough, the portion of the sealing layer 51 that is in contact with the UV cut layer 53 may be omitted. Furthermore, the shield 3 and the entire transparent OLED 31 may be surrounded by the sealing layer 51. The sealing layer 51 protects the transparent OLED 31 by preventing temperature and scratches. Thereby, the shield 3 can display information by the transparent OLED 31 having excellent durability.

  The sealing layer 51 and the transparent OLED 31 are flexible in shape, are light and difficult to break, and can be bent. For this reason, the sealing layer 51 and the transparent OLED 31 can be formed in a curved shape, and processing according to the shape of the shield 3 is possible. Further, the entire sealing layer 51 and the transparent OLED 31 are made of, for example, a transparent material having a visible light transmittance of 80% or more, so that information of the driver of the motorcycle 20 who is wearing the helmet 10 is not obstructed. Display is possible.

  The helmet 10 is not limited to a motorcycle, but may be used for other purposes such as car racing, diving, fire fighting, bacteria protection, poison gas protection, space suit, and the like. Furthermore, the configuration is not limited to the configuration in which the transparent OLED 31 is mounted on the helmet 10, and the configuration may be such that the transparent OLED 31 is mounted on glasses, sunglasses, goggles, a sun visor, or the like.

  When the helmet 10 is used for car racing, the wireless transmitter 21 may be mounted on the car body for car racing. When the helmet 10 is used for diving or the like, or when the transparent OLED 31 is attached to glasses or the like, the wireless transmitter 21 may be attached to each clothing. Note that the wireless transmitter 21 is not limited to be mounted on the vehicle body or clothes, but may be directly mounted on the helmet 10 or the like, or may be disposed at a predetermined distance from the helmet 10 or the like. Also good.

  In this embodiment, the case where the transparent electrode 54a is the cathode and the transparent electrode 54b is the anode has been described. However, the transparent electrode 54b may be the cathode and the transparent electrode 54a may be the anode.

  As described above, according to the embodiment, since the transparent OLED 31 is provided in the shield 3, information can be displayed on the shield 3 with a simple configuration without using another device such as an image irradiation device. Further, the transparent OLED 31 can be driven with a low voltage of several volts, and since the power consumption is low, the battery 5 attached to the helmet 10 can be made to last for a long time. Since the wireless receiver 4 and the wireless transmitter 21 are provided, information from the motorcycle 20 can be displayed on the transparent OLED 31 with a simple configuration. Further, since the transparent OLED 31 is highly transmissive, even when the outside of the helmet is viewed through the shield 3 provided with the transparent OLED 31, recognition of the outside is not hindered. Further, since the shield 3 having the transparent OLED 31 is disposed in front of the driver of the motorcycle 20, the driver can change the focus of the eyes without changing the posture while keeping the line of sight facing forward. Information displayed on the transparent OLED 31 can be visually recognized safely. Further, since the transparent OLED 31 can be bent, the transparent OLED 31 can be attached to a curved shape such as the shield 3 and information can be displayed.

  As described above, the helmet shield according to the present invention is useful for displaying information, and in particular, for helmets that can display information that is easy to read with light weight, low power consumption, and without obstructing the view of a motorcycle driver. Suitable for shielding.

It is a figure for demonstrating the structure of the shield for helmets concerning the Example of this invention. It is the flowchart which showed the procedure of the information display by the shield for helmets. It is a schematic diagram which shows an example of the cross-sectional structure of the shield with which transparent OLED was mounted | worn.

Explanation of symbols

3 Shield, 4 Radio receiver, 5 Battery, 10 Helmet, 20 Motorcycle 21 Radio transmitter, 51 Sealing layer, 52 Substrate, 53 UV cut layer, 54a, 54b Transparent electrode, 55 Organic layer, 56 Electron injection layer

Claims (6)

In the helmet shield attached to the helmet,
A cathode and an anode made of a transparent conductive material;
A transparent organic layer including a light emitting layer sandwiched between the cathode and the anode and emitting light by applying a predetermined voltage between the cathode and the anode;
A transparent substrate for forming the cathode, the anode and the organic layer;
A shield for helmets, comprising a transparent organic EL display unit comprising:   2. The helmet shield according to claim 1, wherein the transparent organic EL display section can be curved according to the shape of the helmet shield. The helmet includes a receiving unit that receives information transmitted from a transmitting unit installed in a place other than the helmet, and a power supply unit that drives the organic EL display unit and the receiving unit.
The shield for helmets according to claim 1, wherein the transparent organic EL display unit displays information from the receiving unit.   4. The helmet shield according to claim 1, wherein the transmission unit is installed in a motorcycle main body, an automobile main body, or clothes. 5.   The information from the receiving unit includes navigation information for guiding a route of the motorcycle and / or traveling information indicating a traveling state of the motorcycle. Shield for helmet.   The shield for a helmet according to any one of claims 1 to 5, wherein the transparent organic EL display unit further includes a prevention layer for preventing deterioration of the transparent organic EL display unit.

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