Patent•
Road indication device
17 May 2004-
TL;DR: In this paper, a road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp, which can project a light whose peak luminosity is 30000 cd or more.
Abstract: A road indication device is provided. The road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp. The light projection unit project a light whose peak luminosity is 30000 cd or more, i.e., the light has a luminosity equal to or larger than a peak luminosity of a headlight of a car running on the road. Since a light pillar of light having a high light output and a thick light pillar is projected from the light projection unit, the visuality of the light pillar is improved even in the bad weather and the boundary between the driveway and the shoulder on the road can be affirmatively guided and indicated.
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Patent•
10 Feb 2005
TL;DR: In this paper, a traffic information system provides information to traffic moving along a road and may include a plurality of traffic information devices mountable to the road, each having an integral power producing source, at least a first set of illumination sources, and a wireless communications subsystem.
Abstract: A traffic informational system provides information to traffic moving along a road and may include a plurality of traffic information devices mountable to the road, each having an integral power producing source, at least a first set of illumination sources, and a wireless communications subsystem. The traffic informational system may further include at least a first external control device comprising at least one antenna and a transmitter communication wirelessly with the traffic information devices and/or with one another. The traffic information device may communicate with one another, and may include sensor for sensing ambient conditions. The system employs various approaches to reducing power consumption and improving communications, and is suitable for a wide range of applications, including use in remote environments.
181 citations
Patent•
07 May 2012
TL;DR: In this article, a light fixture is described that measures the ambient light intensity and determines whether to provide illumination, and the light fixture may further determine a traffic status proximate the fixture and adjust the illumination accordingly.
Abstract: A light fixture is described that measures the ambient light intensity and determines whether to provide illumination. The light fixture may further determine a traffic status proximate the fixture and adjust the illumination accordingly. A network of light fixtures is also provided, the light fixtures communicating data to each other and determining illumination states therefrom.
33 citations
Patent•
09 May 2006
TL;DR: In this paper, a system for electrical power generation by utilizing wind draft force from vehicle traveling on roadways provides two types of wind turbine apparatuses, one type is for road side which sits along the side of a roadway; another type is installed along at traffic divider line at middle of the roadway.
Abstract: A system for electrical power generation by utilizing wind draft force from vehicle traveling on roadways provide two types of wind turbine apparatuses, one type is for road side which sits along the side of a roadway; another type is for road center which is installed along at traffic divider line at middle of a roadway. When vehicle moves at high speed, lots energy is used to push away air in its way. By setting wind turbines on road side and middle of road, some portions of the wasted energy can be re-captured.
32 citations
Patent•
18 Jul 2014
TL;DR: In this article, a traffic intersection lane and signal system for improving intersection capacity and safety is presented. But the system does not support left-handed or right-handed driving conventions.
Abstract: One embodiment of a traffic intersection lane and signal system for improving intersection capacity and safety. Through traffic is stopped by signal means ( 22 ) a distance away from the intersection. Turning traffic on turn lanes ( 10 ) and ( 14 ) have an option to proceed and queue on lane segments ( 12 ) and ( 16 ) respectively, then complete the turning maneuvers during phase φ7 and phase φ1 respectively. The through traffic released from signal means ( 22 ) arrives at the intersection at the time opposing left turn phase φ5 expires and through phase φ6 starts, and passes through the intersection without significant delay. A set of detectors ( 50 ) and signal means ( 52 ) located before the presignal help drivers to make stop decisions, and another set of detectors ( 54 ) and signal means ( 56 ) located before the intersection provide last second warning to drivers who ran the red light at the presignal. This system accommodates left-handed or right-handed driving conventions.
25 citations
Patent•
09 May 2006
TL;DR: In this article, a system for electrical power generation by utilizing wind draft force from vehicle traveling on roadways provides two types of wind turbine apparatuses, one type is for road side which sits along the side of a roadway; another type is installed along at traffic divider line at middle of the roadway.
Abstract: A system for electrical power generation by utilizing wind draft force from vehicle traveling on roadways provide two types of wind turbine apparatuses, one type is for road side which sits along the side of a roadway; another type is for road center which is installed along at traffic divider line at middle of a roadway. When vehicle moves at high speed, lots energy is used to push away air in its way. By setting wind turbines on road side and middle of road, some portions of the wasted energy can be re-captured.
14 citations
References
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Patent•
26 Sep 2002
TL;DR: In this article, a display system comprising a high-intensity discharge lamp system equipped with a stabilizer, a reflector mirror coated with a heat-absorption film, a shutter, and a light-gathering lens is presented.
Abstract: A display system comprising a high-intensity discharge lamp system equipped with a stabilizer, a reflector mirror coated with a heat-absorption film, a shutter, and a light-gathering lens; and a pole holding the high-intensity discharge lamp system at a desired height above the road or its vicinity. The display system of the invention enables drivers to easily see and locate the centerline, road shoulder, crosswalk, and traffic signs, even in the midst of rainstorm, dense fog, or blizzard.
8 citations
Patent•
19 Jul 2002
TL;DR: In this paper, a road boundary display device capable of ensuring high visibility even in bad weather such as snow, fog, and rain and preventing its installation place from being limited without affecting the surrounding environment adversely is presented.
Abstract: PROBLEM TO BE SOLVED: To provide a road boundary display device capable of ensuring high visibility even in bad weather such as snow, fog, and rain and preventing its installation place from being limited without affecting the surrounding environment adversely. SOLUTION: A boundary 2 on a road 1 is irradiated with laser beam B from above to display the boundary 2.
5 citations
Patent•
10 Jul 2002
TL;DR: In this article, the authors proposed a display device which can easily inform a driver of the presence of the center line or shoulder of a road, a crosswalk, and other safety indicators even if the driver drives in a heavy rain, a fog, or a heavy snow.
Abstract: PROBLEM TO BE SOLVED: To provide a display device which can easily inform a driver of the presence of the center line or shoulder of a road, a crosswalk, and other safety indicators even if the driver drives in a heavy rain, a fog, or a heavy snow. SOLUTION: The display device comprises a high luminance electric charge lamp body having a stabilizer, a reflective mirror having a heat absorptive film layer, a shutter mechanism and a condenser lens and a columnar body which indicates the electric charge lamp on the road surface or a spot at a desired level from the vicinity of the road surface. COPYRIGHT: (C)2004,JPO
1 citations
Patent•
28 Sep 1999
TL;DR: In this paper, a task ambient luminaire consisting of a dotted light source, a task lighting device optically opposed to the light source and containing a first light control member having a 1/2 beam angle of 20 degrees or less, an ambient lighting device with a 2.5 degree angle of 40 degrees or more, and a lumineire body capable of storing both the task lighting devices and the ambient lighting devices was proposed.
Abstract: PROBLEM TO BE SOLVED: To provide a task ambient luminaire which is improved in its workability. SOLUTION: This task ambient luminaire comprises a dotted light source 3, a task lighting device optically opposed to the light source and containing a first light control member 4 having a 1/2 beam angle of 20 degrees or less, an ambient lighting device optically opposed to the light source and containing a second light control member 2 having a 1/2 beam angle of 40 degrees or more and a luminaire body 5 capable of storing both the task lighting device and the ambient lighting device so that the opening end of the second light control member is located almost flat with the opening end of the first light control member. COPYRIGHT: (C)2001,JPO
1 citations