Title:
A load marker or a light type warning device
Document Type and Number:
Japanese Patent JP6138800
Kind Code:
B2
Abstract:
A road marker and related light based warning device are described. The road marker or device includes a thermal sensor that triggers the illumination of at least one light-emitting diode at a predetermined temperature. The temperature may be associated with ice formation. The light-emitting diode(s) may flash to alert motorists to hazardous road conditions. The road marker or device utilize simple components to increase reliability, particularly when the device is subjected to high heat such as when the device is mounted into hot tar seal. The device further includes a switching element that prevents rapid on/off cycling.
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Inventors:
Patrick John Martin
Paul Senior
Paul Senior
Application Number:
JP2014531753A
Publication Date:
May 31, 2017
Filing Date:
July 05, 2012
Export Citation:
Assignee:
SOLAR BRIGHT LIMITED
International Classes:
E01F9/40; E01F9/506; E01F9/559; E01F9/615; G09F13/20; G09F19/22
Domestic Patent References:
| JP2002256520A | ||||
| JP6088314A | ||||
| JP52066478A | ||||
| JP2002212925A | ||||
| JP2007536446A | ||||
| JP9003839A | ||||
| JP4222708A | ||||
| JP3004992U | ||||
| JP2009221818A | ||||
| JP8251818A | ||||
| JP5003321U | ||||
| JP2006274685A | ||||
| JP9203015A | ||||
| JP2002163764A |
Foreign References:
| US20110135386 | ||||
| US5897271 | ||||
| US20090297264 | ||||
| WO2005052262A1 | ||||
| GB1123354A |
Attorney, Agent or Firm:
Kenji Sugimura
Yoshihiro Uemura
Tatsuya Tanaka
Yoshihiro Uemura
Tatsuya Tanaka