Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
September 6, 2016
Patent Application Number
14424465
Date Filed
August 16, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
In the vicinity of the outgoing-side end portion 202 of a light guide rod 20, the rear face thereof is formed into an inclined face 23 being inclined in a tapered shape toward the side face. The infrared ray having advanced toward the flat face of the outgoing-side end portion 202 is reflected by the inclined face 23. The infrared ray reflected by the inclined face 23 is refracted by the side face of the light guide rod 20 and irradiated, thereby being irradiated while being expanded toward the outgoing-side end portion 202. Hence, a bar speaker 1 can irradiate the infrared ray in a wide range beyond the width of the housing 10 thereof.
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