Patent ID: 8141778

Claim:
An identification display device which is provided in a work unit in which a plurality of work locations are arranged in rows, and which displays for identifying a designated location selected from the work locations, the identification display device comprising: a database which stores address information of the respective work locations; light-display section which is provided respectively on each of the work locations, and which emits a visible light which contains the address information of the work location in which the light-display section is arranged, the visible light including a plurality of frames and a frame interval between the frames, the visible light containing an address bit pattern representing the address information of the work location in which the light-display section is arranged, a light intensity of the address bit pattern varying with time; a photoreceptor which transmits a photoreception signal which contains at least the address information contained in the visible light from the light-display section, when the visible light is received; and a confirmation section which receives the photoreception signal from the photoreceptor, and determines whether or not the address information contained in the photoreception signal matches the address information of the designated location which is obtained from the database wherein, the ease of visibility of the visible light emitted from the light-display section of the designated location selected from the work locations is set so as to have a relatively higher degree of visibility than that of the other work locations except the designated location by adjusting the lighting pattern of the light-display section so as to make the frame interval of the designated location shorter than the frame interval of other work locations except the designated location.