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Patent Searching and Data


Title:
【発明の名称】表示装置
Document Type and Number:
Japanese Patent JP2856676
Kind Code:
B2
Abstract:
PURPOSE:To grasp the rough operating frequency and operating time even when a prescribed digit range of integral value exceeds the limit number of digits that can be shown on a display device by performing the display of a prescribed form at the head or the end of the display device to show the higher order digits of numeric characters even when the numeric characters to be shown exceeds the limit number of digits that can be shown. CONSTITUTION:In a maintenance mode, a display device control means reads the integral value related to the integral burning frequency and time out of an E<2>PROM. A display changing means shows H implying 100 times at a display part 41 secured at the left edge of a display device 4 when the integral burning time exceeds 10000 hours, for example, and then instructs a display circuit to show only three higher order digits of the integral burning time at the parts 42, 43 and 44 respectively. Meanwhile the H implying 100 times is also shown at the part 41 when the integral burning frequency exceeds 100000 times, and the display circuit shows only three higher order digits of the integral burning frequency at the parts 42-44 respectively.

Inventors:
YASUI SHIGEAKI
MANO HIROSHI
Application Number:
JP16986794A
Publication Date:
February 10, 1999
Filing Date:
July 22, 1994
Export Citation:
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Assignee:
RINNAI KK
International Classes:
F23N5/26; F24C5/00; F24H3/04; G07C3/10; (IPC1-7): G07C3/10; F23N5/26; F24C5/00; F24H3/04
Domestic Patent References:
JP4113119A
Attorney, Agent or Firm:
Kenji Ishiguro