Title:
PROJECTION TYPE TELEVISION RECEIVER
Document Type and Number:
Japanese Patent JPH02174385
Kind Code:
A
Abstract:
PURPOSE:To increase the lifetime of a projection type TV receiver by adding a pressure control part containing a lamination of a 1st elastic substance layer which does not contaminate a liquid and a 2nd elastic substance layer which controls the transmission of gas formed from the side bringing into contact with the liquid to a housing. CONSTITUTION:A pressure control part 30 contains a lamination of a silicon rubber layer 30a which does not contaminate a liquid 28 and has a large degree of gas transmittance and an ethylenepropylene rubber-silicon rubber copolymer layer 30b which has a small degree of transmittance and may possibly contaminate the liquid 28 formed from the side bringing into contact with the liquid 28. Then the part 30 is put into a housing 22. Thus the contamination of the liquid 28 filled in the housing 22 is surely prevented and then the consumption of the liquid 28 is also prevented. In such constitution, a projection type TV receiver can be used as long as possible.
Inventors:
EDO YASUKAZU
Application Number:
JP32754788A
Publication Date:
July 05, 1990
Filing Date:
December 27, 1988
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H01J7/26; H01J29/00; H01J31/10; H04N5/74; (IPC1-7): H01J7/26; H04N5/74
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)