Casing for projection television receiver and screen mounting method

A casing for use in a projection television receiver having a transmission-type screen comprising:

• a cabinet means for accommodating said screen therein, said cabinet means having a first side, a second side, a third side, and a fourth side for configuring said cabinet means to have a rectangular opening, said first and second sides and said third and fourth sides being opposed to each other, respectively;
• a plurality of first spring fixtures for being secured and biased to said first and second sides for keeping a first clearance from said first and second sides, said first spring fixtures having a first side notch opened on one of sides thereof;
• a plurality of second spring fixtures for being secured and biased to said third and fourth sides for keeping a second clearance from said third and fourth sides;
• two of a first frame having a channel portion for catching said screen therein and a first flat portion for being inserted to said first clearance, said channel portion being raised from the top surface of said flat portion for functioning as a stopper at which said first frame stops when inserted to said first clearance, said first flat portion having a plurality of projections on the bottom surface thereof;
• and
• two of a second frame having a hold portion for holding said screen and a second flat portion for being inserted to said second clearance, whereby said screen is installed to said cabinet means such that said first frames catching said screen in said channel portion is seized at said first clearance having said projection engaged with said first side notch and said second frames holding said screen by said hold portion is seized by said second spring fixtures at said second clearance.

A method for mounting a screen to a projection television receiver casing comprising a cabinet means having a first side, a second side, a third side, and a fourth side for configuring said cabinet means to have a rectangular opening, a first frame means having a first fix portion and a first free portion having a channel;

• a second frame means having a second fix portion and a second free portion having a plurality of first projections;
• and a first insert means having a first hold portion and a first insert portion provided with a first notch for an engagement with said first projection, said method comprising the steps of:
• securing said first fix portion to said first side with said channel facing up;
• securing said second fix portion to said second side with said first projections upward to keep said free portion apart from said second side by a predetermined distance for obtaining a first gap therebetween;
• inserting said screen in said channel;
• and
• inserting said first insert means to said first gap such that said first notch engages with said first projection and said hold portion holds said screen between said first free portion and said first hold portion.

A method for mounting a screen to a projection television receiver casing comprising a cabinet means having a first side, a second side, a third side, and a fourth side for configuring said cabinet means in a rectangular tube opening at two sides, a third frame means having a third fix portion and a third free portion having a second projection;

• and a second insert means having a second insert portion provided with a second notch and a second hold portion for holding said screen, said method comprising the steps of:
• securing said third fix portion to said third and fourth sides as said second projections faces to said third and fourth sides to keep said third free portion apart from said third and fourth sides by a predetermined distance for obtaining a second gap therebetween;
• inserting said screen in said cabinet means so as to contact with said third free portions;
• and
• inserting said second insert means to said second gap such that said second notch engages with said second projection and said second hold portion holds said screen between said third free portion and said second hold portion.