Method of producing casing for audiovisual equipment

Details Method of producing casing for audiovisual equipment Method of producing casing for audiovisual equipment

1997-05-14

1998-12-22

Heitbrink, Jill L.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156293, 181199, 312213, G10K 1100, H04N 564, H04R 102

Patent

active

058513345

ABSTRACT:
A casing for an audiovisual equipment presents an outer appearance giving the impression of integrating a hole area formed of a plurality of sound transmitting fine holes with the casing, thereby making the hole area unnoticeable. This allows a viewer to easily concentrate on the screen by eliminating anything noticeable from the area surrounding the screen, and also gives the outside of the casing a luxurious appearance. In order to make the hole area unnoticeable, maintain good volume and quality of sound from the speaker, and arrange the diameter .phi.d mm of the tapered fine holes to be practically the smallest, the relationship between the diameter .phi.d mm and the thickness T mm of the casing must be expressed by the following formula: (1/6).times.T mm.ltoreq..phi.d mm.ltoreq.0.5 mm. When the fine holes are formed to be straight, the relationship between the diameter .phi.ds mm and the thickness tmm of the casing must be expressed by the following formula: (1/5).times.t mm.ltoreq..phi.ds mm.ltoreq.0.5 mm.

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