Water-proof sound apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKatsumi Tsutsui, Takeuki Yamamoto
Life of this patent
Estimating the term…
Abstract
A water-proof sound apparatus comprising a sealed cabinet, filter means attached to said cabinet which is permeable to gases and impermeable to liquids, a speaker attached to said cabinet which has a water-proof construction, and a grill covering the front of said speaker. The above sound apparatus when used can be floated in water, and it can be washed with city water and the like. The relationship between the outside atmospheric pressure and the pressure in the cabinet can be adjusted in accordance with the changes in the atmospheric temperature, the atmospheric pressure, and the temperature in the cabinet, so that an excellent sound effect can be attained at all times.
Claims5
A water-proof sound apparatus comprising:
- a sealed cabinet;
- a through hole defined in one of the main surfaces of said sealed cabinet;
- a gas-permeable and liquid-impermeable filter fitted in said through hole;
- a speaker mounted in said one of the main surfaces of the sealed cabinet at a position apart from said filter, said speaker being water-proof and having a conical-shaped diaphragm which is projected from said one of the main surfaces of the sealed cabinet when the speaker is mounted in the sealed cabinet;
- and
- a protecting member attached to said cabinet and covering the front surface of said air-permeable and water-impermeable filter, said protecting member defining at least one through hole in at least one lateral side thereof to communicate said filter with the atmosphere and to drain water trapped within said protecting member.
A liquid repellent sound transducing apparatus, comprising:
- a sealed cabinet having a through hole defined in one surface thereof;
- a gas-permeable, liquid-impermeable filter;
- means mounting said filter in said through hole, including a fixture member fitted in said through hole and having openings in a circumferential edge portion thereof to permit run off of liquid collecting on the outer surface of said filter, said filter being secured to said fixture member within said circumferential edge portion;
- a first cover member extending from said one cabinet surface and covering said filter, said first cover member having at least one through opening in a lateral side thereof to permit communication of said filter with the atmosphere and to permit drainage of liquid out of the space within said first cover member;
- a speaker mounted in said one cabinet surface at a location spaced from said filter, said speaker having a conical surface, the apex of which extends outwardly of said one cabinet surface, the surface of said speaker having a liquid repellent coating thereon;
- and
- a second cover extending from said one cabinet surface and covering said speaker, said second cover member having at least one through opening in a lateral side thereof to permit communication of said speaker with the atmosphere and to permit drainage of liquid out of the space within said second cover member.
Dependencies are inferred from the claim text.