초록 ▼

A waterproof ground audio speaker apparatus has a speaker housing having a cylindrical sidewall, one open end and a closed end. A hollow cylindrical inner housing has a pair of open ends and is attached to the speaker housing with its walls in a spaced relationship to the walls of the speaker housin

A waterproof ground audio speaker apparatus has a speaker housing having a cylindrical sidewall, one open end and a closed end. A hollow cylindrical inner housing has a pair of open ends and is attached to the speaker housing with its walls in a spaced relationship to the walls of the speaker housing to form a passageway between the walls of the inner housing and the walls of the speaker housing. A loud speaker is mounted in the hollow inner housing facing one open end thereof for directing acoustical energy out the open end of the speaker housing and directing the backwave of the speaker through the hollow inner housing and through the passageway between the inner housing and the speaker housing to the open end of the speaker housing. A rigid domed supporting cover extends over the opening of the speaker housing and a filter membrane cover covers the open end of the speaker housing to protect the inside of the speaker enclosure. Annular flanges on either end of the speaker housing helps support the speaker housing in the earth and a special filter membrane made of laminated polyester and a polytetrafluoroethylene (TEFLON) sheet which allows the acoustical energy to pass therethrough while blocking the ingress of fluids and other materials into the speaker housing.

대표청구항 ▼

A waterproof audio speaker comprising: a speaker housing having side walls and a pair of ends, one end being closed and the other end being open; a hollow inner housing having walls and a pair of open ends and being mounted to said speaker housing with its walls in spaced relationship to the walls o

A waterproof audio speaker comprising: a speaker housing having side walls and a pair of ends, one end being closed and the other end being open; a hollow inner housing having walls and a pair of open ends and being mounted to said speaker housing with its walls in spaced relationship to the walls of said speaker housing, and forming a passageway between the walls of said inner housing and the walls of said speaker housing; a loudspeaker mounted in said hollow inner housing facing one open end thereof, said speaker housing being a substatially cylindrical housing and said hollow inner housing being a substatially cylindrical housing, and said speaker housing having an annular grooved bottom formed with a protruding knob in the center of said groove and said inner housing having one end protruding into said annular groove to form an annular arcuate passageway between said inner housing and the passageway between said inner housing and speaker housing; whereby the backwave of said speaker is ported through said inner housing and through the passageway between the walls of said inner housing and the walls of said speaker housing to the open end of said speaker enclosure; a supporting cover extending over the open end of said speaker housing; and a filter membrane cover extending over the open end of said speaker housing under said supporting cover for blocking the ingress of fluids and materials into the speaker housing.