CN2223877Y

CN2223877Y - Outdoor voice box

Info

Publication number: CN2223877Y
Application number: CN 95242948
Authority: CN
Inventors: 陈东红
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-27
Filing date: 1995-03-27
Publication date: 1996-04-03
Anticipated expiration: 2005-03-27

Abstract

The utility model discloses an outdoor sound box which is composed of a helping sound box and a box body in which a horn, a loudspeaker, a line transformer or a frequency divider are arranged, wherein, the housing of the helping sound box is a stone-modeled fiber glass reinforced plastics housing, the inner front part of the box body is the horn, the loudspeaker is arranged on the top wall part of the horn, and the back part of the box body is an inverted sound diffusion box; the front face of the box body is provided with a sound hole, and the bottom of the box body is provided with drainage holes and a mounting bracket. The utility model has the advantages of rain prevention, sun resistance, good sound effect and convenient installation and use, which is an ideal outdoor sound box.

Description

Outdoor voice box

The utility model relates to a kind of electroacoustic equipment, particularly Outdoor voice box.

Existing outdoor speaker system can be divided the cuboid audio amplifier of cone type loudspeaker and different sizes substantially, and the former structurally is made up of moving device of body and taper horn.This speaker system is not suitable for playing as soft background music, because of its frequency response narrow, highly sensitive, clear inadequately softly as a kind of certain cultural atmosphere of constructions; The latter mainly is made up of loud speaker and acoustic box.The acoustic box of this speaker system many with timber or metal as casing because material is limit, even skin scribbles underwater paint, its decay resistance is still very limited, thus shadow is to its useful life out of doors.Simultaneously, because it is shaped to cuboid, ornaments are gone up and are difficult to combine together with the natural landscape landscape out of doors, on places of cultural interest environment cooperates suitable limitation are arranged.This in addition audio amplifier is owing to adopt general baffle that the loud speaker method is installed, and not only the height of sensitivity is limited by the condition of loudspeaker unit, and water-resistant performance is relatively poor, so must take special mode rainproof sometimes.

The frequency that the purpose of this utility model provides and a kind ofly uses out of doors, the sun-proof ability of waterproof is strong, have broad is clear melodious to, broadcast.And the Outdoor voice box that can in the places of cultural interest or nature landscape environment, furnish, can on shaping style, combine together with environment.

The purpose of this utility model is achieved in that it is made of the horn of installing in acoustic box and the case, loud speaker, line transformer or frequency divider, the shell of acoustic box is the glass fibre reinforced plastics casing of imitative stone moulding, the front of shell has some 1 sound holes that go out, the bottom of horn and casing all has osculum, horn is the reflection horn, be arranged on the preceding part in the acoustic box body, loud speaker places horn diffusion chamber crown wall portion, back part in the casing is for swinging to formula sound diffusion case, and bottom half is provided with mounting bracket.

Fig. 1 has provided outline drawing of the present utility model (facing)

Fig. 2 has provided cutaway view of the present utility model (side)

As shown in the figure, the utility model is to be made of the horn of installing in acoustic box 1 and the casing 7, loud speaker 2, line transformer or frequency divider 4.The shell 3 of acoustic box 1 forms for the glass-reinforced plastic material die casting of imitative stone moulding, and is firm, withstand voltage, shock-resistant, and anti-rainwater.Have some senders 8 in the front of cabinet shell 3, horn 7 is equipped with osculum 6 with at the bottom of the case, also can discharge rapidly even rainwater infiltrates from sender 8, can not influence loud speaker 2 and line transformer 4 makes moist.Divide two in the casing partly, preceding is horn formula sound diffusion case partly, loud speaker 2 places horn diffusion chamber crown wall portion, spread out of sender 8 after utilizing the sound reflecting principle that acoustic energy is concentrated, the back is partly for swinging to formula sound diffusion case 9, radiation acoustic energy in the loud speaker back side is spread out of by the osculum 6 that utilizes casing after swinging to, this structure has made full use of loud speaker acoustic energy just dorsad, utilized horn to gather the sound diffusion advantage simultaneously, thereby improved the sensitivity of speaker system, bottom half has two " L " shape device mounting brackets 5, thereby makes installation very convenient quick.

Be not difficult to find out from above, the utlity model has following outstanding effect:

1, casing adopts glass-reinforced plastic material, and is more sturdy and durable than little matter case, more anti-than metallic case Corrosion.

2, profile adopts imitative stone moulding, furnishes in outdoor natural environment, can combine together with the Aesthetic Function of nature or the places of cultural interest, scenic spot.

3, rainproofly, sun-proof be suitable for using for a long time out of doors.

4, utilize the horn diffusion principle that alt is reflected from bottom to top, alt clearly can be imported into people's ear of stroll.

5, outdoor installation is very convenient.

Claims

1, a kind of Outdoor voice box, by the horn of installing in acoustic box (1) and the case (7), loud speaker (2), line transformer or frequency divider (4) constitute, it is characterized in that the glass fibre reinforced plastics casing of the shell (3) of acoustic box (1) for imitative stone moulding, the front of shell (3) has some senders (8), the bottom of horn (7) and casing (1) all has osculum (6), horn (7) is the reflection horn, be arranged on the preceding part in the acoustic box body, loud speaker (2) places horn (7) diffusion chamber crown wall portion, back part in the casing is for swinging to formula sound diffusion case (9), and bottom half is provided with mounting bracket (5).