CN2664332Y - Long-distance high-voltage sound-signal driving type flat sound box - Google Patents
Long-distance high-voltage sound-signal driving type flat sound box Download PDFInfo
- Publication number
- CN2664332Y CN2664332Y CN 200320117066 CN200320117066U CN2664332Y CN 2664332 Y CN2664332 Y CN 2664332Y CN 200320117066 CN200320117066 CN 200320117066 CN 200320117066 U CN200320117066 U CN 200320117066U CN 2664332 Y CN2664332 Y CN 2664332Y
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- sound box
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Abstract
A long-distance high-voltage sound-signal driving type flat sound box comprises a vibration plate (1), pronunciation units (43,53), a frame (2) and a back cover (4); the back cover (4) is provided with an sound-signal interface (5) which comprises a set pressure signal interface (52); a sound transformer (6) is arranged on the back cover (4); the sound transformer (6) are connected with the set pressure signal interface (52) and pronunciation units (43,53) respectively. The long-distance high-voltage sound-signal driving type flat sound box can reduce a high-voltage sound-signal (70-100 volts) output from a set pressure station amplifier to a working volt (6.3 volts) of the prior pronunciation unit through the built-in sound transformer in order to drive an normal work of the pronunciation unit, and thereby users can use the flat sound box to play music and broadcast in the range of a long distance.
Description
Technical field
The utility model relates to loudspeaker box device, particularly the plat sound box device.
Background technology
Along with economic development and growth in the living standard, people are more and more diversified to the selection of various articles for use in the living environment.Plat sound box is thin because of its bodily form, space hold is few, have decorative effect preferably, and is obtaining using in increasing place.Existing plat sound box can only use the audio-signal-driven of common voltage (6.3 volts).
The general public sound system that uses in than large space or building, longer to the distance of each audio amplifier installation site from sound system power amplification machine, audio signal can produce bigger decay in transmission course.In order to guarantee the sound equipment result of broadcast, generally selecting output voltage for use is the level pressure power amplifier of 70-100 volt.And the audio signal of this high pressure can't directly drive existing plat sound box, thereby has limited the scope of application of the plat sound box with desired decoration effect.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and proposes a kind of plat sound box that can use the high pressure audio signal to drive in long distance range.
The purpose of this utility model can reach by taking following technical measures:
Manufacture and design a kind of length apart from high pressure audio-signal-driven type plat sound box, comprise vibration plate, pronunciation unit, framework and bonnet; Be covered with audio signal interface after described; And described audio signal interface comprises the level pressure signaling interface; On described bonnet audio frequency transformer is installed, it connects described level pressure signaling interface and pronunciation unit respectively.
Compared with prior art, the utility model length can be depressured to the high pressure audio signal (70-100 volt) of level pressure power amplifier output the operating voltage (6.3 volts) of existing pronunciation unit by built-in audio frequency transformer apart from high pressure audio-signal-driven type plat sound box, to drive pronunciation unit operate as normal, the user just can use plat sound box to come playing back music and broadcasting in long distance range like this.
Description of drawings
Fig. 1 is the structural representation of the utility model length apart from high pressure audio-signal-driven type plat sound box;
Fig. 2 is the local enlarged diagram in vibration plate of the present utility model cross section;
Fig. 3 is a circuit diagram of the present utility model;
Fig. 4 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing in detail specific embodiment of the utility model is described in detail.
A kind of length comprises vibration plate 1, pronunciation unit 43 and 53, framework 2 and bonnet 4 apart from high pressure audio-signal-driven type plat sound box; Described bonnet 4 is provided with audio signal interface 5; Described audio signal interface 5 includes level pressure signaling interface 52; On the described bonnet 4 audio frequency transformer 6 is installed, it connects described level pressure signaling interface 52 and pronunciation unit 43 and 53 respectively.Described pronunciation unit 43 and 53 is respectively tweeter and woofer, and wherein woofer 53 promotes vibration plate 1 vibration sounding.The plat sound box of present embodiment comprises the level pressure signaling interface, and common decides resistance signaling interface 51.Cover the audio frequency transformer that is connected with the level pressure signaling interface also is installed thereafter.The high pressure audio signal that the level pressure power amplifier that described audio frequency transformer receives the level pressure signaling interface transmits (70-100 volt) is depressured to the normal working voltage (6.3 volts) of pronunciation unit, to drive pronunciation unit operate as normal, make things convenient for the user in long distance range, to use plat sound box.
Described bonnet 4 is a truncated rectangular pyramids shape housing, and it is made of side panel 41 and top panel 42.Side panel 41 is provided with paraphase hole 44.The tweeter 43 that is installed on the side panel 41 forms an acute angle with metope, and high frequency sound wave is reflected by wallboard, helps high pitch and transmits to the plat sound box front.Simultaneously, the bonnet of truncated rectangular pyramids structure is with respect to the cuboid bonnet of existing plat sound box, and is thinner on visual effect.
Described vibration plate 1 outer surface posts decorative picture 3.Picture plays decoration function.Described picture 3 outer surfaces post plastic film 31, have waterproof, protection against the tide, prevent the effect that picture fades and is convenient to clean.Because it is plastic film is very thin, less to the broadcast influence of audio amplifier.
When plat sound box is worked, the high pressure audio signal of 70～100V transfers to audio frequency transformer 6 by level pressure signaling interface 52, this audio frequency transformer is converted to low pressure audio signal (6.3V) with the high pressure audio signal, transfer to the protective device of forming by resistance R 1, R2 and R3 7, by protective device 7 one road signal is transferred to woofer 53, woofer drives vibration plate and plays sound; Another road signal transfers to the high-frequency circuit of being made up of inductance and capacitor 8, carries out Filtering Processing by high-frequency circuit, and wherein high-frequency audio signal driving tweeter 43 plays sound.
Claims (4)
1. one kind long apart from high pressure audio-signal-driven type plat sound box, comprises vibration plate (1), pronunciation unit (43,53), framework (2) and bonnet (4); Described bonnet (4) is provided with audio signal interface (5); It is characterized in that:
Described audio signal interface (5) comprises level pressure signaling interface (52);
Audio frequency transformer (6) is installed on described bonnet (4), and it connects described level pressure signaling interface (52) and pronunciation unit (43,53) respectively.
2. plat sound box according to claim 1 is characterized in that:
Described bonnet (4) is a truncated rectangular pyramids shape housing.
3. according to claim 1 or 2 described plat sound box wherein, it is characterized in that:
Described vibration plate (1) outer surface posts decorative picture (3).
4. plat sound box according to claim 3 is characterized in that:
The outer surface of described picture (3) posts plastic film (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117066 CN2664332Y (en) | 2003-10-13 | 2003-10-13 | Long-distance high-voltage sound-signal driving type flat sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117066 CN2664332Y (en) | 2003-10-13 | 2003-10-13 | Long-distance high-voltage sound-signal driving type flat sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2664332Y true CN2664332Y (en) | 2004-12-15 |
Family
ID=34346523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320117066 Expired - Fee Related CN2664332Y (en) | 2003-10-13 | 2003-10-13 | Long-distance high-voltage sound-signal driving type flat sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2664332Y (en) |
-
2003
- 2003-10-13 CN CN 200320117066 patent/CN2664332Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |