JPH0241991Y2

JPH0241991Y2 -

Info

Publication number: JPH0241991Y2
Application number: JP1984079099U
Authority: JP
Priority date: 1984-05-28
Filing date: 1984-05-28
Publication date: 1990-11-08
Also published as: JPS60192597U

Description

【考案の詳細な説明】（技術分野）本考案は大出力ホーンスピーカのドライバを構
成する材料の改良に関するものである。[Detailed Description of the Invention] (Technical Field) The present invention relates to an improvement in materials constituting a driver for a high-output horn speaker.

（従来例と問題点）ホーンスピーカのドライバは第１図に示すよう
に構成されている。センターポール１、ボトムプ
レート２、マグネツト３とブリツジ４とで磁気回
路を構成する。磁気回路中の磁気空隙にボイスコ
イルを巻きつけたボビン５が挿入されたボビン５
に振動板６が接着剤により接着される。振動板６
の前方にイコライザ７のついたスロート８が被せ
られる。振動板６はその周辺部９をブリツジ４の
上に載せられたパツキング１０とスロート８との
間に挟まれて、ネジ１１をブリツジ４のネジ穴に
締付けて振動板６パツキング１０とスロート８を
同時に固定する。(Conventional Example and Problems) A horn speaker driver is constructed as shown in FIG. A center pole 1, a bottom plate 2, a magnet 3 and a bridge 4 constitute a magnetic circuit. A bobbin 5 in which a bobbin 5 with a voice coil wound thereon is inserted into a magnetic gap in a magnetic circuit.
The diaphragm 6 is bonded to the diaphragm 6 with an adhesive. Vibration plate 6
A throat 8 with an equalizer 7 is placed in front of it. The diaphragm 6 has its peripheral portion 9 sandwiched between the packing 10 placed on the bridge 4 and the throat 8, and tightens the screws 11 into the screw holes of the bridge 4 to connect the diaphragm 6 packing 10 and the throat 8. fixed at the same time.

ホーンスピーカが動作中のとき、ボイスコイル
がジユール熱を発生するが、この熱はセンターポ
ール１を通りボトムプレート２に至る第１の放熱
経路と、ブリツジ４およびマグネツト３を通る第
２の放熱経路とから放熱される。 When the horn speaker is in operation, the voice coil generates heat, which is distributed through a first heat radiation path that passes through the center pole 1 to the bottom plate 2, and a second heat radiation path that passes through the bridge 4 and magnet 3. Heat is radiated from the

普通の動作では上記放熱効果によりスピーカは
安全に動作するが、例えば50ワツトや100ワツト
くらいの大出力スピーカで大音圧音を連続して出
力するとき、上記放熱では不充分であり、ボイス
コイルはかなり高温になる。 In normal operation, the speaker operates safely due to the above heat dissipation effect, but when a high-output speaker of, for example, 50 watts or 100 watts continuously outputs high sound pressure sound, the above heat dissipation is insufficient and the voice coil gets quite hot.

（考案の目的）本考案は新たに第３の放熱経路を作り、ボイス
コイル付近の温度上昇を抑え、より一層高出力を
可能にするものである。(Purpose of the invention) The invention creates a new third heat dissipation path, suppresses the temperature rise near the voice coil, and enables even higher output.

（実施例）第１図に示す実施例において、パツキン１０を
アルミニユウムのダイキヤスト品で構成したこと
を特徴とする。パツキング１０は振動板９の肉厚
より浅い段部２１が形成されている。従つて振動
板周辺部９は、パツキング１０とスロート８に挟
持されて固定される。このとき段部２１は振動板
周辺部９の肉厚より浅いので、振動板周辺部９を
確実に挟持するとともに、パツキング１０とスロ
ート８が密着する。(Embodiment) The embodiment shown in FIG. 1 is characterized in that the packing 10 is made of an aluminum die-cast product. The packing 10 is formed with a stepped portion 21 that is shallower than the thickness of the diaphragm 9. Therefore, the diaphragm peripheral portion 9 is clamped and fixed between the packing 10 and the throat 8. At this time, since the stepped portion 21 is shallower than the wall thickness of the diaphragm peripheral portion 9, the diaphragm peripheral portion 9 is reliably held, and the packing 10 and the throat 8 are brought into close contact.

この実施例ではボイスコイルで発生した熱は上
記第１および第２の経路から放熱されるととも
に、ブリツジ４およびパツキング１０を通つてス
ロート８に至る第３の放熱経路からも放熱され
る。 In this embodiment, the heat generated in the voice coil is radiated not only from the first and second paths, but also from a third heat radiation path that passes through the bridge 4 and packing 10 and reaches the throat 8.

（他の実施例）パツキング１０の内側を肉薄にしてボイスコイ
ルの近くまで延長する。即ちブリツジ４と同じ内
径にする。アルミニユウム製パツキングの内側が
ボイスコイルの極く近くに位置するので放熱効果
が高くなる。(Other Embodiments) The inside of the packing 10 is made thinner and extends close to the voice coil. That is, it has the same inner diameter as the bridge 4. Since the inside of the aluminum packing is located very close to the voice coil, the heat dissipation effect is high.

（考案の効果）第１の放熱経路および第２の放熱経路は継鉄お
よび磁石であるが、第３の放熱経路はスロート８
とパツキング１０がアルミニユウム製であるから
熱伝導率は高く、放熱効果が高い。従つてより一
層大出力が可能となる。またアルミニユウム製パ
ツキングは、従来のゴム製やプラスチツク製に比
べて振動板を強く挟持することができる。(Effect of the invention) The first heat radiation path and the second heat radiation path are the yoke and the magnet, but the third heat radiation path is the throat 8.
Since the packing 10 is made of aluminum, its thermal conductivity is high and the heat dissipation effect is high. Therefore, even higher output is possible. Additionally, aluminum packing can hold the diaphragm more firmly in place than conventional rubber or plastic packing.

[Brief explanation of the drawing]

第１図はホーンスピーカの断面図、第２図は本
考案の一実施例のドライバー部分の一部拡大断面
図を示す。１０はパツキング、４はブリツジ、２１は溝で
ある。 FIG. 1 is a sectional view of a horn speaker, and FIG. 2 is a partially enlarged sectional view of a driver portion of an embodiment of the present invention. 10 is a packing, 4 is a bridge, and 21 is a groove.

Claims

[Scope of utility model registration request]

A magnetic circuit consisting of a center pole, a bottom plate, a magnet, and a bridge, a diaphragm having a voice coil bobbin inserted into the magnetic gap of this magnetic circuit, a throat placed in front of this diaphragm, and a space between the bridge and the throat. In the horn speaker driver, the packing is made of aluminum, and the inner half of the packing is formed with a stepped portion shallower than the wall thickness of the diaphragm, and the stepped portion allows the periphery of the diaphragm to be A speaker characterized in that the parts are clamped and fixed, and the outer peripheral half is in direct contact with the throat and the bridge to form a heat radiation path for guiding heat generated by the voice coil to the throat.