JPH0163288U

JPH0163288U -

Info

Publication number: JPH0163288U
Application number: JP1987157766U
Authority: JP
Priority date: 1987-10-14
Filing date: 1987-10-14
Publication date: 1989-04-24

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例のバスレフ形スピー
カ１１の断面図、第２図はダクト２１〜２４付近
の斜視図、第３図はバスレフ形スピーカ１１をト
ランク室３３側から見た取付構造を示す図、第４
図はバスレフ形スピーカ１１の周波数特性を示す
グラフ、第５図は本考案の他の実施例のバスレフ
形スピーカ３１のダクト３２付近の斜視図、第６
図は本考案のさらに他の実施例のバスレフ形スピ
ーカ４１の開口４２付近の斜視図、第７図は先行
技術のバスレフ形スピーカ１の斜視図、第８図は
先行技術のバスレフ形スピーカ１の周波数特性を
示すグラフである。１１，３１，４１……バスレフ形スピーカ、１
２……スピーカボツクス、１３……前面板、１４
……ウーハ、１５……ツイータ、１６……底板、
１７〜２０，２８，４２……開口、２１〜２４，
３２……ダクト、２５……押え板、２６……ダク
ト選択板、３４……リアトレイ、３５……取付孔
、４３……扉。 FIG. 1 is a sectional view of a bass reflex speaker 11 according to an embodiment of the present invention, FIG. 2 is a perspective view of the vicinity of ducts 21 to 24, and FIG. 3 is a mounting structure of the bass reflex speaker 11 seen from the trunk compartment 33 side. Figure 4 showing
5 is a graph showing the frequency characteristics of the bass reflex speaker 11, FIG. 5 is a perspective view of the vicinity of the duct 32 of the bass reflex speaker 31 according to another embodiment of the present invention, and FIG.
The figure is a perspective view of the vicinity of the opening 42 of a bass reflex speaker 41 according to another embodiment of the present invention, FIG. 7 is a perspective view of the bass reflex speaker 1 of the prior art, and FIG. 8 is a perspective view of the bass reflex speaker 1 of the prior art. It is a graph showing frequency characteristics. 11, 31, 41... Bass reflex speaker, 1
2...Speaker box, 13...Front plate, 14
...Wooha, 15...Tweeter, 16...Bottom plate,
17-20, 28, 42...opening, 21-24,
32... Duct, 25... Holding plate, 26... Duct selection plate, 34... Rear tray, 35... Mounting hole, 43... Door.

Claims

【実用新案登録請求の範囲】スピーカボツクス内と外部とを連通する１また
は複数のダクトが設けられるバスレフ形スピーカ
であつて、前記ダクトはスピーカボツクスの底部に設けら
れ、前記ダクトの長さまたはその開口面積の少なく
ともいずれか一方を複数段階に亘つて変化するよ
うにしたことを特徴とするバスレフ形スピーカ。[Claims for Utility Model Registration] A bass reflex speaker that is provided with one or more ducts that communicate between the inside of the speaker box and the outside, wherein the duct is provided at the bottom of the speaker box, and the length of the duct or its length is A bass reflex speaker characterized in that at least one of the opening areas is changed over multiple stages.