JPS5477910A - Automotive air conditioning duct - Google Patents

Automotive air conditioning duct

Info

Publication number
JPS5477910A
JPS5477910A JP14388877A JP14388877A JPS5477910A JP S5477910 A JPS5477910 A JP S5477910A JP 14388877 A JP14388877 A JP 14388877A JP 14388877 A JP14388877 A JP 14388877A JP S5477910 A JPS5477910 A JP S5477910A
Authority
JP
Japan
Prior art keywords
vehicle
cold air
noise
equalize
air conditioner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14388877A
Other languages
Japanese (ja)
Other versions
JPS609944B2 (en
Inventor
Norimoto Matsuda
Takenao Okumoto
Katsuyuki Terada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14388877A priority Critical patent/JPS609944B2/en
Publication of JPS5477910A publication Critical patent/JPS5477910A/en
Publication of JPS609944B2 publication Critical patent/JPS609944B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To equalize the distribution of noise by lowering the noise level directly under an automotive air conditioner by constructing a two-stage cold air duct to substantially equalize the noise propagating distances from the air conditioner as a sound source to both the center in a vehicle and the end in the vehicle.
CONSTITUTION: A cold air duct 24 is divided into upper-stage and lower-stage cold air ducts 24a and 24b through a partition plate 25 provided over approx. half of the entire length of a vehicle 21 around the vicinity of and directly under an automotive air conditioner 22 as a center with sound absorbers 28, 29 bonded onto duct wall 33 and plate 25. The noise propagating distances from a cold air diffuser 23 to both a central air diffuser 27a and an end air diffuser 27b are substantially equal via the plate 25 to thereby lower and equalize the noise level at the respective positions in the vehicle.
COPYRIGHT: (C)1979,JPO&Japio
JP14388877A 1977-12-02 1977-12-02 Vehicle air conditioning duct Expired JPS609944B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14388877A JPS609944B2 (en) 1977-12-02 1977-12-02 Vehicle air conditioning duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14388877A JPS609944B2 (en) 1977-12-02 1977-12-02 Vehicle air conditioning duct

Publications (2)

Publication Number Publication Date
JPS5477910A true JPS5477910A (en) 1979-06-21
JPS609944B2 JPS609944B2 (en) 1985-03-14

Family

ID=15349355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14388877A Expired JPS609944B2 (en) 1977-12-02 1977-12-02 Vehicle air conditioning duct

Country Status (1)

Country Link
JP (1) JPS609944B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113264U (en) * 1984-01-06 1985-07-31 東急車輌製造株式会社 Ropeway cabin ventilator
JP2008302770A (en) * 2007-06-06 2008-12-18 Tokyu Car Corp Ceiling structure for rolling stock

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454193Y2 (en) * 1988-08-03 1992-12-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113264U (en) * 1984-01-06 1985-07-31 東急車輌製造株式会社 Ropeway cabin ventilator
JP2008302770A (en) * 2007-06-06 2008-12-18 Tokyu Car Corp Ceiling structure for rolling stock

Also Published As

Publication number Publication date
JPS609944B2 (en) 1985-03-14

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