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“Invent a New India Using Knowledge”

है”ह”ह

IS 9264-1 (1979): Interior Lighting of Motor Vehicle, PartI: General Requirements and Recommendations [TED 11:Automotive Electrical Equipment]

IS : 9264 ( Part I ) - 1979

Indian S tankard SPECIFICATION FOR

INTERIOR LIGHTING OF MOTOR VEHICLE

PART I GENERAL REQUIREMENTS AND RECOMMENDATIONS

Automobile Electrical Equipment Sectional Committee, ETDC 14:

Chairman

SHRI~%. S. V. RAO

Representing

The Automotive Research Association of India, Pune

Mem hers

SJIRI Y. M. BALAK~ISHNA Motor Industries Co Ltd, Bangalore SHRI M. S. S. JOIS ( Alfernate )

SHRI J. V. BAPURAJ The Development Commissioner, Small Scale Industries, New Delhi

SI~RI B. S. BHAGOWALIA Tata Engineering & Locomotive Co Ltd, Jamshedpur

SHRI K. S. K%ICAR ( Atematc ) SHRI A. B. BHAMARE Central Institute of Road Transport ( Training

& Research ), Pune SHRI R. BRANDART J.M.A. Industries Pvt Ltd, New Delhi

SHRI P. S. PATTABHIRAMAN ( Alternate ) SHRI S. Cl. BHAR Hindustan Motors Ltd, Calcutta SHRI R. S. CHANDHOKE Vehicles Research & Development Establishment,

( Ministry of Defence ). Ahmednagar . MAJ DILBACJH RAI ( Alternate) ’ ’

,,

SIIRI S. S. DATE Globe Auto Electricals Ltd, Bombay SHRI S. L. SARA+ ( Alternate )

LT-COL K. P. DESWAL Department of Defence Production [ Ministry of Defence ( DGI ) 1, New Delhi

LT.COL RANJZT SINGH ( Alternate ) SHRI P. K. JAIN Prestolite of India Ltd, New Delhi

SHRI R: L. BANSAL ( Alternate ) SHRI N. M. JOBANPUTRA Mahindra & Mahindra Ltd, Bombay SHRI P. B. KEREAR Bombay Electric Supply & Transport Under-

taking, Bombav SEIRI M. J. MANTRI Automete% Ltd, Ballabhgarb

SHRI A. K. CHOPRA ( Alternate )

( Continued on page 2 )

&3 Co@right 1980 INDIAN STANDARDS INSTITUTION

This publication is protected under the Indian Coprright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

IS : 9264 ( Part I ) - 1979

( Continuedfrom page 1 )

Members Repesenting

SHRI VEP~. A. MURARI Lucas-TVS Ltd, Madras SHRI V. S. MANI ( Alternate )

SHRI K. MUTHU SUBRAMANIAM SHRI 0. SUDARSHAN ( Alternate )

Ashok Leyland Ltd, Madras

CDR B. K. S NAIR SHRI R.%ALYANASUNDARAM

International Instruments Pvt Ltd, Bangalore

( Alternate ) SHRI K. K. SHARMA National Test House, Calcutta

SRRI G. BHATTACHARYA ( Alternate ) SERI L. SRINIVASA MADHAVAN Standard Motor Products of India Ltd, Madras

SHRI K. RAVINDRA RAO ( Alternate ) SHRI SUSHIL KUMAR Directorate General of Technical Development,

New Delhi SHRI S. K. BRARIJI ( Alternate )

SHRI V. P. TILAK SHRI T. S. PILLAY ( Alternate )

Premier Automobiles Ltd, Bombay

&RI H. V. VAZE Maharashtra State Road Transport Corporation,

SHRI S. P. SACHDEV, Bombay

Director ( Elec tech ) Director General, ISI ( Ex-o&io Member )

Secretary

SHRI DIPAK DASDE Assistant Dirrctor ( Elec tech ), IS1

2

IS : 9264 ( Part I ) - 1979

Indian Standard SPECIFICATION FOR

INTERIOR LIGHTING OF MOTOR VEHICLE

PART I GENERAL REQUIREMENTS AND RECOMMENDATIONS

0. FOREWORD

0.1 This Indian Standard ( Part I ) was adopted by the Indian Standards Institution on 30 August 1979, after the draft finalized by the Automobile Electrical Equipment Sectional Committee had been approved by the Electrotechnical Division Council.

0.2 This standard lays down general requirements related to the interior lighting of motor vehicles and recommends the levels of illuminations.

0.3 It does not include the indicator lights which show the functioning of headlights and direction indicators or warning lights used on dash board. Tests for individual light fittings are also not covered.

0.4 This standard does not cover interior lighting devices for motor vehicles which will form a separate part of this standard.

0.5 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, express- ing the result of a test, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard ( Part I ) lays down general requirements related to interior lighting of motor vehicles and recommends the levels of illumina- tion to help perform various functions in adequate comfort.

2. TERMINOLOGY

2.0 For the purpose of this standard, the following definitions shall apply.

*Rules for rounding off numerial values ( revised ).

3

IS : 9264 ( Part I ) - 1979

2.1 General Lighting - The lighting designed to provide a substan- tially uniform level of illumination within an automobile, exclusive of any provision for special local requirements.

2.2 Local Lighting - The lighting used to provide illumination over a relatively small area or confined space.

2.3 Luminaire - A complete lighting unit consisting of a light source, together with its direct accessories, such as housing, reflector, lens ( also termed as diffuser or refractor ) and such support as in integral with the housing. The accessories to the light source distribute the light, position and protect the light source and connect the lamp( s ) to the power supply *

2.3.1 Surface Mounted Luminaire - A luminaire mounted directly on the ceiling, a wall or other surface of an automobile with the luminaire projecting from the mounting surface towards the area to be illuminated.

2.3.2 Flush Mounted Luminaire - A luminaire mounted in such a way that it is sunk in the ceiling, a wall or other surface with the lens of the luminaire level with the surface.

2.3.3 Recessed Mounted Luminake - A luminaire mounted in such a way that it is sunk in the ceiling, a wall or other surface with the lens of the luminaire behind this surface.

2.3.4 Lens - A device to redirect or scatter the light from a source, primarily by the process of diffuse transmission.

2.3.5 Matt Surface ( of the Lens ) - A surface through which the trans- mission of light is predominantly diffused.

3. GENERAL CONSIDERATIONS AND GUIDELINES FOR INTERNAL ILLUMINATION

3.1 The prime consideration while deciding on the internal illumination is the comfort of the operator and passengers while travelling by night.

3.1.1 The particular problem which is faced while deciding the illumi- nation level is the limited electric power which can be made available for this purpose. Also, while selecting the source of power supply and the luminaires, the exposure of the system to a wide variety of weather conditions and vibrations while the automobile is in motion are also to be considered.

4

IS : 9264 ( Part I ) - 1979

3.2 The following requirements which apply to the lighting of almost all types of vehicles are of special importance and should be taken into account while deciding on the internal illumination:

a> b)

4 4

4

f) 3.2.1 .

Relatively higher level of illumination for reading because of vibration; Adequate illumination at special locations for safe entry, exit and movement of commuters in passenger-carrying vehicles; Enough lighting for fare collection and ticket issue in buses; Suitable location and/or shielding of the light source so as to protect driver’s vision of the road, from the light falling directly from the light source or reflected light from wind-shield or any other shiny surface; Minimum glare and suitable luminance level for passengers’ eye comfort; and Attractive appearance of vehicle from within.

The other factors to be kept in mind are the internal shape of the vehicle ( which in case of buses will mostly be long and narrow with low ceilings), the varying desires of the passengers and loading of the trucks/ wagons, location of the driver, the other occupants and/or the load to be carried.

3.3 Classification of Vehicles - For the purpose of designing the internal illumination, most vehicles can be classified as under:

a) Luxury buses ( normal and ‘mini’ classes ); b) Normal buses, city and distance ( independent chassis and tractor-

trailer combination; also mini buses ); C) Passenger car, taxi, station wagons and similar vehicles; and d) Trucks and cabs.

NOTE - Special cargo carriers and 3-wheeler ( scooter rickshaws, etc ) are not covered.

4. LEVELS OF ILLUMINATION AND LOCATION OF LIGHT SOURCE

4.1 Certain recommendations about levels of illumination and location of light source are given in Table 1.

5. LAMP FOR INTERNAL LIGHTING

5.1 Lamps for the purposes for internal lighting shall conform to IS : 1606- 1979* or IS : 2418( Parts I and II )-1977T.

*Specification for automobile lamps ( second relrision ). tspecification for tubular fluorescent lamps for general lighting service:

Part I Requirements and tests (first revision ). Part II Standard lamp data sheets (first revision ).

5

IS : 9264 ( Part I ) - 1979

6. LUMINAIRE DETAILS

6.1 The lens of all luminaires shall be matt ( surface ) or clear ( trans- parent ) according to application. obviously preferred.

For passengers comfort, matt is

The choice of mounting the luminaires namely, surface, flush or ressessed mounting, should be considered from both aesthetic and func- tional points of views ( the lighting or stepwells and entries to the wagon at the loading point would normally be flush or recessed-mounted to prevent breakage of the luminaire ).

TABLE I LEVELS OF ILLUMINATION AND LOCATION OF LIGHT SOURCE

SL FUNCTION KIND No.

I%-

MINA-

TION

(1) (2) (3)

i) General vision General in passenger car

ii) General vision in -do- passenger com- partments of bus or for fare col- lection

iii) General console -do- operation and observation

iv) Map reading Local

v) Entry/Exit -do- vi) Individual reading -do-

in a bus vii) Cargo loading General

( Claus.9 4.1 )

LOCATION OF ILLUMINATION LEVEL LIQH~ SOURCE AT THE TASK*

(INLUX) r__-_h_---_-Y Normal/Mini Bus Car Truck/ p__h--7

(4)

Luxury Normal

Behind the driver to either side or middle of the cei- ling Single or in multi- ple rows, longitu- dinally fitted to cei- ling

(5) (6)

- -

160/80/25t 100

(7)

80

Wagons

(8)

Top, behind 1 to either side of driver

Away from the driver$ Step-wells, side wall To- the side and/or above head level Fitted to the ceil- ing, spaced suitably

80 80

200 200

80 80 200 -

- -

-

-

200

- -

-

-

80

200

- -

25

*Task is the location level of the required illuminated object. TIf necessary night lamps to provide 25 lux illumination may be provided. f-hould necessarily be shielded from driver’s eyes and the luminaire should have a

lens with matt surface for diffused lighting.

6