GB438830A - Improvements in or relating to electric incandescent lamps for vehicle illumination - Google Patents

Improvements in or relating to electric incandescent lamps for vehicle illumination

Info

Publication number
GB438830A
GB438830A GB35816/34A GB3581634A GB438830A GB 438830 A GB438830 A GB 438830A GB 35816/34 A GB35816/34 A GB 35816/34A GB 3581634 A GB3581634 A GB 3581634A GB 438830 A GB438830 A GB 438830A
Authority
GB
United Kingdom
Prior art keywords
filaments
projector
lamp
incandescent lamps
filament
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.)
Expired
Application number
GB35816/34A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB438830A publication Critical patent/GB438830A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

438,830. Electric incandescent lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec. 13, 1934, No. 35816. Convention date, Dec. 22, 1933. [Class 39 (ii)] An illumination projector device for a vehicle comprises a multi-filament incandescent lamp, Figs. 5 and 6, having filaments arranged normally to each other, the relative position of the filaments being such that, when the lamp is arranged in the working position in the projector, the main filament is normal to the road and the auxiliary filament lies parallel to the road at some distance above the horizontal median plane of the bulb. The filaments have straight axes and are arranged in T-form, the horizontal limb of the T being inclined to the lamp axis. The projector has a front disc provided with normal prism-like corrugations and the focus of the reflector may be located in the vertical limb of the T.
GB35816/34A 1933-12-22 1934-12-13 Improvements in or relating to electric incandescent lamps for vehicle illumination Expired GB438830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE438830X 1933-12-22

Publications (1)

Publication Number Publication Date
GB438830A true GB438830A (en) 1935-11-25

Family

ID=6507219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35816/34A Expired GB438830A (en) 1933-12-22 1934-12-13 Improvements in or relating to electric incandescent lamps for vehicle illumination

Country Status (2)

Country Link
FR (1) FR782615A (en)
GB (1) GB438830A (en)

Also Published As

Publication number Publication date
FR782615A (en) 1935-06-07

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