WO1992008241A1 - Method for emission of coloured light by an electric lamp - Google Patents

Method for emission of coloured light by an electric lamp Download PDF

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Publication number
WO1992008241A1
WO1992008241A1 PCT/BR1991/000023 BR9100023W WO9208241A1 WO 1992008241 A1 WO1992008241 A1 WO 1992008241A1 BR 9100023 W BR9100023 W BR 9100023W WO 9208241 A1 WO9208241 A1 WO 9208241A1
Authority
WO
WIPO (PCT)
Prior art keywords
colour
light
filament
emission
filter
Prior art date
Application number
PCT/BR1991/000023
Other languages
French (fr)
Inventor
Arthur Jorge Braga De Freitas
Original Assignee
Arthur Jorge Braga De Freitas
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 Arthur Jorge Braga De Freitas filed Critical Arthur Jorge Braga De Freitas
Publication of WO1992008241A1 publication Critical patent/WO1992008241A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • 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

Definitions

  • This invention relates to a device that allows electric lamps with white or transparent bulb to emit different colours, as a function of the internal covering of the filament that was selected to be energized.
  • lamps with one filament divided by taps in several segments ujith independent control capability mill be considered as having several filaments, one for each independent segment.
  • the colour lamps available presently does not matter if intended to application to domestic, artistical, industrial, decorative, public way illumination or automotive use produce the effect of colour by passing the light genera ted in the filament through the bulb or glass of the reflector apparatus, with no means of changing the colour emitted, unless with a mechanical device to change the colour of the external lens, as used in light guns for artistical purposes.
  • the present invention describes a method to change the colour of, the light, by placing a light filter or any other translucid material, in the desired colour, in such a way that the light beam generated by the filament crosses it before leaving the lamp.
  • Each filament has an individual control to be energized and has a colour of filter associa te d to it.
  • lamps with only one filament but using an internal filter, as described here, without the need to use a colour bulb is a possible embodiment of this, invention.
  • the invention is diagramatically illustrated , in the appended drauiings, that shows by way of example, two possible embodiments of the invention.
  • Figure 1 shows an embodiment appropriated for lamps that presents an internal reflector for one of the filaments, as those used for automotive headlight lamps.
  • Figure 2 shows another possible embodiment of the invention, with number of filaments taken at random.
  • Figure 3 shows in detail the filament embraced by the filter, with two examples of possible embodiments.
  • the filter or any other material with the property of changing the colour of the light (4) intercept the beams that leave the filament, reflected by the internal reflector or no t , changing the colour to the desired one.
  • Other filaments may be provided or not with filters (5), in accordance with the desired application.
  • the control of the colour of the light to be emitted by the lamp is done by the energization of the filament associated to the filter of this colour.
  • the way the filter is fixed inside the bulb (6) is not relevant, provided that it not blocks out significant portion of the light produced by the filament.
  • the filaments (1) are embraced by small bulbs (2), fixed by any internal element (4) located internaly to the external bulb (3). These small internal bulbs (2) intercepts the light emitted by the filaments giving them the desired colour.
  • the colour of the light resulted from this lamp is defined by the control of which filament is energized in each instant, including the combination of the effects of two or more filaments and filters.
  • the filter embracing the filament (l) may almost close in the extremities (2) in order to avoid the light from passing without having its colour changed or may have opaque elements (3) in the extremities, in order to avoid the light beam to pass unless through the filter.
  • the light of the filament (4) in these situations will present the colour of the filter associated to it.

Abstract

Electric lamp that produces different colour lights by selecting to energize the filament associated with each of the colour filters, located inside the bulb, in such a way that the light emitted by the filaments crosses theses filters, assuming the desired colour. The bulb itself and external reflectors, if any, may be white or transparent, with no effect on the colour of the light emitted.

Description

Description of the invention "METHOD FOR EMISSION OF COLOURED LIGHT BY AN ELECTRIC LAMP".
This invention relates to a device that allows electric lamps with white or transparent bulb to emit different colours, as a function of the internal covering of the filament that was selected to be energized.
In this text, to facilitate the description of the invention, lamps with one filament divided by taps in several segments ujith independent control capability mill be considered as having several filaments, one for each independent segment.
The colour lamps available presently, does not matter if intended to application to domestic, artistical, industrial, decorative, public way illumination or automotive use produce the effect of colour by passing the light genera ted in the filament through the bulb or glass of the reflector apparatus, with no means of changing the colour emitted, unless with a mechanical device to change the colour of the external lens, as used in light guns for artistical purposes.
The present invention describes a method to change the colour of, the light, by placing a light filter or any other translucid material, in the desired colour, in such a way that the light beam generated by the filament crosses it before leaving the lamp. Each filament has an individual control to be energized and has a colour of filter associa te d to it. Obviously, lamps with only one filament but using an internal filter, as described here, without the need to use a colour bulb is a possible embodiment of this, invention.
The invention is diagramatically illustrated , in the appended drauiings, that shows by way of example, two possible embodiments of the invention.
Figure 1 shows an embodiment appropriated for lamps that presents an internal reflector for one of the filaments, as those used for automotive headlight lamps.
Figure 2 shows another possible embodiment of the invention, with number of filaments taken at random.
Figure 3 shows in detail the filament embraced by the filter, with two examples of possible embodiments. In accordance with one embodiment of the present invention (figure 1) applied to a lamp with a reflector (1) internal to the bulb (3) intended to partly block the light of one of the filaments (2) in such a way that it concentrate the beam in a desired direction, the filter or any other material with the property of changing the colour of the light (4) intercept the beams that leave the filament, reflected by the internal reflector or no t , changing the colour to the desired one. Other filaments may be provided or not with filters (5), in accordance with the desired application.
The control of the colour of the light to be emitted by the lamp is done by the energization of the filament associated to the filter of this colour. The way the filter is fixed inside the bulb (6) is not relevant, provided that it not blocks out significant portion of the light produced by the filament.
In accordance with other possible embodiment of this invention (figure 2) the filaments (1) are embraced by small bulbs (2), fixed by any internal element (4) located internaly to the external bulb (3). These small internal bulbs (2) intercepts the light emitted by the filaments giving them the desired colour.
The colour of the light resulted from this lamp is defined by the control of which filament is energized in each instant, including the combination of the effects of two or more filaments and filters.
The material that embraces the filament, giving colour to the light, must be installed in such a way that all the beams leaving the filament associated with that filter must cross it in order to have its colour changed. Two possible implementations giving this effect are shown (figure 3) nevertheless others may be used without changing the object of the present invention.
The filter embracing the filament (l) may almost close in the extremities (2) in order to avoid the light from passing without having its colour changed or may have opaque elements (3) in the extremities, in order to avoid the light beam to pass unless through the filter. The light of the filament (4) in these situations will present the colour of the filter associated to it.

Claims

CLA IMS
1- "METHOD FOR EMISSION OF COLOURED LIGHT BY AN ELECTRIC LAMP", characterized by the installation of a light filter or any other material able to change the colour of the light beam that crosses it and situated inside the external bulb of the lamp in such a way that intercept the light emitted by the filament.
2- "METHOD FOR EMISSION OF COLOURED LIGHT BY AN ELECTRIC LAMP", as in claim 1, characterized by the possibility of several associations of filters and filaments inside the bulb, alowing the selection of the colour of the lamp by the energization of a selected filament associated to the filter of the desired colour.
PCT/BR1991/000023 1990-10-31 1991-10-30 Method for emission of coloured light by an electric lamp WO1992008241A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9005536A BR9005536A (en) 1990-10-31 1990-10-31 METHOD FOR EMISSION OF COLORED LIGHT BY ELECTRIC LAMP
BRPI9005536 1990-10-31

Publications (1)

Publication Number Publication Date
WO1992008241A1 true WO1992008241A1 (en) 1992-05-14

Family

ID=4050665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1991/000023 WO1992008241A1 (en) 1990-10-31 1991-10-30 Method for emission of coloured light by an electric lamp

Country Status (2)

Country Link
BR (1) BR9005536A (en)
WO (1) WO1992008241A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725559A1 (en) * 1994-10-07 1996-04-12 Monserrat Bernard Music-operated 3-filament colour interplay incandescent lamp
DE19602252A1 (en) * 1995-09-22 1997-03-27 Branimir Marinkic Multi-colour lamp
DE10024709A1 (en) * 2000-05-18 2001-11-29 Steag Rtp Systems Gmbh Lamp for thermal treatment of substrates has at least two filaments, each with at least one winding section extending along longitudinal lamp axis and arranged adjacent to other filament
WO2004044945A1 (en) * 2002-11-11 2004-05-27 Young-Ill Chon Apparatus and method for controlling headlight in vehicle and headlight lamp having multifunction structure
GB2397942A (en) * 2003-02-03 2004-08-04 Jonathan Richard Swift Multi-coloured light bulb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258631A (en) * 1966-06-28 Lamp having a colored bulb
US4839553A (en) * 1987-12-21 1989-06-13 Gte Products Corporation Reflector lamp having complementary dichroic filters on the reflector and lens for emitting colored light
EP0371553A1 (en) * 1988-11-29 1990-06-06 Koninklijke Philips Electronics N.V. Coloured electric lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258631A (en) * 1966-06-28 Lamp having a colored bulb
US4839553A (en) * 1987-12-21 1989-06-13 Gte Products Corporation Reflector lamp having complementary dichroic filters on the reflector and lens for emitting colored light
EP0371553A1 (en) * 1988-11-29 1990-06-06 Koninklijke Philips Electronics N.V. Coloured electric lamp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725559A1 (en) * 1994-10-07 1996-04-12 Monserrat Bernard Music-operated 3-filament colour interplay incandescent lamp
DE19602252A1 (en) * 1995-09-22 1997-03-27 Branimir Marinkic Multi-colour lamp
DE10024709A1 (en) * 2000-05-18 2001-11-29 Steag Rtp Systems Gmbh Lamp for thermal treatment of substrates has at least two filaments, each with at least one winding section extending along longitudinal lamp axis and arranged adjacent to other filament
DE10024709B4 (en) * 2000-05-18 2008-03-13 Steag Rtp Systems Gmbh Device for the thermal treatment of substrates
WO2004044945A1 (en) * 2002-11-11 2004-05-27 Young-Ill Chon Apparatus and method for controlling headlight in vehicle and headlight lamp having multifunction structure
GB2397942A (en) * 2003-02-03 2004-08-04 Jonathan Richard Swift Multi-coloured light bulb

Also Published As

Publication number Publication date
BR9005536A (en) 1991-02-26

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