FR2716254A1 - Closed motor vehicle headlamp with internal moisture absorption - Google Patents
Closed motor vehicle headlamp with internal moisture absorption Download PDFInfo
- Publication number
- FR2716254A1 FR2716254A1 FR9401834A FR9401834A FR2716254A1 FR 2716254 A1 FR2716254 A1 FR 2716254A1 FR 9401834 A FR9401834 A FR 9401834A FR 9401834 A FR9401834 A FR 9401834A FR 2716254 A1 FR2716254 A1 FR 2716254A1
- Authority
- FR
- France
- Prior art keywords
- cartridge
- projector
- projector according
- opening
- motor vehicle
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/30—Ventilation or drainage of lighting devices
- F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
La présente invention est relative aux projecteurs essentiellement fermés de véhicule automobile, à adsorption d'humidité interne. The present invention relates to essentially closed headlights of a motor vehicle, with internal moisture adsorption.
Par essentiellement fermés, on entend des projecteurs dont les boîtiers et glaces sont scellés ou semi-scellés, et dont les volumes intérieurs ne sont normalement pas en communication avec l'atmosphère environnante. De tels projecteurs essentiellement fermés peuvent néanmoins comprendre des soupapes de respiration mettant en communication l'intérieur et l'extérieur des projecteurs, lorsque la pression interne est trop élevée. By essentially closed, we mean projectors whose housings and windows are sealed or semi-sealed, and whose interior volumes are not normally in communication with the surrounding atmosphere. Such essentially closed projectors may nevertheless include breathing valves connecting the interior and exterior of the projectors when the internal pressure is too high.
Il est déjà connu de disposer à l'intérieur de projecteurs essentiellement fermés des mousses adsorbantes destinées à éliminer l'humidité interne issue de la peinture ou enfermée lors du montage. A moins d'un démontage complet du projecteur, ces mousses adsorbantes ne sont pas changées, mêne lorsqu'elles sont saturées. It is already known to have, inside essentially closed projectors, adsorbent foams intended to eliminate the internal humidity originating from the paint or enclosed during assembly. Unless the projector is completely dismantled, these adsorbent foams are not changed, even when they are saturated.
On connaît en outre, par la demande de brevet français publiée sous le numéro 2 183 934, un projecteur dont le volume intérieur est en communication permanente avec l'atmosphère environnante à travers un élément adsorbant qui fixe l'humidité. Cet élément évite que l'humidité de l'air externe ne rentre à l'intérieur du projecteur. We also know, from the French patent application published under the number 2 183 934, a projector whose internal volume is in permanent communication with the surrounding atmosphere through an adsorbent element which fixes the humidity. This prevents moisture from the outside air from entering the interior of the projector.
L'invention a quant à elle pour but de proposer des moyens permettant de sécher le volume interne d'un projecteur de véhicule automobile essentiellement fermé, afin d'y réduire la formation de vapeur condensée, tout en permetttant à un opérateur de changer le matériau adsorbant sans avoir à démonter le projecteur. The object of the invention is to propose means for drying the internal volume of an essentially closed headlight of a motor vehicle, in order to reduce the formation of condensed vapor therein, while allowing an operator to change the material. adsorbent without having to dismantle the projector.
A cet effet, l'invention propose un projecteur de véhicule automobile de type essentiellement fermé, présentant en son intérieur un matériau adsorbant l'humidité, caractérisé en ce que ce matériau se présente sous la forme d'une cartouche fixée de manière amovible et étanche dans une ouverture du projecteur. To this end, the invention provides a motor vehicle headlamp of the essentially closed type, having inside a moisture-absorbing material, characterized in that this material is in the form of a cartridge fixed in a removable and sealed manner. in a projector opening.
D'autres caractéristiques et avantages ressortiront encore de la description qui suit d'un mode de réalisation particulier de l'invention. Cette description est purement illustrative et non limitative. Other characteristics and advantages will emerge from the following description of a particular embodiment of the invention. This description is purely illustrative and not limiting.
Elle doit être lue en regard de la figure unique annexée, qui est une vue en coupe d'un projecteur conforme à un mode de réalisation particulier de l'invention.It should be read with reference to the single appended figure, which is a sectional view of a projector according to a particular embodiment of the invention.
Le projecteur essentiellement fermé représenté sur cette figure comporte classiquement un boîtier 1 destiné à recevoir au moins un réflecteur et une lampe. Ce boîtier 1 est fermé de façon étanche par une glace 2. Il comporte en outre une soupape de respiration (non représentée). The essentially closed headlamp shown in this figure conventionally comprises a housing 1 intended to receive at least one reflector and one lamp. This case 1 is closed in leaktight manner by a crystal 2. It further comprises a breathing valve (not shown).
Une cartouche 3 de matériau adsorbant d'humidité est fixée de façon amovible à l'intérieur du projecteur. A cartridge 3 of moisture-adsorbing material is removably fixed inside the projector.
Cette cartouche 3 de matériau adsorbant est reçue dans une enveloppe 4 s'étendant à partir d'une ouverture 5 que présente le boîtier 1 ou la glace 2, vers l'intérieur du projecteur. This cartridge 3 of adsorbent material is received in an envelope 4 extending from an opening 5 presented by the housing 1 or the lens 2, towards the interior of the projector.
La cartouche 3 et cette enveloppe 4 sont fixées sur ladite ouverture 5 par des moyens du type à baïonnette. The cartridge 3 and this envelope 4 are fixed to said opening 5 by means of the bayonet type.
Le projecteur comporte en outre des moyens assurant au niveau de l'ouverture 5 l'étanchéité entre l'intérieur et l'extérieur. Ces moyens comportent un obturateur externe 9 ainsi que des moyens 6 internes constitués par un joint élastique 7 entourant une jupe de serrage 8 dans laquelle l'enveloppe 4 est reçue, cette jupe de serrage 8 prolongeant l'ouverture 5. Le joint élastique 7 comprime la jupe 8 contre la base de la cartouche 3. The projector also comprises means ensuring at the opening 5 the seal between the interior and the exterior. These means comprise an external shutter 9 as well as internal means 6 constituted by an elastic seal 7 surrounding a tightening skirt 8 in which the envelope 4 is received, this tightening skirt 8 extending the opening 5. The elastic seal 7 compresses the skirt 8 against the base of the cartridge 3.
La cartouche 3 est une pièce moulée en un matériau adsorbant l'humidité, tel que le gel de silice, les zéolites, etc. The cartridge 3 is a part molded from a moisture-absorbing material, such as silica gel, zeolites, etc.
L'enveloppe 4 est alors par exemple pourvue d'une multiplicité d'orifices 4a par lesquels la cartouche 3 est en contact avec l'air à l'intérieur du projecteur. The envelope 4 is then for example provided with a multiplicity of orifices 4a through which the cartridge 3 is in contact with the air inside the projector.
En variante, la cartouche 3 est en un matériau granulaire, l'enveloppe 4 étant dépourvue d'orifices, mais perméable à la vapeur d'eau. As a variant, the cartridge 3 is made of a granular material, the envelope 4 being devoid of orifices, but permeable to water vapor.
De façon particulièrement avantageuse, l'extrémité de la cartouche 3 qui est opposée à l'ouverture 5, est située dans une zone vers laquelle lesdits moyens optiques dégagent une certaine quantité de chaleur, par exemple à proximité de la lampe du projecteur. Cette extrémité libre est alors régénérée par évaporation. In a particularly advantageous manner, the end of the cartridge 3 which is opposite the opening 5, is located in an area to which said optical means give off a certain amount of heat, for example near the projector lamp. This free end is then regenerated by evaporation.
Conformément à d'autres aspects avantageux de l'invention, la cartouche 3 est en un matériau changeant de couleur ou de teinte selon le degré de saturation qu'il présente; l'obturateur 9 est au moins en partie transparent. In accordance with other advantageous aspects of the invention, the cartridge 3 is made of a material changing color or hue according to the degree of saturation which it exhibits; the shutter 9 is at least partially transparent.
Ainsi, un opérateur peut savoir s'il est ou non nécessaire de substituer à la cartouche en place une cartouche non encore utilisée, par une simple observation de la teinte de la cartouche 3 à travers son obturateur transparent 9. Thus, an operator can know whether or not it is necessary to replace the cartridge in place with an unused cartridge, by a simple observation of the color of the cartridge 3 through its transparent shutter 9.
Dans le cas précédemment évoqué où l'extrémité libre de la cartouche est disposée à proximité des moyens optiques du projecteur, l'humidité adsorbée par la cartouche est principalement concentrée dans sa partie au voisinage de l'obturateur 9, de sorte que le changement de teinte qu'observe l'opérateur intervient avant que l'ensemble de la cartouche 3 ne soit réellement saturé. In the previously mentioned case where the free end of the cartridge is disposed near the optical means of the projector, the moisture adsorbed by the cartridge is mainly concentrated in its part in the vicinity of the shutter 9, so that the change in shade observed by the operator before the entire cartridge 3 is actually saturated.
De façon également particulièrement avantageuse, l'ouverture 5 est située dans une zone du projecteur, qui n'est pas apparente lorsque le projecteur est en place sur une carrosserie de véhicule, par exemple sur le fond du boîtier 1. Also particularly advantageously, the opening 5 is located in an area of the headlight, which is not visible when the headlight is in place on a vehicle body, for example on the bottom of the housing 1.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9401834A FR2716254B1 (en) | 1994-02-17 | 1994-02-17 | Motor vehicle headlamp, essentially closed type, with internal moisture adsorption. |
IT1995RM000024U IT235566Y1 (en) | 1994-02-17 | 1995-02-14 | AUTOMATIC PROJECTOR OF SUBSTANTIALLY CLOSED TYPE, INTERNAL HUMIDITY ABSORPTION. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9401834A FR2716254B1 (en) | 1994-02-17 | 1994-02-17 | Motor vehicle headlamp, essentially closed type, with internal moisture adsorption. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2716254A1 true FR2716254A1 (en) | 1995-08-18 |
FR2716254B1 FR2716254B1 (en) | 1996-05-10 |
Family
ID=9460197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9401834A Expired - Fee Related FR2716254B1 (en) | 1994-02-17 | 1994-02-17 | Motor vehicle headlamp, essentially closed type, with internal moisture adsorption. |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2716254B1 (en) |
IT (1) | IT235566Y1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1447620A3 (en) * | 2003-02-15 | 2004-10-13 | Dr. Ing. h.c. F. Porsche Aktiengesellschaft | Lighting apparatus with moisture absorbing material |
DE102004007355A1 (en) * | 2004-02-16 | 2005-09-01 | Volkswagen Ag | Lamp for a motor vehicle has a lamp casing to hold light-emitting devices and optical devices for generating a bundle of light |
US8425099B2 (en) | 2010-04-23 | 2013-04-23 | Visteon Global Technologies, Inc. | Ventilating unit with moisture absorber, especially for a motor vehicle headlight |
DE102012008089A1 (en) * | 2012-04-21 | 2013-10-24 | Volkswagen Aktiengesellschaft | Lighting device e.g. headlight, for car, has drying agent interchangeably arranged in interior space of device, where display device, humidity sensor and hygroscope measure and/or display air humidity in interior space of device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2183934A1 (en) * | 1972-05-08 | 1973-12-21 | Westfaelische Metall Industrie | |
FR2232465A1 (en) * | 1973-06-07 | 1975-01-03 | Bosch Gmbh Robert | |
FR2602574A1 (en) * | 1986-08-07 | 1988-02-12 | Hella Kg Hueck & Co | PROJECTOR FOR VEHICLES, ESPECIALLY FOR MOTOR VEHICLES |
-
1994
- 1994-02-17 FR FR9401834A patent/FR2716254B1/en not_active Expired - Fee Related
-
1995
- 1995-02-14 IT IT1995RM000024U patent/IT235566Y1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2183934A1 (en) * | 1972-05-08 | 1973-12-21 | Westfaelische Metall Industrie | |
FR2232465A1 (en) * | 1973-06-07 | 1975-01-03 | Bosch Gmbh Robert | |
FR2602574A1 (en) * | 1986-08-07 | 1988-02-12 | Hella Kg Hueck & Co | PROJECTOR FOR VEHICLES, ESPECIALLY FOR MOTOR VEHICLES |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1447620A3 (en) * | 2003-02-15 | 2004-10-13 | Dr. Ing. h.c. F. Porsche Aktiengesellschaft | Lighting apparatus with moisture absorbing material |
DE102004007355A1 (en) * | 2004-02-16 | 2005-09-01 | Volkswagen Ag | Lamp for a motor vehicle has a lamp casing to hold light-emitting devices and optical devices for generating a bundle of light |
US8425099B2 (en) | 2010-04-23 | 2013-04-23 | Visteon Global Technologies, Inc. | Ventilating unit with moisture absorber, especially for a motor vehicle headlight |
DE102012008089A1 (en) * | 2012-04-21 | 2013-10-24 | Volkswagen Aktiengesellschaft | Lighting device e.g. headlight, for car, has drying agent interchangeably arranged in interior space of device, where display device, humidity sensor and hygroscope measure and/or display air humidity in interior space of device |
Also Published As
Publication number | Publication date |
---|---|
FR2716254B1 (en) | 1996-05-10 |
ITRM950024U1 (en) | 1996-08-14 |
IT235566Y1 (en) | 2000-07-12 |
ITRM950024V0 (en) | 1995-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20051031 |