Source: http://www.google.com/patents/US7119483?dq=Frischling
Timestamp: 2017-11-24 02:17:03
Document Index: 95267295

Matched Legal Cases: ['art.\n6', 'art.\n8', 'art.\n11', 'art 12', 'art 14', 'art 12', 'art 14', 'arts 12', 'arts 12', 'arts 12', 'art 64', 'arts 92']

Patent US7119483 - Lamp, in particular for automotive headlights - Google Patents
A lamp includes a burner configured to generate light and a base having a first part connectable to a second part. The first part is configured to hold the burner in a fixed position, and the second part is configured to allow electrical connection to the burner. The first and second base parts are made...http://www.google.com/patents/US7119483?utm_source=gb-gplus-sharePatent US7119483 - Lamp, in particular for automotive headlights
Publication number US7119483 B2
Application number US 10/482,143
PCT number PCT/IB2002/002642
Also published as CN1290138C, CN1524279A, EP1407467A1, US7354186, US20040239226, US20070019423, WO2003005399A1
Publication number 10482143, 482143, PCT/2002/2642, PCT/IB/2/002642, PCT/IB/2/02642, PCT/IB/2002/002642, PCT/IB/2002/02642, PCT/IB2/002642, PCT/IB2/02642, PCT/IB2002/002642, PCT/IB2002/02642, PCT/IB2002002642, PCT/IB200202642, PCT/IB2002642, PCT/IB202642, US 7119483 B2, US 7119483B2, US-B2-7119483, US7119483 B2, US7119483B2
Inventors Mandred Westemeyer, Tilo Stoeckert
US 7119483 B2
A lamp includes a burner configured to generate light and a base having a first part connectable to a second part. The first part is configured to hold the burner in a fixed position, and the second part is configured to allow electrical connection to the burner. The first and second base parts are made of different plastic materials, where the material of the first base part has a higher temperature stability and/or resistance to UV radiation then the material of the second base part. The first and second base parts are connected together by welding and/or bonding using an adhesive.
a burner for generating light, which burner is held in position in a first base part,
which first base part comprises means for holding the burner in position and at least one reference element for positioning the lamp in an automotive headlight,
and comprising a second base part which is connected to the first base part,
which second base part comprises an electrical connection device,
and the first base part and the second base part are at least partly made of plastics and are connected together by means of at least one of welding and bonding using an adhesive,
wherein the first base part and the second base part are made of different plastic materials.
2. The lamp as claimed in claim 1, wherein the first base part and the second base part are welded together by means of plastics welding process without welding aids being provided between the base parts by means of at least one of heat-tool welding, ultrasound welding and friction welding.
3. The lamp as claimed in claim 1, wherein the means for holding the burner in position hold said burner in an orientable manner, said burner being fixed in an oriented position.
4. The lamp as claimed in claim 1, wherein the second base part is composed of a center portion and an end portion, which are connected together by means of a least one of welding and bonding using an adhesive, and the electrical connection device comprises at least one electrical contact element which is fixed between the center portion and the end portion.
5. The lamp as claimed in claim 1, wherein a first plastic material of the first base part has at least one of a higher temperature stability and a resistance to UV radiation then a second plastic material of the second base part.
6. A method of manufacturing lamps, comprising the acts of:
introducing a burner into a first base part comprising at least one reference element for positioning the lamp at an automotive headlight,
connecting the burner to holding means provided at the first base part,
connecting the first base part to a second base part comprising an electrical connection device by means of at least one of welding and bonding using an adhesive, wherein the first base part and the second base part are made of different plastic materials.
7. The method as claimed in claim 6, after said introducing act, further comprising the acts of:
orienting the burner relative to the reference element to form a completed first unit, and
connecting the completed first unit to the second base part.
8. The method as claimed in claim 6, wherein a first plastic material of the first base part has at least one of a higher temperature stability and a resistance to UV radiation then a second plastic material of the second base part.
a burner configured to generate light; and
a base having a first part connectable to a second part; the first part being configured to hold said burner in a fixed position, and the second part being configured to allow electrical connection to the burner;
10. The lamp of claim 9, wherein a first plastic material of the first base part has at least one of a higher temperature stability and a resistance to UV radiation then a second plastic material of the second base part.
11. The lamp of claim 9, wherein the first base part and the second base part are connected together by at least one of welding and bonding using an adhesive.
The upper part and the lower part may be manufactured from the same plastic material. Alternatively, different plastic materials may be used. It is very advantageous, particularly in the case of discharge lamps, to use a combination of plastics that is resistant to high temperatures (i.e. resistant to temperatures above 220° C., preferably even above 250° C.) for the upper part, which is situated closer to the heat source of the burner, and a less temperature-stable (and hence cheaper) plastic for the lower part.
Like the upper part 12, the lower part 14 is made of plastic that is mechanically and electrically stable to temperatures in excess of 220° C. In this example, the plastic is a PPS material with fillers, in this case glass fibers. In operation, a burner accommodated in the base 10 causes a heavy load, in the form of heat as well as UV radiation, to be put on the upper part 12 of the base 10. For this reason, the above-mentioned thermally highly stable plastic is preferably used for this part. To reduce costs or in view of other, for example, mechanical requirements, the lower base part 14 may alternatively be manufactured from a different plastics material. The material used for the lower base part does not have to meet the same requirements regarding temperature stability and resistance to UV radiation. As a result, use can generally be made of a cheaper material. Regard should be had, however, to the fact that the two different plastic materials can be welded together or bonded together using an adhesive.
Suitable welding processes are ultrasound welding processes which are known per se. In these processes, the parts 12, 14 to be welded are joined and 20–40 kHz oscillations in the ultrasound range are coupled in. The resultant friction between the parts causes the material to melt at the places of contact and subsequently unite. As is known from the literature on this subject, this can additionally be enhanced if the parts to be united comprise so-termed “energy directing portions”, i.e. projecting wedges or ridges that melt first and thus cause the parts to be interconnected.
The parts 12, 14 can also be interconnected by means of heated tool welding, with or without the supply of hot air. In this method, the parts to be interconnected are arranged opposite each other and a so-termed “heating mirror” which is heated to approximately 500° C. and, if necessary, equipped with hot air outlets, is arranged between them. The heat radiation and the possible flow of hot air causes specially formed lips on the surface of the plastic parts to melt. After removal of the heating mirror, the parts 12, 14 are joined and welded together. Alternatively, devices may be provided that take in air which is used to heat the surfaces of the parts to be welded together.
In the example shown in FIG. 3, the burner 26 is of the two-sided type. Said burner comprises an elongated glass bulb at the ends of which electrical contacts are provided. Said glass bulb accommodates a discharge vessel 32 in which the actual gas discharge takes place. At the lower side, the burner 26 ends in a tube 34 accommodating a conductor 36 for the electrical connection, which conductor is connected to the contact 22. At the other end of the burner 26 there is the back contact 28 which is led back into the base 10, where it is connected to the ring contact 20, through the tube 30. Back contact 28 and conductor 36 are welded to the ring contact 20 and the central contact 22, respectively.
In FIGS. 10–12, the upper base part 64 accommodating the burner 62, and the two lower base parts 92, 66 are shown separately once again.
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U.S. Classification 313/318.01, 313/318.08, 313/318.12
International Classification F21Y101/00, H01J5/56, F21W101/10, F21V19/00, H01J5/54, F21S8/10, H01J9/30, H01J9/34
Cooperative Classification H01J5/56, H01J9/30, H01J9/34, H01J5/54
European Classification H01J9/30, H01J5/56, H01J9/34, H01J5/54
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WESTEMEYER, MANFRED;STOECKERT, TILO;REEL/FRAME:015384/0208;SIGNING DATES FROM 20030130 TO 20030206