DE9001346U1 - Halogen lamp reflector unit - Google Patents

Description

Patent Trust Company

for electric light bulbs BbH., Munich

Halogen lamp reflector unit

The invention relates to ¹ : a halogen incandescent lamp reflector unit according to the preamble of claim 1.

Halogen lamp reflectors _: . in which

Cer reflector is firmly connected to the halogen lamp, are increasingly used in lighting systems, since they can achieve a much more uniform and locally limited illumination ^A > ^r .

Until now, the lamp in such units was cemented into the reflector or held in the reflector by means of a clamping device that engages a cross rib attached to the pinch. Such a clamping device is listed in DE-PS 26 55 231.

The disadvantage of this type of mounting is that the flange focal distance, i.e. the position of the lamp and so that the filament in the reflector cannot be changed by simple means. Therefore, different reflectors are required depending on whether a wide (flood) or a narrow (spot) light cone is to be produced. In addition,

j£ it is not possible with such a clamp connection,

fe manufacturing tolerances on the reflectors and

Lamps during assembly. Such a

I _I Compensation is absolutely necessary, for example, for faceted reflectors ^ 5, which in this type of

p'\ Reflectors Deviations from the optimal fertility dimensions;.. a much stronger influence on

^ the light emission cones are smaller than those of reflectors with finely structured aluminum surfaces. Therefore, a pilot series had to be produced first in order to be able to determine the optimal installation dimensions.

The object of the invention is to create a fastening for the halogen bulb in the reflector, which enables a change in the support dimension on the halogen bulb-reflector unit using simple means.

The object is achieved by the characterizing features of claim 1. Further advantageous features of the invention can be found in the subclaims.

With the help of the centering disc, it is possible to easily correct any deviations from the nominal installation dimensions that occur when assembling the halogen bulb reflector unit. In addition, "flood" or "spot" radiation beams can be created with the help of the centering disc. gel with only one reflector design or a single halogen lamp type. Specially adapted lamp or reflector designs are no longer required to produce a wide or narrow beam of light.

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Lamp-reflector units with different power levels now only require one reflector version. The corresponding adjustment of reflector and lamp is achieved by the centering disc. For this purpose, the centering disc can be flat or provided with an embossed step, whereby the step can be positive or negative, depending on whether the lamp needs to be raised further out of the reflector or sunk further into the reflector.

In order to achieve the smallest possible deviations in the individual production batches due to the manufacturing tolerances the reflector is provided with a flat circular ring surface in the transition area from the reflector surface to the neck-shaped attachment. In addition, the centering disc has a circular edge. This ensures that the edge of the

Centering disc enables.

The invention is illustrated in more detail with reference to the following figures 1 and 2.

Figures 1 and 2 each show a halogen lamp reflector unit with different focal lengths A1 and A2. Both units consist of a halogen lamp 1 with a schematically shown filament 2, which is connected by a rectangular The pinch seal 3, into which the power supply lines 4 are sealed gas-tight, has four cross ribs 5 on each of the two broad sides. The halogen bulb 1 is located in a faceted

Reflector 6 made of aluminum with a neck-shaped attachment 7 with a round cross-section. The reflector 6 has a flat circular ring surface 8 in the transition area from the reflector surface to the neck-shaped attachment 7. The halogen bulb 1 is held in the reflector 6 by a round fastening pot 9 with a rectangular central opening, which is guided over the neck-shaped attachment 7 of the reflector 6. Snap tabs 11, which are attached to the rectangular opening of the fastening pot 9, through which the end of the pinch 3 is inserted, serve as fastening means. These snap tabs 11 engage between 2 transverse ribs 5 on each side of the pinch 3 and thus ensure a non-detachable connection between the halogen bulb 1 and the reflector 6.

All of the parts of the halogen bulb reflector units shown in Figures 1 and 2 described so far are constructed in exactly the same way. However, the two units also have centering disks 10a and 10b for aligning the lamps, which have a partially different shape. What the two centering disks have in common is a circular edge that rests on the circular ring surface 8 of the reflector 6, and a rectangular opening through which the pinch seal 3 of the lamp 1 is inserted, and whose edge rests on the transition from the pinch seal 3 to the bulb of the lamp 1.

While the centering disk 10a in Figure 1 is completely flat, the centering disk 10b in Figure 2 has a step at the transition to the central opening. This step, which is designed in the direction of the reflector opening, results in the centering disk 10b shown in Figure 2.

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The distance A2 between the filament 2 and the transition area of the
reflector 6 to the neck-shaped extension 7 is larger in the unit in Figure 2 than the distance A1 in

of the unit shown in Figure 1. With the help of centering discs with different heights of negative or positive (with respect to the reflector opening) steps, any desired flange focal distance can be achieved. Depending on the height of the step, the snap tabs 11 then engage between other
Cross ribs 5 on both sides of the lamp pinch 3.

Claims (5)

- 6 Protection claims 1. Halogen incandescent lamp reflector unit with a halogen incandescent lamp (1), the bulb of which is closed by a substantially rectangular pinch (3), the pinch (3) having a transverse rib running perpendicular to the lamp's longitudinal axis on both of its broad sides, and with a reflector (6), at the apex of which a neck-shaped appendage (7) is attached, into which the pinch (3) of the halogen incandescent lamp (1) is inserted, characterized in that further transverse ribs (5) are attached to the broad sides of the pinch (3) parallel to the one transverse rib, and a centering disk (10a, 10b) with a central opening is inserted over the pinch (3) of the halogen incandescent lamp (1), the outer edge of the centering disk on the inside of the reflector (6) and the edge of the central opening on the transition from the pinch (3) to the bulb of the halogen incandescent lamp (1) rests, and a fastening pot (9) is placed over the neck-shaped attachment of the reflector (6), which forms a non-detachable connection between the halogen bulb (1) and the reflector (6) by engaging snap tabs 11 between two transverse ribs (5) on each broad side of the pinch (3). 2. Halogen incandescent lamp reflector unit according to claim 1, characterized in that the reflector (6) has a flat circular ring surface (8) in the transition region from the inner reflector surface to the neck-shaped extension (7) for the flat support of the edge of the centering disk (10a, 10b). 3. Halogen incandescent lamp reflector unit after ir« 9 &igr; t · ···· * I ft he mi · » · ■* Claim 1, characterized in that the centering disc (10a, 10b) has a circular edge. 4. Halogen incandescent lamp reflector unit according to claim 1, characterized in that the centering disk (10a) is flat. 5. Halogen light bulb reflector unit according to claim 1, characterized in that the centering disk (10b) has an embossed step in the transition area to the central opening.