EP2399268A1

EP2399268A1 - Electric lamp having an outer bulb and an installed lamp

Info

Publication number: EP2399268A1
Application number: EP09779425A
Authority: EP
Inventors: Roland Stark
Original assignee: Osram GmbH
Current assignee: Osram GmbH
Priority date: 2009-05-07
Filing date: 2009-05-07
Publication date: 2011-12-28
Also published as: WO2010127705A1; CN102422377A

Abstract

The invention relates to a lamp (1) comprising a bulb (4) having a pinch (5), said bulb being mounted in the opening of a lamp holder (50) by means of at least one mounting clip (20). The clip comprises a base plate (20) having a central window (22) and a plurality of spring lugs (25, 26) serving as spacers relative to the wide side of the pinch in the bulb. The clip also has barbed hooks (24) and side walls.

Description

Title: Electric lamp with an outer bulb and a built-in lamp

Technical area

The invention relates to a lamp according to the preamble of claim 1. The invention relates in particular to an electric lamp with base, in particular a lamp ordering from a arranged in an outer bulb integral lamp, wherein the base is electrically connected to power supply wires. In particular, the invention relates to a single-capped electric lamp with an outer bulb held in a base and at least one integral bulb disposed within the outer bulb. Such halogen incandescent lamps are intended in particular for operation on high voltage (HV) with typically 100 to 250 volts.

State of the art

EP 1 009 013 discloses a holder for a piston in the opening of a base, which consists of a metallic mounting clip into which the piston is pushed with its pinch. The mounting clip is a U-shaped curled spring plate.

In such a construction, there is a risk that the piston slips out of the base stone. Presentation of the invention

The object of the present invention is to safely and reliably accomplish assembly of a piston in a socket by means of mounting clip.

This object is achieved by the characterizing features of claim 1.

Particularly advantageous embodiments can be found in the dependent claims,

The invention ensures the simple and reliable manufacture of a lamp, consisting of a pinch with a pinch and a base that holds the piston in an opening at its pinch. In particular, the invention provides a single ended electric lamp with an outer bulb fixed to a pedestal and an integral lamp disposed within the outer bulb which is robust and easy to manufacture. Preferably, the lamp or built-in lamp is a high-voltage halogen incandescent lamp, wherein at least two pins act as power supply wires. The lamp can also be a high-pressure discharge lamp.

The lamp or integral lamp consists essentially of a hermetically sealed lamp vessel or bulb with pinch, of at least one light source {filament or arc between two electrodes} and a power supply system for the light source, which usually has two external power supply lines, which are axially parallel from the pinch protrude. The light source is usually a luminous element, but it can also be a discharge arc between two electrodes. In the following the lighting means for the sake of simplicity is always described as a luminous body. It is connected via internal power supply lines and, if necessary, films to the external power supply lines.

The power supply system connects the arranged in the interior of the Lairspengefäßes filament with an arranged outside the lamp vessel base, which is to be connected to a power source. For example, the power feeding circuit consists of inner power supply wires, fusing films, and outer power supply wires, wherein the aligned ends of the inner and outer power supply wires and the fusing films connecting the power supply wires are fused in the lamp squeeze. Relevant to the invention is only the pinch and the outwardly projecting wires of the external power supply lines. The piston is usually filled with an inert gas and a halogen additive. Instead of an incandescent lamp, a high-pressure discharge lamp can be used in particular as a built-in lamp, similar to that described in DE-A 32 32 207.

The joke of the invention is that the Stromzufüh- rur.gen not be held, but that is prevented by locking springs on an undercut in the base stone and the pinch, that the piston from the base stone, usually a ceramic part, migrates out or pulled out. The spring plate parts of the mounting clip achieve an axially aligned alignment of the piston. In this way, a simple and safe kittlosen assembly of pistons and in particular of built-in lamps on pedestals or ceramic lamps carriers and ensured. As piston is here understood a one-piece piston or the built-in lamp of a lamp with an outer bulb.

The piston is fixed and held in the lamp support / base stone by using two spring plate parts. First, the Federblechteile be added to the base stone, the Federblechteil is essentially a plate-like body, with a side facing away from the pinch and an inner side facing the pinch. The main body has an approximately central window, cut from the frame and from the flesh of the window, a first resilient part or spring tab, hereinafter referred to as barbs, projects outwardly inclined. The main body also has inwardly facing Federteiie or second spring tabs. These act as spacers in the direction of pinching. There are at least two spring parts, wherein at least one spring member is set to the upper edge and a spring member to the lower edge of the base plate. With above here is meant the direction to the piston, with below the direction to the base. Both spring parts act springs inwards. Preferably, it is a set of four spring parts, which are arranged symmetrically to the center of the base plate,

In particular, the upper springs are bent inwards, so that the Eisnetzen of the piston is facilitated. The lower springs are simply pointing diagonally downwards.

This set of spring tabs fixes the piston in the area of the pinch. The piston is aligned axially with the base. In this case, preferably two equal ⁿ ö ¬

used each symmetrical mounting clips, each on a broad side of the pinch. Such a system compensates for any component tolerances. The piston is still held elastically. Thus, the risk of breakage of the piston is minimized under impact load.

Preferably, the pinch has an outwardly projecting knob or bead on each broadside. When joining the piston in the base stone engages here or the upper spring parts of the spacer. As a result, the piston is locked in the axial direction.

The opening of the base stone also has an axis-parallel undercut. At this snaps the barb part, so that the mounting clip is fixed even in the opening and can not be pulled out.

In principle, although the barb portion and the undercut can be dispensed with, the reliability of the holder is thereby decisively improved. In principle, can also be dispensed with the bead, but also applies hereby that the bracket is significantly improved.

The novel mounting clip may also preferably have one or two side wings, which are angled 90 ° to the base plate so that they point in the direction of the narrow side of the pinch. Preference is given to two symmetrical side wings. These are also designed as spring parts. In this case, a spring tongue is preferably attached to the upper and lower ends of the Seitenteiis. Both show essentially inwards, towards the narrow side of the pinch. The spring parts are preferably so narrow that they correspond at most to half the width of the narrow side.

Preferably, both mounting clips have two such side parts, so that a secure centering is ensured even in the direction of the narrow sides.

Preferably, the upper spring tongue is bent like a trough to facilitate the insertion of the piston. The lower spring tongue is directed obliquely downwards.

A particular advantage of this mounting system is that the heat dissipation from the piston greatly reduced. This increases energy efficiency, especially in the case of the use of a built-in lamp. This is especially true if an IRC coating is used on the piston. The system is preferred for low power lamps up to about 150W.

Brief description of the drawings

In the following, the invention will be explained in more detail with reference to several embodiments. The figures show:

Figure 1 is a schematic representation of a lamp according to the invention in side view;

Figure 2 is a section through a lamp in the axial direction (2a) and rotated by 90 ° to (2b) and transverse to the axis in the amount of the pinch (2c);

FIG. 3 is a perspective view of a mounting clip;

Figure 4 shows a detail of the base stone with built-in piston and mounting clip (axial section through broad side of the pinch); Figure 5 shows a detail of the base stone with built-in piston and mounting clip (axial section through the narrow side of the pinch}.

Preferred embodiment of the invention

FIG. 1 shows a lamp 1 according to the invention. FIG. 1 shows the lamp 1 completely. An outer bulb 3 is held in a base 2 of the commercially available type E27 with a ceramic base or bulb holder 50 and screw member 51 fastened thereto. Within the Außenkoi- bens 3 is a built-in lamp 4 is arranged. The built-in lamp 4 is designed as a so-called high-voltage halogen incandescent lamp and known as such from the prior art.

The built-in lamp 4 has a longitudinal axis A and is equipped with a single pinch 5, protrude from the pin-like socket contacts 13. These are connected to the actual borrowed socket leads 14 (Figure 2). The pinch has two broad sides 6 and two narrow sides 7. The narrow sides 7 are widened as usual double-T-shaped or I-shaped. On each broad side, a bead 8 is arranged transversely to the axis, see FIG. 4.

The built-in lamp 4 is, for example, a one-sided pinched halogen incandescent lamp with a lamp vessel 10. The luminous element 9 is electrically conductively connected to the base 2 via a power supply system. The power supply system consists of inner power supply wires 11 connected to the luminous element 9, sealing films 12 and outer power supply wires 13. The ends of the inner power supply wires 11 facing away from the luminous element 9, the sealing films 12 and Melt-facing ends of the outer Stromzufüh- wire rods 13 are in the pinch seal 5, which closes the lamp vessel 10, melted.

The lamp vessel 10 is filled with an inert gas and a halogen additive. At its opposite end of the pinch seal 5, the lamp vessel 10 is melted off (14). The lamp vessel 10 is thus hermetically sealed to the outside,

The built-in lamp 4 is held by two mounting clips 20, see Figure 3 to 5. The two mounting clips 20 are preferably identical, but need not necessarily be. Each has a plate-like base 21, which is designed substantially flat and rectangular. Central is a rectangular window 22 is arranged therein. From the frame 23 of the window, a spring tab extends as a barb 24 with spring action obliquely outward.

At the upper (30) and lower (31) edge of the base plate, resilient spacers 25, 26 extend up and down. Two upper spacers 25 are bent approximately in a U-shape so that their free end 27 points downwards. Two lower spacers 26 are pointing obliquely downwards. These spacers abut against the broad side 6 of the pinch, the upper spacers 25 cooperating with the bead 8 of the pinch seal so as to be locked by the bead.

According to FIG. 4, the barb 24 protrudes outward to the extent that it engages on an undercut 35 of a central opening 36 of the base for the piston 10. In this way, a permanent fixation and centering without putty is created. The opening 36 in the base stone is roughly adapted to the cross section of the pinch 5 and therefore substantially rectangular.

According to Figures 3 and 5, the base plate 20 also has two side parts 37 which are bent approximately at right angles to the plane of the base plate 21. To facilitate the angulation, a respective window 44 is cut out at an angle. They are each by means of two spring tongues 40, 41 on the narrow side 7 of the pinch. A lower spring tongue 40 is directed obliquely downward, an upper spring tongue 41 is spoon-like provided with a trough 42. The trough 42 facilitates the insertion of the integral lamp from above.

The position of the spacers 25, 26 on the base plate 21 is preferably selected so that the projecting edge, ie bead 8, the narrow side 7 of the I-shaped pinch just between the spacers 25, 26 and the spring tongues 40, 41 of the side part fixed becomes.

The assembly is made so that first the two mounting clips 20 are joined opposite each other in the opening 36 of the base stone or lamp support. In this case, the resilient barb 24 engages the undercut 35 in the opening 36.

Subsequently, the recessed lamp is added in the base block 50 until the four spring tabs of the spacers 25, 26 engage the beads 8 of the broad sides 7 of the pinch and thus the integral lamp can not be pulled out axially. The built-in lamp is connected to a total of 16 spring parts of the two mounting clips in the sock 50 xed. This suspension compensates for all tolerances of the base and the pinch.

Subsequently, the screw 51 of the base is fastened by means of several crimping on the base stone 50, as known per se. In this case, the outer feeders are connected to the socket contacts, as known per se.

The spring plate for the mounting clips 20 is usually stainless steel or a similar suitable material,

Essential features of the invention in the form of a numbered list are:

1. Electric lamp with a piston and a base and a longitudinal axis, wherein the piston is equipped with a pinch with two narrow sides and two broad sides, protrudes from the at least one external power supply, which in turn is electrically connected to a towering from the base supply line, the base having a pedestal with a pinch-receiving opening in which the piston is supported by a cementless connector in the form of at least one mounting clip, characterized in that the mounting clip has a base plate arranged parallel to the broad side of the pinch, wherein at the piston side oriented upper edge and the base side oriented lower edge of the base plate in each case at least one resilient spacer, which is directed towards the broad side, is arranged.

2. Lamp according to claim 1, characterized in that at the top and bottom of each two Abstandshai- ter, wherein the pinch is designed I-shaped with protruding edge on the narrow side, so that the spacers rest against the protruding edge.

3. Lamp according to claim 1, characterized in that the base plate has a central window, wherein from the frame of the window, a spring part as barbs to the outside, away from the broad side of the pinch, projects.

A. Lamp according to claim 3, characterized in that the barb cooperates with an undercut, which is provided in the opening of the base brick.

5. Lamp according to claim 1, characterized in that the upper spacer cooperating with a bead which is mounted on the broad side transversely to the axis.

6. Lamp according to claim 1, characterized in that the mounting clip has at least one side wall, which is attached approximately at right angles to the base plate, so that it extends along the narrow side of the pinch.

7. Lamp according to claim 6, characterized in that the mounting clip has two mutually opposite side walls,

8. Lamp according to claim 7, characterized in that at the top and bottom of the side wall in each case a spring tongue projects in the direction of the narrow side. 9. Lamp according to claim 1, characterized in that the lamp is a halogen incandescent lamp, which is equipped with built-in lamp and outer bulb.

Claims

claims

2. Lamp according to claim 1, characterized in that two Äbstandshal- ter are arranged ter at the upper and lower edge, wherein the pinch is designed I-shaped with protruding edge on the narrow side, so that the spacers rest against the protruding edge.

4. Lamp according to claim 3, characterized in that the barb cooperates with an undercut, which is provided in the opening of the base brick.

7. Lamp according to claim 6, characterized in that the mounting clip has two opposing side walls.

8. Lamp according to claim I _1, characterized in that at the top and bottom of the side wall in each case a spring tongue projects in the direction of the narrow side.

9. Lamp according to claim 1, characterized in that the lamp is a halogen incandescent lamp, which is equipped with built-in lamp and outer bulb.