JPH04121945A - Electric light with a reflection unit - Google Patents

Abstract

PURPOSE: To have a bulb simplified in its structure, facilitated in its manufacture and improved in its reliability by, during mounting, allowing a tongue piece to pass though an opening in a laterally crossing wall and also to be pointed at the narrow end part of the opening, and allowing a holding member to be inserted in an opening for the purpose of fixing a seal to the holding member after being turned by 90 deg.. CONSTITUTION: After an electric bulb 1 having a holding member 20 on a seal 3 is placed in reflective base 10, the bulb 1 is turned approximately by 90 deg. around its axis 4. A lamp container 2 slips in the member 20 deeper, resultantly the electric bulb seal 3 projects into an opening 16 inside a laterally crossing wall 13 so that the electric bulb 1 and the member 20 are made impossibly to turn any more. The seal 3 projects beyond the tongue piece 23 of the member 20 and through the opening 16 so that any contact between the member 20 and an electric current supply conductor 6 needs not to be apprehended at all. The tongue piece 23 of the seal 3 presses both the seal 3 and the surface 15 of the laterally crossing wall 13 so as to obtain a strong joint.

Description

[Detailed description of the invention]

[0001]

[Industrial application field]

The present invention relates to an electric lamp having a reflective unit,
This electric lamp includes a light-transmitting light container having a substantially rectangular axis and a seal in a cross-section crossing the axis, an electrical element inside the light-transmitting light container, and a structure that extends from the electrical element through the seal portion to the outside. a current supply conductor extending to the current supply conductor; a concave reflector and a neck profile, the neck profile having a transverse wall having a first surface and a second surface; a reflective substrate extending through an opening in the transverse wall; and a metal retaining member cementlessly connected to the seal of the translucent lamp envelope and retained within a neck-shaped portion of the reflective substrate. Equipped with. [0002]

[Background of the invention]

Such a unit is known from US Pat. No. 4,829,210. [0003] In the known unit, the retaining member is dish-shaped and has a standing end that is divided into tongues. These tongues are held by spring pressure within the neck-shaped portion of the reflective base. [0004] A disadvantage of this known unit is that the retaining member may be positioned deep or relatively deep within the neck-shaped portion, so that the position that the light source will occupy within the interior of the reflective substrate is uncertain. Become. [0005] Another disadvantage is that the reflective surface of the reflective substrate is susceptible to damage along the surface when the holding member is placed in position. [0006] Yet another disadvantage is that the reflective substrate has separate openings in the transverse wall for each conductor of the current supply conductor, through which these conductors must pass. [0007] The known unit is sealed with a glass disc and the neck-shaped portion holds the base. [0008] US Pat. No. 4,219,870 discloses a unit in which a current supply conductor emerges from a neck-shaped portion of a reflective substrate in the form of a contact pin. The seal of the lamp container is held and fixed, for example, with cement in a metal box, which is inserted into the neck-shaped part up to the stop and fixed using a separate fastening mold part applied from the outside. be done. [0009] A similar unit is disclosed in U.S. Pat. No. 4,376.967, which also includes a metal box secured around the seal using cement, the box having the lamp and reflective substrate attached to each other. After being joined, it constitutes a hinge spring that fixes it so that it can rotate by turning. [0010] US Pat. No. 4,403,276 discloses a similar unit, which is also fixed in the vicinity of the lamp vessel with cement in a metal box, and after assembly of the bulb and reflective substrate, said metal A box spring is spring-loaded outwardly to secure the bulb within the reflective substrate. In this unit,
A light bulb, similar to the two previously described light bulb units, is replaceably mounted within the reflective substrate. [0011] This replaceability, however, requires that the reflective substrate be open, ie not sealed with a glass disk. This would be dangerous from a safety point of view. fact,
For electric lamps operated on mains voltage there is a risk of explosion at the end of the rated bulb life. The glass disk will break into pieces. Additionally, open units may present a fire hazard when used at short distances from flammable materials. [0012]

[Summary of the invention]

SUMMARY OF THE INVENTION The object of the invention is to provide a reflection unit of the type mentioned at the outset, which has a particularly simple, easy-to-manufacture and reliable construction. [0013] According to the present invention, the above object is achieved by: the opening in the transverse wall comprising a rectangular cylindrical portion with substantially orthogonal narrow and wide edges, and the retaining member sealing the seal with a tight fit;
a tag fixed on a first surface of the transverse wall and projecting outwardly; a tag extending through an aperture in the forward bent transverse wall and along a wide edge of the aperture on the second surface of the transverse wall; With the tongue holding the outwardly extending terminal end, the opening in said transverse wall is secured to its narrow edge during assembly of the unit, as well as allowing the tongue of the forward bent tubular portion to pass through said opening. This is achieved by the size of the object being directed. [0014] The retaining member cooperates with the transverse wall so that the retaining member reaches a predetermined location inside the reflective substrate. This results in a precisely defined position of the bulb within the reflective substrate. [0015] The retaining member may have its tongue directed toward a narrow edge of an aperture in the transverse wall, and the tongue may be secured around the transverse wall along a wide edge of the aperture. . [00L6] In a preferred embodiment there are means for securing said retaining member. [0017] These means are achieved, for example, in a relief on the second surface of the transverse wall, which prevents rotation of the retaining member due to the presence of projections on each side of the tongue. [00'18] In a highly preferred embodiment, the bulb itself ensures the fixation of said retaining member. In this embodiment, the lamp envelope seal projects into the opening in the transverse wall. This embodiment first mounts the retaining member on a forward bending reflective substrate, then inserts the bulb into the retainer and the seal extends into the opening. Alternatively, it is also possible to insert the bulb in a certain way into the holding member, mount this holding member in the reflective substrate and then slide the bulb further until the seal protrudes into the opening. [0019] Other variations of this embodiment are possible, such as in which the tongue is pressed against the seal of the lamp container. The tongues may have a position such that they are oriented towards each other before the bulb is installed in its final position. When sliding the bulb into its final position, the seal presses the tongues apart. These tongues are then pressed against the second surface of the transverse wall, so that a very strong bond is obtained. [00201] In another form of this embodiment, the seal extends beyond the tongue of the retaining member and through the opening. This embodiment improves the electrical safety of the bulb, so that the seal forms electrical insulation around the current supply conductors, thereby ensuring that none of these conductors come into contact with the retaining member. Make it. [0021] A suitable connection between the retaining member and the bulb is preferred when the tubular portion has a tag that is retained substantially axially. [0022] The non-removable connection between the retaining member and the bulb has tongues facing away from the electrical element, extending in the axial direction, and retaining on the projections on the seal. can get. [0023] At an axial distance from the outwardly extending tag, the retaining member may include a frame extending into a neck-shaped portion capable of supporting the bulb in the event of shock or vibration. [0024] The electrical elements of the unit may be in a halogen-containing gas, for example an incandescent substrate such as tungsten. The incandescent substrate may be arranged in an M-shape. A relatively long incandescent substrate therefore has a triangular spatial arrangement, which is favorable for obtaining a high intensity light beam. Alternatively, the electrical element may be a pair of electrodes within the ionized medium. [0025] The reflective substrate may be sealed using a glass disk,
The glass disk may or may not be flat, may be provided with a lens, and may also be provided with a lamp base. It may be desirable to arrange the transverse wall between the ends of the neck-shaped portion. If embodiments of the unit according to the invention are provided with some kind of reflective substrate, units with shorter lengths can be obtained in this way. [C]026]

【Example】

Embodiments of the electric lamp according to the present invention will be described with reference to the drawings. [0027] FIG. 1 shows an electric lamp having a partially cut-off reflective unit in a side view, FIG. 2 shows the reflective base in a cross section along the line CC in FIG. 1, and (A) in FIG. FIG. 3B shows an axial cross-section of the assembly process of the reflective base of FIG. 1 including the light bulb and the holding member, and FIG. 3B shows the next assembly process of FIG. 3A. [0028] In FIG. 1, the electric lamp having a reflective unit is made of, for example, hard glass or at least 95% by weight silicon dioxide (
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A light bulb 1 comprises a translucent lamp envelope 2 made of SiO)-containing glass, an axis 4 and a seal 3 which is substantially rectangular in cross-section with the axis. The electrical element 5 is a tungsten incandescent substrate arranged in an M-shape within the lamp vessel 2 . A current supply conductor 6 extends from said electrical element 5 through the seal 3 to the outside. [0029] The reflective substrate 10 has a reflective portion 11 having a recess, which may be a polygonal surface, and a neck-shaped portion 12 is formed on the first surface 1.
4 and a second surface 15 . The current supply conductor extends through an opening 16 (see FIG. 2) in this transverse wall. [00301 The metal retaining member 20 is joined without cementing to the seal 3 of the lamp vessel 2 and fixed within the neck-shaped portion 12 of the reflective base 10. In the figure, the reflective substrate 10 is sealed with a lens or glass disk 7 and holds a base 8 with the neck-shaped portion 12 . [0031] The opening 16 (see fork 2) in the transverse wall 13 has a narrow edge 17
It is substantially rectangular with wide edges 18. [0032] The holding member 20 has a rectangular tubular portion 21 ((A) in FIG. 3).
), this tubular part seals the sealing part 3 using a tight fit. Said tubular portion 21 constitutes an outwardly extending tag 22 which is connected to said transverse wall 1.
3 and a tongue 23 projects through an opening 16 in said transverse wall 13 and has an outwardly extending terminal end 24 along the wide edge 18 of said opening 16. is retained on the second surface 15 of said transverse wall 13 comprising. The opening 16 in the transverse wall 13 is sized (see FIG. 3A) so that the tongue 23 in the tubular section 21 is directed into the narrow edge during assembly of the unit. It is large enough to be able to penetrate. [0033] After placing the light bulb 1 in FIG. 3A with the holding member 20 on the seal 3 in the reflective substrate, the light bulb with the holding member 20 is rotated around its axis 4 by about 90°. It can rotate over . The tongue piece 23 has a wide edge 1
8 (see FIG. 3B). [0034] The illustrated unit is the neck-shaped portion 1 of the reflective base.
2 constitutes means for fixing the holding member 20. As shown in this example, these means are formed by the seal 3 of the lamp vessel 2. Figure 3 from position (A) in Figure 3.
After being rotated into position (B), the lamp vessel 2 slides deeper into the retaining member 20 so that the bulb seal 3 protrudes into the opening 16 in the transverse wall 13. In this way, the bulb 1 and the holding member 20 can no longer be rotated. [0035] In FIG. 3(B), the seal 3 is attached to the holding member 2.
projecting beyond the tongue piece 23 of 0 and penetrating the opening 16;
As a result, the contact between the holding member and the current supply conductor 6 is reduced to the force that is possible in FIG. 3A to the force that is possible in FIG.
) then there is no longer any fear. [0036] The tongue piece 23 is oriented in another direction in FIG. 3(A). In FIG. 3B, the seal 3 presses the tongues apart. Said tongue 23 presses against both the seal 3 and thus the second surface 15 of said transverse wall 13, resulting in a very strong bond. [0037] In FIG. 3B, the tubular portion 21 has a ridge line 25 running in the axial direction, about which the tag 26 is bent inward to form a tight fit on the seal 3. In this way, the light bulb 1 is held. The light bulb is attached to the reflective substrate by means of an axially extending tongue 27 which is fixed in the holding member and faces away from the electrical element and moves over the protrusion 9 of the seal 3 during assembly. It is irremovably connected and cannot be moved. The light bulb can no longer be pulled away from the holding member, and the holding member can therefore no longer be rotated within the reflective substrate.
[038] A frame 28 at an axial distance from the forwardly extending tag 22 holds the bulb 1 in the radial direction. [0039] The transverse walls 13 are present at both end locks of the neck-shaped portion 12. [0040]

[Brief explanation of the drawing]

1 shows an electric lamp with a reflector unit partially cut away in side view; FIG.

FIG. 2 shows the reflective substrate in a cross section along line C-C in FIG. 1.

FIG. 31 (A) shows an axial cross section of the reflective substrate of FIG. 1 with a light bulb during an assembly process, and (B) shows an assembly process subsequent to (A). [Explanation of symbols] 1...Light bulb, 3...Seal, 5...Electric element 7...Glass disk, 9...Protrusion, 11...Reflecting portion, 13...Transverse wall , 15... Second surface, 17... Narrow edge, 20... Holding member, 22... Tag, 24... Terminating portion, 26... Tag, 28... Frame. DESCRIPTION OF SYMBOLS 2...Translucent electric lamp container, 4...Shaft, 6...Current supply conductor, 8...Base, 10...Reflective base, 12...Neck-shaped portion, 14...No. One surface, 16... Opening, 18... Wide edge, 21... Tubular portion, 23... Tongue piece, 25... Ridge line, 27... Tongue piece,

[Document color]

[Figure 2] drawing

[Figure 3] (A)

Claims (9)

[Claims] 1. A light-transmitting lamp casing having an axis and a seal having a substantially rectangular cross section perpendicular to the axis; an electric element within the light-transmitting lamp casing; and a seal extending from the electric element through the seal. and a current supply conductor extending outwardly;
a concave reflective portion and a neck feature, the neck feature having a transverse wall having a first surface and a second surface, the current supply conductor extending through an aperture in the transverse wall; An electric lamp comprising a reflective substrate and a metal retaining member cementlessly connected to the seal of the translucent lamp container and retained within a neck-shaped portion of the reflective substrate, wherein the opening in the transverse wall has a narrow edge. a substantially rectangular tubular portion having a wide edge and a retaining member sealing the seal with a tight fit, the tag securing and projecting outwardly on the first surface of the transverse wall; a tongue extending through the aperture in the transverse wall and retaining an outwardly extending terminal end along a wide edge of the aperture to the second surface of the transverse wall; An electric lamp with a reflector unit, characterized in that the tongue of the tubular part is sized to be able to pass through the opening and at the same time be directed to its narrow edge during assembly of the unit. 2. The electric lamp with a reflective unit according to claim 1, further comprising means for fixing a holding member within the neck-shaped portion of the reflective base. 3. An electric lamp with a reflector unit as claimed in claim 2, characterized in that the seal of the lamp projects into the opening of the transverse wall. 4. An electric lamp as claimed in claim 3, characterized in that the seal extends beyond the tongue of the holding member and projects through the opening. 5. An electric lamp having a reflection unit according to claim 3 or 4, wherein the tongue piece is pressed against a seal. 6. The tubular portion of the holding member is bent inward in the vicinity of a ridge line extending substantially in the axial direction;
4. An electric lamp according to claim 1, further comprising a tag held in a tight fit against the seal. 7. The tubular portion of the holding member has tongues spaced apart from and facing the electrical element, extending in the axial direction, and holding onto the protrusion on the seal. An electric lamp comprising the reflection unit according to claim 3 or claim 7. 8. At an axial distance from the outwardly extending tag,
8. An electric lamp with a reflector unit according to claim 1, 3, 6 or 7, characterized in that the holding member comprises a frame extending into the neck-shaped part. 9. The electric lamp according to claim 3, wherein the transverse wall is present between both ends of the neck-shaped portion.