JPH02155107A - Electric discharge lamp fixing structure - Google Patents

Abstract

PURPOSE:To exactly adjust the position of an electric discharge lamp, by approximately orthogonalizing the direction of rotation to each of the supports for supporting metallic supporting bodies and the direction of sliding to each of grooves for fixing lead wires against each other. CONSTITUTION:There is approximately orthogonalize the direction of rotation to each of supports 16, 17 for supporting metallic supporting bodies 19, 19' and the direction of sliding to each of grooves for fixing lead wires 7, against each other. Accordingly, lead wires 7 in an electric discharge lamp 2 are allowed to slide respectively to the lead-wire fixing grooves of the metallic supporting bodies 19, 19' with regard to three axes of x, Y and Z mutually orthogonalized, so that adjustments relative to the directions of two axes X, Y, for instance, can be made. Furthermore, an adjustment relative to the remaining Z axis can be made by rotating the metallic bodies 19, 19' respectively to the supports 16, 17 for supporting them. This procedure makes it possible to adjust the position of the electric discharge lamp to the supports 16, 17 for supporting the metallic supporting bodies in the three-dimensional directions thereof for permitting to make the exact positioning of the electric discharge lamp 2 to the supports 16, 17 for supporting the metallic supporting bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION The mounting structure of the discharge lamp of the present invention will be explained in detail according to the following items.

A. Industrial field of application B3 Overview of the invention C0 Background technology 0 Problems to be solved by the invention E0 Means for solving the problems F. Examples [Figures 1 to 6] F-1. Example [Figures 1 to 4] a, discharge lamp b0 cap part b-18 cap body b-2, terminal fitting b-3, support support b-4, metal support b-5, shade C0 discharge Lamp Mounting F-2, Second Embodiment [FIGS. 5 and 6] G1 Effects of the Invention (A, Field of Industrial Application) The present invention relates to a novel discharge lamp mounting structure. Specifically, the present invention aims to provide a new discharge lamp mounting structure that allows accurate position adjustment of the discharge lamp.

(B. Summary of the Invention) The mounting structure of the discharge lamp of the present invention is such that the lead wires protruding from the pinch seal portions at both ends of the discharge lamp are slidable in an approximately - plane with respect to the mounting groove of the metal support. The metal support is made rotatable relative to the support in a direction substantially perpendicular to the above-mentioned plane, and once the position of the discharge lamp has been adjusted, the lead wire and the metal support and the metal support and the support are welded, respectively. This allows the discharge lamp to be moved by a desired amount in three dimensions with respect to the supporting support, thereby making it possible to precisely adjust the position of the discharge lamp.

(C. Background Art) There is a strong demand for high luminous intensity in automobile headlamps, and recently attempts have been made to use discharge lamps as light sources.

(D. Problems to be Solved by the Invention) By the way, the light distribution pattern of automobile headlights is extremely important, and in order to obtain the desired light distribution pattern, it is necessary to The positional relationship and the positional relationship between these and the lens are extremely important. Therefore, for example, the positional relationship between the support supported by a reflector etc. and the discharge lamp must be able to be adjusted with precision. .

(E. Means for Solving the Problems) The mounting structure for the discharge lamp of the present invention is designed to enable accurate adjustment of the positional relationship between the discharge lamp and the supporting support that supports the discharge lamp. The lead wires protruding from the pinch seal portions at both ends can be slid in the mounting groove of the metal support in a plane approximately at -, and the metal support is moved relative to the support in a direction approximately perpendicular to the plane. The lamp is rotatable, and when the position of the discharge lamp is adjusted, the lead wire and the metal support are welded together, and the metal support and the support are welded to each other.

Therefore, in the mounting structure of the discharge lamp of the present invention, for example, by sliding the lead wire of the discharge lamp against the mounting groove of the metal support with respect to the three axes X%3'%Z that are orthogonal to each other, Since adjustments can be made in the directions of the two axes x and y, and adjustments can be made in the remaining Z axis by rotating the metal support relative to the support, the three A dimensional adjustment is possible, which makes it possible to carry out a precise positional adjustment of the discharge lamp with respect to the supporting support.

(F. Embodiment) [FIGS. 1 to 6] Details of the mounting structure of the discharge lamp of the present invention will be described below according to the illustrated embodiments.

(F-1, First Example) [Figures 1 to 4] Figures 1 to 4 show the first embodiment of the mounting structure of the discharge lamp of the present invention.
1 shows a discharge lamp device 1 to which the embodiment is applied.

(a, Discharge Lamp) 2 is a metal halide discharge lamp, in which both ends of a glass tube are pinch-sealed to form a central discharge space 3 and continuous pinch-sealed portions 4.4 at both ends thereof.

Reference numeral 5.5 is a metal foil individually sealed within the pinch seal portion 4.4, and reference numeral 6.6 is an electrode rod. 4 and the other end is connected to the metal foil 5.5. The one ends 6a, 6a of the electrode rod 6.6 protrude into the discharge space 3 and form discharge electrodes.

7.7 is a lead wire, the negative half of which is sealed within the pinch seal portion 4.4 and connected to the metal foil 5.5;
The other half portions protrude from the outer end surfaces of the pinch seal portions 4, 4 in opposite directions.

(b, Base Portion) Reference numeral 8 denotes a base portion on which the discharge lamp 2 is supported, and is comprised of a synthetic resin base body, two wooden supports, a shade, a metal support, and the like.

(b-1, Base Body) 9 is a base body made of synthetic resin. The base body 9 has a substantially horizontally tilted shape when viewed from the side, and is integrally formed with a lamp holding part 10 extending in the front-back direction and a connector part 11 extending downward from the rear end of the lamp holding part 10. It consists of being done.

The connector part 11 has a recess 12 that opens downward, and the recess 12 has an oval shape that is long in the left and right direction when viewed from below, and is divided into an upper half 12a and a lower half 12b. The lower half portion 12b is larger in both width and length than the upper portion 12a. Reference numeral 13 denotes a partition wall formed at the center of the upper half 12a of the recess 12 in the left-right direction.
is separated into two parts, left and right.

Note that 10a is a flange formed on the outer surface of a portion of the lamp holding portion 10 near the front end.

(b-2, Terminal Metal Fitting) Reference numeral 14.15 indicates a terminal metal fitting, which has a substantially upside down shape when viewed from the side.

The terminal fitting 14.15 has a horizontal portion 14a extending in the front-rear direction,
15a, vertical portions 14b and 15b extending in the vertical direction,
Intermediate portions 14c and 15c connecting the rear ends of the horizontal portions 14a and 15a and the upper ends of the vertical portions 14b and 15b are integrally formed of a conductive metal material.

The intermediate portions 14c and 15c extend in the left-right direction, and when viewed from the rear, the rear end of the horizontal portion 14a is connected to the right end of the intermediate portion 14c, and the rear edge of the upper end portion of the vertical portion 14b is connected to the left end of the intermediate portion 14c. The rear end of the horizontal portion 15a is connected to the left end of the intermediate portion 15c, and the rear edge of the upper end portion of the vertical portion 15b is connected to the right end.

The intermediate portion of the terminal fittings 14, 15 is embedded in the base body 9 by so-called insert molding. And the horizontal part 14a.

The front end of 15a protrudes from the front end surface of the lamp holding part 10 of the base body 9, and the substantially lower half of the vertical parts 14b and 15b is in the space separated by the partition wall 13 of the upper half 12a of the recess 12 of the connector part 11. Each is projected separately.

Then, horizontal parts 14a and 15a of each terminal fitting 14.15
are located side by side under the road, and the vertical parts 14b and 15
b is spaced from the left and right.

(b-3, Support Support) 16.17 is a support made of a conductive metal material, and horizontal parts 16a and 17a each extend in the front and back direction.
and vertical portions 16b, 17b extending in the vertical direction are integrally formed.

The length of the horizontal part 16a is approximately 174 to 8' longer than the length of the horizontal part 17a, the vertical part 16b extends downward from the rear end of the horizontal part 16a, and the vertical part 17b extends from the rear end of the horizontal part 17a. extends upward.

The vertical portion tab of the support support 16 is welded to the front end of the horizontal portion 14a of the terminal fitting 14, and the vertical portion 17b of the support support 17 is welded to the front end of the horizontal portion 15a of the terminal fitting 15.

This allows the horizontal part 16a of the support support 18.17 to
, 17a protrude forward from the front end of the lamp holding portion 10 of the base body 9, and are connected to the terminal fittings 14 and 15 separately.

18 is an insulating sleeve made of glass or ceramics, and the horizontal part 17a of the longer support 17
It is fitted around the rear half of the body.

(b-4, Metal Support) Reference numerals 19 and 19' denote metal supports, which are made of conductive metal plates, and both have substantially the same shape.

The metal support 19.19' has an oval-shaped side profile, and the base 20.20' is curled into a tubular shape. From the front half of the base 20.20' to the base 20.20'
A 0-shaped groove is formed in the supporting part 21, 21' extending in a direction perpendicular to the axial direction of the support part 21. A support piece 22.22' is formed, the support piece 22.22'
A mounting groove 23.23' is formed between the support portion 21.21' and the distal end of the support portion 21.21'.

The metal support 19, 19' as described above has its base 20
, 20' are the horizontal parts 16a, 1 of the support support 16.17
The base 20.7a is slidably fitted onto the front end of the metal support 19.7a, and in this state the elasticity of the material of the metal support 19.19' causes the base 20.
20' is pressed against the support support 16.17 and maintains its position unless a force is applied to rotate the metal support 19.19' relative to the support support 16.17.

One of the metal supports 19 has its support part 21 hanging down from the front end of the horizontal part 16a of the support support 16, and the other metal support 19' has its support part 21' suspended from the horizontal part of the support support 17. It is assumed to be in a standing position from the front end of 17a. In this state, the mounting groove 2 of the metal support 19.19'
3.23' is located approximately on a line extending along the axial direction of the lamp holding portion 10 of the base body 9.

Then, these metal supports 19.19' are rotated relative to the support support 16.17 to adjust their posture, and when the adjustment is completed, the base 20.20' is moved to the horizontal part 16a of the support support 16.17, It is fixed to the front end of 17a by spot welding. Incidentally, such fixing is performed when the discharge lamp 2 is attached, which will be described later.

(b-5, Shade) 24 is a shade, which is made of ceramics.

The base 25 of the shade 24 has a disk shape, and a vertically long oval-shaped insertion hole 26 is formed in the center.

Reference numeral 27 designates a short cylindrical portion integrally protruding from the edge of the insertion hole 26 toward the front, and a 0-shaped gutter-shaped light shielding portion 28 opens upward from the lower half of the cylindrical portion and is closed at the front end. It is integrally protruded towards the front. A shallow notch 28a is formed at the upper edge of the light shielding portion 28 on the right side when viewed from the rear.

Reference numeral 29 denotes a support hole formed near the lower end of the front wall 28b of the light shielding part 28.

The base portion 25 of the shade 24 is fixed to the front end surface of the lamp holding portion 10 of the base body 9. At this time, the front end of the horizontal portion 17a of the lower support 17 is connected to the light shielding portion 2.
The support hole 29 formed in the front wall 28b of 8 is fitted into the support hole 29,
Moreover, it is fixed by an inorganic adhesive 30.

31 is a synthetic resin filled in the recess 10b of the lamp holding portion 10 of the base body 9 and the space slightly rearward from the front end of the cylindrical portion 27 of the shade 24, and the discharge lamp 2 is fixed to the metal support 19. 19', a liquid synthetic resin was filled into the space and cured by heating. Thereby, the base body 9, the support supports 16, 17, and the shade 24 are firmly integrated.

Reference numeral 32 denotes an inorganic adhesive filled and solidified between the front end surface of the cylindrical portion 27 of the shade 24 and the front end surface of the filling synthetic resin 31.

(c. Attachment of the discharge lamp) The discharge lamp 2 is attached to the base portion 8 before the synthetic resin 31 and adhesive 32 are filled.

Lead wire 7.7 of discharge lamp 2 connects to metal support 19.19
' is inserted into the mounting groove 23.23', and this mounting groove 23
．． The position is adjusted by moving it back and forth and up and down within 23'. When the position adjustment is completed, the lead wire 7.7 is connected to the support portion 21.21' of the metal support 19.19'.
and are fixed to the support pieces 22, 22' by spot welding.

On the other hand, the metal support 19.19' is connected to the support support 16.1
7, thereby making adjustments in the left-right direction.

Once the position of the discharge lamp 2 has been adjusted as described above, the synthetic resin 31 and the inorganic adhesive 32 described above are filled.

Note that by filling the synthetic resin 31 and the inorganic adhesive 32, the base end portion of the insulating sleeve 18 described above is embedded therein. Further, the front end of the insulating sleeve 18 is located at a location corresponding to the center of the discharge space 3 of the discharge lamp 2.

Note that the insulating sleeve 18 may cover the support support 17 up to the front thereof.

Further, the light shielding part 28 of the shade 24 is positioned so as to cover approximately the lower half of the discharge space 3 of the discharge lamp 2.

(F-2, Second Embodiment) [Figures 5 and 6] Figures 5 and 6 show a discharge lamp device 33 according to a second embodiment of the mounting structure for a discharge lamp of the present invention. It is.

The discharge lamp device 33 is different from the discharge lamp device 1 in that it does not have a shade 24, and the other points are almost the same. Therefore, only the different points will be explained in detail, and the other parts will be explained in detail. The same reference numerals as those given to similar parts in the discharge lamp device 1 will be given, and the explanation will be omitted.

34 is a sleeve made of ceramics.

The base 35 of the sleeve 34 is disc-shaped, and a vertically long oval-shaped insertion hole 36 is formed in the center.

Reference numeral 37 denotes a short cylindrical portion integrally protruding from the edge of the insertion hole 36 toward the front.

The base portion 35 of the sleeve 34 is fixed to the front end surface of the lamp holding portion 10 of the base body 9. Then, synthetic resin 31 and inorganic adhesive 32 are filled.

(G. Effects of the Invention) As is clear from the above description, the mounting structure of the discharge lamp of the present invention includes two supports made of a conductive material and connected to two terminals separately, and metal supports made of two electrically conductive materials, each rotatably connected to the support and welded to the support after position adjustment, and having mounting grooves extending in a direction perpendicular to the axis of rotation; and pinch seal portions at both ends. and a discharge lamp in which two lead wires protruding from the metal support are individually slidably engaged with the mounting grooves of the metal support, and the lead wires are welded to the metal support after position adjustment. It is characterized in that the direction of rotation with respect to the support and the direction of sliding of the lead wire with respect to the mounting groove are substantially orthogonal directions.

Therefore, in the mounting structure of the discharge lamp of the present invention, by sliding the lead wire of the discharge lamp against the mounting groove of the metal support with respect to the three axes X, y, and z that are orthogonal to each other, for example, x , y2-axis direction, and the remaining Z-axis by rotating the metal support with respect to the support support, the three-dimensional adjustment to the support support of the discharge lamp can be made. An adjustment in the direction is possible, which makes it possible to carry out a precise positional adjustment of the discharge lamp with respect to the supporting support.

[Brief explanation of the drawing]

Figures 1 to 4 show the first mounting structure of the discharge lamp of the present invention.
This shows a discharge lamp device to which the embodiment of 1 is applied.
The figure is an exploded perspective view, FIG. 2 is a vertical sectional view, FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 2, and FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 5 and 6 show a discharge lamp device to which a second embodiment of the discharge lamp mounting structure of the present invention is applied, FIG. 5 being an exploded perspective view and FIG. 6 being a longitudinal sectional view. Explanation of symbols 2...Discharge lamp, 4...Pinch seal portion, 7...Lead wire, 14.15 16.17...Support support, 19.19'...Metal support body, 23. 23'...Mounting groove/terminal, 14.15/Terminal Figure 3

Claims (1)

[Claims] two support supports formed of a conductive material and connected to two terminals separately; each support support is rotatably connected to the two support supports and after position adjustment is welded to the support support and perpendicular to the axis of rotation; A metal support made of two conductive materials having mounting grooves extending in the direction of and a discharge lamp, the lead wire being welded to a metal support after adjustment, and characterized in that the direction of rotation of the metal support with respect to the support support and the direction of sliding of the lead wire with respect to the mounting groove are substantially orthogonal directions. Mounting structure of discharge lamp