CN2711893Y - High strength electric arc tube for discharge lamp - Google Patents

Abstract

The utility model discloses a high strength electric arc tube for discharge lamp The electric arc pipe of the utility model is similarly spherical, axiolitic or tubular and filled with substance which can be ionized. Both ends of electric arc pipe are provided with a first neck body and a second neck body which are sealed, contract in diameters and form a 180-degree angle. The electric arc pipe is provided with two pairs of electrodes which are externally connected with conductor wires. Therein one electrode pair is on the extension line of the lamp holder axial trace, and the other electrode pair deviates from the lamp holder axial trace. The electric arc pipe can be directly used as a discharging light source. The outside of the electric arc pipe, the first neck body and the second neck body can also be provided with an outer housing encompassing them. The utility model installs two sets of discharge electrode in the same electric arc pipe. While discharging electrode pair is replaced, the position of the electric arc (light source) can be replaced, so that the shape and illumination distribution of outgoing beams can be adjusted. The high-intensity discharge lamp for the illumination of car light can accomplish the shift function of automotive distance light and passing light well. The electricarc can take the place of 9004 tungsten halogen lamp with an appropriate lamp holder and a corresponding circuit and a relay.

Description

A kind of high-intensity discharge lamp electric arc tube

Technical field

The utility model relates to a kind of high-intensity discharge lamp electric arc tube, particularly a kind of automobile-used high-intensity discharge lamp electric arc tube that is provided with two pairs of electrodes.

Background technology

The common structure of the high-intensity discharge lamp of single-ended band lamp holder is: comprise an airproof made from high-purity quartz glass and be filled with spherical or axiolitic gas discharge electric arc tube of being of ionisable substance, electric arc tube comprises pair of electrodes, the electric arc tube two ends are provided with diameter contraction that is mutually 180 degree angles and the neck body part that seals, two neck bodies support an electrode respectively, and contact conductor is sealed in neck body central authorities and draws.In order to guarantee the electric arc tube working stability, electric arc tube and neck body also are provided with outward by can absorbing the case that ultraviolet quartz material is made, and case is airproof normally, and its two ends are by closing up and the electric arc tube neck body partly is tightly connected.Second contact conductor then is folded to lamp holder from the outside of case and the aperture that passes on the lamp holder is drawn.Electric arc tube is the core of discharge lamp, and its structure and performance have determined the feature and the purposes of this discharge lamp, when this use for discharge lamp when automobile headlamp throws light on, a kind of fixing illuminating bundle---distance light or passing beam can only be provided.Switch and must adopt two to overlap the independently illuminator cooperation that comprises discharge lamp, ballast and other accessory annex and carry out for carrying out distance light, dipped beam.System complex, cost height have certain dark time zone to exist, and will produce high trigger voltage so that lamp restarts during switching.

The utility model content

The utility model purpose is that a kind of electric arc that can produce two diverse locations in same discharge lamp electric arc tube will be provided, and the position of selectable switching arc is to be adapted to the high-intensity discharge lamp electric arc tube that car headlamp throws light on and has dipped beam, distance light function concurrently.

The purpose of this utility model is achieved through the following technical solutions: a kind of high-intensity discharge lamp electric arc tube, for spheroidal, ellipsoid shape or tubulose and be filled with ionisable substance, electric arc tube two ends are respectively equipped with diameter contraction that is mutually 180 degree angles and first neck body, second neck body that seals, be provided with two electrodes of first end and two electrodes of second end in the electric arc tube, two electrodes of first end and two electrodes of second end are electrically connected with the corresponding outer lead that passes lamp holder by the electric conductor in the corresponding end neck body respectively.Wherein pair of electrodes is on the line stretcher of lamp holder axis, and places perpendicular to the lamp holder axis, and another then departs from the lamp holder axis to electrode and also places by the direction perpendicular to the lamp holder axis.Described electric arc tube can be directly uses as charging source, also can be provided with the outer casing that surrounds it outside electric arc tube and first neck body, second neck body.

It has been generally acknowledged that in same container to produce two independently electric arcs that therefore, never the someone imagines two discharge lamps of diverse location manufacturing in same cell-shell.The utility model has realized that the appropriate position in same cell-shell is provided with two pairs of electrodes parallel to each other and vertical with the lamp axle, so just can also can switch mutually in two desired locations generation horizontal directions and one on the other two electric arcs vertical with the lamp axle.Be provided with two pairs of electrodes (the first end A electrode 3a, the second end A electrode 4a) and (the first end B electrode 3b, the second end B electrode 4b) in the electric arc tube of the present utility model, when pair of electrodes (3a, 4a) or (3b, 4b) then form an arcuation bright light source between this is to electrode when upward energized forms electric arc therein, when with power supply transfer to another to electrode between the time then electric arc transfer to immediately this to electrode between, rapidly realization almost is that the bright spot of zero transit time is switched.

High-intensity discharge lamp electric arc tube provided by the utility model is owing to collect dipped beam, distance light light source in a lamp, and can in same light fixture, switch and control, thereby improved dipped beam, distance light switch speed and beam quality, the generation of high pressure when having avoided switching, and reduced cost.This electric arc tube can provide the high-intensity discharge lamp that can be used for vehicle light illumination, is equipped with suitable lamp holder again and can realizes that accordingly circuit and relay that two electric arcs switch then can replace the application of 9004 tungsten halogen lamps and obtain better effect.

Description of drawings

Fig. 1 is the electric arc tube structural representation of the utility model embodiment;

Fig. 2 is the schematic side view of Fig. 1;

Fig. 3 is the structural representation of the electric arc tube assembling back band lamp holder of the utility model embodiment;

Fig. 4 is the A direction vertical view of Fig. 3;

Fig. 5 is a circuit diagram of realizing that two electric arcs exchange.

Specific embodiments

For further understanding feature of the present utility model, technological means and the specific purposes that reached, function, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment:

Each part description: electric arc tube 1, the first neck body 2a, the second neck body 2b, tubaeform taper seat 2c, the first end A electrode 3a, the first end B electrode 3b, the second end A electrode 4a, the second end B electrode 4b, the lead 5a of the first end A electrode, the lead 5b of the first end B electrode, the lead 6a of the second end A electrode, the lead 6b of the second end B electrode, outer casing 7, the contraction position 7a of outer casing lower end, retainer ring 8, support pin rod 9, lamp holder 10, the lead-in wire 11a of the second end A electrode, the lead-in wire 11b of the second end B electrode, the outer porcelain bushing 12a of lead-in wire 11a, the outer porcelain bushing 12b of lead-in wire 11b.

The utility model discloses an electric arc tube 1 that slightly is pancake spheroidal or ellipsoid shape and is filled with ionisable substance, electric arc tube 1 two ends are respectively equipped with diameter contraction that is mutually 180 degree angles and the first neck body 2a, the second neck body 2b that seals, and the electric arc tube 1 and the first neck body 2a, the second neck body 2b are provided with the outer casing 7 that surrounds it outward.First end in the electric arc tube 1 is provided with two electrodes (the first end A electrode 3a, the first end B electrode 3b), second end is provided with two electrodes (the second end A electrode 4a, the second end B electrode 4b), and set electrode is electrically connected with the corresponding outer lead that passes lamp holder 10 (the first end A electrode cable 5a, the first end B electrode cable 5b, the second end A electrode cable 6a, the second end B electrode cable 6b) by the electric conductor in the corresponding end neck body respectively.Two pairs of electrodes in the electric arc tube 1 are respectively the corresponding second end A electrode 4a of the first end A electrode 3a, the corresponding second end B electrode 4b of the first end B electrode 3b, its a pair of electrode (first end A electrode 3a, the second end A electrode 4a) be positioned on the line stretcher of lamp holder 10 axis and and orthogonal axe, another is to electrode (the first end B electrode 3b, the second end B electrode 4b) be positioned at the off-axis place also with orthogonal axe, the first end A electrode 3a in the electric arc tube 1, the first end B electrode 3b lead-out wire respectively with the lead 5a that passes lamp holder 10,5b is electrically connected, two electrode outlet line electrode A lead-in wire 11a of electric arc tube 1 second end, electrode B lead-in wire 11b then be folded to lamp holder 10 and respectively with the lead 6a that passes lamp holder 10,6b is electrically connected, A contact conductor 11a, the ceramic A sleeve pipe 12a that B contact conductor 11b is respectively equipped with outward, pottery B sleeve pipe 12b.Be provided with two pairs of electrodes (the first end A electrode 3a, the second end A electrode 4a) and (the first end B electrode 3b, the second end B electrode 4b) in this electric arc tube 1, when energized forms electric arc on the pair of electrodes therein, then between this is to electrode, form an arcuation bright light source, when with power supply transfer to another to electrode between the time then electric arc transfer to immediately this to electrode between, rapidly realization almost is that the light source of zero transit time switches.

Electric arc tube disclosed in the utility model is mixed outer casing, lamp holder and is then constituted automobile-used high-intensity discharge lamp.Concrete combination is described as follows:

The first neck body 2a sealing of position 7a and electric arc tube 1 is shunk by it in outer casing 7 bottoms, the second neck body 2b makes tubaeform taper seat 2c in the upper end, tubaeform taper seat 2c outer rim and outer casing 7 melt envelope and are connected, and perhaps outer casing 7 upper end reducings are melted to seal with the second neck body 2b and are connected.

Lamp holder 10 is with the hot-forming integral structure of high temperature resistant, high voltage withstanding insulating polymeric material, the first neck body 2a of electric arc tube 1 and the extension of its outer casing 7 embed lamp holder 10 end faces slightly in the column slotted eye at off-center position and guarantee that electrode pair (the first end A electrode 3a, the second end A electrode 4a) is on the lamp holder axis line stretcher and with the axis normal setting so that the dipped beam light source to be provided, the electrode pair of off-axis position (the first end B electrode 3b, the second end B electrode 4b) then provide the distance light light source.

The light source position of above-mentioned electric arc tube 1, shape and switch instances thereof are identical with traditional double filament tungsten halogen lamp 9004, the lamp holder that the utility model uses then improves slightly with reference to 9004 lamp holders, the lead-in wire of two pairs of electrodes is drawn from the preformed hole at lamp holder 10 middle parts, thereby make the utility model achievement that 9004 lamps can directly be replaced and keep identical beam shape that orientation and light distribute but colour temperature, luminous flux and life-span then improve significantly in 9004 tungsten halogen lamp light fixtures.

Claims (6)

1, a kind of high-intensity discharge lamp electric arc tube, be spheroidal, ellipsoid shape or tubulose also are filled with ionisable substance, described electric arc tube (1) two end is respectively equipped with diameter contraction that is mutually 180 degree angles and first neck body (2a) that seals, second neck body (2b), it is characterized in that: be provided with two couples of electrode (3a in the described electric arc tube (1), 4a) with (3b, 4b), these two couples of electrode external wire (5a, 5b, 6a, 6b), electrode pair (3a wherein, 4a) be on the line stretcher of lamp holder (10) axis and and orthogonal axe, electrode pair (3b, 4b) depart from lamp holder (10) axis also with orthogonal axe.

2, high-intensity discharge lamp electric arc tube according to claim 1, it is characterized in that: two pairs of electrodes that are provided with the corresponding second end A electrode (4a) of the first end A electrode (3a) and the corresponding second end B electrode (4b) of the first end B electrode (3b) in the described electric arc tube (1), the one electrode pair i.e. first end A electrode (3a), the second end A electrode (4a) is positioned on the line stretcher of lamp holder (10) axis, and another electrode pair i.e. first end B electrode (3b), the second end B electrode (4b) is positioned at the off-axis place.

3, high-intensity discharge lamp electric arc tube according to claim 2, it is characterized in that: the first end A electrode (3a), first end B electrode (3b) lead-out wire in the electric arc tube (1) are electrically connected with the lead that passes lamp holder (10) (5a), (5b) respectively, and two electrode outlet lines (11a) of electric arc tube (1) second end, (11b) then are folded to lamp holder (10) and are electrically connected with the lead that passes lamp holder (10) (6a), (6b) respectively.

4, high-intensity discharge lamp electric arc tube according to claim 1 is characterized in that: described electric arc tube (1) and first neck body (2a), the outer outer casing (7) that surrounds it that is provided with of second neck body (2b).

5, the high-intensity discharge lamp electric arc tube with two pairs of electrodes according to claim 4, it is characterized in that: described second neck body (2b) upper end is the tubaeform taper seat (2c) under the central fovea, and described tubaeform taper seat (2c) outer rim is sealed with outer casing (7) and is connected.

6, in the electric arc tube according to claim 4 with the high-intensity discharge lamp of two pairs of electrodes, it is characterized in that: described outer casing (7) is directly made the tubulose case.

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