CN207489806U - The once-through type projecting apparatus mercury lamp of resistance to bombardment - Google Patents
The once-through type projecting apparatus mercury lamp of resistance to bombardment Download PDFInfo
- Publication number
- CN207489806U CN207489806U CN201721749485.XU CN201721749485U CN207489806U CN 207489806 U CN207489806 U CN 207489806U CN 201721749485 U CN201721749485 U CN 201721749485U CN 207489806 U CN207489806 U CN 207489806U
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- Prior art keywords
- cathode
- bombardment
- anode
- once
- projecting apparatus
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Abstract
The utility model is related to a kind of once-through type projecting apparatus mercury lamps of resistance to bombardment, including light bulb and it is located in light bulb as the electric arc tube of discharge space, electric arc tube both ends are connected separately with porcelain cap, porcelain cap is fixed with bulb side, electric arc tube cavity both ends are arranged with cathode and anode, the silica gel line powered on is correspondingly connected with by porcelain cap and the cathode and anode, the cathode end is fixed with thorium oxide plug, thorium oxide rod head has the bombardment portion that outer protrusion cathode end is in sharp cone distal, the cathode and bombardment portion peripheral surface offer heat dissipation groove, distance is 75~90mm between cathode end and anode end portions.The utility model is by being provided with the thorium oxide plug in sharp cone distal bombardment portion in cathode end, the triggering performance of electrode can be improved in discharge process, it can bear the bombardment of ultrahigh voltage electron for a long time again, it is reduced cathode abrasion, the setting of heat dissipation groove can quickly disperse the high temperature that bombardment generates, it reduces heat to transmit to cathode, extends cathode service life.
Description
Technical field
The utility model is related to field, the once-through type projecting apparatus mercury lamp of especially a kind of resistance to bombardment.
Background technology
High-pressure sodium lamp used in projecting apparatus, by the generation high pressure after being powered between two electrodes in the electric arc tube filled with mercury
Mercury vapor discharge, so as to which center forms the arc center of high brightness and externally shines between two electrodes.In this process
In, ultrahigh voltage electron constant bombardment can be born in cathode end, for a long time using the electric mill for easily causing cathode end larger
Damage, influences discharge effect.It is closer to the distance between existing cathode and anode simultaneously, height is easily generated after bombardment near cathode end
The cathode spot of brightness, these cathode spots can not be utilized effectively due to being not in reflector focal point, thus cause to light
Utilization rate it is undesirable.
Invention content
The technical problems to be solved in the utility model is：In order to overcome deficiency in the prior art, the utility model provides
A kind of once-through type projecting apparatus mercury lamp that can be born permanent ultrahigh voltage electron bombardment, improve light utilization efficiency.
Technical solution is used by the utility model solves its technical problem：A kind of once-through type projecting apparatus mercury of resistance to bombardment
Lamp including light bulb and is located in light bulb as the electric arc tube of discharge space, and the electric arc tube both ends are connected separately with porcelain cap, institute
It states porcelain cap to fix with bulb side, electric arc tube cavity both ends are arranged with cathode and anode, and the silica gel line powered on passes through porcelain cap
It is correspondingly connected with the cathode and anode, the cathode end is fixed with thorium oxide plug, the thorium oxide rod head
It is in the bombardment portion of sharp cone distal with outer protrusion cathode end, the cathode and bombardment portion peripheral surface offer heat dissipation groove, cloudy
Distance is 75~90mm extremely between portion and anode end portions.
Further, to improve heat dissipation effect, the heat dissipation groove is opened in the week in cathode and bombardment portion in the shape of a spiral
To surface.
Preferably, distance is 82mm between the cathode end and anode end portions.
The beneficial effects of the utility model are：The utility model in cathode end by being provided with sharp cone distal bombardment portion
Thorium oxide plug can improve the triggering performance of electrode in discharge process and bear the bombardment of ultrahigh voltage electron for a long time,
Cathode abrasion is reduced, extends cathode service life.Spacing increasing can also effectively prevent excessive cathode between cathode and anode
The appearance of spot improves light utilization efficiency.And the setting for the groove that radiates can quickly disperse the high temperature that bombardment generates, and reduce heat to cathode
It transmits.
Description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the utility model.
In figure：1. 6. silica gel line of light bulb 2. electric arc tube, 3. porcelain cap, 4. cathode, 5. anode, 7. thorium oxide plug 8. bangs
Hit the heat dissipation of portion 9. groove
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows the composition related with the utility model.
A kind of once-through type projecting apparatus mercury lamp of resistance to bombardment as shown in Figure 1 is put including light bulb 1 with interior be used as of light bulb 1 is located at
The electric arc tube 2 in electric space, 2 both ends of electric arc tube are connected separately with porcelain cap 3, and the porcelain cap 3 is fixed with 1 both ends of light bulb, electricity
2 inner cavity both ends of arc pipe are arranged with cathode 4 and anode 5, and distance is 82mm between 5 end of 4 end of cathode and anode.Power on
Silica gel line 6 is correspondingly connected with by porcelain cap 3 and the cathode 4 and anode 5, and 4 end of cathode is fixed with thorium oxide plug 7,
7 head of thorium oxide plug has the bombardment portion 8 that 4 end of outer protrusion cathode is in sharp cone distal.The cathode 4 and bombardment portion 8
Peripheral surface offers heat dissipation groove 9, and the heat dissipation groove 9 is opened in cathode 4 and the circumferential table in bombardment portion 8 in the shape of a spiral
Face.
The utility model by 4 end set of cathode carry sharp cone distal bombardment portion 8 thorium oxide plug 7, discharging
The triggering performance of electrode can be improved in journey and bears the bombardment of ultrahigh voltage electron for a long time, cathode 4 is reduced and wears,
Extend 4 service life of cathode.Spacing increasing can also effectively prevent the appearance of excessive cathode spot between cathode 4 and anode 5, improve light
Utilization rate.And the setting for the groove 9 that radiates can quickly disperse the high temperature that bombardment generates, and reduce heat and transmitted to cathode 4.
By thorium content be 5% thorium oxide plug with powder pressure injection, the mode being then sintered, which is embedded in, is fixed on cathode substrate
Front end, and cause sharp cone distal trigger unit outside protrude cathode substrate, touched in electrode trigger process with this trigger unit
Hair.Since the trigger unit is in sharp cone distal, and the half of the length of thorium oxide plug, thorium content are again cloudy compared with used in xenon lamp tradition
The content raising of pole 2% is more, therefore can greatly improve the triggering performance of xenon lamp electrode, extends the service life of electrode.
Using the above-mentioned desirable embodiment according to the utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to novel technical scope on specification, it is necessary to which its technology is determined according to right
Property range.
Claims (3)
1. a kind of once-through type projecting apparatus mercury lamp of resistance to bombardment including light bulb (1) and is located at the electricity in light bulb (1) as discharge space
Arc pipe (2), the electric arc tube (2) both ends are connected separately with porcelain cap (3), and the porcelain cap (3) is fixed with light bulb (1) both ends, electricity
Arc pipe (2) inner cavity both ends are arranged with cathode (4) and anode (5), and the silica gel line (6) powered on passes through porcelain cap (3) and described the moon
Pole (4) and anode (5) are correspondingly connected with, it is characterized in that：Described cathode (4) end is fixed with thorium oxide plug (7), the oxygen
Change the bombardment portion (8) that there is outer protrusion cathode (4) end to be in sharp cone distal on thorium plug (7) head, the cathode (4) and bombardment portion
(8) peripheral surface offers heat dissipation groove (9), and distance is 75~90mm between cathode (4) end and anode (5) end.
2. the once-through type projecting apparatus mercury lamp of resistance to bombardment as described in claim 1, it is characterized in that：The heat dissipation groove (9) is in
Helical form is opened in the peripheral surface of cathode (4) and bombardment portion (8).
3. the once-through type projecting apparatus mercury lamp of resistance to bombardment as described in claim 1, it is characterized in that：Cathode (4) end with
Distance is 82mm between anode (5) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749485.XU CN207489806U (en) | 2017-12-14 | 2017-12-14 | The once-through type projecting apparatus mercury lamp of resistance to bombardment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749485.XU CN207489806U (en) | 2017-12-14 | 2017-12-14 | The once-through type projecting apparatus mercury lamp of resistance to bombardment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207489806U true CN207489806U (en) | 2018-06-12 |
Family
ID=62458147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721749485.XU Expired - Fee Related CN207489806U (en) | 2017-12-14 | 2017-12-14 | The once-through type projecting apparatus mercury lamp of resistance to bombardment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207489806U (en) |
-
2017
- 2017-12-14 CN CN201721749485.XU patent/CN207489806U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20181214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |