CN203553101U - Capillary ultra-high pressure mercury lamp - Google Patents
Capillary ultra-high pressure mercury lamp Download PDFInfo
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- CN203553101U CN203553101U CN201320602609.7U CN201320602609U CN203553101U CN 203553101 U CN203553101 U CN 203553101U CN 201320602609 U CN201320602609 U CN 201320602609U CN 203553101 U CN203553101 U CN 203553101U
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- glass component
- luminous tube
- expansion
- pressure mercury
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Abstract
The utility model provides a capillary ultra-high pressure mercury lamp. The capillary ultra-high pressure mercury lamp is characterized in that sealed connection between electrodes and luminous tubes can be realized with the help of glass members, and sealing parts formed by the electrodes and the glass members have cone shapes, diameters of which are gradually narrowed from two ends of the luminous tubes to axial outer ends (outer side ends) of the luminous tubes; and the cone angle of each of the sealing parts with respect to the axis of the corresponding luminous tube is in a range from 10 to 40degrees. The utility model is advantageous in that the cone shapes of the sealing parts of the capillary ultra-high pressure mercury lamp are small, and the cracks on the sealing parts can be prevented, and therefore the inability of turning on the lamp caused by the above mentioned cracks can be reduced, and the long service lifetime can be realized.
Description
Technical field
The utility model relates to the sealing of capillary ultrahigh pressure mercury lamp (capillary ultra-high-pressure mercury vapor lamps).
Background technology
In the past, as the ultraviolet light polymerization of the exposure-processed use of printed circuit board (PCB) (PCB) etc., resin etc., process the ultra-violet lamp of use, be widely used capillary ultrahigh pressure mercury lamp (moment going out property of some lamp).
In Fig. 5, represent the cross section skeleton diagram of capillary ultrahigh pressure mercury lamp in the past.And Fig. 6 is the enlarged drawing of the B portion (sealing periphery) in Fig. 5.
A pair of shaft-like electrode 3 is practised physiognomy and is configured in over the ground the inside of luminous tube 1 cylindraceous, and the two ends of luminous tube 1 are sealed airtightly by glass component 5 and a pair of shaft-like electrode 3.
The internal pressure (discharge space 2) of this mercury lamp during lighting a lamp is very high, reaches 10
6more than Pa.
As mentioned above, due to capillary ultrahigh pressure mercury lamp have going out property of moment point with and the very high such feature of internal pressure, therefore require luminous tube, sealing to go out aspect the patience of the thermal shock that operation brings and resistance to pressure and there is excellent function at the point to because of lamp.
As shown in Figure 6, the sealing 4 of capillary ultrahigh pressure mercury lamp 10 is in the past that the outside dimension of Self-luminous tube 1 rises and the cone-shaped that sharply draws in, and its cone angle is generally more than 50 °.In the past, as long as being considered to avoid the direct sealing (using glass component by the poor restriction of the thermal coefficient of expansion of storeroom within the specific limits) of luminous tube 1 and electrode 3 just can relax point by lamp goes out and operates the thermal shock bringing, can prevent from cracking at sealing place, but not consider that the angle of this cone-shaped can have influence on the generation of crackle.If even owing to reducing the amount of glass component, just can reduce fee of material and can shorten the activity duration of sealing process and reach the effect of cutting down cost, therefore exist especially the length of sealing 4 extremely short, the very large lamp of cone angle.
Utility model content
The problem that utility model will solve
Yet, inventor of the present utility model has following discovery: except the difference of the thermal coefficient of expansion of glass component, electrode, luminous tube, for the steep lamp of the cone-shaped of sealing, mechanical strength and the resistance to pressure of its sealing are lower, thereby along with repeatedly carrying out the operation of going out of the point of lamp, thermal stress is likely to accumulate in sealing, and easily take herein as starting point cracks.Owing to producing such crackle, the air-tightness in guiding discharge space is destroyed, and the situation that can not light lamp takes place frequently, and causes the lifetime of lamp.
The utility model is made in order to overcome the shortcoming of above-mentioned prior art, and its problem is to provide the capillary ultrahigh pressure mercury lamp of the crackle that can be suppressed at the generation of sealing place.
For the scheme of dealing with problems
Capillary ultrahigh pressure mercury lamp of the present utility model is characterised in that, sealing between electrode and luminous tube is undertaken by glass component, the sealing being formed by above-mentioned electrode and above-mentioned glass component forms along with the two ends from above-mentioned luminous tube are gone and the cone-shaped of undergauge gradually to the axial outer end (outboard end) of above-mentioned luminous tube, above-mentioned sealing with respect to the cone angle of the axis of above-mentioned luminous tube in the scope of 10 °～40 °.
Capillary ultrahigh pressure mercury lamp of the present utility model is characterised in that, the value of the thermal coefficient of expansion of above-mentioned glass component is between the thermal coefficient of expansion of above-mentioned luminous tube and the thermal coefficient of expansion of above-mentioned electrode.
Capillary ultrahigh pressure mercury lamp of the present utility model is characterised in that, between above-mentioned luminous tube and above-mentioned glass component, also accompany the 2nd glass component, the value of the thermal coefficient of expansion of the 2nd glass component is between the thermal coefficient of expansion of above-mentioned glass component and the thermal coefficient of expansion of above-mentioned luminous tube.
Capillary ultrahigh pressure mercury lamp of the present utility model is characterised in that, between above-mentioned luminous tube and above-mentioned the 2nd glass component, also accompany the glass component of at least a kind, the value of the thermal coefficient of expansion of the glass component of described at least a kind, between above-mentioned the 2nd thermal coefficient of expansion of glass component and the thermal coefficient of expansion of above-mentioned luminous tube, is formed with by a plurality of above-mentioned glass components the hot incline structure (thermal gradient structure) that thermal coefficient of expansion gradually changes between above-mentioned luminous tube and above-mentioned electrode.
The effect of utility model
Adopt capillary ultrahigh pressure mercury lamp of the present utility model, can prevent from cracking at sealing place, its result can realize the long lifetime of mercury lamp.
Accompanying drawing explanation
Fig. 1 is the general profile chart of capillary ultrahigh pressure mercury lamp of the present utility model.
Fig. 2 is the enlarged drawing of A portion in Fig. 1 (sealing periphery).
Fig. 3 is the cone angle of sealing and the chart of the ratio cracking at sealing.
Fig. 4 is the enlarged drawing of sealing periphery of the capillary ultrahigh pressure mercury lamp of other execution modes of the present utility model.
Fig. 5 is the general profile chart of the capillary ultrahigh pressure mercury lamp of prior art.
Fig. 6 is the enlarged drawing of the B portion (sealing periphery) in Fig. 5.
Description of reference numerals
10, capillary ultrahigh pressure mercury lamp; 1, luminous tube; 2, discharge space; 3, electrode; 4, sealing; 5, glass component; 6, the 2nd glass component; α, cone angle.
Embodiment
Below, with reference to accompanying drawing, capillary ultrahigh pressure mercury lamp of the present utility model is described.
(embodiment 1)
Fig. 1 is the general profile chart of capillary ultrahigh pressure mercury lamp of the present utility model.Fig. 2 is the enlarged drawing of A portion in Fig. 1 (sealing periphery).
Capillary ultrahigh pressure mercury lamp 10 of the present utility model has the luminous tube cylindraceous 1 of transparent quartz glass system, and a pair of shaft-like electrode 3 is separated with predetermined distance ground mutually in the face of being configured in luminous tube 1.
The two ends of luminous tube 1 are sealed airtightly by glass component 5 and electrode 3 and form sealing 4.The value of the thermal coefficient of expansion of above-mentioned glass component 5 is between the thermal coefficient of expansion of luminous tube 1 and the thermal coefficient of expansion of electrode 3, and above-mentioned glass component 5 plays being accompanied by that the point of lamp goes out and causes at luminous tube 1 and electrode 3 effect that the thermal shock in the Thermal Cycling of thermal expansion, thermal contraction absorbs.
Electrode 3 further projects to the outside of sealing 4, at this outstanding position, is connected with outer lead (not shown).When above-mentioned wire being powered from external power source (not shown), between the pair of electrodes 3 in discharge space 2, there is arc discharge, the bright line (ultraviolet light) that radiation is produced by mercury.
The cone-shaped of the sealing 4 shown in Fig. 1, Fig. 2 forms by sealing operation as described below.First, at the position to be sealed of electrode 3 with the melting of specific length coiling the glass component 5 of ormal weight.Ormal weight herein and specific length are stipulated by the diameter of luminous tube 1 and the cone angle of desirable sealing 4.Next, the electrode 3 that is wound with above-mentioned glass component 5 is inserted in luminous tube 1, by glass component 5 being fused to the end face of the luminous tube 1 rotating around axis, thereby make sealing form cone-shaped.
Fig. 3 represents is the cone angle of sealing 4 and until causes lighting because sealing 4 cracks the relation that the point of lamp goes out between number of times.Cone angle refers to the angle that the cone-shaped of sealing 4 is with respect to the parallel for example horizontal axis of the axis with luminous tube 1.
The external diameter of the luminous tube 1 of the capillary ultrahigh pressure mercury lamp that experiment adopts is that 6mm, internal diameter are 2mm, and the external diameter of electrode 3 is 0.8mm, and input power is set as 5kW.
In the situation that cone angle is 10 °～40 °, until be 15000 left and right because sealing 4 cracks the point that causes the lighting lamp number of times that goes out, on the other hand, when cone angle surpasses 50 °, the some number of times that goes out sharply reduces, only has left and right 10000 times.
In the situation that cone angle is less than 10 °, the axial length of sealing 4 becomes very long and causes the maximization of mercury lamp, existing problems aspect practicality.
On the other hand, when cone angle surpasses 50 °, sealing is steep cone-shaped, therefore mechanical strength and the resistance to pressure of sealing are lower, at the point that repeats lamp, go out when operation, thermal stress is likely to accumulate in sealing, and easily produces the crackle of take herein as starting point.Therefore, the air-tightness of discharge space is destroyed and origination point does not play the situation of lamp.
(embodiment 2)
Fig. 4 is the enlarged drawing of sealing of the capillary ultrahigh pressure mercury lamp 10 of other execution modes of the utility model.
It is characterized in that, the sealing for the two ends of luminous tube 1 also accompanies the 2nd glass component 6 except glass component 5.Particularly, in the value of thermal coefficient of expansion that accompanies the 2nd glass component 6, the 2 glass components 6 between above-mentioned luminous tube 1 and above-mentioned glass component 5 between the thermal coefficient of expansion of above-mentioned glass component 5 and the thermal coefficient of expansion of above-mentioned luminous tube 1.Remaining structure is identical with above-described embodiment 1.
The sealing operation of this execution mode is through following such operation.In advance warmed-up the 2nd glass component 6 is fused to the end face at the both ends of luminous tube 1.After this operation of operation during with above-described embodiment 1 is identical.
Adopt present embodiment, the thermal coefficient of expansion of luminous tube 1, the 2nd glass component 6, glass component 5, electrode 3 increases successively gradually, therefore for the point of following lamp, go out and the absorbability of the thermal shock that produces at embodiment more than 1.
Moreover, between above-mentioned luminous tube and above-mentioned the 2nd glass component, also can accompany the glass component of at least a kind, the value of the thermal coefficient of expansion of the glass component of described at least a kind is between above-mentioned the 2nd thermal coefficient of expansion of glass component and the thermal coefficient of expansion of above-mentioned luminous tube, by form by a plurality of above-mentioned glass components the hot incline structure that thermal coefficient of expansion gradually changes between above-mentioned luminous tube and above-mentioned electrode, can further improve the effect that the crackle of sealing prevents.
Utilizability in industry
Adopt the utility model, can provide and can prevent the capillary ultrahigh pressure mercury lamp that cracks at sealing, the life-span is long.
Claims (4)
1. a capillary ultrahigh pressure mercury lamp, the sealing between electrode and luminous tube is undertaken by glass component, it is characterized in that,
The sealing being formed by above-mentioned electrode and above-mentioned glass component forms along with the two ends from above-mentioned luminous tube are gone and the cone-shaped of undergauge gradually to the axial outer end of above-mentioned luminous tube, above-mentioned sealing with respect to the cone angle of the axis of above-mentioned luminous tube in the scope of 10 °～40 °.
2. capillary ultrahigh pressure mercury lamp according to claim 1, is characterized in that,
The value of the thermal coefficient of expansion of above-mentioned glass component is between the thermal coefficient of expansion of above-mentioned luminous tube and the thermal coefficient of expansion of above-mentioned electrode.
3. capillary ultrahigh pressure mercury lamp according to claim 1 and 2, is characterized in that,
Between above-mentioned luminous tube and above-mentioned glass component, also accompany the 2nd glass component, the value of the thermal coefficient of expansion of the 2nd glass component is between the thermal coefficient of expansion of above-mentioned glass component and the thermal coefficient of expansion of above-mentioned luminous tube.
4. capillary ultrahigh pressure mercury lamp according to claim 3, is characterized in that,
Between above-mentioned luminous tube and above-mentioned the 2nd glass component, also accompany the glass component of at least a kind, the value of the thermal coefficient of expansion of the glass component of described at least a kind, between above-mentioned the 2nd thermal coefficient of expansion of glass component and the thermal coefficient of expansion of above-mentioned luminous tube, is formed with by a plurality of above-mentioned glass components the hot incline structure that thermal coefficient of expansion gradually changes between above-mentioned luminous tube and above-mentioned electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602609.7U CN203553101U (en) | 2013-09-25 | 2013-09-25 | Capillary ultra-high pressure mercury lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602609.7U CN203553101U (en) | 2013-09-25 | 2013-09-25 | Capillary ultra-high pressure mercury lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553101U true CN203553101U (en) | 2014-04-16 |
Family
ID=50471181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320602609.7U Expired - Fee Related CN203553101U (en) | 2013-09-25 | 2013-09-25 | Capillary ultra-high pressure mercury lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553101U (en) |
-
2013
- 2013-09-25 CN CN201320602609.7U patent/CN203553101U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 |