CN205900507U - Molybdenum sheet and contain high -pressure mercury discharge lamp of said molybdenum sheet - Google Patents

Abstract

The utility model provides a molybdenum sheet, include head of being connected with the tungsten electrode and the afterbody of being connected with the external power source wire, the head includes in proper order that the trapezium structure of two connections is first trapezoidal with the second, the trapezoidal connection of second the afterbody, first trapezoidal with there is the width section poor between the second is trapezoidal, trapezium structure and to have the width section poor molybdenum sheet shape design subtracts narrowly and the width of electrode link molybdenum sheet, and the heat that the certain degree has restrained in the external heat source heating process runs off, more can ensure molybdenum sheet and near the seal strength of electrode connection part position quartz glass with the molybdenum sheet, the utility model also discloses an one kind contains the high -pressure mercury discharge lamp of molybdenum sheet.

Description

A kind of molybdenum sheet and the high-voltage mercury discharging lamp containing described molybdenum sheet

Technical field

This utility model is related to photoelectric field, particularly relates to a kind of molybdenum sheet.

Background technology

High-voltage mercury discharging lamp is that have two tungsten electrodes being arranged oppositely in an almost spherical quartz chamber body, respectively By the molybdenum sheet transition close to the quartz glass coefficient of expansion, realize the connection of two tungsten electrodes and external power source wire.Molybdenum sheet with Quartz glass is sealed by external heat source heat fusion, forms seal cavity.The rare gas being filled with seal cavity and hydrargyrum exist Between two tungsten electrodes, discharge excitation effect is lower luminous.

Above-mentioned molybdenum sheet bears the external force in electrode weight and the course of processing, is susceptible to deform, for improving the machinery of molybdenum sheet Intensity, improves productivity, on the premise of ensureing molybdenum sheet low-expansion coefficient (thickness < 0.03mm), generally selects width in 1.5mm Or more wide molybdenum sheet use.Wide molybdenum sheet and electrode joint portion, during external heat source heating is merged with quartz glass, wide Molybdenum sheet and electrode can conduct loss partial heat respectively, lead to the sealing of quartz glass and molybdenum sheet near molybdenum sheet and electrode joint portion , during high-voltage mercury discharging lamp lighting high pressure, easily molybdenum sheet bad with the rupture of electrode joint portion starting point in strength reduction.

Content of the invention

The utility model proposes a kind of molybdenum sheet, solve the problems, such as above-mentioned in mention.

The technical solution of the utility model is achieved in that a kind of molybdenum sheet, including the head being connected with tungsten electrode and with The afterbody that external power source wire connects, the trapezium structure first that described head includes two connections successively is trapezoidal and second trapezoidal, Described second trapezoidal connect described afterbody, described first trapezoidal and described second trapezoidal between have width segment difference.

Further, the described first trapezoidal width of going to the bottom is less than the width at the described second trapezoidal upper bottom.

Further, described segment difference part passes through arc transition.

Further, the described first trapezoidal contact-segment including contacting fixation with tungsten electrode and discontiguous noncontact section, institute State the height of contact-segment: aspect ratio≤0.7 trapezoidal with described first.

Further, described molybdenum sheet cross-section center part is arc-shaped.

Further, the arc radius r of described cross section with clamping tungsten electrode diameter phi a meet φ a >=r >=φ a/ 2, the long w of circular arc meets w≤1.5* φ a.

A kind of high-voltage mercury discharging lamp, containing described molybdenum sheet.

Described molybdenum sheet of the present utility model, compared to traditional structure, has the advantage that

Trapezium structure and the described molybdenum sheet shape design with width segment difference, the width having subtracted narrow with electrode connecting end molybdenum sheet Degree, to a certain degree inhibits the heat losses in external heat source heating process, more can ensure that described molybdenum sheet and electrode connecting portion position The sealing intensity of quartz glass and molybdenum sheet nearby.

The design of center circular arc, even if subtract under strip-members it is also possible to ensure sufficiently high machinery in described molybdenum sheet width Intensity.

Brief description

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before not paying creative labor Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of planar structure schematic diagram of an embodiment of high-voltage mercury discharging lamp of this utility model；

Fig. 2 is the cross-sectional structure schematic diagram of molybdenum sheet described in the utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

As shown in figure 1, a kind of high-voltage mercury discharging lamp, including quartz chamber body 1, tungsten electrode 2 and molybdenum sheet 3, molybdenum sheet 3 one end with Tungsten electrode 2 is connected, and the other end connects external power source.

Wherein, this molybdenum sheet 3 includes the head being connected with tungsten electrode and the afterbody 33 being connected with power circuit, and head wraps successively Include two connection trapezium structures first trapezoidal 31 and second trapezoidal 32, second trapezoidal 32 connection afterbodys 33, first trapezoidal 31 with There is width segment difference between second trapezoidal 32.

Further, first trapezoidal 31 width of going to the bottom is less than the width at second trapezoidal 32 upper bottom, thus forming segment difference.

Further, segment difference part passes through arc transition.

Further, first trapezoidal 31 includes contacting the contact-segment of fixation and discontiguous noncontact section with tungsten electrode 2, contact The height l1 that the height l2 of section is trapezoidal with first meets l2/l1≤0.7.

Further, as shown in Fig. 2 molybdenum sheet 3 cross-section center part is arc-shaped.

Further, the arc radius r of cross section and diameter phi a of the tungsten electrode 2 of clamping meet φ a >=r >=φ a/2, circle Arc length w meets w≤1.5* φ a.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in this utility model Protection domain within.

Claims (7)

1. a kind of molybdenum sheet it is characterised in that: include the head that is connected with tungsten electrode and the afterbody being connected with external power source wire, institute State head include successively two connections trapezium structure first trapezoidal and second trapezoidal, the described second described afterbody of trapezoidal connection, Described first trapezoidal and described second trapezoidal between have width segment difference.

2. as described in the appended claim 1 molybdenum sheet it is characterised in that: it is trapezoidal that the described first trapezoidal width of going to the bottom is less than described second Upper bottom width.

3. as described in the appended claim 1 molybdenum sheet it is characterised in that: described segment difference part pass through arc transition.

4. as described in the appended claim 1 molybdenum sheet it is characterised in that: the described first trapezoidal contact including contacting fixation with tungsten electrode Section and discontiguous noncontact section, the height of described contact-segment: aspect ratio≤0.7 trapezoidal with described first.

5. as described in the appended claim 1 molybdenum sheet it is characterised in that: described molybdenum sheet cross-section center part be arc-shaped.

6. as claimed in claim 5 molybdenum sheet it is characterised in that: the tungsten electrode of the arc radius r of described cross section and clamping Diameter phi a meets φ a >=r >=φ a/2, and the long w of circular arc meets w≤1.5* φ a.

7. a kind of high-voltage mercury discharging lamp it is characterised in that: containing described molybdenum sheet arbitrary in claim 1-6.