CN2643477Y - Explosion-proof single end halogen lamp bulb - Google Patents

Abstract

The utility model discloses an explosion-proof high-voltage single-ended halogen bulb, comprising a bulb shell, a filament that is positioned in the bulb shell, a bead stent that supports the filament, a lead wire on the bead stent, a molybdenum foil that is sealed in the glass and a lamp tripod that is connected with one end of the molybdenum foil. The filament at the two ends of the bulb shell is respectively connected with two lead wires on the bead stent. One of the lead wires is divided into an upper lead wire and a lower lead wire, which are connected with a thin conductor, the diameter of which is smaller than that of the upper and lower lead wire. The thin conductor is positioned inside the bulb shell, thereby effectively preventing the bulb explosion caused by instantaneous large current.

Description

Explosion-proof high-pressure single end halogen bulb

Technical field

The utility model relates to a kind of based on halogen bulb, belongs to a kind of explosion-proof high-pressure single end halogen bulb.

Background technology

High pressure single end halogen bulb generally by cell-shell A, be loaded on the bead support C of filament B in the cell-shell A, filament supports, on the bead support C lead-in wire F, be encapsulated in the molybdenum foil D in the glass, the lamp base E that molybdenum foil D one end connects and form.The filament B at two ends is connected with the two lead-in wire F upper ends of bead support C respectively in cell-shell A, two go between the F lower ends respectively be encapsulated in glass in the molybdenum foil D other end be connected, as shown in Figure 1.The based on halogen bulb of this structure, if vacuum degree does not reach requirement in manufacture process, perhaps each parts degasification is not thorough, this bulb in use, under high temperature and high effect of electric field, thin unpurified gas in this bulb or the parts can produce arc discharge between bulb two lead-in wires, the electric current that it will be directed at the molybdenum foil of flowing through infinitely increases, and molybdenum foil can to allow by electric current be the 10-20 ampere, under the effect of instantaneous large-current, the molybdenum foil overload, produce high heat and burn, the fusing point of molybdenum is 2620 ℃, and the glass of encapsulation molybdenum foil can burst under 2620 ℃ high temperature, causes the bulb blast.

Summary of the invention

The purpose of this utility model provides a kind of explosion-proof high-pressure single end halogen bulb of exploding because of instantaneous large-current of preventing.

The purpose of this utility model is to realize like this, it comprises cell-shell, is loaded on bead support, the lead-in wire on the bead support of the interior filament of cell-shell, filament supports, is encapsulated in the molybdenum foil in the glass, the lamp base that molybdenum foil one end connects, wherein lead-in wire of two lead-in wires of the bead support that the filament at two ends connects respectively in the cell-shell is to be divided into lead-in wire and following lead-in wire, last lead-in wire is connected by the thin wire littler than upper and lower diameter wire with following lead-in wire, and thin wire places in the cell-shell.

The utility model is owing to be connected a diameter than they little thin wires at last lead-in wire with going between down, and thin wire will be blown during as if the generation instantaneous large-current, thereby stops the bulb blast that takes place because of instantaneous large-current.

Description of drawings

Fig. 1 is the structural representation of common high pressure single end halogen bulb

Fig. 2 is the structural representation of the utility model embodiment

Embodiment

With reference to Fig. 2, it is at cell-shell 1 built-in light silk 2, bead support 9 filament supports 2 in the cell-shell 1, leaded on the bead support 9, two molybdenum foils 4,6 are encapsulated in the glass, molybdenum foil 4,6 one ends and lamp base 5,11 connect, filament 2 at cell-shell 1 two ends is connected with two lead-in wire upper ends of bead support 9 respectively, wherein a lead-in wire is to be divided into lead-in wire 10 and to go between 7 down, last lead-in wire 10 is on bead support 9, the upper end of last lead-in wire 10 (just placing the outer top of bead support) is connected with filament 2, go between down 7 lower end is connected with molybdenum foil 6 other ends, the lower end of last lead-in wire 10 (just placing the outer bottom of bead support) and lead-in wire 7 upper ends down are by than last, under go between 10, the thin wire 8 that 7 diameters are little connects, and the diameter of described thin wire 8 is 0.08-0.2mm, and thin wire 8 is to be positioned at cell-shell 1; Wherein another 3 lower ends that go between are connected with the other end that is encapsulated in another molybdenum foil 4 in the glass.

Claims (2)

1, a kind of explosion-proof high-pressure single end halogen bulb, it comprises cell-shell, is loaded on bead support, the lead-in wire on the bead support of the interior filament of cell-shell, filament supports, is encapsulated in the molybdenum foil in the glass, the lamp base that molybdenum foil one end connects, it is characterized in that: wherein lead-in wire of two lead-in wires of the bead support (9) that the filament (2) at the interior two ends of cell-shell (1) connects respectively is to be divided into lead-in wire (10) and go between down (7), last lead-in wire (10) is with lead-in wire (7) is by being connected than upper and lower lead-in wire (10, the 7) thin wire (8) that diameter is little down, and described thin wire (8) places in the cell-shell (1).

2, explosion-proof high-pressure single end halogen bulb according to claim 1, it is characterized in that: the diameter of described thin wire (8) is 0.08-0.2mm.