CN101359569B - Bulb-shaped fluorescent lamp and illuminating implement - Google Patents

Abstract

The invention is a luminaire related to a bulb shape fluorescent lamp and using the lamp. The bulb shape fluorescent lamp comprises a cover body, provided with a lamp socket on one side; a luminescent tube having a lamp tube that bends a glass tube to form a discharging path, a heat cathode being provided on inner side of the bending part formed on the end of the lamp tube that is supported on another side of the cover body; a lighting circuit accommodated in the cover body; the luminaire comprises an apparatus body; a socket provided on the apparatus body; and the bulb shape fluorescent lamp mounted on the socket; the bulb shape fluorescent lamp of the invention and the luminaire using the lamp can handle heat by the glass tube without block to the tube forming elements to stop supply power for the lamp even if the fluorescent lamp stops lighting due to out of service and temperature rises as discharging abnormally. And the bulb shape fluorescent lamp can replace common bulb for lighting.

Description

Lamp-bulb type fluorescent lamp and ligthing paraphernalia

Technical field

The present invention relates to a kind of ligthing paraphernalia that possesses the lamp-bulb type fluorescent lamp of luminous tube and use described fluorescent lamp, particularly relate to a kind of luminous tube is setting hot cathode (hot cathode) in the fluorescent tube (bulb) that the glass tube bending is formed lamp-bulb type fluorescent lamp and ligthing paraphernalia.

Background technology

Present lamp-bulb type fluorescent lamp is known: the general lighting that can be installed in incandescent lamp bulb etc. with the socket (ferrule) on the socket (socket) of bulb on, fixture (holder) is being set, on described fixture, be installed with in the fluorescent tube that glass tube is bent to form shapes such as U font, waveform or spirality and forms and setting the luminous tube (fluorescent lamp) of a pair of hot cathode and the lamp circuit device of described luminous tube, and utilize lampshade (globe) to cover described luminous tube part.

In recent years; lamp-bulb type fluorescent lamp with described formation is as having economy, extremely helping the illuminator lamp of environmental protection; just replace incandescent lamp bulb more gradually and used; described lamp-bulb type fluorescent lamp can provide following characteristic: light beam be with the general lighting situation equal with bulb under; the power consumption and the caloric value of described lamp-bulb type fluorescent lamp are about 1/4～1/5, and the life-span can be about 3～8 times.

In described lamp-bulb type fluorescent lamp, for example be bent to form into spiral luminous tube identical with common fluorescent lamp, be to form by glass tube, with lamp tube end near straight tube-like portion position in opposite directions on set a pair of hot cathode, and enclose inert gases (for example with reference to patent documentation 1) such as mercury and argon.

In addition, hot cathode is tungsten filament etc. is wound in coiled type and forms in described fluorescent lamp, and carrying the emitter (emitter) (electronic emitting material) that forms by alkaline-earth oxides class in the described coiled type portion, stable discharging constantly when starting or in the process of lighting a lamp like this.

And the described emitter (electronic emitting material) of coiled type portion can constantly consume along with useful life, can't cause discharge when complete exhaustion, and fluorescent tube can extinguish, just so-called end-of-life, the fluorescent tube that must more renew.

But, the exhaustion of described emitter (electronic emitting material) is because coating amount or lamp circuit condition etc., be not to carry out comparably between a pair of hot cathode, produce half-wave (half-wave) discharge sometimes in a fast electrode side of exhaustion, the cathode fall of common hot cathode is about 10V under the common for example situation at argon of the ionization voltage (ionization voltage) of inert gas, and till can rising to about several 10～100V under the cold cathode state of emitter (electronic emitting material) exhaustion.

The lamp circuit of lamp-bulb type fluorescent lamp has the characteristic near constant current usually, so when the light tube electric voltage of luminous tube increases, in fact lamp current does not reduce but electric power rising in fact, the electric weight that increased this moment can be concentrated to an exhausted electrode side of emitter (electronic emitting material), thereby cause arc discharge (arc discharge), and described discharge is proceeded, and causes near the temperature rising because of the heating of locality of electrode.

[patent documentation 1] Japan Patent spy opens the 2004-356060 communique

Current, in this lamp-bulb type fluorescent lamp, lead glass as the luminous tube fluorescent tube, crown glass, and the softening temperature of soda-lime glass soft glasses (soft glass) such as (soda lime glass) is more than or equal to 500 ℃, support the fixture of described luminous tube with respect to this, or the resin material that the use heat resisting temperature is lower than described glass tube in the lamp circuit part etc., at this moment, though few situation that the lamp tube service life end takes place to cause because the emitter (electronic emitting material) of described electrode is exhausted, but because paradoxical discharge is proceeded, and make near the electrode that temperature rises fusions such as resin material, or generation strange taste, perhaps make main fuse (fuse) action, thereby have influence on described fluorescent tube electric device in addition etc. because of overcurrent.

Method as the described situation of reply, also considered Thermal Cutoffs is being set near the luminous tube or abnormal current test section etc. is set on lamp circuit, the method that stops to switch on by blocking circuit, but there is the space that need set new parts or increases part number of packages etc. and hinder the more problem of miniaturization or economization of lamp-bulb type fluorescent lamp.

This shows that above-mentioned existing lamp-bulb type fluorescent lamp obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel lamp-bulb type fluorescent lamp and ligthing paraphernalia, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.

Because the defective that above-mentioned existing lamp-bulb type fluorescent lamp exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of novel lamp-bulb type fluorescent lamp and ligthing paraphernalia, can improve general existing lamp-bulb type fluorescent lamp, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.

Summary of the invention

The objective of the invention is to, overcome the defective that existing lamp-bulb type fluorescent lamp exists, and provide a kind of novel lamp-bulb type fluorescent lamp and ligthing paraphernalia, technical problem to be solved is the ligthing paraphernalia that makes it can replace the lamp-bulb type fluorescent lamp of tungsten filament lamp for general service and use described fluorescent tube, even fluorescent lifetime finishes, luminous stopping also because paradoxical discharge causes temperature to rise, also can utilize the glass tube fluorescent tube to deal with described heating, and under the situation that does not influence the fluorescent tube member of formation, stop power supply to fluorescent tube, be very suitable for practicality.

The object of the invention to solve the technical problems is to adopt following technical scheme to realize.For achieving the above object, according to lamp-bulb type fluorescent lamp of the present invention, it comprises: lid wherein is being provided with socket on the side; Luminous tube, has the fluorescent tube that the glass tube bending is formed spiral helicine discharge path, the inboard of the bend that forms on described lamp tube end is setting hot cathode, and lamp tube end is supported on the opposite side of lid, and the thickness of glass of the bend of the lamp tube end that the described hot cathode of its middle distance is nearest is less than other parts; Lamp circuit is accommodated in the lid; And the light transmission lampshade, cover described luminous tube, and be installed on lid or the socket.

The object of the invention to solve the technical problems can also be further achieved by the following technical measures.

Aforesaid (lamp-bulb type fluorescent lamp), the thickness of the part of wherein said hot cathode are less than other positions, and the butt tube inner wall.

Aforesaid (lamp-bulb type fluorescent lamp), the tube diameter at the position of the part of wherein said hot cathode and tube inner wall butt is greater than the tube diameter at other positions.

Aforesaid (lamp-bulb type fluorescent lamp), wherein said lampshade is to be shaped by synthetic resin, and luminous tube has following fluorescent tube, described fluorescent tube forms at least a portion and has the spirality of diameter greater than the screw diameter of the peristome of lampshade.

The object of the invention to solve the technical problems realizes in addition more by the following technical solutions.To achieve the above object of the invention, according to the ligthing paraphernalia that the present invention proposes, it comprises: apparatus body; Socket is arranged on the described apparatus body; And be installed on the described socket as claim 1, the described lamp-bulb type fluorescent lamp of claim 2.

The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:

The described lamp-bulb type fluorescent lamp of the 1st invention is characterised in that and comprises: lid wherein is being provided with socket on the side; Luminous tube has glass tube crookedly and form the fluorescent tube of discharge path, and the inboard of the bend that forms at described lamp tube end is setting hot cathode, and lamp tube end is supported on the opposite side of lid; And lamp circuit, be accommodated in the lid.

Sometimes emitter (electronic emitting material) exhaustion causes end-of-life, an electrode (hot cathode) side is because produce half-wave discharge etc. therein, make current concentration arrive described electrode (hot cathode), so can cause the abnormal arc discharge, cause causing that because of localized heating temperature rises near the electrode (hot cathode).Described temperature rising can involve makes the glass tube that stands facing each other mutually with electrode (hot cathode) be bent to form the bend of the fluorescent tube that forms into helical form etc. or near fixture and lamp circuit member.

But, according to the present invention, be bent to form and be helical form etc. by lamp tube end being carried out hot working, and the outer peripheral face side that makes bend forms thinlyyer than inner peripheral surface side, and set electrode (hot cathode) in the mode that stands facing each other mutually with described bend, therefore can thinning, and can make by the hot worked strain thin outer peripheral face side that mechanical strength is reduced such as residual and produce the crack because be heated, by air is entered in the luminous tube fluorescent tube, and the paradoxical discharge of the hot cathode portion of fluorescent tube is stopped.

The described lamp-bulb type fluorescent lamp of the 2nd invention is characterised in that and comprises: lid wherein is being provided with socket on the side; Luminous tube has glass tube crookedly and form the fluorescent tube of spiral helicine discharge path, and the inboard of the bend that forms on described lamp tube end sets hot cathode, and lamp tube end is supported on the opposite side of lid; Lamp circuit is accommodated in the lid; And the light transmission lampshade, cover described luminous tube, and be installed on lid or the socket.

The fluorescent tube of luminous tube has with described the 1st described identical construction of invention and has fluorescent lamp after finishing among the present invention, and in the mode of the fluorescent tube that covers described fluorescent lamp lampshade is set.

Utilize described lampshade can obtain desired luminous intensity distribution distribution character; and have following effect: the luminous tube that protection is bent to form avoids external impacts or dust adheres to; and compare with exposed glass tube, have ease for operation such as shape, material are easy to control.

The shape of lampshade be A shape, S shape, PS shape of the face shaping identical etc. with the fluorescent tube of the used bulb of general lighting be commonly called lachrymal shape or with the spherical fluorescent tube similar shape of G shape or the analogous shape of similar shape roughly.In addition, the continuous imaginary profile of the luminous tube that sets in the described lampshade (fluorescent tube), by along with described lampshade roughly the tear drop shape of similar shape or spherical lampshade inner face turn back and can obtain long discharge path, thereby can improve luminous efficiency.

Lampshade can use glass materials such as the synthetic resin material of light transmission Merlon etc. or sodium calcium, even the formed parts that will engage material or material each other is different also passable with synthetic resin and glass etc.In addition, can be according to desired characteristic and lampshade implemented methods such as water white transparency, dyeing or diffusion, also can be on the part of lampshade etc., form the reflecting member of reflectance coating etc. in order to improve light distribution characteristic.In addition, lampshade also can not cover the integral body of luminous tube, but a part forms opening.

The described lamp-bulb type fluorescent lamp of the 3rd invention is characterised in that, the thickness of glass of the bend of the lamp tube end nearest apart from hot cathode is littler than other parts.

Make that the outer peripheral face layback is long at the formed bend of lamp tube end that stands facing each other mutually with hot cathode because be bent to form, so compare with the inner peripheral surface side, described outer peripheral face side is longer and thinner, the mechanical strength of described thinner wall section reduces and also exists the residual strain that produces because of hot working, thermo-labile impact produces the crack from described part easily.

The described lamp-bulb type fluorescent lamp of the 4th invention comprises: luminous tube, have with side at one end and set the mode of pair of end portions and electrode on the fluorescent tube that is bent to form and the pair of end portions that is encapsulated in described fluorescent tube respectively, and the part of one of them electrode is thinner than other positions, and is configured in the end in the mode of butt tube inner wall; Lid, at one end side has socket, and at another distolateral installation luminous tube; Lampshade, at one end side has peristome, and be installed in another of lid in the mode that covers luminous tube distolateral; And ignition device, be accommodated in the lid.

The outer side surface of fluorescent tube bend (wall of the side that radius of curvature increases) is compared with interior sidewall surface (wall of the side that radius of curvature diminishes), and glass lamp must extend when fluorescent tube is bent to form, so described outer side surface is thinner than other positions.Therefore, preferably with described part as the little part of thickness, promptly as electrode butt position, carry out easily so during fabrication.And, it is desirable to the little part of described thickness, be formed on the wall away from lampshade one side of the lamp tube end that is encapsulating electrode, but be not limited to this, if be not subjected to the thermal impact of lampshade, the part that then described thickness is little also can be near lampshade.In addition, electrode butt position also can be arranged on the interior sidewall surface of the line part of lamp tube end or bend.

The described lamp-bulb type fluorescent lamp of the 5th invention is characterised in that, the tube diameter at the position of the part of electrode and tube inner wall butt is bigger than the tube diameter at other positions.

Tube diameter becomes big part and it is desirable to be formed on the lamp tube end that encapsulating electrode or the crooked outer side surface, and it is desirable to be formed on distant on the part of lampshade, but be not limited to this.In addition, the cross sectional shape of the part that described tube diameter change is big also can not be circular.

The described lamp-bulb type fluorescent lamp of the 6th invention is characterised in that in the 4th invention or the described lamp-bulb type fluorescent lamp of the 5th invention, the position that thickness is little is formed on the bend of fluorescent tube.

The described lamp-bulb type fluorescent lamp of the 7th invention is characterised in that, in the 4th invention or the described lamp-bulb type fluorescent lamp of the 5th invention, lampshade is shaped by synthetic resin, and luminous tube has at least a portion and has diameter greater than the screw diameter of lampshade peristome and form spiral fluorescent tube.

The described ligthing paraphernalia of the 8th invention is characterised in that and comprises: apparatus body; Socket is arranged on the described apparatus body; And be installed in the described lamp-bulb type fluorescent lamp of arbitrary invention in the 1st, 2 or 4 on the described socket invention.

Apparatus body can directly be mounted to ceiling, is suspended on the ceiling or is installed in wall first-class, lampshade, shade (shade), reflector etc. also can be installed as limit light body in body, and fluorescent lamp is exposed.

In addition, ligthing paraphernalia is not limited to 1 lamp-bulb type fluorescent lamp is installed on apparatus body, also can set a plurality of fluorescent lamps.

The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, lamp-bulb type fluorescent lamp of the present invention and ligthing paraphernalia have following advantage and beneficial effect at least:

According to the 1st invention, following lamp-bulb type fluorescent lamp can be provided: with by lamp tube end is crooked and bend that form on thin-walled sets hot cathode (electrode) accordingly, when hot cathode such as end-of-life (electrode) are overheated, make thinner wall section produce the crack, thereby stop power supply to this lamp, especially need not to change manufacturing step, and need not to be provided with in addition power supply blocking-up member, thereby the fail safe of fluorescent tube and economy are good.

According to the 2nd invention, can provide effect and the identical lamp-bulb type fluorescent lamp of described the 1st invention with lampshade.

According to the 3rd invention, following lamp-bulb type fluorescent lamp can be provided, that is,, realize and described the 1st invention and the identical effect of the 2nd invention by the bend that connects recently with hot cathode and mechanical strength reduces is applied thermal shock.

According to the described lamp-bulb type fluorescent lamp of the 5th invention, the diameter of the part fluorescent tube of the part by making the butt electrode is greater than the tube diameter at other positions, and in fact glass lamp extends and less thick, therefore work as end of lifetime, during the electrode abnormal heating, determine the generation in crack in advance, can stop discharge thus.

According to the described lamp-bulb type fluorescent lamp of the 6th invention, on the bend of fluorescent tube, form the little part of thickness, therefore can easily make, even and work as end of lifetime, when the temperature of electrode rises, also can produce the crack at short notice, thereby stop discharge exactly.

According to the described lamp-bulb type fluorescent lamp of the 7th invention, luminous tube has the screw diameter of diameter greater than the lampshade peristome that is formed by synthetic resin, therefore can extend discharge path length, thereby increases the light output of luminous tube and improve luminous efficiency.

According to the 4th invention, following ligthing paraphernalia can be provided, use the described lamp-bulb type fluorescent lamp of arbitrary invention in described the 1st to the 3rd invention, therefore described lamp-bulb type fluorescent lamp can easily load and unload on the socket of utensil, and can protect lamp-bulb type fluorescent lamp.

In sum, the invention relates to a kind of lamp-bulb type fluorescent lamp and the ligthing paraphernalia that uses described lamp, described lamp-bulb type fluorescent lamp comprises: lid wherein is being provided with described socket on the side; Luminous tube has glass tube crookedly and form the fluorescent tube of discharge path, and the inboard of the bend that forms on described lamp tube end setting hot cathode, and lamp tube end is supported on the opposite side of lid; And lamp circuit, be accommodated in the lid; Described ligthing paraphernalia comprises: apparatus body; Socket is arranged on the described apparatus body; And be installed in lamp-bulb type fluorescent lamp on the described socket; Lamp-bulb type fluorescent lamp of the present invention and the ligthing paraphernalia that uses described lamp, when making that because of paradoxical discharge temperature rises even fluorescent lifetime finishes to cause luminous stopping, also can deal with described heating by the glass tube fluorescent tube, fluorescent tube member of formation generation obstruction is not stopped power supply, and described lamp-bulb type fluorescent lamp can replace the general lighting bulb to this lamp.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is that the portions cut of the lamp-bulb type fluorescent lamp of the invention process form is faced cross-sectional view.

Fig. 2 is the cross-sectional view of amplifying the main portion of the luminous tube in the expression lamp-bulb type fluorescent lamp shown in Figure 1.

Fig. 3 is the front view of the lamp-bulb type fluorescent lamp of other examples of expression the present invention.

Fig. 4 is the schematic diagram of employed glass tube fluorescent tube in the lamp-bulb type fluorescent lamp shown in planar development Fig. 3.

Fig. 5 be expression the present invention other examples lamp-bulb type fluorescent lamp a part face cross-sectional view.

Fig. 6 is the amplifier section cross section enlarged drawing of electrode package end.

Fig. 7 is the amplifier section cross-sectional view of the electrode package end of other examples of the present invention.

Fig. 8 is the front view of the lighting device of the invention process form.

1: socket 2: lid

3: fixture 4: luminous tube (fluorescent lamp)

4s: outer peripheral face side 5: hot cathode (electrode)

5b: filament 5c: column sections

5d: lead

6: support 7: lamp circuit

8: lampshade 9: ligthing paraphernalia

11: eyelet 12: shell

31: fixed part 32: cylindric tube portion

33: circular outer circumferential surface section 34: circular groove

35: inserting hole 36: spacer member

37: interval board 38: tube portion

39: installation portion 40: fluorescent tube

42: bend 43: base end part

45: bonding agent 61: the conical pipe stem

61a: base end part 61b: sleeve part

62: lead 63: tubule

71: circuit board 72: twine pin

73: transformer 74: transistor

75: capacitor 76: rectifier cell

81: edge part 82: spherical portion

83: reducing diameter part 91: apparatus body

92: socket L1, L2: lamp-bulb type fluorescent lamp

Embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to lamp-bulb type fluorescent lamp and its embodiment of ligthing paraphernalia, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.

Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.For convenience of description, in following embodiment, components identical is represented with identical numbering.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.

See also Fig. 1, shown in Figure 2, Fig. 1 and Fig. 2 are the figure of the lamp-bulb type fluorescent lamp of this example of expression.Fig. 1 is that portions cut is faced cross-sectional view, and Fig. 2 is near the schematic diagram after cutting the end of the luminous tube in the enlarged drawing 1.

L1 is a lamp-bulb type fluorescent lamp among the figure, 1 is the screw-in socket that is called E shape among the figure, 2 is distolateral annular lids that are fixed on the described socket 1, the 3rd, be fixed on another distolateral fixture of described lid 2, the 4th, the luminous tube (fluorescent lamp) that the base end part side is supported by described fixture 3,7 are mounted on the fixture 3 and are accommodated in lamp circuit in the lid 2, the 8th, cover described luminous tube (fluorescent lamp) 4 and be installed in light transmission lampshade on the fixture 3, described lamp-bulb type fluorescent lamp comprises above each member etc.

The overall dimension of lamp-bulb type fluorescent lamp L1 recited above form with rated power by the C7501 of Japanese Industrial Standards (JIS, Japanese Industrial Standards) regulation for example be that general lightings such as the incandescent lamp bulb usefulness bulb of 40W type, 60W type, 100W type is roughly the same.

Described luminous tube 4 possesses following fluorescent tube 40, described fluorescent tube 40 is 1 straight tube-like glass tube to be halved and middle section is bent to form, and forming discharge path, described discharge path with the described middle section that is bent to form as top 41, and have two pars intermedia helical forms of glass tube are twined and the helical form bend 42 of formation, and on two base end parts 43 of fluorescent tube 40, sealing the support (mount) 6 that is provided with hot cathode 5 respectively.

Be the shaping of described spiral helicine fluorescent tube 40, be under the state of the glass tube of 1 straight tube-like of thermoplastic, be bent to form in binary mode at middle section, then the middle section that will be bent to form is as top 41, make the both ends of glass tube be wound in helical form, form spiral helicine bend 42 at pars intermedia thus along the spiral helicine groove of forming of mould.A pair of base end part 43 sides of glass tube towards with the direction of top 41 opposite sides, though length is short, the extension of almost parallel ground.

Described support 6 comprises couple of conductor 62,62 in described die post 61 of conical pipe stem (flare stem) 61, sealed package, and exhaust tubule 63 and the hot cathode 5 used etc., and the emitter (electronic emitting material) that described hot cathode 5 applies in twining the coil that tungsten filament that dual or triple shapes engage with described lead 62,62 forms or filling is formed by the mixture of barium (Ba), calcium (Ca), strontium alkaline-earth oxides class such as (Sr) also carries described emitter.

And described hot cathode 5 is arranged near the base end part that is bent to form with the glass tube of described fluorescent tube 40 on the position that 43 helical form portion 42 stands facing each other mutually.

In addition, this moment, described couple of conductor 62,62 both can be a linearity, in addition the shape of bend 42 that also can corresponding fluorescent tube 40 and being bent to form.

The fluorophor that is forming the luminous shape of 3 wavelength at the inner face of described fluorescent tube 40 is by overlay film 45 in addition, and enclosing argon (Ar), neon (Ne) or krypton inert gas and mercury such as (Kr) in fluorescent tube 40.The mercury alloy of the alloy of described mercury and bismuth, tin is configured as roughly spherical, and is encapsulated in the tubule 63 of described one of them die post 61, has the effect of suitably controlling the mercury vapor pressure in the fluorescent tube 40.In addition, except described mercury alloy, also can on described lead 62,62, set in advance and have the auxiliary amalgam that effect is distributed in mercury absorption.

Described lid 2 is for example by polybutylene terephthalate (PBT) (PBT, thermal endurance synthetic resin material and form circular such as polybutyleneterephthalate), and respectively by bonding agent, rivet or method such as chimeric, and with on the distolateral peristome that is fixed on the shell 12 of the screw-in socket 1 of E26 shape for example of one, another that will extend is distolateral in addition is fixed on the fixture 3.

Fixture 3 for example is by thermal conductivity good metal materials such as aluminium, aluminium alloys and form, and comprises: discoideus fixed part 31; Tube cylindraceous portion 32, outstanding from the periphery of described fixed part 31; Circular outer circumferential surface section 33, distolateral outstanding laterally from described tube portion 32; And circular groove 34, be formed between the other end side and tube portion 33 of described outer circumferential surface section 33.

The slotting a pair of inserting hole 35,35 that is connected with the both ends of fluorescent tube 40 is being set on discoideus fixed part 31, insert base end part 43 sides of leading to the fluorescent tube 41 in described inserting hole 35,35 and pass through bonding agents 45 such as silica resin, epoxy resin, be fixed on the fixed part 31 and engage.

In addition, the 36th, the spacer member of the plate-like that is configured in the fixture 3 and forms by material and fixture 3 identical materials, comprise from the periphery of interval board 37 to a distolateral outstanding tube cylindraceous portion 38, and from the extended laterally flange shape installation portion 39 of front end of described tube portion 38.Described installation portion 39 is clamped between lid 2 and the fixture 3, optionally also can pass through bonding agents (not shown) such as silica resin, epoxy resin and engage fixing.

On described interval board 36, forming extended tubule 63,63 and the slotting a pair of open-work 30,30 that is connected with lead 62,62, and the circuit board 71 of the lamp circuit 7 that constitutes fluorescent tube is being installed from the end of fluorescent tube 40.In the side of described circuit board 71 following lamp circuit 7 is being set, this lamp circuit 7 by many that will be connected with the lead 62,62 of deriving from luminous tube 4 twine pins (wrapping pin) 72 ..., transformer 73, transistor 74, capacitor 75, rectifier cell 76 or the electrical connection of resistive element parts such as (not shown) and constitute.

In addition, described lampshade 8 is by transparent or have the material such as glass, synthetic resin of light diffusing, to form level and smooth curved surface shape near general lightings such as incandescent lamp bulbs with the mode of the glass lamp profile of bulb.The edge part 81 of the peristome side of described lampshade 8 is fitted in the other end side and the circular groove 34 between the tube portion 32 of the outer circumferential surface section 33 that is formed on described fixture 3, and engages by bonding agents (not shown) such as silica resin or epoxy resin fixing, thereby formation lamp-bulb type fluorescent lamp L1.

Then, the assembling sequence to described lamp-bulb type fluorescent lamp L1 describes.In addition, the part of described assembling sequence can be changed front and back.At first, base end part 43 sides of luminous tube 4 are inserted lead in the inserting hole 35,35 of fixture 3, inject bonding agent 45 from the inboard of fixture 3, thereby base end part 43 side engagement are fixed on the fixture 3.

Be positioned at the tubule 63,63 of base end part 43 of inboard extended luminous tube 4 of fixture 3 and the open-work 30,30 of the interval board 37 that lead 62,62 passes spacer member 36, thereby spacer member 36 be inserted into the inboard of fixture 3.

Have the circuit board 71 of the lamp circuit part that forms by transformer 73 grades to be installed to the substrate installation portion of spacer member 36 with wiring is installed, and winding pin 72 set on the circuit board 71, on the lead 62 that is intertwined and connected and derives from the end of luminous tube 4.

Secondly, combined fixator 3 and lid 2, and by method such as chimeric, bonding agent in conjunction with fixing.

A not shown wherein lead 62 that is connected the input side of circuit board 71 is passed the eyelet (eyelet) 11 of socket 1, another lead 62 is configured in socket 1 side of lid 2, make socket 1 cover lid 2, described lead 62 is clamped between shell 12 leading sections of the leading section of lid 2 and socket 1, and by punching press methods such as (punching), and socket 1 card only is fixed near the leading section of the shell 12 that overlaps with the leading section of lid 2, make respectively two leads 62 ... welding or welding etc. on eyelet 11 and shell 12 and realize electrical connection.

Afterwards, make lampshade 8 cover luminous tubes 4, the edge part 81 of peristome side is fitted in the circular groove 34 of fixture 3, and utilizes bonding agent to engage, thereby finish lamp-bulb type fluorescent lamp L1.

And, in this way among the lamp-bulb type fluorescent lamp L1 that forms, for example the maximum outside diameter of lampshade 8 is about 65mm, the total length of fluorescent tube (comprising 1 one of socket) is about 133mm, the fluorescent tube electric power that comprises circuit loss is smaller or equal to 23W, and the fluorescent tube light beam is more than or equal to 15001m, and the general lighting that can replace being equivalent to 100W uses with bulb.

The lamp-bulb type fluorescent lamp L1 of above-mentioned formation be installed to E26 shape socket 1 corresponding socket on and light a lamp, the emitter (electronic emitting material) that is carried on the hot cathode 5 along with the carrying out of lighting a lamp consumes and is exhausted, then be difficult to continue normal discharge between the hot cathode 5,5, feasible discharge stops, fluorescent tube L1 no longer lights a lamp, end-of-life.

And, also circulating current and be in lamplerss state not among most of herein fluorescent tube L1, but electric current is concentrated to an exhausted fast wherein electrode (hot cathode) 5 sides of emitter (electronic emitting material) when producing half-wave discharge among the fluorescent tube L1 of end-of-life once in a while, therefore cause the abnormal arc discharge, cause electrode (hot cathode) 5 neighbouring because of the rising of localized heating temperature.Described temperature rising can involve the bend 42 of the fluorescent tube 40 that the glass tube helical form that stands facing each other mutually with electrode (hot cathode) 5 is entwined or near fixture 3 and lamp circuit member.

But, among the present invention be with by fluorescent tube 40 is carried out hot working make spirally-wound outer peripheral face side can with than inner peripheral surface side more the bend 42 that forms of unfertile land stand facing each other mutually and set electrode (hot cathode) 5, therefore can realize thinning and the outer peripheral face side of the thin-walled that can reduce because of mechanical strengths such as hot working residual strains because thermal shock produces the crack.

And, among the described fluorescent tube L1, the crack part of the bend outer peripheral face side of air after the thinning of described fluorescent tube 40 enters in the fluorescent tube 40, and paradoxical discharge is stopped, and make the coiled type portion broken string of hot cathode 5 and blocking-up to the power supply of fluorescent tube L1, near the hot cathode 5 temperature descends, thereby can prevent the fusion of fluorescent tube L1 member of formation, part or produce strange taste etc.

Therefore, be used for stopping blocking circuit or part when need not to be attached in addition the end-of-life of lamp-bulb type fluorescent lamp L1 to fluorescent tube L1 power supply, the simple structure change that can get final product by the position of change bend 42 of fluorescent tube 40 or hot cathode 5 realizes, and need not space that on fluorescent tube L1, sets by new part etc., thereby can realize the more miniaturization or the economization of lamp-bulb type fluorescent lamp.

In addition, on described glass tube fluorescent tube 40 during package support 6, hot cathode 5 is positioned on the approximate centre axle of fluorescent tube 40, make with described hot cathode 5 corresponding fluorescent tube 40 part thermoplastics and when being bent to form,, simultaneously carry out Yi Bian common being bent to form is the straight tube-like glass tube that stretches gently for the bend 42 of glass tube fluorescent tube 40, therefore elongate after the glass tube, the thickness of outer peripheral face side 4s is preceding thinner than processing, and in addition, the thickness of inner peripheral surface side 4u is than thick before processing.

That is, the outer peripheral face side 4s of crooked glass tube is elongated, and thickness is less than other parts, and can be near hot cathode 5, thereby can make standoff distance nearest, therefore, can easily produce the crack at described bend when paradoxical discharge.

In addition, (40～100W) corresponding specified lamp-bulb type fluorescent lamps are (under 8～23W) the situation using bulb with described general lighting, the glass tube that forms fluorescent tube 40 uses following glass tube usually: formed by the soft glass that is called as crown glass (softening beginning temperature is about 500 ℃), external diameter before the processing is about 7～10mm, thickness is about 0.7～1.1mm, about the thickness after being bent to form, outer peripheral face side 4s is about 0.5～0.9mm, and inner peripheral surface side 4u is about 0.8～1.5mm.

In addition, absolute value by the thickness of the bend 42 of the formed fluorescent tube 40 of the glass that is bent to form in this way, relevant with standoff distance of fluorescent tube electric power, glass tube material (softening temperature), caliber, hot cathode length, glass tube walls and hot cathode etc., and can not generally determine.

See also Fig. 3, shown in Figure 4, Fig. 3 and Fig. 4 represent other examples of lamp-bulb type fluorescent lamp of the present invention.Fig. 3 is the front view of the lamp-bulb type fluorescent lamp L2 of other examples of expression, Fig. 4 is the schematic diagram of employed glass tube fluorescent tube in the lamp-bulb type fluorescent lamp shown in planar development Fig. 3, among the figure, to Fig. 1 to Fig. 3 in identical part enclose same-sign, and omit its explanation.

Described luminous tube 4 is shown in the plane outspread drawing of Fig. 4, by connecting piece 45 ... connect make glass tube outer form roughly bowl-shape and be bent to form and stop up the end 4 fluorescent tubes 40 ..., thereby form a discharge path, net shape be with each fluorescent tube 40 ... Breadth Maximum near carry out roughly hemispherical bending as the center, and form the bud shape.

Promptly, in the fluorescent tube 40 after finishing, base end part 43 around the central shaft of luminous tube 4, ... side is from the top 41, ... side is turned back, pars intermedia is to a lateral bending song wherein and 4 fluorescent tubes 40 of bending forming, ..., lay respectively at base end part 43, ... around the side central shaft, and each pars intermedia is to protruding with the direction of orthogonality of center shaft, and closer to each other and top 41 adjacency, ... closely to connect or the mode of butt connects and constitutes the luminous tube 4 with a discharge path, and the device 3 of being fixed supports, and the lampshade 8 that will cover described luminous tube 4 (fluorescent tube 40) is bonded on the fixture 3.

And, among the described lamp-bulb type fluorescent lamp L2, in described fluorescent tube 40, form on the end of fluorescent tube 40 at top of discharge path, encapsulating the support that possesses hot cathode 5, and described hot cathode 5 be provided in the bend 42 corresponding positions with glass tube is crooked and thin-walled portion of forming on.

Described lamp-bulb type fluorescent lamp L2 also can realize the action effect identical with described example; promptly; even at end-of-life, hot cathode 5 because of the generation of abnormal glow discharge (Glow Discharge) when overheated; in the bend 42 that forms in fluorescent tube 40 thinnings that make luminous tube 4; make fluorescent tube 40 produce the crack, can stop power supply exactly to fluorescent tube L2.

See also Fig. 5, shown in Figure 6, Fig. 5 and Fig. 6 represent other examples of lamp-bulb type fluorescent lamp of the present invention.Fig. 5 is the positive cross-sectional view of lamp-bulb type fluorescent lamp, and Fig. 6 then is near the positive cross section of the part enlarged drawing the electrode.

It is that 7.5～8.5mm, thickness are the glass lamp 40 of 0.3～1.2mm that luminous tube 4 has 1 tube diameter, and is forming the electrode package end 33 as the pair of straight wire at the bend 42 of being responsible for (main tube) and two ends on described fluorescent tube.

Bend 42 is so that 1 fluorescent tube 40 binary mode and make the middle section bending of fluorescent tube 40, and with the middle section after the bending of described fluorescent tube 40 as top 41, and the both end sides that forms fluorescent tube 40 dual spiral-shaped with the helical form bending.The shaping of described bend 42 is in fluorescent tube 40 thermoplastics that make 1 straight tube-like and under the soft state, make fluorescent tube 40 with in the binary mode of middle section and bending, afterwards with the middle section after the bending as top 41, the groove that helical form by the corresponding mould of the both end sides that makes fluorescent tube 40 forms twines, and forms spirality thus.And, the shape of bend 42 is to form following roughly sphere: the maximum gauge portion of axle orthogonal direction is greater than one of lampshade 8 distolateral peristome size, and the shape of corresponding lampshade 8, and the diameter of axial pars intermedia is distolateral greater than one and the diameter of top side 41.In addition, in this example, the base end part 43 of a pair of fluorescent tube forms the pair of straight wire, the thickness of the fluorescent tube outer side surface from the line part of described linearity to the initial bend 42a of bend 42 (wall of the side that curvature increases when crooked) is less than the thickness as the line part at other positions, i.e. 0.15～0.6mm, more preferably 0.3mm～0.5mm, and tube diameter forms 9.5～10.5mm more greatly.In addition, further reduce the thickness of described bend 42a or increase under the situation of tube diameter in expectation, can heat once more bend 42a, by air blast methods such as (air blow), from lamp tube end the part tube diameter is increased, thereby reduce thickness, but be not limited to described method.

Each electrode 5 for example has the coiled coil part in central authorities, and to have with described coiled coil partly be filament (filament) 5b that the center is attached with the electronic emission material.In addition, pillar (leg) 5c of portion that extends from pair of pipes stem 61 two ends is to cut off than the more outstanding size of sleeve (skirt) 61b of portion.That is, it is desirable to, the length overall of filament 5b and column sections 5c for example forms about 11mm greater than the internal diameter of fluorescent tube 40.Length overall by making filament 5b and column sections 5c is greater than fluorescent tube 40 internal diameters, when the operation of carrying out from each electrode package end insertion tube stem 61 of fluorescent tube 40, can be easily and make column sections 5c be connected to thickness exactly less than outer peripheral face 4S as the thickness of the line part at other positions.

In this way and behind each electrode package end insertion tube stem 61 of fluorescent tube 40, the sleeve part 61b of heating tube stem 61 also encapsulates, be installed in thus on the die post 61 tubule 63 with fluorescent tube 40 in outstanding setting the under the state that is communicated with, described tubule 63 is also referred to as blast pipe.In the manufacture process of luminous tube 4, seal described a plurality of tubule 63 successively by fusing, do not discharge gas in the luminous tube 4 by there being sealed part in each tubule 63, and after having enclosed gas and displacement, the described tubule 63 of fusing sealing.

In addition, lampshade 8 is to utilize resin materials such as for example Merlon with light diffusing, acrylic acid, polyethylene, and forms the shape of the general lighting of incandescent lamp bulb etc. with the glass marble of bulb.That is, distolateral at another of lampshade 8 is that top side is forming spherical portion 82, and at one end side is forming diameter gradually less than the reducing diameter part 83 of spherical portion 82.At a distolateral peristome that forming of reducing diameter part 83, and described peristome fastens in the inboard of lid 2 and fixture 3, and utilizes silica resin etc. and fixed.

Lampshade 8 with the direction of the direction of principal axis quadrature of lampshade 8 on the maximum gauge portion of spherical portion 82 as cut-off rule, on the direction of principal axis of lampshade 8, forming top side lampshade and reducing diameter part 83 side lamp covers with being divided into two.Described a plurality of top side lampshade and reducing diameter part 83 side lamp covers cover from direction of principal axis in the mode of taking in the luminous tube 4 that the device 3 of being fixed supports, and are for example fixed by ultrasonic bonding etc.Utilize the structure of cutting apart of described lampshade 8, can be accommodated in the lampshade 8 having the luminous tube 4 of diameter greater than the spirality portion of the peristome of lampshade 8.

When the lamp-bulb type fluorescent lamp L1 of this example of assembling, at first from the electrode package end with corresponding to the mode of the column sections 5c of the direction of the little outer peripheral face 4S of thickness and filament electrode 5 and insertion tube stem 61, and add heat-seal, exhaust afterwards and enclose gas and form luminous tube 4.At this moment, in the operation of inserting electrode 5, so that the column sections 5c of electrode 5 cuts off greater than the fluorescent tube internal diameter, therefore can be accurately and easily make thickness less than outer peripheral face 4S and column sections 5c butt as the thickness of the line part at other positions.

Secondly, respectively support recess, and utilize bonding agent etc. and fix, and at fixture 3 inboard insertion circuit boards 71, make the lead 5d of luminous tube 4 respectively the twining on the pin 72 that be intertwined and connected at lamp circuit with what the end of luminous tube 4 was installed in fixture 3.

And, make the top side lampshade of lampshade 8 and reducing diameter part 83 side lamp covers cover combination from direction of principal axis, and for example wait and install by ultrasonic bonding in the mode of the luminous tube 4 taking in the device 3 that is fixed and support.The ignition device of being installed on the fixture 37 is accommodated in the lid 2, utilizes distribution to come the shell 12 and the eyelet 11 of connecting circuit plate 71 and socket 1 respectively, shell 12 is installed in the socket installation portion of lid 2, and utilize rivet etc. and fixed.

In this way shown in specifically being constructed as follows of the lamp-bulb type fluorescent lamp L1 that forms.Total length on the direction of principal axis of lamp-bulb type fluorescent lamp L1 is 109mm, the diameter of lampshade 8 maximum gauge portions is 60mm, the maximum gauge portion of luminous tube 4 is 54mm, and the size on the direction of principal axis of luminous tube 4 is 64mm, and outward appearance and general lighting are approximate with incandescent lamp bulb, can replace general lighting to use with bulb.

In this way and the assembling lamp-bulb type fluorescent lamp L1, near the heating that is encapsulating in the process of lighting a lamp the electrode package end of electrode 5 is the highest, and when the end-of-life of luminous tube 4, the emitter that is coated on the filament 5b of electrode 5 reduces, light tube electric voltage is risen, from the reasons such as die post 61 unusual emitting electrons that support this filament 5b, make near the caloric value in electrode package end more, produce abnormal heating.

But, in described lamp-bulb type fluorescent lamp L1, the column sections 5c of filament electrode 5 and thickness are less than the outer peripheral face 4S butt as the thickness of the line part at other positions, can make glass lamp 40 produce the crack thus at short notice exactly, therefore be difficult to 8 conduction of resin system lampshade hotly, and can prevent to produce abnormal conditions such as fusion.In addition, in this example, the part of 5 butts of electrode is that little outer peripheral face 4S of thickness and lampshade 8 are the distant sidewalls of being separated by, even therefore resinous lampshade 8 also can suppress to produce unusual situation because of described heat conduction to lampshade 8.Therefore and the outer peripheral face 4S butt that the column sections 5c of electrode 5 and thickness are little can Visual Confirmation butt state, thereby operation is good.

In addition, the typical temperature of the column sections 5c in the fluorescent lamp lighting process is 300～400 ℃, even contact less than the outer peripheral face 4S as the thickness of the line part at other positions with thickness, also can not produce abnormal conditions such as crack.But the temperature of the column sections 5c when lighting a lamp unusually can rise to till 1200～1300 ℃.At this moment, when thickness less than as the outer peripheral face 4S of the thickness of the line part at other positions during more than or equal to 0.6mm, producing the crack needs the time.On the other hand, when thickness undesirable during less than 0.15mm because the impact strength when carrying etc. is insufficient.

See also shown in Figure 7, Fig. 7 be the expression lamp-bulb type fluorescent lamp L1 of the present invention other examples, Fig. 7 is the amplifier section cross-sectional view of electrode package end, the formation except the lamp tube electrode potted end all with the 1st homomorphosis, therefore enclose same-sign, and omit its explanation.

A pair of filament electrode 5 has the triple coil part in central authorities, partly is that the center is attached with the electronic emission material with described triple coil.In addition, identical with first example, the column sections 5c that extends to two ends from pair of pipes stem 61 cuts off with the size of contact fluorescent tube 40.In addition, pair of pipes stem 61 tilts to same direction from the base end part 61a root that supports, and is 12 to spend in this example medium dip angle.

During the die post 61 that inserts in this way from the electrode package end of luminous tube 4 and form, by make thickness less than as the outer peripheral face 4S of the thickness of the line part at other positions and lead inclined side on same direction, and coming the operation of package tube stem 61 from the electrode package end, can make the filament 5b of electrode 5 and the little outer peripheral face 4S of thickness that column sections 5c is connected to tube inner wall easily and exactly.

Lamp-bulb type fluorescent lamp L1 with the luminous tube 4 that constitutes as mentioned above, even electrode 5 produces the abnormal temperature rising when end-of-life, but back, thickness contact less than the outer peripheral face 4S of other parts because filament 5b will stretch with crooked fluorescent tube 40, so can shift to an earlier date and produce the crack exactly, thereby stop discharge.

In addition, the common hot(test)-spot temperature (spottemperature) of the filament 5b part in the fluorescent lamp lighting process is 900～1000 ℃, even contact less than outer peripheral face 4S with thickness, also can not produce abnormal conditions such as crack as the thickness of the line part at other positions.But the temperature of the filament 5b when lighting a lamp unusually can rise to till 2000～2500 ℃ because of the temperature of filament 5b integral body.At this moment, when thickness surpassed 0.3mm less than the outer peripheral face 4S as the thickness of the line part at other positions, producing the crack needed the time.On the other hand, when thickness undesirable during less than 0.15mm because the impact strength when carrying etc. is insufficient.Therefore, thickness it is desirable to 0.15～0.3mm less than the thickness as the outer peripheral face 4S of the thickness of the line part at other positions.

See also shown in Figure 8ly, lamp-bulb type fluorescent lamp L1 can be used in the ligthing paraphernalia 9 as Down lamp (down light).Described ligthing paraphernalia 9 has apparatus body 91, and socket 92 and reflector 93 are installed in described apparatus body 91, and lamp-bulb type fluorescent lamp L1 is installed on socket 92.

As mentioned above, general lightings such as the profile of lamp-bulb type fluorescent lamp L1 of the present invention and incandescent lamp bulb are identical with bulb, can obtain the higher characteristics of luminescence, and have it is installed in the use general lighting with on the ligthing paraphernalia 9 of bulb, and do not influence high security of other utensils, electric device etc., can further improve towards the applicability of this utensil 9.

In addition, in described example, be make many, be that 4 glass tubes of turning back are connected in series and form 1 fluorescent tube 40 herein, but also 1 glass tube repeatedly can be turned back and be bent to form fluorescent tube 40, the number of turning back is not limited to 4 groups.In addition, form the continuous imaginary profile of fluorescent tube 40, also can be and the general lighting identical roughly tear type of bulb etc.

In addition, the luminous tube 4 that is formed by glass tube fluorescent tube 40 is covered by lampshade 8, therefore control easily, can be easily mounted in the socket or easily and unload from socket, thereby can reduce the damaged bad generation of fluorescent tube 40, and overall dimension can be identical with common bulb, the bulb in the ligthing paraphernalia that the common bulb that therefore can replace profile to be restricted is used, thus power saving, high efficiency illumination are provided.

In addition, lamp-bulb type fluorescent lamp L1, the L2 shown in the described example utilizes lampshade 8 to cover luminous tube (fluorescent lamp) 4 to have various advantages, but lampshade 8 and nonessential in the lamp-bulb type fluorescent lamp of the present invention.

Promptly, under the situation that does not have lampshade 8, be difficult to handle when inferior though unload at the socket that is installed to fluorescent tube or from the socket of fluorescent tube sometimes, but utilize lampshade 8 and the loss of transmitted light is few, and good air permeability, therefore temperature is difficult to rise, and ultraviolet ray excited effect is active, can improve luminous efficiency.In addition, the member of formation number of packages is few, also can improve economy.

In addition, the present invention is not limited to the lamp-bulb type fluorescent lamp L1～L2 shown in the described example.The fluorescent tube that for example constitutes luminous tube is not limited to fluorescent tube that 1 glass tube is bent to form, many glass tubes that are bent to form are connected in series and form discharge path, in a word also can be by making the glass tube bending drawn glass and become thin-walled near hot cathode is set to face-off mutually.In addition, the curved shape of fluorescent tube also can be the complex of the spirality shown in the example, U font, WU font or described a plurality of shapes.

The support that is encapsulated into the lamp tube end of luminous tube is not limited to use the conical pipe stem, also can use pearl type die post (bead stem) or button stem (button stem).In addition, mercury is not limited to enclose with granular mercury alloy, also can carry out the inclosure of aqueous or plate body.

In addition, among the lamp-bulb type fluorescent lamp L1 shown in the described example, on socket 1, fixture 3 is set across lid 2, described fixture 3 supports luminous tube (fluorescent lamp) 4, and spacer member 35 is set in fixture 3 and is supporting lamp circuit 7, but also can make described fixture 3 and spacer member 35 these 2 members or described lid 2, fixture 3 and spacer member 35 these 3 member dual-purposeizations, promptly be integrally formed as 1 member and support luminous tube (fluorescent lamp) 4 and lamp circuit 7.

Lampshade 8 is to use the synthetic resin material such as glass, Merlon of light transmission and is shaped in addition, has transparent, milky light diffusing or is colored.Though the adding method of described light diffusing, dyeing is to form light diffusing or the dyeing that material self presents, and also can form light diffusing material or coloring agent on transparent lampshade 8 surfaces.And, also can on the part of lampshade 8 or fixture 3 etc., form photo-emission part.

In addition, the imaginary profile of luminous tube (fluorescent lamp) and the profile that covers the lampshade of described luminous tube (fluorescent lamp) are not limited to and the general lighting identical roughly tear drop shape of bulb, also can be the identical spheries of both general shape etc.

In addition, lampshade can use translucent material and be shaped, both can use integrally formed in advance lampshade, also can use in advance in the described roughly maximum gauge portion with the direction of orthogonality of center shaft on, cut apart shaping up and down with being divided into two, and when the assembling fluorescent tube, engage and integrally formed lampshade.

And, also can constitute the tubule that in the space of luminous tube (fluorescent lamp) and lampshade or fixture, lid or socket, sets or lamp circuit part etc. around fill the high filler of thermal conductivity such as silica resin of light transmission, thereby make both hot links.At this moment, heat up even form the fluorescent tube of luminous tube (fluorescent lamp) when fluorescent tube is lit a lamp, utilize filler make heat conduction to thermal capacity greater than on the lampshade of fluorescent tube etc., thereby the temperature that can suppress fluorescent tube rises.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (5)

1. lamp-bulb type fluorescent lamp is characterized in that it comprises:

Lid wherein is being provided with socket on the side;

Luminous tube, has the fluorescent tube that the glass tube bending is formed spiral helicine discharge path, the inboard of the bend that forms on described lamp tube end is setting hot cathode, and lamp tube end is supported on the opposite side of lid, and the thickness of glass of the bend of the lamp tube end that the described hot cathode of its middle distance is nearest is less than other parts;

Lamp circuit is accommodated in the lid; And

The light transmission lampshade covers described luminous tube, and is installed on lid or the socket.

2. lamp-bulb type fluorescent lamp according to claim 1,

The thickness of the part of wherein said hot cathode is less than other positions, and the butt tube inner wall.

3. lamp-bulb type fluorescent lamp according to claim 2, the tube diameter at the position of the part of wherein said hot cathode and tube inner wall butt is greater than the tube diameter at other positions.

4. according to claim 1 or the described lamp-bulb type fluorescent lamp of claim 2, it is characterized in that wherein said lampshade is to be shaped by synthetic resin, and luminous tube has following fluorescent tube, and described fluorescent tube forms at least a portion and has the spirality of diameter greater than the screw diameter of the peristome of lampshade.

5. ligthing paraphernalia is characterized in that it comprises:

Apparatus body;

Socket is arranged on the described apparatus body; And

Be installed on the described socket as claim 1, the described lamp-bulb type fluorescent lamp of claim 2.

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