CN101728220A - Lamp - Google Patents

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Publication number
CN101728220A
CN101728220A CN200910206888A CN200910206888A CN101728220A CN 101728220 A CN101728220 A CN 101728220A CN 200910206888 A CN200910206888 A CN 200910206888A CN 200910206888 A CN200910206888 A CN 200910206888A CN 101728220 A CN101728220 A CN 101728220A
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CN
China
Prior art keywords
mercury alloy
shield member
heat shield
mercury
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN200910206888A
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Chinese (zh)
Inventor
今西音和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hotalux Ltd
Original Assignee
NEC Lighting Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Lighting Ltd filed Critical NEC Lighting Ltd
Publication of CN101728220A publication Critical patent/CN101728220A/en
Pending legal-status Critical Current

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention relates to a lamp, which comprises: a luminous tube (13), a slim tube (19) holding amalgam (20) therein, a lightening circuit (22), a casing (16) and a heat shielding member (18); the slim tube (19) is held in the space enclosed by the heat shielding member (18) and the casing (16), thereby, is disposed in a different space with the lightening circuit (22). The heat generated by the lightening circuit (22) is shielded in the space enclosed by the heat shielding member (18) and the casing (16), so, the temperature rising of the amalgam (20) is inhibited.

Description

Lamp
Cross reference
The application is based on the Japanese patent application No.2008-275017 that submits on October 27th, 2008, and it comprises specification, claim, accompanying drawing and summary.The disclosure of top Japanese patent application all is herein incorporated by reference.
Technical field
The present invention relates to lamp.
Background technology
In recent years, the ball-type fluorescent lamp with luminous tube of good luminous efficient is widely used.According to the structure of this fluorescent lamp, filament in luminous tube or the lighting circuit in fluorescent lamp generate heat when being energized.Because the temperature of mercury alloy that mercury vapour is provided in luminous tube is owing to the heat that so generates increases, so the mercury-vapor pressure in luminous tube also increases.In addition, fluorescent lamp has following characteristic, that is, brightness changes according to the mercury-vapor pressure in the luminous tube, and if mercury-vapor pressure excessively increase, then brightness reduces.Therefore, be necessary to suppress because the temperature of the hot caused mercury alloy that filament or lighting circuit generate raises.
For example, do not examine the open No.2004-234934 of Japanese patent application KOKAI and disclose the fluorescent lamp that between mercury alloy and luminous tube, has circuitry substrate, thereby the photothermal transmission from the luminous tube to the mercury alloy is suppressed.
Do not examine the open No.H07-85709 of Japanese patent application KOKAI and disclose the fluorescent lamp that adopts following structure, that is, luminous tube and mercury alloy are separated each other by the tubule near the extension of pedestal.
Do not examine the open No.S61-63759 of Japanese utility model application KOKAI and disclose the fluorescent lamp that adopts following structure, promptly, in described structure, the inside of shell is divided into first space of placing lamp device and second space of placing luminous tube by spacer, and tubule extends to first space.
In addition, do not examine the open No.H07-65613 of Japanese patent application KOKAI and disclose the fluorescent lamp that adopts following structure, that is, wherein, stabilizer is connected to shell by binding element (bond) etc., thereby is dissipated by binding element by the heat of stabilizer generation.
Summary of the invention
Yet according to all documents, the tubule of lighting circuit and maintenance mercury alloy is set in the same space.Therefore, increase along with the thermal conductance that generates owing to lighting circuit causes the temperature that is provided with in the canaliculate space, the temperature of mercury alloy also increases.Therefore, the mercury-vapor pressure in luminous tube also increases, and causes the reduction of the brightness of fluorescent lamp.
Consider that aforementioned circumstances makes the present invention, and illustrative purpose of the present invention provide a kind of lamp, this lamp can suppress because any temperature of the mercury alloy that the thermal conductance that is generated by lighting circuit causes raises.
Lamp according to first illustrative aspects of the present invention comprises: luminous tube; The mercury alloy holding tube, it is connected to luminous tube and keeps mercury alloy, and mercury alloy provides the mercury vapour in the luminous tube; Lighting circuit, it starts described luminous tube; And heat shield member, it is arranged between lighting circuit and the mercury alloy holding tube.
Lamp according to second illustrative aspects of the present invention comprises: light-emitting device; The mercury alloy holding device is used to keep mercury alloy and is connected to light-emitting device, and mercury alloy provides the mercury vapour in the light-emitting device; Lamp device is used to start light-emitting device; And thermal shield apparatus, it is arranged between lamp device and the mercury alloy holding device.
According to lamp of the present invention,, keep the mercury alloy holding tube of mercury alloy to be set in the space different with lighting circuit by heat shield member.Therefore, can suppress any transmission of the heat that generates by lighting circuit effectively to mercury alloy.Therefore, can be suppressed at any increase of the mercury-vapor pressure in the luminous tube, thereby suppress any reduction of the brightness of lamp.
Description of drawings
Purpose of the present invention and other purposes and advantage can become more obvious from the reading of the following detailed description and accompanying drawing, in the accompanying drawings:
Fig. 1 is the partial section that illustrates according to the schematic structure of the lamp of the embodiment of the invention;
Fig. 2 is the perspective view that illustrates according to the heat shield member of the lamp of embodiment;
Fig. 3 is the plane graph that illustrates according to the heat shield member of the lamp of embodiment;
Fig. 4 is the sectional view that illustrates according to the heat shield member of the lamp of embodiment;
Fig. 5 illustrates the perspective view that wherein is provided with according to the shell of the heat shield member of the lamp of embodiment;
Fig. 6 illustrates the plane graph that wherein is provided with according to the shell of the heat shield member of the lamp of embodiment;
Fig. 7 illustrates the sectional view that wherein is provided with according to the shell of the heat shield member of the lamp of embodiment;
Fig. 8 illustrates the plane graph that wherein is provided with according to the shell of heat shield member, substrate and the tubule of the lamp of embodiment;
Fig. 9 illustrates the sectional view that wherein is provided with according to the shell of heat shield member, substrate and the tubule of the lamp of embodiment;
Figure 10 is the sectional view that the shell of the lamp on the bottom surface that lighting circuit wherein is installed in substrate is shown according to another embodiment of the present invention;
Figure 11 illustrates according to another embodiment of the present invention the sectional view that thermal insulation member wherein is set at the shell of the lamp between patchhole and the tubule;
Figure 12 illustrates the plane graph that has according to another embodiment of the present invention with the shell of the lamp of the heat shield member of hemispherical formation;
Figure 13 is the sectional view that the shell of the lamp that has the heat shield member that comprises the tubular element that can keep tubule according to another embodiment of the present invention is shown.
Embodiment
With the lamp 1 that illustrates with reference to the accompanying drawings according to the embodiment of the invention.As shown in FIG. 1, lamp 1 has lampshade 11, shell 16 and pedestal 23.Lamp 1 also has luminous tube 13, heat shield member 18, tubule 19, mercury alloy 20, substrate 21 and lighting circuit 22, and they all are set in the space that is surrounded by lampshade 11, shell 16 and pedestal 23.
Lampshade 11 is the roughly orbicules with hollow of opening portion.Opening portion is fixed to shell 16 by binding element 15 grades.Lampshade 11 has protection luminous tube 13 and makes the luminous uniform function of luminous tube 13.Therefore, lampshade 11 is formed by the material as clear glass or resin with the inner face that is applied by diffuser 12.
Shell 16 is the roughly cones of hollow with two ends of opening.The opening portion of lampshade 11 is fixed to the opening portion of the broad of shell 16, and pedestal 23 is fixed to its narrower opening portion.Tubule 19, substrate 21 and lighting circuit 22 etc. are maintained in the shell 16.Shell 16 is formed by resin with thermal resistance such as PBT (polybutyleneterephthalate), so that be not out of shape because of heat.
Pedestal 23 has the helical groove that forms in its periphery.Pedestal 23 is detachably connected to unshowned socket.Pedestal 23 is connected to lighting circuit 22 via distribution, thereby electric current flows in lighting circuit 22 by pedestal 23.
Substrate 21 is attached in the shell 16.Lighting circuit 22 is installed on the substrate 21.Substrate 21 forms the plane with the end face (surface towards luminous tube 13 of heat shield member 18) of heat shield member 18, and the edge of the contact heat shield member 18 of substrate 21 is to form with heat shield member 18 corresponding shape.Lighting circuit 22 has: the electrode that starting resistor is applied to the unshowned two ends that attach to luminous tube 13 imposes on the function of this electrode with the function that starts luminous tube 13 and the pre-thermal voltage that will be suitable for luminous tube 13.
Luminous tube 13 is the helix tubes that formed by glass etc., and has the two ends that attach to the retainer 14 that is arranged on shell 16.The electrode that attaches to the two ends of luminous tube 13 is connected to substrate 21.Luminous tube 13 has the inner face that is applied by fluorescent material, and mercury vapour is sealed in the luminous tube 13.Unshowned filament is set at the both ends of luminous tube 13, and voltage imposes on filament by lighting circuit 22.Therefore, the mercury vapour in luminous tube 13 (mercury ion) emitting electrons, and the energy that discharges this moment is ultraviolet ray by radiation.Ultraviolet ray is converted to visible light by fluorescent material.
One end of luminous tube 13 is attached to an end of tubule 19 hermetically.The other end of tubule 19 extend to pedestal 23 near.Tubule 19 is wherein to keep the hollow tube of mercury alloy and thinner than luminous tube 13.Tubule 19 to pedestal 23 outstanding to draw end (leading end) sealed, and mercury alloy 20 is maintained in the hollow space that draws end of tubule 19.
The mercury alloy 20 that remains in the tubule 19 provides mercury ion to the inside of luminous tube 13.Mercury alloy 20 has in the temperature range that liquid phase and solid phase can all exist almost keeps constant characteristic with mercury-vapor pressure.Mercury-vapor pressure in luminous tube 13 is because this specific character of mercury alloy 20 is kept constant.The alloy or the like of alloy, mercury and bismuth that can suitably use mercury and Yin Xi is as mercury alloy 20.
As shown in Fig. 2 to 4, heat shield member 18 forms the part of its side by the shape of opening.In addition, as shown in Fig. 5 to 7, heat shield member 18 has the edge of the inner face that is fixed to shell 16.In this mode, form the space that surrounds by heat shield member 18 and shell 16.
Heat shield member 18 from extend near the end of luminous tube 13 pedestal 23 near.Heat shield member 18 has patchhole 17, and this patchhole 17 is circular and is formed (towards the part of luminous tube 13) at an upper portion thereof.Tubule 19 is inserted in the patchhole 17, and is set in the space that is surrounded by heat shield member 18 and shell 16.
Fig. 8 illustrates the plane graph how substrate 21 that lighting circuit 22 is installed on it is set in the shell 16.Fig. 9 is the sectional view of the line Z-Z ' in Fig. 8.Heat shield member 18 allows to keep the tubule 19 of mercury alloy 20 to be set in the different spaces with lighting circuit 22.Therefore, the heat that is generated by lighting circuit 22 is stopped that by heat shield member 18 any temperature that has suppressed to remain on the mercury alloy 20 in the tubule 19 thus effectively raises.Therefore, the state that mercury alloy 20 keeps wherein solid phase and liquid phase all to exist, and the mercury-vapor pressure in luminous tube 13 kept constant, thereby suppressed any reduction of the brightness of luminous tube 13.
Heat shield member 18 is formed by the heat-insulating material as adiabatic resin.The heat-insulating property of materials used is high more, and then the more heat transfers to mercury alloy 20 are suppressed, and the material of high thermal insulation is preferred for heat shield member 18 thereby have more.Can use polyethylene, polypropylene etc. and as the PBT of the material of shell 16 material as heat shield member 18.
Preferably, heat shield member 18 should closely be fixed to shell 16 by binding element etc.If heat shield member 18 and shell 16 closely are attached at together, then the air-tightness in the space that is surrounded by heat shield member 18 and shell 16 uprises, thereby can stop the heat that is generated by lighting circuit 22 effectively.
Preferably, patchhole 17 has the diameter that equates substantially with the overall diameter of tubule 19.If the interval between patchhole 17 and tubule 19 is narrow, then the air-tightness in the space that is surrounded by heat shield member 18 and shell 16 uprises, thereby can stop the heat that is generated by lighting circuit 22 effectively.
In addition, tubule 19 is present in the space different with luminous tube 13.Therefore, also can stop heat, thereby any temperature that suppresses mercury alloy 20 raises by the filament generation of luminous tube 13.It is desirable to, patchhole 17 should be set at the position that allows to use straight tubule 19.If tubule 19 is straight, then the formation of tubule 19 is easy.When lamp 1 was assembled, this helped tubule 19 to be inserted in the patchhole 17.
Though provided the explanation of embodiments of the invention, the present invention is not restricted to previous embodiment, and can change in a variety of forms and revise.
For example, provided heat shield member 18 wherein and be fixed to the explanation of the example of shell 16, but can use the shell 16 that forms single-piece with heat shield member 18 by binding element etc.
The position of patchhole 17 can suitably change according to the position of tubule 19.Can use crooked tubule 19 to replace straight tubule 19.
As shown in Figure 10, lighting circuit 22 can be installed on the bottom surface (towards the face of pedestal 23) of substrate 21.
As shown in Figure 11, thermal insulation member 24 can be set between patchhole 17 and the tubule 19, to be filled in the interval between patchhole 17 and the tubule 19.If not at interval, then keep the air-tightness in the space of tubule 19 to keep well between patchhole 17 and tubule 19, thereby the heat that is generated by lighting circuit 22 can not be transferred to this space.Therefore, can suppress effectively because the temperature of the mercury alloy 20 that the thermal conductance that is generated by lighting circuit 22 causes raises.Can use member as thermal insulation member 24 with the shape that is suitable for the interval between tubule 19 and the heat shield member 18, perhaps can use filler as thermal insulation member 24, this filler is filled in this interval after tubule 19 is inserted in the patchhole 17.
About the shape of heat shield member 18, can adopt Any shape, as long as can stop the heat that generates by lighting circuit 22.For example, as shown in Figure 12, heat shield member 18 can form hemispherical.The size in the space that keeps tubule 19 can optionally be set in addition.
Heat shield member 18 is not fixed to shell 16 and is fine.For example, as shown in Figure 13, can keep the tubular element of tubule 19 can be used as heat shield member 18 therein.Substrate 21 has heat shield member 18 can be from its hole of passing.The tubulose heat shield member 18 of the end with opening is set, and tubule 19 is from this openend of heat shield member 18 is inserted into space the heat shield member 18 in this hole.Thermal insulation member 24 is set in the interval between tubule 19 and the heat shield member 18.Therefore, the heat that is generated by lighting circuit 22 is stopped by heat shield member 18.This any temperature that has suppressed mercury alloy 20 raises.
About luminous tube 13, except spiral type, can also use various luminous tubes, such as U type, W type, saddle type etc.
The present invention can be applied to the lamp with lampshade 11, does not promptly have the lampshade lamp.
In addition, the present invention is not restricted to the lamp with E type pedestal, but can be applied to the lamp that for example has the GX53 pedestal.
Under the situation that does not break away from spirit and scope widely of the present invention, can make various embodiments and change.The foregoing description is intended to illustrate the present invention, rather than limits the scope of the invention.Scope of the present invention is illustrated rather than embodiment by claims.In the meaning of the equivalent of claim of the present invention and the multiple modification of in claim, making be considered in scope of the present invention.

Claims (10)

1. lamp comprises:
Luminous tube (13);
Mercury alloy holding tube (19), described mercury alloy holding tube (19) are connected to described luminous tube (13) and keep mercury alloy (20), and described mercury alloy (20) provides the mercury vapour in the described luminous tube (13);
Lighting circuit (22), described lighting circuit (22) starts described luminous tube (13); With
Heat shield member (18), described heat shield member (18) are arranged between described lighting circuit (22) and the described mercury alloy holding tube (19).
2. lamp according to claim 1, also comprise shell (16), end at described shell (16) is provided with pedestal (23), the other end at described shell (16) is provided with described luminous tube (13), in described shell (16), keep described lighting circuit (22) and described mercury alloy holding tube (19), and wherein
Described heat shield member (18) is set in the described shell (16) with the transmission to described mercury alloy (20) of the heat that suppresses to be generated by described lighting circuit (22).
3. lamp according to claim 2, wherein
Described heat shield member (18) and described shell (16) form the space of sealing together, and
The part of the described mercury alloy of maintenance (20) of described at least mercury alloy holding tube (19) is maintained in the space of described sealing.
4. lamp according to claim 3, wherein
Described heat shield member (18) is formed with patchhole (17), and
Described mercury alloy holding tube (19) is inserted in the space of described sealing via described patchhole (17).
5. lamp according to claim 1, wherein
Described heat shield member (18) and described mercury alloy holding tube (19) each all extend to described pedestal (23) near, and
Described mercury alloy (20) is set near the part place described pedestal (23) of described mercury alloy holding tube (19).
6. lamp according to claim 1, wherein said heat shield member (18) form the shape of part of the described mercury alloy of maintenance (20) of the described at least mercury alloy holding tube of covering (19).
7. lamp according to claim 6, wherein
Described heat shield member (18) forms the space of sealing, and
The part of the described mercury alloy of maintenance (20) of described at least mercury alloy holding tube (19) is maintained in the space of described sealing.
8. lamp according to claim 6, wherein
Described heat shield member (18) is formed with patchhole (17), and
Described mercury alloy holding tube (19) is inserted in the space of described sealing via described patchhole (17).
9. lamp according to claim 1, wherein said heat shield member (18) is formed by heat-insulating material.
10. lamp comprises:
Light-emitting device (13);
Mercury alloy holding device (19), described mercury alloy holding device (19) is used to keep mercury alloy (20), described mercury alloy (20) provides the mercury vapour in the described luminous tube (13), and described mercury alloy holding device (19) is connected to described light-emitting device (13);
Lamp device (22), described lamp device (22) is used to start described luminous tube (13); With
Thermal shield apparatus (18), described thermal shield apparatus (18) are arranged between described lighting circuit (22) and the described mercury alloy holding tube (19).
CN200910206888A 2008-10-27 2009-10-27 Lamp Pending CN101728220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-275017 2008-10-27
JP2008275017A JP2010103024A (en) 2008-10-27 2008-10-27 Fluorescent lamp

Publications (1)

Publication Number Publication Date
CN101728220A true CN101728220A (en) 2010-06-09

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Application Number Title Priority Date Filing Date
CN200910206888A Pending CN101728220A (en) 2008-10-27 2009-10-27 Lamp

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CN (1) CN101728220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104416153A (en) * 2013-08-26 2015-03-18 上海亚尔光源有限公司 Silver tin mercury alloy particle and preparation technology thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60225348A (en) * 1984-04-20 1985-11-09 Nec Home Electronics Ltd Fluorescent lamp device
CN1159655A (en) * 1995-12-07 1997-09-17 通用电气公司 Fluorescent lamp with thermal-shielding plate between lamp tube and ballast circuit
CN1805107A (en) * 2005-01-14 2006-07-19 东芝照明技术株式会社 Bulb type fluorescent lamp and illumination device
CN200969339Y (en) * 2006-09-28 2007-10-31 中山市欧普照明股份有限公司 Bulb type solid mercury fluorescent lamp
CN101218463A (en) * 2005-07-07 2008-07-09 东芝照明技术株式会社 Bulb type fluorescent lamp and illuminator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60225348A (en) * 1984-04-20 1985-11-09 Nec Home Electronics Ltd Fluorescent lamp device
CN1159655A (en) * 1995-12-07 1997-09-17 通用电气公司 Fluorescent lamp with thermal-shielding plate between lamp tube and ballast circuit
CN1805107A (en) * 2005-01-14 2006-07-19 东芝照明技术株式会社 Bulb type fluorescent lamp and illumination device
CN101218463A (en) * 2005-07-07 2008-07-09 东芝照明技术株式会社 Bulb type fluorescent lamp and illuminator
CN200969339Y (en) * 2006-09-28 2007-10-31 中山市欧普照明股份有限公司 Bulb type solid mercury fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104416153A (en) * 2013-08-26 2015-03-18 上海亚尔光源有限公司 Silver tin mercury alloy particle and preparation technology thereof

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Application publication date: 20100609