CN100480574C

CN100480574C - Fastening type spring clip for ceramic screened lamp

Info

Publication number: CN100480574C
Application number: CNB031434932A
Authority: CN
Inventors: D·J·小拉姆普雷; E·L·麦克库罗
Original assignee: Osram Sylvania Inc
Current assignee: Osram Sylvania Inc
Priority date: 2002-09-30
Filing date: 2003-09-30
Publication date: 2009-04-22
Anticipated expiration: 2023-09-30
Also published as: EP1403905A3; EP1403905A2; CN1497209A; JP2004127939A

Abstract

A spring clip (10) has a base (12) in a first plane and has an aperture (14) centrally located therein. U-shaped projections (16) and (18) are provided on the base (12) and are formed from first and second upstanding walls (20) and (22) and third and fourth walls (24) and (26), at each end of the base (12). A first lip (28) extends orthogonally between the first wall and second wall in a second plane and a second lip (29) extends orthogonally between the third wall and fourth wall, also in the second plane. The second plane is substantially parallel to the first plane but spaced therefrom. Extensions (30) and (32) are formed with the first wall and the third wall and project away from them. The extension are in substantially the same plane as base (12) and at least one flag (34) can be formed with at least one of the extensions. The flags (34) project away from the extensions (32) in a plane transverse to the first and second planes and allow the clips to be attached to a frame.

Description

The fastening type spring clip that is used for ceramic screened lamp

Technical field

The present invention relates to especially arc discharge lamp of light fixture.More particularly, the arc discharge lamp that the present invention relates to adopt ceramic arc light tube, protective cover or radome and arc-tube has been installed in the erecting device in the radome.

Background technology

Metal halide arc discharge lamp is owing to its higher luminous efficacy and the life-span of length is usually used in commercial the application.Typical metal halide arc discharge lamp comprises the arc-tube of quartz or vitreosil, and it is sealed in the shell of Pyrex.The ceramic arc light tube of for example being constructed by polycrystal alumina has been adopted in latest developments in this area.The invention particularly relates to back one type.Self sealed arc-tube has and is sealed in the tungsten electrode in its opposite end and contains packing material, and this packing material can comprise that mercury, metal halide additives and rare gas start promoting.In the especially high-power light fixture of certain situation, in shell, filled less than atmospheric nitrogen or other inert gas.In the especially lower powered light fixture of some other situation, shell is pumped into vacuum.

Have been found that hope can provide the metal halide arc discharge lamp that has radome, radome comprises tubular transmission element such as quartz usually, and it can bear higher operating temperature.Arc-tube and radome are co-axially mounted in the lamp outer casing, and arc-tube is in the radome.Radome is the pipe of open at both ends preferably.

Use in the light fixture of the arc-tube of being made by materials such as quartz or vitreosils at those, arc-tube has the body of generally tubular, and it is sealed by tightening up the formula seal at the place, end.Tightening up the formula seal provides the zone of flattening on arc-tube, make and himself can accept mounting structure, and the two is positioned at arc-tube in radome or the protective cover together, and allows on the total installation suitable framework in the enclosure.

Radome or protective cover have several favorable influences for the work of light fixture.In the light fixture of the shell that has the gas filling, radome has reduced the convective heat loss who is derived from arc-tube, thereby has improved the colour temperature of light output and lamp.In the light fixture that has the shell of finding time, radome helps the temperature of balance arc light pipe.In addition, on the inner surface of shell, has in the metal halide lamp of fluorescent coating the maintenance that radome can reduce the loss of sodium effectively and improve fluorophor efficient.At last, if the light fixture fragmentation, radome can be used as protective device, thereby has improved the security of light fixture.

In using the light fixture of ceramic arc light tube, with arc-tube be installed in the radome be very difficult and cost higher.Ceramic arc light tube has the body that is generally bulbous shaped of tubulose, and the cylindrical capillary of pottery extends out from body.This capillary is less relatively, has the diameter of 3 millimeter usually, and includes electrode.

Summary of the invention

Therefore, an object of the present invention is to eliminate the shortcoming of spring clip especially relevant in the prior art with the installation ceramic arc light tube.Another object of the present invention is to improve the installation of arc-tube in radome.Another purpose of the present invention is to realize these purposes in mode cheaply, and provides and have the installation component that cost reduces.Another object of the present invention provides the installation component of the arc-tube that can just can make with manual operations seldom.

These purposes realize by following characteristics.

In one aspect of the invention, these purposes realize that by a kind of spring clip this spring clip comprises the base that is arranged in first plane and has the hole that is in the center.Be provided with the U-shaped projection on base, they are formed with first and second upstanding walls and third and fourth upstanding wall, respectively have a upstanding wall at each place, end of base.First flange vertically extends in second plane and between the first wall and second wall, and second flange also vertically extends in second plane and between the 3rd wall and wall.Second plane and first plane are substantially parallel but be spaced from.On first wall and the 3rd wall, be formed with therefrom outstanding extension.This extension is in the same plane with base basically, and has formed at least one baffle plate (flag) at least one extension.Baffle plate is given prominence to away from the extension on the plane vertical with first and second planes, and allows clip is connected on the framework as described below.

Clip is used to provide the assembly that is installed in the arc-tube in the radome.This assembly comprises light source, and it has the longitudinally center and the outstanding opposed end of axis arranged, and the cross section of these ends is cylindrical.The tubular shielding cover has surrounded light source and coaxial with longitudinal axis.Radome has two ends and given wall thickness.Be installed in by U-shaped projection on the wall of radome and just a pair of spring clip can be set, respectively have one at each end of radome with clip.Arc-tube is located between the clip, and the end of arc-tube is included in the hole of clip base.Clip can be made economically, is easy to use, and can avoids the ergonomics problems relevant with existing method.Clip also is suitable for automatic assembling, and this has further reduced the cost of the light fixture that uses this clip.

In addition, in another aspect of this invention in, these purposes realize that by a kind of arc-tube installed part with spring clip this spring clip comprises the base that is positioned at first plane and has the hole that is in the center.First end at base is provided with the U-shaped projection, and it has first and second upstanding walls.First flange vertically extends in second plane and between the first wall and second wall.The second end place at base has formed the 3rd upstanding wall, has formed the extension in the 3rd wall, and it stretches out away from the 3rd wall in second plane.

In a preferred embodiment of the invention, be inserted into by cylinder-shaped end in the centre bore of spring clip ceramic arc light tube, by friction arc-tube is remained in the hole, by on the edge that the U-shaped projection is installed in the tubular shielding cover arc-tube being installed in the radome, use radome and spring clip in this way then.By forming the U-shaped projection, just arc-tube can be remained in the radome so that it provides spring tension on radome.Second spring clip is arranged on the other end of arc-tube, and engages with the other end of radome similarly.In another preferred embodiment of the present invention, as described hereinafter, by in the multiple appropriate device any just can be with the extension or the baffle plate that forms one with it be connected on the framework.

Description of drawings

Fig. 1 is the perspective view of an embodiment of clip of the present invention;

Fig. 2 is its front view;

Fig. 3 is the front view that places the part of the clip of the present invention on the radome to cut open;

Fig. 4 is installed in the front view that the part of the arc-tube in the radome is cut open by spring clip of the present invention;

Fig. 5 is the perspective view of spring clip shown in Figure 1;

Fig. 6 is the fragmentary, perspective view of the alternative of spring clip;

Fig. 7 is the fragmentary, perspective view of another alternative of spring clip;

Fig. 8 is the fragmentary, perspective view of the another alternative of spring clip; With

Fig. 9 is the fragmentary, perspective view of the another one alternative of spring clip.

The specific embodiment

In order to understand the present invention and other purpose, advantage and performance better, will the present invention be described in conjunction with above-mentioned accompanying drawing and with reference to following disclosure and appended claims.

Now in more detail with reference to the accompanying drawings, shown spring clip 10 in Fig. 1 and 2, it comprises the base 12 that is positioned at first plane and has the hole 14 that is in the center.U-shaped

projection

16 and 18 is located on the base 12, and has formed first and second

upstanding walls

20 and 22 and third and fourth

upstanding wall

24 and 26 at each end of base 12.First flange 28 vertically extends in second plane and between the first wall and second wall, and second flange 29 also vertically extends in second plane and between the 3rd wall and wall.Second plane and first plane are substantially parallel but be spaced from.Be formed with

extension

30 and 32 on first wall and the 3rd wall, they are outwards given prominence to from these walls.Extension and base 12 are in the same level basically, and have formed at least one baffle plate 34 at least one extension.Two baffle plates 34 in Fig. 1 and 2, have been shown.Baffle plate 34 is outwards outstanding from extension 32 in the plane vertical with first and second planes, and allows clip to be connected on the framework as described below.

Now referring to Fig. 3, it has shown the assembly 40 that is used for light fixture.This assembly comprises light source 42, and for example ceramic arc light tube 44, and it has the bulbous center 46 that axis longitudinally 52 arranges and the

opposite end

48,50 of projection.The cross section of these

ends

48,50 is cylindrical.Tubular shielding cover 54 has surrounded light source 42 and coaxial with longitudinal axis 52.Radome 54 has two

ends

56,58 and given wall thickness.

By U-shaped

projection

16 and 18 being installed in the end of radome, just spring clip 10 can be installed on the radome 54 each one of each end.In a preferred embodiment of the invention, the wall of U-shaped projection forms and becomes 88 ° angle with vertical line, as shown in Figure 2, thereby can produce frictional fit with

wall.By constructing flange

28 and 29, the deviation that just can regulate the radome wall thickness greater than the given wall thickness of radome.

Each end 48 of light source 42; Be bonded in the hole 14 of clip 50 friction-types.Clip and light source being installed on the radome with after forming sub-assemblies, just this sub-assemblies can be installed on the framework 60, this for example can realize by baffle plate 34 is soldered on the framework.This framework is connected on traditional flash of light part (flare) 62, then so that be assembled in the lamp outer casing.Perhaps, can earlier framework be installed on the flash of light part, the sub-assemblies with radome and arc-tube is installed on the framework then.

Like this, this structure just provides economic assembling for the discharge lamp that adopts radome.Clip itself is easy to make, and provides good support structure for arc-tube or other light source are installed.

Again in more detail with reference to the accompanying drawings, in Fig. 4, shown the assembly 110 that is used for light fixture.This assembly 110 comprises light source 112, and it has the longitudinally center cavity 114 and relative end 116,118 of axis 119 layouts.The cross section of end 116,118 is cylindrical.Light source 112 is the arc discharge chambeies by the polycrystal alumina structure in this example.

Tubular shielding cover 120 has surrounded light source 112 and coaxial with longitudinal axis 119.

By spring clip 126 light source 112 is installed in the radome 120, wherein a spring clip all has been installed, the also visible Fig. 5 of spring clip 126 at each end of radome.Each spring clip includes the base 128 that is positioned at first plane, and it has the hole 130 that is in the base center, for example star-shaped aperture.Hole 130 in these two spring clips respectively with the end 116,118 of light source 112 in a friction-type ground engage.

Each spring clip 126 has U-shaped projection 132 at 133 places, end of base 126.This U-shaped projection comprises that first and second upstanding walls, 134,136, first flanges 138 that link to each other by first flange 138 extend and are installed on the wall of radome 120 in second plane.The upstanding wall such as the wall 136 of U-shaped projection form the spring tension that can be provided for clamping the radome wall.

The second end 142 places at base 128 have formed the 3rd upstanding wall 140, and it is provided with extension 144, and outwards give prominence to from wall 140 in second plane this extension 144.

Extension 144 is connected on the framework 146 so that this assembly to be installed.In the embodiment shown in fig. 4, framework 146 can be the part of a lead-in of light fixture, and the electrode 148 that stretches out from end 116 can be connected on the arm 150 of framework 146 by electric mode and mechanical system.Second electrode 150 that stretches out from end 118 can be connected on second lead-in 152 by electric mode and mechanical system.

In the embodiment shown in fig. 4, formed baffle plate 154 on extension 144, it extends away from extension 144 on the plane vertical with first and second planes, links to each other with framework by this baffle plate 154 just.

The alternative that in Fig. 6-9, has shown the second end 142.

Now referring to Fig. 6, the second end 142 of spring clip 126 has elongated extension 144a, and it is provided with framework accommodation hole 156 to be pressed on the wire frame 146.

Embodiment shown in Figure 7 comprises tension member 158, and it forms towards framework 146 and inwardly stretches out, and framework 146 is exerted pressure so that assembly 110 is remained on the framework 146.

Be provided with the second hole 156a in the embodiment shown in fig. 8, it is spaced apart with first hole 156 but align with it.Tension member 158a can also be set.

In the embodiment shown in fig. 9, following plumbing arm 160 be provided with groove 162 be stuck in wire frame 146 around.

The spring clip of the shown here and multiple pattern introduced stainless steel preferably wide by 6.35 millimeters (0.25 ") and 2.54 millimeters (0.10 ") thick continuous strip is made.For very economical structure, stampings is less than 10%.Clip four positions with the internal diameter (ID) of radome as benchmark, and the difference that allows to regulate radome glass ID.For each installation, only need carry out twice welding and just assembly can be connected on the framework, and this being welded in the plane finish, thereby assembly automatically can be welded on the framework.

Though shown and introduced and be considered to the preferred embodiments of the present invention at present, yet for a person skilled in the art clearly, under the prerequisite that does not break away from the scope of the present invention that is defined by the following claims, can carry out variations and modifications to the present invention.

Claims

1. a spring clip is characterized in that, described spring clip comprises:

Be arranged in first plane and have the base (12) in the hole (14) that is in the center;

Be located at the U-shaped projection (16,18) at the first end place of described base, it comprise first and second upstanding walls (20,22) and

Be positioned at least one the 3rd upstanding wall (24) at the second end place of described base;

First flange (28) that in second plane and between the described first wall and second wall, vertically extends;

At least one extension (30), its be formed on in the described first and the 3rd wall at least one and along away from the described first and the 3rd wall described at least one direction and give prominence to.

2. spring clip according to claim 1 (10) is characterized in that, described spring clip comprises:

Be positioned at the U-shaped projection (16,18) of the each end of described base, it comprises first and second upstanding walls (20,22) and third and fourth upstanding wall (24,26);

Second flange (29) that in described second plane and between described third and fourth wall, vertically extends, described second plane and described first plane are substantially parallel;

At least one baffle plate (34), it extends away from described extension in the plane vertical with described first and second planes.

3. spring clip according to claim 1 (126) is characterized in that, described spring clip comprises:

Be arranged in first plane and have the base (128) in the hole (130) that is in the center;

Be positioned at the U-shaped projection (132) that the first end (133) of described base (126) is located, it comprises first and second upstanding walls (134,136);

First flange (138) that in second plane and between the described first wall and second wall, vertically extends; With

Be formed at the 3rd upstanding wall (140) at the second end place of described base, and the extension (144) that is positioned at described second plane, itself and described the 3rd wall form one and give prominence to away from the direction of described the 3rd wall on the edge.

4. spring clip according to claim 3 is characterized in that, at least one baffle plate (154) forms one with described extension, and described baffle plate is given prominence to away from described extension in the plane vertical with described first and second planes.

5. assembly (40) that is used for light fixture comprising:

Light source (42), it has the center (46) that axis (52) longitudinally arranges and the opposed end (48,50) of projection, and the cross section of described end is cylindrical;

Tubular shielding cover (54), it has surrounded described light source (42) and coaxial with described longitudinal axis (52), and described radome has two ends (56,58) and given wall thickness, and its improvement part comprises:

End at described radome (54) is provided with at least one spring clip (10), and described spring clip (10) is as described in the claim 1 to 4 each.

6. assembly according to claim 5 (40) is characterized in that, described assembly comprises:

A pair of spring clip (10), each end of described radome (54) respectively has a described spring clip (10), each described spring clip includes the base (12) that is positioned at first plane and has the hole (14) that is in the center, a friction-type ground engages in the described cylinder-shaped end (48,50) of the described light source of each Kong Junyu (42) of described spring clip;

Be positioned at the U-shaped projection (16,18) at each place, end of described base, it comprises first and second upstanding walls (20,22) and third and fourth upstanding wall (24,26), and described U-shaped projection (16,18) is installed on the wall of described radome (54);

First flange (28) that is positioned at second plane and between described first and second walls (20,22), vertically extends;

Be positioned at second plane and between described third and fourth wall (24,26), vertically extend second flange (29), described second plane and described first plane are substantially parallel; With

In at least one extension (30,32), itself and the described first and the 3rd wall at least one form one and along away from the described first and the 3rd wall described at least one direction and give prominence to;

The described first and the 3rd wall be in described radome outer surface near, and described second and wall be in described radome inner surface near.

7. assembly according to claim 6 is characterized in that, at least one baffle plate (34) forms one with at least one described extension, and described at least one baffle plate extends away from described extension in the plane vertical with described first and second planes.

8. assembly according to claim 5 is characterized in that, described assembly comprises:

At least one is positioned at the spring clip (126) of an end of described radome (120), described spring clip (126) comprises the base (128) that is arranged in first plane and has the hole (130) that is in the center, a friction-type ground in the described hole (130) of described spring clip (126) and the described cylinder-shaped end (116,118) of described light source engages;

Described spring clip (126) has the U-shaped projection (132) at an end place that is positioned at described base (128), and it comprises first and second upstanding walls (134,136), and described U-shaped projection is installed on the wall of described radome;

First flange (138) that in second plane and between described first and second walls, vertically extends; With

Be formed at the 3rd upstanding wall (140) that the second end (142) of described base is located, and the extension (144) that is positioned at described second plane, itself and described the 3rd upstanding wall form one and along giving prominence to away from the direction of described the 3rd upstanding wall.

9. assembly according to claim 8 is characterized in that, described assembly (110) be arranged on wire frame (146) near, described extension (144) link to each other with described wire frame.

10. assembly according to claim 8, it is characterized in that, at least one baffle plate (154) and described extension (144) form one, described at least one baffle plate (154) in the plane vertical with described first and second planes away from described extension (144,144a) extend; Described assembly (110) be arranged on wire frame (146) near, described baffle plate (154) links to each other with described wire frame.

11. assembly according to claim 8 is characterized in that, and described extension (144,144a) have the hole (156) that can engage with described wire frame.

12. assembly according to claim 10 is characterized in that, engages described hole (156) and described wire frame friction-type.

13. assembly according to claim 8 is characterized in that, and described extension (144,144a) comprise hanging portion (158,160), described hanging portion (158,160) forms and can engage with described wire frame (146).

14. assembly according to claim 13 is characterized in that, described wire frame (146) comprises lead, and described hanging portion (160) is provided with groove to hold described wire frame.

15. according to Claim 8,9,10,11,12 or 13 described assemblies is characterized in that, are provided with two described spring clips (126), all have one respectively holding of described radome.