MXPA05003211A - Lamp base adapter - Google Patents

Abstract

A lamp adapter can adapter a mogul base lamp holder to accept a medium base lamp. The lamp adapter can accommodate only open fixture rated lamps. An open end of the lamp adapter into which a lamp is inserted has an elongated flange which allows onlyan open fixture rated lamp having a medium base to be completely threaded into the adapter and make electrical contact with a threaded metal sleeve and central button contact of the lamp holder. The geometry of the elongated flange prevents the threading of a closed fixture rated lamp into the adapter by taking advantage of the physical differences between the open and closed fixture rated lamps.

Description

BASE LAMP ADAPTER This application claims the benefit of the filing date of a provisional application that has serial number 60 / 555,621 that was filed on March 23, 2004.

BACKGROUND OF THE INVENTION FIELD OF THE INVENTION This invention relates to an electrical adapter for a lamp classified as an open appliance that is unsuitable for a lamp c / asified from a closed appliance.

ANTECE TEACHERS OF THE RELATED TECHNIQUE The metal halide shields may include a centrally placed arc tube relatively located in the confines of an outer glass bulb. These arc tubes can be made of quartz and operate at high temperatures and high pressures with respect to ordinary incandescent lamps. Under certain conditions (for example, at the end of the life of the lamp) a failure of the system or internal factors can result in a safety hazard being created, so that a violent breakage of the arc tube will send glass parts and of hot lamps towards contact with the glass of the bulb and which, in turn, can be broken releasing hot glass and lamp parts to the surrounding environment. Under such conditions, there is an obvious risk of personal severe injury, fire and / or property damage. For this reason, such conventional metal halide lamps are normally supported within what may be termed "enclosed" artifacts whose structure is designed to contain glass parts and hot lamps violently released. A cover lens can be used in such artifacts. In addition, significant reductions in such potential violent failures can be achieved by replacing lamps before the calculated end of lamp life. Another conventional manner in which such a potential for violent failures is reduced includes that the user periodically extinguishes the lamp to allow the lamp to cool, so that upon re-ignition, a non-violent or less violent failure of the lamp is facilitated. A lamp classified as an open appliance is a high-pressure metal halide lamp which, at the end of its life, will not explode or emit dangerous glass fragments. Lamps that are classified as open fixtures may be suitable for operation in open fixture designs. These types of lamps can highlight ultraviolet (UV) protective quartz and a secondary sheath that surrounds the arc tube to prevent dethronement of the glass in the event of a break. Metal halide lamps classified as open fixtures offer significant advantages for users over closed fixture lamps, which can be destroyed at the end of their life. Lamps classified as open fixtures can expand lighting options by (1) eliminating the need for cover lenses, (2) making lamp replacement easier, and (3) removing a source of dirt buildup that reduces production of light. However, the main reason for selecting open, wrapped lamps is to protect people and property. In the past, many Mughal-based metal halide lamps were covered only. The newer arc chambers now have a smaller size. The smaller size of the newer arc chambers may make it possible to add a protective, heavy quartz wrap within the body of the lamp. The heavy wrap provides containment of hot, internal arc particles if a non-passive lamp failure occurs. These lamps can be classified for operation in open appliances. It is possible to eliminate enclosing a lamp in an artifact for security reasons. Operating the metal halide lamp on an open appliance can also help eliminate reduced lighting efficiency and operating temperatures Potentially higher reached by the artifact protective enclosures. A lamp classified as an open artifact can be visually distinguished from an artifact lamp with closed classification. A ral contact button design of the base of the lamp matches only with an open sorting socket used in an open appliance. This ensures the continuous safe operation of the open appliance by avoiding using lamps or replacing lamps with a lamp of another type. The advent of metal halide lamps classified as open artifacts has provided an opportunity for users to use those lamps in existing open artifacts. Those existing open fixtures may have lamp holders for lamps known as "mogol" threaded holders. Both open and closed metal halide lamps may have a medium lamp base, which will not be screwed into the Mughal lampholder.

BRIEF DESCRIPTION OF THE INVENTION Techniques and methods are described for an adapter for adapting a Mughal based lamp fixture to tie electrically with a medium base lamp classified as an open fixture only and to avoid a tie with a medium base lamp classified as a closed fixture. The adapter takes advantage of the geometric differences between the lamps classified as an open appliance and the lamps classified as a closed appliance. A lamp holder adapter includes a lamp base adapter for matching with a medium base lamp and for screwing into a lamp holder base mogul. An eyebrow extends from a first end of the adapter of the base of the lamp in a sufficient length to avoid that the base adapter of the lamp is tied with a lamp classified as closed artifact. The lamp holder adapter can have a first end open and a second end closed. The perforation may have a first section in the first open end. A first threaded conductor handle can be mounted on the hollow perforation and a second threaded conductor handle on an external surface of the base adapter of the lamp. Some of the implementations of the techniques described may include one or more of the following advantages. The adapter may allow an existing open fixture lamp fixture that accepts a Mughal base lamp to be replaced with a medium base lamp classified as an open fixture. The adapter can prevent a user from installing a lamp classified as a closed appliance in an open appliance lamp holder. The foregoing and other advantages of the invention will become apparent from the following detailed description when taken with the accompanying drawing. It will be understood, however, that the drawing is for the purpose of illustration and should not be construed as defining the scope or limits of the invention, reference being made for the final purpose to the claims appended hereto.

BRIEF DESCRIPTION OF THE DIAMETERS Preferred embodiments of the present application are described herein with reference to the drawings in which similar elements are given like reference characters, wherein: Figure 1 is an illustration of a lamp classified as a closed appliance; Figure 2 is an illustration of a lamp classified as an open artifact; Figures 3A and 3B illustrate a lamp holder adapter of the prior art; Figure 4 is an illustration of an adapter according to the techniques currently described; and Figures 5A and 5B illustrate a lamp classified as an open appliance and a lamp classified as a closed appliance that is tied with the adapter of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION The described lamp adapter can only accommodate lamps classified as an open appliance that have a medium base. The open end of the lamp adapter in which a lamp is inserted has an elongated eyebrow that only allows a lamp classified as an open appliance having a medium base to be fully threaded into the adapter and to make electrical contact with a threaded metal handle and central button contact of the lamp holder. The geometry of the elongated eyebrow avoids the threading of a lamp classified as an artifact closed in the adapter taking advantage of the physical differences between lamps classified as open and closed artifacts. Figure 1 is an illustration of a metal halide lamp 1 0 intended for use in a "closed" appliance. The lamp 10 may have a glass bulb 12 into which a quartz arc tube 14 may be placed. The bulb 12 may also have a base 16 of screw metal with a lower portion containing threads 18 of the metal base. In one implementation, the threads of the base are medium American American Standard threads. The base 16 can be made of any conductive metal such as copper or a copper alloy. A relatively metal button 20, often referred to as a weld or button, also made of metal can be mechanically, but not electrically, attached to the end of the base 16 by an insulator 22, such as a non-conductive ceramic as is well known in the art. technique. The base 16 is connected to one side of the arc tube 14 while the contact 20 is connected to the other. A lower portion 50 of the bulb 12 is wider than that of a bulb classified as a comparable open device. Figure 2 is an illustration of a metal halide lamp 30 intended for use in an "open" appliance. The lamp classified as an open artifact may have a glass bulb 32 and a quartz arc tube 34. The lamp classified as an open artifact may have a wrap 36. The wrap may be made of quartz and placed around the arc tube 34. A metal screw base 38 has metal base threads 40 in its lower portion. An extension 42 of an insulating material can attach the metal button 44 to the screw base 38 by an insulating eyebrow 46. One side of the arc tube 34 can be connected to the metal screw base 38 while the other side is connected to the button 44. A lower portion 52 of the bulb 32 is narrower than that of a bulb classified as a comparable closed artifact, as described before. Figures 3A and 3B illustrate a top view and a front section view of a prior art lamp base adapter 300. The adapter may have a body 72, which defines an internal cavity 31 0 open at a first end 306 and substantially closed at a second end 308. The body 72 may be made of an insulating material. A metal handle 74 can be mounted in the internal cavity 31 0 to form a lampholder. The metal handle 74 may be threaded 78 to receive threads from the base of a medium base threaded lamp as described above. The body 72 may have an opening 82 under the button of the metal handle 74. The lower opening 82 may be a cavity 84 in the body 72. An outer metal handle 304 may be coupled with an outer surface of the body 72. The outer metal handle may be threaded, for example, to be tied with a threaded lamp holder. Mogul. An eyebrow 302 may be formed in the upper aperture 306 of the body 72. However, both lamps classified as open fixtures and lamps classified as closed fixtures may be threaded into the metal handle 74 of the adapter. Figure 4 illustrates a lamp adapter 400 according to the present disclosure. The lamp adapter 400 has an elongated eyebrow 406 extending axially from an upper portion 412 of the lamp adapter of the lamp adapter. The length of the elongate eyebrow 406 is dimensioned to prevent a lamp classified as a closed appliance from being completely screwed into an internal threaded metal handle, or lampholder 414. The length of the elongated eyebrow 406 is also sized to allow a lamp classified as open device is completely threaded into handle 414 of internal threaded metal. Thus, the adapter 400 discriminates between lamps classified as a closed appliance and as an open appliance taking advantage of the different geometries of the two types of lamps. The adapter 400 may have an outer metal handle 402 coupled to an outer surface of the button portion 410. The outer metal handle may be threaded 404, for example, to be tied with a Mug holder screw 416, which is not part of the invention. The lamp adapter 400 may be used to adapt a lamp classified as an open appliance having a medium base to an existing lamp holder 416 having a 418 thread of a Mughal base. The external metal handle 404 of the adapter can be screwed into a Mug holder screw 416. A lamp 420 classified as an open appliance having a medium base 422 can be screwed into the medium threaded socket 414 of the adapter. Electrical connections (not shown) can be made from the lamp holder to the adapter in any convenient manner. A) Yes, an existing lamp holder that is an open appliance that only previously tied with lamps with a base, can be adapted to replace the lamp with metal halide lamps. The adapter can also prevent a user from inadvertently replacing the lamp with a lamp classified as a closed appliance and creating a potentially dangerous condition. Figures 5A and 5B illustrate a lamp 502 classified as an open appliance and a lamp 504 classified as a closed appliance used with an adapter 500 according to the present disclosure. Referring to Figure 5A, lamp 502 classified as open artifact has a lower portion 506 narrower than lower portion 508 of lamp 504 classified as a closed artifact. An elongated eyebrow upper portion 510 does not interfere with the threading of the lamp classified as an open appliance in the adapter 500 because the lower portion 506 of the lamp accommodates within the diameter of the elongated eyebrow. In contrast, with reference to Figure 5B, the lamp 504 classified as a closed appliance has a lower portion 508 that is wider than the lower portion 506 of the lamp 502 classified as an open appliance. The upper part 510 of the elongated eyebrow interferes with the threading of the lamp classified as an artifact closed in the adapter 500 because the lower portion 506 of the lamp contacts the elongated eyebrow before the threads 512 of the lamp classified as artifact. closed can fully tie with the adapter. Although the fundamental aspects of the invention applied to the preferred embodiment have been shown and described and pointed out, as currently contemplated for carrying them out, it will be understood that various omissions and substitutions and changes in the form and details of the described device can be made. illustrated and in operation by those skilled in the art, without departing from the spirit of the invention.

Claims (9)

1 . A lamp adapter comprising: an upper portion for receiving a medium-base lamp by means of threads; and an eyebrow extending from a first end of the upper portion at a sufficient length to prevent a lamp classified as a closed cofferdam from being completely screwed into the upper portion.

2. The lamp adapter of claim 1, wherein the eyebrow extends axially from the upper portion. The lamp adapter of claim 2, wherein the eyebrow did not prevent a medium base of a lamp classified as an open appliance from being rocked completely in the upper portion. The lamp adapter of claim 1, wherein the top portion includes a first open end coupled to a bottom portion having a second closed end and a hollow bore having a first section at the first open end and a second section in the second closed end comprising: a first conductive handle threaded in the hollow perforation; and a second threaded conductor handle on an external surface of the bottom portion. The lamp adapter of claim 4, wherein the upper portion and the bottom portion are made of an insulating material. 6. A lamp adapter comprising: a lamp adapter-it has an open end; an internal threaded handle mounted inside the lamp adapter to receive a lamp having a base of a first type; an external handle mounted outside the lamp adapter and having threads of a second type; and an eyebrow extending axially from the open end, where the eyebrow is of a length to prevent a lamp classified as a closed appliance, when installed in the lamp adapter, from being completely threaded into the threaded inner handle and to allow A lamp classified as an open appliance, when installed in the lamp adapter, is completely screwed into the internal threaded handle. The lamp adapter of claim 6, wherein the lamp adapter is made of an insulating material. The lamp adapter of claim 6, wherein the base of the lamp of the first type is a medium base and the base of the lamp of the second type is a Mugol base. 9. A lamp adapter for completing an electrical circuit with a class of lamps having an exerted handle threaded about a base member and a central metal button contact mounted on the base member, comprising: a lamp adapter of insulating material having a first open end and a second closed end and a bore having a first section at the first open end and a second section at the second open end; a metal handle in the second section; and internal threads in the metal handle to receive the threaded outer handle around the base member of an inserted lamp of the class of lamps wherein the class of lamps comprises a lamp classified as an open appliance having a medium base, wherein the The first section extends a length from the first section that allows the external threaded handle of only lamps classified as open appliances having a median base to be inserted through it and threaded into the metal handle in the second section . 1 0. A method for adapting a medium base lamp to a lamp holder of a Mughal base comprising: screwing a first metal handle provided on an external surface of a hollow lamp adapter to be tied with a lamp holder of a Mughal base , the hollow lamp adapter having a first open end for receiving a base of a lamp; Threading a second metal handle provided in the hollow lamp adapter; and extending an eyebrow from the first end at a sufficient length to allow a medium base of a lamp classified as an open appliance to be inserted through it and to be completely screwed into the second metal handle and to prevent the median base from A lamp classified as a closed appliance is inserted through it and fully threaded in the second handle. eleven . The method of claim 9, wherein the eyebrow extends axially from the first end. SUMMARY A lamp adapter can adapt a lamp base base lamp to accept a medium base lamp. The lamp adapter can only accommodate open sorted lamps. An open end of the lamp adapter in which the lamp is inserted has an elongated flange that allows only one open-ended fixture lamp, having a middle base, to be fully threaded into the adapter and to make electrical contact with a threaded metal sleeve and a central button contact of the lamp holder. The geometry of the elongated flange prevents the threading of a closed fitting lamp closed in the adapter coming from the physical differences between the open and closed sorted lamps.