BULB AND BULB HOLDER ADAPTER KIT

The present invention discloses a bulb and bulb holder adapter kit, comprising an LED bulb body provided with a bottom interface and a lateral interface, and an bulb holder assembly comprising at least one first adapter and at least one second adapter. Each of the first adapter and the second adapter comprises at one end a screw portion, a first contact and a second contact, and at the other end an insertion portion and terminals. The screw portion and the LED bulb body are connected by matched screw threads, and the insertion portion is provided with a square column and pins. Each of the first adapter and the second adapter comprises a housing sleeved on the screw portion, and the first adapter further comprises an intermediate housing between the screw portion and the housing thereof.

FIELD OF THE INVENTION

The invention relates to a set of lamp adapters, and in particular to a bulb and bulb holder adapter kit.

BACKGROUND

For modern LED lamps, bulb holders and bulbs are often integrally assembled during a production process for higher efficiency, assembly balance rate and product consistency, the resulting bulb holders of the LED lamps are generally irreplaceable. In this way, the application range of the LED lamps with fixed bulb holders is narrowed, because the bulbs of the LED lamps are designed to connect to only one dedicated type of sockets but there are many types of sockets in different countries and even there are many sockets with different specifications in the same country. In many cases the LED lamps can't be used due to the mismatching of the bulb holders and the sockets.

The bulb holders are fragile as they are usually squeezed. Likewise, the LED bulbs are also fragile parts, therefore it is necessary to consider problems regarding the replacement of the malfunctioned or damaged bulb holders and/or LED bulbs in use. However, for the LED lamps with the irreplaceable bulb holders, it's very difficult to disassemble the LED lamps to replace the malfunctioned or damaged parts once the LED lamps are produced or deployed, in the case where the LED lamps do not work. The LED lamps therefore must be replaced by new ones, causing greatly waste.

Therefore, a novel lamp assembly with advantages of easy disassembly, maintenance and replacement is needed.

SUMMARY OF THE INVENTION

Aiming at solving the technical problems mentioned above, the present invention provides a bulb and bulb holder adapter kit. In detail, the adapter kit comprises an LED bulb body comprising a bottom interface and a lateral interface. The adapter kit further comprises a bulb holder assembly, which comprises at least one first adapter and at least one second adapter, each of which is provided at one end thereof with a screw portion, a first contact configured to connect with the bottom interface and a second contact configured to connect with the lateral interface, and at the other end thereof with an insertion portion and terminals connected with the first contact and the second contact respectively. The screw portion and the LED bulb body are provided with screw threads matched therebetween. The insertion portion comprises a square column for fixing the first adapter or the second adapter onto a socket, and pins arranged on two opposing sides of the square column. Each of the first adapter and the second adapter comprises a housing sleeved on the screw portion, and the first adapter further comprises an intermediate housing arranged between the screw portion and the housing.

Preferably, the insertion portion further comprises a boss having a kidney or rounded rectangular cross section, for connecting the square column and the housing.

Preferably, the insertion portion comprises at least two terminals, each of which at one end thereof is connected to the first contact and the second contact respectively and at the other end thereof extents through in turn and protrudes from the housing and the boss.

Preferably, the boss has a kidney-shaped cross section and the terminals are arranged on two arc ends of the boss.

Preferably, the boss has a rounded rectangular cross section, and the insertion portion comprises four terminals arranged on four corners of the rectangle, or two terminals arranged on two opposing corners of either of diagonals of the rectangle.

Preferably, the square column is provided with one or two pins on each of two opposing sides thereof.

Preferably, the length of the square column of the first adapter is larger than it of the square column of the second adapter.

Preferably, the boss of the first adapter has a rounded square cross section, and the boss of the second adapter has a rounded rectangle cross section, wherein a long side of the rounded rectangle is equal to a side of the rounded square, and a short side of the rounded rectangle is less than the side of the rounded square.

Preferably, the intermediate housing is provided with a guide groove on an outer wall thereof, the housing of the first adapter is provided on an inner wall thereof with a bump slidable in the guide groove.

The present invention has the beneficial effects that: compared with the adapter of the prior art, a bulb and bulb holder adapter kit according to the invention comprises a bulb holder assembly adapted to sockets of different types to enable the same bulb to be used for the sockets of different types, resulting in a much wider application range; and the maintenance and replacement of the bulb and the bulb holder assembly can be conducted separately, thereby providing convenience and efficiency and lowering the cost of maintenance.

DETAILED DESCRIPTION

The following embodiments are given to illustrate the overall structure of a bulb and bulb holder adapter kit.

First Embodiment

As shown inFIGS. 1 to 13, a bulb and bulb holder adapter kit comprises an LED bulb body1and a bulb holder assembly, wherein the LED bulb body1is provided with a bottom interface11and a lateral interface12, and the bulb holder assembly comprises at least one first adapter2and at least one second adapter3. Each of the first adapter2and the second adapter3is provided at one end with a screw portion5, a first contact configured to connect to the bottom interface11and a second contact configured to connect to the lateral interface12, and at the other end with an insertion portion6and terminals61connected with the first contact and the second contact respectively. The screw portion5and the LED bulb body1are secured with each other by matching screw threads. The insertion portion6comprises a square column62for fixing the first adapter2or the second adapter3on sockets, and pins63arranged on two opposing sides of the square column62. Each of the first adapter2and the second adapter3further comprises a housing4sleeved on the screw portion5, and the first adapter2further comprises an intermediate housing25arranged between the screw portion5and the housing4. The housings4of the first adapter2and the second adapter3are cylindrical, and the cylindrical surface radius of the housing4of the first adapter2is greater than it of the housing4of the second adapter3for adaption to various recesses of different sockets. In this case the intermediate housing25is used as compensation for difference of the cylindrical surface radius.

The housing4is configured to enclose the internal structures of each of the first adapter2and the second adapter3for a protective purpose. The size of the housing4of the first adapter2is larger than it of the housing4of the second adapter3, and the size of the screw portion5of the first adapter2is the same as it of the screw portion5of the second adapter3, and thus the intermediate housing25is required in the first adapter2for adaption to the larger housings4of the first adapter2.

The insertion portion6further comprises a boss64configured to connect the square column62and the housing4, and the boss64may have a kidney-shaped or rounded rectangular cross section corresponding to a cross section of the recess receiving the boss64inserted in the socket. Recesses in sockets of different types mainly have a kidney-shaped or rounded rectangular cross section.

At least two terminals61are comprised. In the case of two terminals61, they are at one end connected to the first contact and the second contact respectively and at the other end extent through in turn and protrude from the housing4and the boss64. The number of the terminals61is equivalent to the number of holes in the socket, into which the terminals61are inserted, and particularly two or four holes are provided in the socket. Regarding the first adapter2, the terminals61are arranged on two arc ends of the boss64in the case where two terminals61are comprised and the boss64has a kidney-shaped cross section; regarding the second adapter3, the terminals61are arranged on two opposing corners of either of the two diagonals of a rectangle in the case where two terminals61are comprised and the boss64has a rounded rectangular cross section; in the case where each of the first adapter2and the second adapter3comprises four terminals61and the bosses64have a rounded rectangular cross section, the four terminals61are arranged on four corners of another rectangle on each of the bosses64, respectively.

The insertion portion6is provided with one or more pins63on two opposing sides of the square column62, for buckling the square column62into the socket, thereby fixing the bulb to the bulb holder assembly.

The length of the square column62of the first adapter2is larger than it of the square column62of the second adapters3, for adaption to recesses of different depths.

In the case where the boss64of the first adapter2has a rounded square cross section and the boss64of the second adapter3has a rounded rectangular cross section, the length of a long side of the rounded rectangle is equal to it of a side of the rounded square, and the length of a short side of the rounded rectangle is less than it of the side of the rounded square.

The intermediate housing25is provided with a guide groove251on an outside wall thereof, and the housing4of the first adapter2is provided with a bump41on an inside wall thereof, which is capable of sliding in the guide groove251. By means of the guide groove251in cooperation with the bump41, the intermediate housing25can be connected to the housing4in a fixed position, thereby providing convenience for assembling and disassembling.

The following embodiment is given to illustrate the bulb holder assembly in the first embodiment.

Second Embodiment

As shown inFIGS. 1 to 11, the bulb holder assembly comprises four first adapters2and two second adapters3, wherein a first first adapter2comprises four terminals61and two pins63and has a rounded square cross section; a second first adapter2comprises two terminals61and two pins63and has a rounded square cross section; a third first adapter2comprises two terminals61and two pins63and has a kidney-shaped cross section; and a fourth first adapters2comprises two terminals61and four pins63and has a kidney-shaped cross section. A first second adapter3comprises four terminals61and two pins63and has a rounded rectangular cross section; and a second second adapter3comprises two terminals61and two pins63and has a rounded rectangular cross section.

The first adapters2of the bulb holder assembly, in combination with the second adapters3, can convert a threaded connection between the LED bulb body1and the socket into a connection by the pins63and the terminals61, allowing the adapter kit in this embodiment to be adaptive to the sockets of many types with a type G interface which are common today in many countries, in the case of using only the same one LED bulb body1. Resulting from above, the LED bulb body1can be used more widely, and disassembly, replacement and maintenance of lamp parts can be more convenient.

The following embodiment is given to illustrate the first contact and the second contact in the first embodiment.

Third Embodiment

As shown inFIGS. 2 to 7, the first contact of the first adapter2is a first metal shrapnel21fixed on the intermediate housing25and having an elastic portion corresponding to the bottom interface11of the LED bulb body1. The second contact of the first adapter2is the conductive screw portion5fixed on the intermediate housing25, wherein the screw portion5has a space in a position corresponding to the bottom interface11of the LED bulb body1, for receiving the first metal shrapnel21. The first adapter2is provided with a baffle22arranged between the screw portion5and the first metal shrapnel21. The screw portion5is fixed on the intermediate housing25by matching screws and screw caps. Specifically, the intermediate housing25is provided with fixing bases23matched in shape with the screw caps on a back side thereof for receiving and securing the screw caps, and the housing4is provided with threaded holes24on an inner wall thereof, such that the screw portion5and the intermediate housing25are fixed with each other by the screws cooperating with the threaded holes24. A connecting sheet32are riveted with the terminals61by rivets through the housing4, in this case the rivets and the terminals61are connected with each other with an interference fit.

The baffle22is configured to insulate the first metal shrapnel21from the screw portion5for preventing short circuit. The fixing bases23, the screws, the screw caps and the threaded holes24are configured to cooperate with each other to secure the screw portion5, the intermediate housing25and the housing4altogether, and moreover to remain a space between the intermediate housing25and the housing4for heat dissipation and wiring.

Fourth Embodiment

As shown inFIGS. 8 to 11, the first contact of the second adapter3is a second metal shrapnel31fixed on an inner wall of the housing4and having an elastic portion corresponding to the bottom interface11of the LED bulb body1. The second contact of the second adapter3is the conductive screw portion5fixed inside the housing4and connected with the housing4by the connecting sheet32. The connecting sheet32and the second metal shrapnel31are both fixed on an inner wall of the housing4by rivets. Specifically, the rivets extents through the connecting sheets32and the housing4, and are riveted with the terminals61arranged outside the housing4, in this case the rivets and the terminals61are connected with an interference fit. The connecting sheet32is provided with blocking sheets33at lateral sides thereof, for preventing the connecting sheet32from lateral displacement. The housing4is further provided with a top column34arranged on an inner wall thereof and under the second metal shrapnel31, for jacking-up the second metal shrapnel31. The screw portion5is fixed by the screws tightened in the threaded holes24provided in the housing4.

The terminals61, the second metal shrapnel31and the connecting sheet32can all be fixed on the housing4by the rivets in cooperation with the terminals61, while the connecting sheets32in cooperation with the top columns34can provide space for heat dissipation and wiring between the screw portion5and the housing4.

The following embodiment is given to illustrate the LED bulb body1in the first embodiment.

Fifth Embodiment

As shown inFIGS. 12 and 13, the LED bulb body1comprises a threaded bulb cap comprising the bottom interface11configured to connect with the first contact and the lateral interface12configured to connect with the second contact. The LED bulb body1further comprises three U-shaped bulb tubes13arranged circumferentially, each of which is provided with a bulb board14in each of two straight tube portions thereof. The bulb board14is provided with a plurality of LED chips15on a side thereof facing outwards, and a reflective coating layer on the side facing outwards. The LED bulb body1in the embodiment has uniform luminance and strong light intensity, can be used in the case of one simple U-shaped bulb tube13malfunctioning, makes the best use of the space inside the U-shaped bulb tube13, and can provide space sufficient for heat dissipation.

Sixth Embodiment

The LED bulb body1comprises a threaded bulb cap comprising the bottom interface11configured to connect with the first contact and the lateral interface12configured to connect with the second contact. The LED bulb body1further comprises three U-shaped bulb tubes13arranged circumferentially, each of which comprises a U-shaped wick matched in shape with the bulb tube. The U-shaped wick is provided with a plurality of LED chips15and enclosed by a plastic nonopaque sheath. Further, the plastic nonopaque sheath is coated with a light-strengthening powder layer, which can be a diamond shining powder layer with multi-reflecting surfaces, or a glass powder layer with multi-reflecting surfaces. The plastic nonopaque sheath in the embodiment enables the U-shaped wicks to have a U shape, and the use of the diamond shining powder layer or the glass powder layer allows the LED bulb body1to have a more uniform illumination, and substantially 360° reflecting surfaces.

The above embodiments are for purposes of illustration and description to the technical solutions of the present invention merely, but are not intended to limit the present invention. Any modification or equivalent replacement without departing from the spirit and scope of the present invention shall all fall within the scope of the technical solutions of the present invention.