US20230213152A1 - Highly waterproof and highly insulative simple plastic lamp bulb without conventional lamp cap - Google Patents
Highly waterproof and highly insulative simple plastic lamp bulb without conventional lamp cap Download PDFInfo
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- US20230213152A1 US20230213152A1 US17/654,289 US202217654289A US2023213152A1 US 20230213152 A1 US20230213152 A1 US 20230213152A1 US 202217654289 A US202217654289 A US 202217654289A US 2023213152 A1 US2023213152 A1 US 2023213152A1
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- lamp
- conductive
- waterproof insulation
- insertion portion
- insulation plastic
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- 238000009413 insulation Methods 0.000 claims abstract description 73
- 238000003780 insertion Methods 0.000 claims abstract description 37
- 230000037431 insertion Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 25
- 238000001746 injection moulding Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 239000010949 copper Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 230000006378 damage Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000258971 Brachiopoda Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/235—Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/747—Lightning equipment
- B29L2031/7472—Lampshades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to the field of LED illumination technologies, and in particular to a highly waterproof, highly insulative, and simple plastic lamp bulb without a conventional lamp cap.
- An LED lamp bulb is usually formed by assembling a lamp cap made of copper or another metal, a lampshade, and an LED lamp core. The manufacture of the LED lamp bulb is completed through multiple working procedures.
- a glass core column same as in an incandescent lamp is fabricated firstly, and a lamp filament is welded onto the glass core column through the semi-mechanical and semi-manual procedure so as to form an LED lamp core.
- the LED lamp core and bulb shell are conveyed into a sealing exhaust machine and then an inert gas is injected and then an exhaust tube is cut off, so as to form an unfinished LED lamp bulb.
- a rear end of the unfinished lamp bulb is manually and fixedly mounted on the copper lamp cap to form a finished LED lamp bulb.
- the existing LED plastic lamp bulb is manually or semi-automatically assembled with multiple components, leading to high costs. Further, at present, the products of this industry are not waterproof, easily bringing potential safety hazards. This is a problem that has not been solved in this industry for long.
- a traditional bulb is connected by a filament and a stem to form a wick, and then a lamp shell and the wick are sealed to form a semi-finished bulb.
- the semi-finished bulb has two electrical wires, respectively being positive and negative. To make a light bulb from this semi-finished bulb, one needs to manufacture a copper lamp holder.
- the process of manufacturing the copper lamp holder is very complicated. First, a metal copper plate is punched into a spiral kit, and then a black glass or plastic injection solution is melted at high temperature and stamped at the bottom of the lamp holder, and connected with a metal positive top plate to form a positive and negative electrode insulator. After pickling and electroplating, a lamp holder is finally formed.
- the above procedure of manufacturing the LED lamp bulb has the following problems: limited by the multi-component structure of a conventional lamp bulb, in the glass core column and sealing procedures of the above manufacturing procedures, it is required to use a high-temperature flame to achieve sintering and formation. In this case, pollution may be brought to the production environment and the workers will suffer from health harm after working in the environment for long.
- pollution may be brought to the production environment and the workers will suffer from health harm after working in the environment for long.
- a conventional plastic shell structure there are many lamp components that are made manually, leading to tedious working procedures. Thus, tedious working procedures will be required, the costs will be greatly increased, and the product quality will become unstable.
- a smaller copper lamp cap means the higher difficulty of automatic production.
- the present invention provides a highly waterproof, highly insulative, and simple plastic lamp bulb, which features strong waterproofness, a simple structure, long service life, and no damage.
- An LED lamp core column may be made of glass or plastic, leading to low cost, simple processing procedure, ease of processing, the difficulty of damage, high insulation, low failure rate, large production, high waterproofness, no need for conventional lamp cap, use of less material, low production cost and low labor cost.
- the lamp bulb includes a lampshade, a waterproof insulation plastic lamp cap, a conductive connection piece, and a lamp core body.
- An insertion portion is provided at the bottom of the lampshade, and the lamp core body is inserted into the insertion portion.
- the conductive connection piece is in electrical connection with the lamp core body, and the conductive connection piece is disposed on the insertion portion and then integrally injection-molded into the waterproof insulation plastic lamp cap in a sealed manner by an injection molding machine.
- a conductive connection head is disposed on the top of the waterproof insulation plastic lamp cap, and the conductive connection piece protrudes out of the waterproof insulation plastic lamp cap.
- the conductive connection piece includes an electrically conductive sleeve, a conductive head.
- the electrically conductive sleeve and the conductive head are in electrical connection with the lamp core body respectively.
- the electrically conductive sleeve is sleeved on the insertion portion, and the electrically conductive sleeve protrudes out of an outer sidewall of the waterproof insulation plastic lamp cap.
- the conductive head protrudes out of the top of the waterproof insulation plastic lamp cap.
- the lamp core body includes a lamp core column, a first conductive wire, a second conductive wire, and at least one LED lamp filament.
- the lamp core column is inserted into the insertion portion, the LED lamp filament is fixedly mounted on the lamp core column.
- One end of the first conductive wire is in electrical connection with the LED lamp filament, and the other end of the first conductive wire is in electrical connection with the electrically conductive sleeve.
- One end of the second conductive wire is in electrical connection with the LED lamp filament, and the other end of the second conductive wire is in electrical connection with the conductive head.
- a thread is integrally formed on the outer sidewall of the waterproof insulation plastic lamp cap, and the electrically conductive sleeve includes a lock-in part with an opening, the lock-in part is sleeved on the bottom of the insertion portion. Two end portions of the lock-in part vertically extend upward to form a wave-like conductive column matched with the thread respectively, the conductive column protrudes out of an outer sidewall of the thread, and the first conductive wire is in electrical connection with the conductive column.
- the outer sidewall of the waterproof insulation plastic lamp cap has a smooth surface
- the electrically conductive sleeve includes a cylindrical conductive spring. Upper and lower ends of the conductive spring extend toward an axis respectively to form a fixing column. A mounting hole is opened at the bottom of the insertion portion, and a mounting groove is opened on the top of the lamp core column or the top of the insertion portion. The two fixing columns are respectively inserted into the mounting hole and the mounting groove.
- the first conductive wire is in electrical connection with either fixing column, and the conductive spring protrudes out of the outer sidewall of the waterproof insulation plastic lamp cap.
- the electrically conductive sleeve and the conductive head are both made of a metallic conductive material
- the waterproof insulation plastic lamp cap is made of an insulation plastic material
- a drive element for driving the LED lamp filament is disposed on the first conductive wire or the second conductive wire, and the drive element is located inside or around the lamp core column.
- the lamp core column is made of a glass material or a plastic material.
- the present invention may, after adopting the above structure, have the following advantages: the structure of the lamp bulb of the present invention is ingenious and suitable for mechanical automatic production and especially for automatic production of the lamp bulbs with waterproof insulation plastic lamp cap of various sizes. In this case, the production process will be simplified, and the production costs will be reduced greatly, thus effectively improving the daily production volume of the lamp bulbs. In the manner of inserting the lamp core into the lampshade, the cost pressure resulting from screwing-down assembly and manual assembly of the conventional multi-component lamp bulb can be reduced. By integral injection molding, the waterproof insulation plastic lamp cap is integrally formed on the insertion portion of the lampshade.
- the unfinished lamp bulb can be fused into a lamp cap through a plastic fusion body.
- the waterproof insulation plastic lamp cap can be connected to a lamp bulb mounting base without needing a conventional metallic lamp cap, insulation sheet, and soldering, thus reducing the costs of multiple components. In other words, due to no need for a conventional metallic lamp cap and top sheet, the costs resulting from multiple components are reduced.
- the waterproof insulation plastic lamp cap is directly and integrally injection-molded on the lampshade, achieving seamless connection, high airtightness, increasing sealing insulation performance and waterproof performance of the lamp bulb, prolonging the service life of the lamp bulb, and further producing a beautiful and elegant appearance.
- FIG. 1 is a structural schematic diagram illustrating a lock-in part adopted by an electrically conductive sleeve according to the present invention.
- FIG. 2 is an exploded view illustrating a lock-in part adopted by an electrically conductive sleeve according to the present invention.
- FIG. 3 is a structural schematic diagram illustrating a lock-in part adopted by an electrically conductive sleeve before being injection molded with a waterproof insulation plastic lamp cap.
- FIG. 4 is a structural schematic diagram illustrating a conductive spring adopted by an electrically conductive sleeve according to the present invention.
- FIG. 5 is an exploded view illustrating a conductive spring adopted by an electrically conductive sleeve according to the present invention.
- FIG. 6 is a structural schematic diagram illustrating a conductive spring adopted by an electrically conductive sleeve before being injection molded with a waterproof insulation plastic lamp cap according to the present invention.
- FIG. 7 is a structural schematic diagram illustrating a lamp core body according to the present invention.
- FIG. 8 is a structural schematic diagram illustrating a lock-in part according to the present invention.
- FIG. 9 is a structural schematic diagram illustrating a conductive spring according to the present invention.
- FIG. 10 is a structural schematic diagram of a waterproof insulation plastic lamp cap injection-molded with a lock-in part adopted by an electrically conductive sleeve according to the present invention.
- FIG. 11 is a structural schematic diagram of a waterproof insulation plastic lamp cap injection-molded with a conductive spring adopted by an electrically conductive sleeve according to the present invention.
- the lamp bulb includes a lampshade 1 , a waterproof insulation plastic lamp cap 2 , a conductive connection piece, and a lamp core body 4 .
- An insertion portion 11 is provided at the bottom of lampshade 1 , and the lamp core body 4 is inserted into insertion portion 11 .
- the conductive connection piece is in electrical connection with the lamp core body 4 , and the conductive connection piece is sleeved on the insertion portion 11 and the waterproof insulation plastic lamp cap 2 is injection-molded on the insertion portion 11 .
- a conductive connection head is disposed on the top of the waterproof insulation plastic lamp cap 2 , and the conductive connection piece protrudes out of the waterproof insulation plastic lamp cap 2 .
- the lamp core body 4 is inserted into the lampshade 1 , the waterproof insulation plastic lamp cap 2 seals the lamp core body 4 in the lampshade 1 , and then the waterproof insulation plastic lamp cap 2 and the lampshade 1 are integrally formed by injection molding to increase a connection strength between the waterproof insulation plastic lamp cap 2 and the lampshade 1 .
- the exposed conductive connection piece is in electrical connection with an external power source, without needing to dispose an insulation apparatus around a positive pole contact at the bottom of the copper lamp cap to isolate the positive pole from a negative pole, which is what needs to be done for a traditional copper lamp holder, facilitating mechanized automatic production and especially the automatic production of the lamp bulbs with waterproof insulation plastic lamp cap of various sizes.
- the production process will be simplified, and the production costs will be reduced greatly, thus effectively improving the daily production volume of the lamp bulbs. Further, the cost pressure resulting from the manual assembly of the conventional multi-component lamp bulb can be reduced. Due to no need for a conventional copper lamp cap, the costs of multiple components are reduced. Furthermore, the waterproof insulation plastic lamp cap 2 is directly and integrally injection-molded on the lampshade 1 , achieving seamless connection, high airtightness, increasing sealing insulation performance, and waterproof performance of the lamp bulb, and prolonging the service life of the lamp bulb.
- the waterproof insulation plastic lamp cap 2 may be conveyed into a mold manually or mechanically to achieve integral injection molding.
- the conductive connection piece includes an electrically conductive sleeve 31 , a conductive head 32 .
- the electrically conductive sleeve 31 and the conductive head 32 are in electrical connection with the lamp core body 4 respectively.
- the electrically conductive sleeve 31 is sleeved on the insertion portion 11 , the electrically conductive sleeve 31 protrudes out of an outer sidewall of the waterproof insulation plastic lamp cap 2 , and the conductive head 32 protrudes out of the top of the waterproof insulation plastic lamp cap 2 .
- the electrically conductive sleeve 31 and the conductive head 32 serve as a positive pole contact and a negative pole contact respectively.
- the electrically conductive sleeve 31 and the conductive head 32 are exposed outside the waterproof insulation plastic lamp cap 2 , and then mounted on a conventional lamp holder with a thread or fitting buckle.
- the electrically conductive sleeve 31 and the conductive head 32 are electrically connected to a power supply line, eliminating the need for a conventional copper lamp cap and an insulation sheet disposed at the bottom of the copper lamp cap to isolate a positive pole and a negative pole.
- safety will be increased, the costs resulting from multiple components are reduced, and production flow is simplified, thus increasing the production volume.
- an outer side surface of the insertion portion 11 is provided with at least one sealing step.
- the sealing step increases a contact area with the waterproof insulation plastic lamp cap 2 , thus blocking water entry, increasing sealing performance, and improving waterproofness.
- the sealing step may also enable the waterproof insulation plastic lamp cap 2 to be connected with the lampshade in a buckling manner, thus further increasing a connection strength and a sealing performance.
- the lamp core body 4 includes a lamp core column 41 , a first conductive wire 43 , a second conductive wire 44 , and at least one LED lamp filament 45 .
- the lamp core column 41 is inserted into the insertion portion 11 , and the LED lamp filament 45 is fixedly mounted on the lamp core column 41 .
- One end of the first conductive wire 43 is in electrical connection with the LED lamp filament 45
- the other end of the first conductive wire 43 is in electrical connection with the electrically conductive sleeve 31 .
- One end of the second conductive wire 44 is in electrical connection with the LED lamp filament 45
- the other end of the second conductive wire 44 is in electrical connection with the conductive head 32 .
- the LED lamp filament 45 is series-connected between the first conductive wire 43 and the second conductive wire 44 .
- the electrically conductive sleeve 31 and the conductive head 32 are connected with positive and negative currents respectively to form a circuit, such that the LED lamp filament 45 emits light.
- the LED lamp filament 45 features high lumen, low heat generation, no light attenuation, and long service life and the like, increasing the stability of the lamp bulb and prolonging it service life.
- 2-4 LED lamp filaments 45 may be series-connected to increase its lumen.
- a thread 21 is integrally formed on the outer sidewall of the waterproof insulation plastic lamp cap 2
- the electrically conductive sleeve 31 includes a lock-in part 33 with an opening.
- the lock-in part 33 is sleeved on the bottom of the insertion portion 11 .
- Two end portions of the lock-in part 33 vertically extend upward to form a wave-like conductive column 34 matched with thread 21 respectively.
- the conductive column 34 protrudes out of an outer sidewall of the thread 21 , and the first conductive wire 43 is in electrical connection with either conductive column 34 .
- the lock-in part 33 is fitted on the bottom of the insertion portion 11 .
- the conductive column 34 protrudes out of the waterproof insulation plastic lamp cap 2 and is shaped like a wave along the contour of the thread 21 .
- the waterproof insulation plastic lamp cap 2 is thread-connected to a conventional lamp holder through thread 21 and the conductive column 34 is in electrical connection with a power supply contact on the lamp holder.
- the outer sidewall of the waterproof insulation plastic lamp cap 2 has a smooth surface
- the electrically conductive sleeve 31 includes a cylindrical conductive spring 35 .
- the upper and lower ends of the conductive spring 35 extend toward an axis respectively to form a fixing column 36 .
- a mounting hole 12 is opened at the bottom of the insertion portion 11
- a mounting groove 42 is opened on the top of the lamp core column 41 or the top of the insertion portion 11 .
- the two fixing columns 36 are respectively inserted into the mounting hole 12 and the mounting groove 42 .
- the first conductive wire 43 is in electrical connection with either fixing column 36 , and the conductive spring 35 protrudes out of the outer sidewall of the waterproof insulation plastic lamp cap 2 .
- the electrically conductive sleeve 31 may adopt a cylindrical conductive spring 35 .
- the conductive spring 35 is exposed.
- the conductive spring 35 can serve as a thread 21 to connect with the conventional lamp holder as well as supply power from the conventional lamp holder, thus achieving a higher degree of integration.
- the electrically conductive sleeve 31 and the conductive head 32 are both made of a metallic conductive material, and the waterproof insulation plastic lamp cap 2 is made of an insulation plastic material.
- a drive element 46 for driving the LED lamp filament 45 is disposed on the first conductive wire 43 or the second conductive wire 44 , and the drive element 46 is located inside or around the lamp core column 41 .
- An exhaust tube extending externally is provided inside the lamp core column 41 .
- the drive element 46 is disposed in a space in the lamp core column 41 for the purpose of protection, and the exhaust tube is used to perform vacuumization. After vacuumization is completed, the exhaust tube should be sealed up to maintain a vacuum state. Thus, the position of fusion of the exhaust tube can be kept airtight, increasing the product quality, and reducing the failure rate.
- the lamp core column 41 is made of a glass material or a plastic material.
- the first conductive wire 43 , the second conductive wire 44 , and the lamp core column 41 can be integrally connected by performing high-temperature sintering on the top of the lamp core column 41 . In this way, during an automatic or manual production, the position of the lamp core body 4 can be fixed, thus increasing the qualification rate of the products.
- the core column 41 is made of plastic material, the core column 41 is integrally formed, and the end of the core column 41 is provided with a fixing groove, and the first conductive wire 43 and the second conductive wire 44 are electrically connected by a metal conductive wire.
- the metal conductive wire is fixed in the fixing groove so that the first conductive wire 43 , the second conductive wire 44 , and the lamp core column 41 are linked together.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Power Engineering (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
- This application claims priority from China Patent Application No. 202210014214.9 filed on Jan. 6, 2022, the entire content of which is hereby incorporated by reference.
- The present invention relates to the field of LED illumination technologies, and in particular to a highly waterproof, highly insulative, and simple plastic lamp bulb without a conventional lamp cap.
- An LED lamp bulb is usually formed by assembling a lamp cap made of copper or another metal, a lampshade, and an LED lamp core. The manufacture of the LED lamp bulb is completed through multiple working procedures. In the prior art, for an LED filament bulb, a glass core column same as in an incandescent lamp is fabricated firstly, and a lamp filament is welded onto the glass core column through the semi-mechanical and semi-manual procedure so as to form an LED lamp core. Further, through a semi-mechanical and semi-manual procedure, the LED lamp core and bulb shell are conveyed into a sealing exhaust machine and then an inert gas is injected and then an exhaust tube is cut off, so as to form an unfinished LED lamp bulb. Next, a rear end of the unfinished lamp bulb is manually and fixedly mounted on the copper lamp cap to form a finished LED lamp bulb. The existing LED plastic lamp bulb is manually or semi-automatically assembled with multiple components, leading to high costs. Further, at present, the products of this industry are not waterproof, easily bringing potential safety hazards. This is a problem that has not been solved in this industry for long.
- A traditional bulb is connected by a filament and a stem to form a wick, and then a lamp shell and the wick are sealed to form a semi-finished bulb. The semi-finished bulb has two electrical wires, respectively being positive and negative. To make a light bulb from this semi-finished bulb, one needs to manufacture a copper lamp holder.
- The process of manufacturing the copper lamp holder is very complicated. First, a metal copper plate is punched into a spiral kit, and then a black glass or plastic injection solution is melted at high temperature and stamped at the bottom of the lamp holder, and connected with a metal positive top plate to form a positive and negative electrode insulator. After pickling and electroplating, a lamp holder is finally formed.
- When the semi-finished bulb needs to connect with a lamp holder, a multi-step process is required: 1. the fixed adhesive connecting the semi-finished bulb and the lamp head is stamped in the lamp head and fixedly connected by high-temperature sintering; 2. top soldering positive power supply; 3. negative power supply wire is soldered and connected; and 4. conductivity test.
- The above procedure of manufacturing the LED lamp bulb has the following problems: limited by the multi-component structure of a conventional lamp bulb, in the glass core column and sealing procedures of the above manufacturing procedures, it is required to use a high-temperature flame to achieve sintering and formation. In this case, pollution may be brought to the production environment and the workers will suffer from health harm after working in the environment for long. In a conventional plastic shell structure, there are many lamp components that are made manually, leading to tedious working procedures. Thus, tedious working procedures will be required, the costs will be greatly increased, and the product quality will become unstable. A smaller copper lamp cap means the higher difficulty of automatic production. Due to the non-waterproof property of the lamp bulb, water mist will be generated inside the lampshade, electric conduction will possibly occur, therefore increasing current and damaging electronic components. Therefore, electronic components and devices may be burned out and even electric leakage may occur, resulting in safety accidents. As a result, it is necessary to make a large improvement.
- In order to solve the shortcomings of the prior art, the present invention provides a highly waterproof, highly insulative, and simple plastic lamp bulb, which features strong waterproofness, a simple structure, long service life, and no damage. An LED lamp core column may be made of glass or plastic, leading to low cost, simple processing procedure, ease of processing, the difficulty of damage, high insulation, low failure rate, large production, high waterproofness, no need for conventional lamp cap, use of less material, low production cost and low labor cost.
- In order to achieve the above purpose, a technical solution of the present invention provides a highly waterproof and highly insulative simple plastic lamp bulb without a conventional lamp cap. The lamp bulb includes a lampshade, a waterproof insulation plastic lamp cap, a conductive connection piece, and a lamp core body. An insertion portion is provided at the bottom of the lampshade, and the lamp core body is inserted into the insertion portion. The conductive connection piece is in electrical connection with the lamp core body, and the conductive connection piece is disposed on the insertion portion and then integrally injection-molded into the waterproof insulation plastic lamp cap in a sealed manner by an injection molding machine. A conductive connection head is disposed on the top of the waterproof insulation plastic lamp cap, and the conductive connection piece protrudes out of the waterproof insulation plastic lamp cap.
- In a further technical solution, the conductive connection piece includes an electrically conductive sleeve, a conductive head. The electrically conductive sleeve and the conductive head are in electrical connection with the lamp core body respectively. The electrically conductive sleeve is sleeved on the insertion portion, and the electrically conductive sleeve protrudes out of an outer sidewall of the waterproof insulation plastic lamp cap. The conductive head protrudes out of the top of the waterproof insulation plastic lamp cap.
- In a further technical solution, the lamp core body includes a lamp core column, a first conductive wire, a second conductive wire, and at least one LED lamp filament. The lamp core column is inserted into the insertion portion, the LED lamp filament is fixedly mounted on the lamp core column. One end of the first conductive wire is in electrical connection with the LED lamp filament, and the other end of the first conductive wire is in electrical connection with the electrically conductive sleeve. One end of the second conductive wire is in electrical connection with the LED lamp filament, and the other end of the second conductive wire is in electrical connection with the conductive head.
- In a further technical solution, a thread is integrally formed on the outer sidewall of the waterproof insulation plastic lamp cap, and the electrically conductive sleeve includes a lock-in part with an opening, the lock-in part is sleeved on the bottom of the insertion portion. Two end portions of the lock-in part vertically extend upward to form a wave-like conductive column matched with the thread respectively, the conductive column protrudes out of an outer sidewall of the thread, and the first conductive wire is in electrical connection with the conductive column.
- In a further technical solution, the outer sidewall of the waterproof insulation plastic lamp cap has a smooth surface, and the electrically conductive sleeve includes a cylindrical conductive spring. Upper and lower ends of the conductive spring extend toward an axis respectively to form a fixing column. A mounting hole is opened at the bottom of the insertion portion, and a mounting groove is opened on the top of the lamp core column or the top of the insertion portion. The two fixing columns are respectively inserted into the mounting hole and the mounting groove. The first conductive wire is in electrical connection with either fixing column, and the conductive spring protrudes out of the outer sidewall of the waterproof insulation plastic lamp cap.
- In a further technical solution, the electrically conductive sleeve and the conductive head are both made of a metallic conductive material, and the waterproof insulation plastic lamp cap is made of an insulation plastic material.
- In a further technical solution, a drive element for driving the LED lamp filament is disposed on the first conductive wire or the second conductive wire, and the drive element is located inside or around the lamp core column.
- In a further technical solution, the lamp core column is made of a glass material or a plastic material.
- Compared with the prior art, the present invention may, after adopting the above structure, have the following advantages: the structure of the lamp bulb of the present invention is ingenious and suitable for mechanical automatic production and especially for automatic production of the lamp bulbs with waterproof insulation plastic lamp cap of various sizes. In this case, the production process will be simplified, and the production costs will be reduced greatly, thus effectively improving the daily production volume of the lamp bulbs. In the manner of inserting the lamp core into the lampshade, the cost pressure resulting from screwing-down assembly and manual assembly of the conventional multi-component lamp bulb can be reduced. By integral injection molding, the waterproof insulation plastic lamp cap is integrally formed on the insertion portion of the lampshade. Due to the high degree of injection molding, the unfinished lamp bulb can be fused into a lamp cap through a plastic fusion body. The waterproof insulation plastic lamp cap can be connected to a lamp bulb mounting base without needing a conventional metallic lamp cap, insulation sheet, and soldering, thus reducing the costs of multiple components. In other words, due to no need for a conventional metallic lamp cap and top sheet, the costs resulting from multiple components are reduced. Furthermore, the waterproof insulation plastic lamp cap is directly and integrally injection-molded on the lampshade, achieving seamless connection, high airtightness, increasing sealing insulation performance and waterproof performance of the lamp bulb, prolonging the service life of the lamp bulb, and further producing a beautiful and elegant appearance.
- The present invention will be further described below in combination with accompanying drawings and specific embodiments.
-
FIG. 1 is a structural schematic diagram illustrating a lock-in part adopted by an electrically conductive sleeve according to the present invention. -
FIG. 2 is an exploded view illustrating a lock-in part adopted by an electrically conductive sleeve according to the present invention. -
FIG. 3 is a structural schematic diagram illustrating a lock-in part adopted by an electrically conductive sleeve before being injection molded with a waterproof insulation plastic lamp cap. -
FIG. 4 is a structural schematic diagram illustrating a conductive spring adopted by an electrically conductive sleeve according to the present invention. -
FIG. 5 is an exploded view illustrating a conductive spring adopted by an electrically conductive sleeve according to the present invention. -
FIG. 6 is a structural schematic diagram illustrating a conductive spring adopted by an electrically conductive sleeve before being injection molded with a waterproof insulation plastic lamp cap according to the present invention. -
FIG. 7 is a structural schematic diagram illustrating a lamp core body according to the present invention. -
FIG. 8 is a structural schematic diagram illustrating a lock-in part according to the present invention. -
FIG. 9 is a structural schematic diagram illustrating a conductive spring according to the present invention. -
FIG. 10 is a structural schematic diagram of a waterproof insulation plastic lamp cap injection-molded with a lock-in part adopted by an electrically conductive sleeve according to the present invention. -
FIG. 11 is a structural schematic diagram of a waterproof insulation plastic lamp cap injection-molded with a conductive spring adopted by an electrically conductive sleeve according to the present invention. - 1 lamp shade, 11 insertion portion, 12 mounting hole,
- 2 waterproof insulation plastic lamp cap, 21 thread,
- 31 electrically conductive sleeve, 32 conductive head, 33 lock-in part, 34 conductive column,
- 35 conductive spring, 36 fixing column,
- 4 lamp core body, 41 lamp core column, 42 mounting groove, 43 first conducive wire, 44 second conductive wire, 45 LED lamp filament, 46 drive element.
- The subsequent descriptions are made merely to preferred embodiments of the present invention and not meant to limit the scope of protection f the present invention.
- There is provided a highly waterproof and highly insulative simple plastic lamp bulb without a conventional lamp cap. As shown in
FIGS. 1-11 , the lamp bulb includes alampshade 1, a waterproof insulationplastic lamp cap 2, a conductive connection piece, and a lamp core body 4. Aninsertion portion 11 is provided at the bottom oflampshade 1, and the lamp core body 4 is inserted intoinsertion portion 11. The conductive connection piece is in electrical connection with the lamp core body 4, and the conductive connection piece is sleeved on theinsertion portion 11 and the waterproof insulationplastic lamp cap 2 is injection-molded on theinsertion portion 11. A conductive connection head is disposed on the top of the waterproof insulationplastic lamp cap 2, and the conductive connection piece protrudes out of the waterproof insulationplastic lamp cap 2. - The lamp core body 4 is inserted into the
lampshade 1, the waterproof insulationplastic lamp cap 2 seals the lamp core body 4 in thelampshade 1, and then the waterproof insulationplastic lamp cap 2 and thelampshade 1 are integrally formed by injection molding to increase a connection strength between the waterproof insulationplastic lamp cap 2 and thelampshade 1. The exposed conductive connection piece is in electrical connection with an external power source, without needing to dispose an insulation apparatus around a positive pole contact at the bottom of the copper lamp cap to isolate the positive pole from a negative pole, which is what needs to be done for a traditional copper lamp holder, facilitating mechanized automatic production and especially the automatic production of the lamp bulbs with waterproof insulation plastic lamp cap of various sizes. In this case, the production process will be simplified, and the production costs will be reduced greatly, thus effectively improving the daily production volume of the lamp bulbs. Further, the cost pressure resulting from the manual assembly of the conventional multi-component lamp bulb can be reduced. Due to no need for a conventional copper lamp cap, the costs of multiple components are reduced. Furthermore, the waterproof insulationplastic lamp cap 2 is directly and integrally injection-molded on thelampshade 1, achieving seamless connection, high airtightness, increasing sealing insulation performance, and waterproof performance of the lamp bulb, and prolonging the service life of the lamp bulb. - The waterproof insulation
plastic lamp cap 2 may be conveyed into a mold manually or mechanically to achieve integral injection molding. - Specifically, the conductive connection piece includes an electrically
conductive sleeve 31, aconductive head 32. The electricallyconductive sleeve 31 and theconductive head 32 are in electrical connection with the lamp core body 4 respectively. The electricallyconductive sleeve 31 is sleeved on theinsertion portion 11, the electricallyconductive sleeve 31 protrudes out of an outer sidewall of the waterproof insulationplastic lamp cap 2, and theconductive head 32 protrudes out of the top of the waterproof insulationplastic lamp cap 2. - The electrically
conductive sleeve 31 and theconductive head 32 serve as a positive pole contact and a negative pole contact respectively. When the waterproof insulationplastic lamp cap 2 is injection-molded, the electricallyconductive sleeve 31 and theconductive head 32 are exposed outside the waterproof insulationplastic lamp cap 2, and then mounted on a conventional lamp holder with a thread or fitting buckle. The electricallyconductive sleeve 31 and theconductive head 32 are electrically connected to a power supply line, eliminating the need for a conventional copper lamp cap and an insulation sheet disposed at the bottom of the copper lamp cap to isolate a positive pole and a negative pole. Thus, safety will be increased, the costs resulting from multiple components are reduced, and production flow is simplified, thus increasing the production volume. - Preferably, an outer side surface of the
insertion portion 11 is provided with at least one sealing step. The sealing step increases a contact area with the waterproof insulationplastic lamp cap 2, thus blocking water entry, increasing sealing performance, and improving waterproofness. When the waterproof insulationplastic lamp cap 2 and thelampshade 1 are integrally formed by injection molding, the sealing step may also enable the waterproof insulationplastic lamp cap 2 to be connected with the lampshade in a buckling manner, thus further increasing a connection strength and a sealing performance. - Specifically, the lamp core body 4 includes a
lamp core column 41, a firstconductive wire 43, a secondconductive wire 44, and at least oneLED lamp filament 45. Thelamp core column 41 is inserted into theinsertion portion 11, and theLED lamp filament 45 is fixedly mounted on thelamp core column 41. One end of the firstconductive wire 43 is in electrical connection with theLED lamp filament 45, and the other end of the firstconductive wire 43 is in electrical connection with the electricallyconductive sleeve 31. One end of the secondconductive wire 44 is in electrical connection with theLED lamp filament 45, and the other end of the secondconductive wire 44 is in electrical connection with theconductive head 32. TheLED lamp filament 45 is series-connected between the firstconductive wire 43 and the secondconductive wire 44. The electricallyconductive sleeve 31 and theconductive head 32 are connected with positive and negative currents respectively to form a circuit, such that theLED lamp filament 45 emits light. TheLED lamp filament 45 features high lumen, low heat generation, no light attenuation, and long service life and the like, increasing the stability of the lamp bulb and prolonging it service life. Preferably, 2-4LED lamp filaments 45 may be series-connected to increase its lumen. - Specifically, a
thread 21 is integrally formed on the outer sidewall of the waterproof insulationplastic lamp cap 2, and the electricallyconductive sleeve 31 includes a lock-inpart 33 with an opening. The lock-inpart 33 is sleeved on the bottom of theinsertion portion 11. Two end portions of the lock-inpart 33 vertically extend upward to form a wave-likeconductive column 34 matched withthread 21 respectively. Theconductive column 34 protrudes out of an outer sidewall of thethread 21, and the firstconductive wire 43 is in electrical connection with eitherconductive column 34. The lock-inpart 33 is fitted on the bottom of theinsertion portion 11. After the waterproof insulationplastic lamp cap 2 is injection-molded, theconductive column 34 protrudes out of the waterproof insulationplastic lamp cap 2 and is shaped like a wave along the contour of thethread 21. The waterproof insulationplastic lamp cap 2 is thread-connected to a conventional lamp holder throughthread 21 and theconductive column 34 is in electrical connection with a power supply contact on the lamp holder. - Specifically, the outer sidewall of the waterproof insulation
plastic lamp cap 2 has a smooth surface, and the electricallyconductive sleeve 31 includes a cylindricalconductive spring 35. The upper and lower ends of theconductive spring 35 extend toward an axis respectively to form a fixingcolumn 36. A mountinghole 12 is opened at the bottom of theinsertion portion 11, and a mountinggroove 42 is opened on the top of thelamp core column 41 or the top of theinsertion portion 11. The two fixingcolumns 36 are respectively inserted into the mountinghole 12 and the mountinggroove 42. The firstconductive wire 43 is in electrical connection with either fixingcolumn 36, and theconductive spring 35 protrudes out of the outer sidewall of the waterproof insulationplastic lamp cap 2. The electricallyconductive sleeve 31 may adopt a cylindricalconductive spring 35. When the waterproof insulationplastic lamp cap 2 is injection-molded, theconductive spring 35 is exposed. In this case, theconductive spring 35 can serve as athread 21 to connect with the conventional lamp holder as well as supply power from the conventional lamp holder, thus achieving a higher degree of integration. - Specifically, the electrically
conductive sleeve 31 and theconductive head 32 are both made of a metallic conductive material, and the waterproof insulationplastic lamp cap 2 is made of an insulation plastic material. - Specifically, a drive element 46 for driving the
LED lamp filament 45 is disposed on the firstconductive wire 43 or the secondconductive wire 44, and the drive element 46 is located inside or around thelamp core column 41. An exhaust tube extending externally is provided inside thelamp core column 41. The drive element 46 is disposed in a space in thelamp core column 41 for the purpose of protection, and the exhaust tube is used to perform vacuumization. After vacuumization is completed, the exhaust tube should be sealed up to maintain a vacuum state. Thus, the position of fusion of the exhaust tube can be kept airtight, increasing the product quality, and reducing the failure rate. - Specifically, the
lamp core column 41 is made of a glass material or a plastic material. When thelamp core column 41 is made of a glass material, the firstconductive wire 43, the secondconductive wire 44, and thelamp core column 41 can be integrally connected by performing high-temperature sintering on the top of thelamp core column 41. In this way, during an automatic or manual production, the position of the lamp core body 4 can be fixed, thus increasing the qualification rate of the products. When thelamp core column 41 is made of plastic material, thecore column 41 is integrally formed, and the end of thecore column 41 is provided with a fixing groove, and the firstconductive wire 43 and the secondconductive wire 44 are electrically connected by a metal conductive wire. the metal conductive wire is fixed in the fixing groove so that the firstconductive wire 43, the secondconductive wire 44, and thelamp core column 41 are linked together. - The above descriptions are merely made to the preferred embodiments of the present invention. Those skilled in the art may make any change to the specific embodiments and their application scope based on the idea of the present invention. The contents of the present specification shall not be understood as limiting of the present invention.
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CN202210014214.9A CN114183700A (en) | 2021-11-17 | 2022-01-06 | High-waterproof high-insulation simple colloid bulb without traditional lamp holder |
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USD1013908S1 (en) * | 2021-12-22 | 2024-02-06 | Haitao Zhan | String light bulb |
USD1030100S1 (en) * | 2022-02-23 | 2024-06-04 | Xiaobo Wang | Lamp |
CN221348848U (en) * | 2023-12-18 | 2024-07-16 | 四川杰米照明科技有限公司 | Shadow-free LED waterproof bulb |
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CN201796863U (en) * | 2010-07-15 | 2011-04-13 | 许明舜 | Improved structure for lamp bulb |
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WO2013116833A1 (en) * | 2012-02-03 | 2013-08-08 | John Bogart | Low voltage led lighting system |
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US20080174224A1 (en) * | 2007-01-24 | 2008-07-24 | Unity Opto Technology Co., Ltd. | Lamp head structure |
CN201796863U (en) * | 2010-07-15 | 2011-04-13 | 许明舜 | Improved structure for lamp bulb |
US20150062929A1 (en) * | 2013-08-30 | 2015-03-05 | Tyco Electronics Corporation | Light bulb assembly |
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US11739892B2 (en) | 2023-08-29 |
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