CA2901091C - Rotating end caps for led lamp tube for fluorescent light tube replacement - Google Patents

Rotating end caps for led lamp tube for fluorescent light tube replacement Download PDF

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Publication number
CA2901091C
CA2901091C CA2901091A CA2901091A CA2901091C CA 2901091 C CA2901091 C CA 2901091C CA 2901091 A CA2901091 A CA 2901091A CA 2901091 A CA2901091 A CA 2901091A CA 2901091 C CA2901091 C CA 2901091C
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CA
Canada
Prior art keywords
declination
end cap
lamp tube
led lamp
rotatable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA2901091A
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French (fr)
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CA2901091A1 (en
Inventor
Dongyang Cao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRECO TECH INDUSTRIES Inc
Original Assignee
GRECO TECH INDUSTRIES Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GRECO TECH INDUSTRIES Inc filed Critical GRECO TECH INDUSTRIES Inc
Priority to CA2901091A priority Critical patent/CA2901091C/en
Priority to CN201510753659.9A priority patent/CN105444130B/en
Publication of CA2901091A1 publication Critical patent/CA2901091A1/en
Priority to HK16111300.4A priority patent/HK1223148A1/en
Application granted granted Critical
Publication of CA2901091C publication Critical patent/CA2901091C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/65—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
    • 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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts
    • 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]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • H01R33/955—Holders with built-in electrical component with switch operated manually and independent of engagement or disengagement of coupling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

An LED Lamp Tube that is rotatable after installation in a formerly fluorescent light fixture, enabling selectability of direction of illumination by LED tubes. Rotating / rotatable end caps fit onto a lamp tube housing that is thereby rotatable within the end caps, while maintaining electrical supply to an illuminator within the lamp tube. An end cap assembly comprises an end cap having a key hole for a contact key and terminal holes for pin terminals, a contact key assembly with a contact cam to make an electrical connection between the pin terminals and an illuminator within the lamp tube, and a declination ring having a shaft socket.

Description

ROTATING END CAPS FOR LED LAMP TUBE FOR FLUORESCENT LIGHT TUBE
REPLACEMENT
SPECIFICATION
FIELD OF INVENTION
This invention relates to a novel device in the general field of LED (Light Emitting Diode) tube lamps, and more specifically to a means by which one may rotate the main tube of an LED lamp to provide illumination at selectable angles of incidence, while maintaining secure electrical connection with the lamp holder.
BACKGROUND OF THE INVENTION
LED Tube Lamps are rapidly replacing less efficient and more environmentally problematic fluorescent tubes. LED Tube lamps are commonly designed to fit into existing fluorescent tube fixtures. To replace the lamp a user inserts both ends of a bi-pin tube into each lampholder fixture and then turns the tube 90 degrees to engage the pins into the powered spring contacts.
Illumination from fluorescent tubes is non-directional due to the nature of fluorescing gases inside an evacuated tube, whereas LEDs are soldered to a flat surface that emits light in one direction. The problem with existing LED tube lamps is that if the user wants to rotate the tube to direct the light at a specific angle of incidence, in all likelihood the tube will fall out of the fixture. What is needed is an LED tube lamp that allows the user to rotate the main tube of the lamp, while the end caps that ensure electrical contact with the fixture's lampholders remain stationary. In addition, any mechanism that maintains electrical contact while rotating the lamp tube, may also be used to ensure contact if rotation is not required.
SUMMARY OF THE INVENTION
The Rotating End Caps for Led Tube for Fluorescent Replacement provides an LED
Lamp Tube that is rotatable after installation in a formerly fluorescent light fixture, enabling selectability of direction of illumination by LED tubes. The invention provides securement of the LED Lamp Tube in the fixture, even while a user adjusts the tube's angle of incidence for optimum results.
A Rotating End Caps for LED Tube for Fluorescent Replacement allows ease of installation or upgrading while ensuring both mechanical and electrical securement. By providing an adjustable angle of incidence, the user is able to reduce direct glare from an LED tube by turning the tube more directly onto the workspace below, as backlighting by projecting light onto a back wall, or as direct incident lighting. One possible application may be in hydroponic gardens which use LED lights, whereby the angle of incidence can be adjusted as needed during the growing cycle of plants to provide optimum light levels as would be provided by the sun throughout the day.
2 The Rotating / rotatable end caps fit onto a lamp tube housing that is thereby rotatable within the end caps, while maintaining electrical supply to an illuminator within the lamp tube. This is accomplished by each end cap assembly for a lamp tube for fluorescent replacement, comprising:
a) an end cap having a key hole for a contact key, and a pair of terminal holes for a pair of pin terminals;
b) a contact key assembly, having a pair of pin terminals mounted to respective terminal contacts, a contact key with a contact cam that upon rotation of the contact key presses PCB
(printed circuit board) contacts onto the respective terminal contacts to make an electrical connection between the pin terminals and an illuminator within the lamp tube;
c) a declination ring having at least one cap fastener socket and a shaft socket.
The end cap assembly is rotatably mounted to a first end of a housing for the lamp tube, and a like rotatable end cap assembly is likewise rotatably mounted to an opposite end of the housing for the lamp tube.
In a preferred embodiment:
a) the lamp tube contains an array of LEDs as an energy-efficient and durable illumination
3 source;
b) the contact key assembly has a ring shaft and the declination ring has a complementary shaft socket;
c) the end cap assembly clips into a declination gear of a rotatable housing for the lamp tube, the declination ring having a cap fastener socket, a clip segment, and a declination segment with at least one declination tooth, allowing the declination ring to rotate incrementally with declination segments that flex upon rotation force being applied to the lamp tube within a latnpholder and allow the declination tooth to travel around a declination gear;
d) the first end of the housing has declination ring stops and an end cap fastener guide;
e) at least one of the PCB contacts passes electrical current to an LED
Controller PCB within the lamp tube.
f) the end cap has declination notches and the first end of the housing has a declination index notch;
g) the contact key has a lampholder tab;
h) the lamp tube has an LED track heatsink with a fastener clip, an LED strip slot and a tube guide slot;
4 i) the declination ring has a housing stop to prevent over-rotation of the housing;
j) the end cap assembly is secured together by means of cap fasteners which secure the end cap through fastener holes to corresponding cap fastener sockets on the declination ring.
Essentially the invention provides a LED lamp tube for replacement of a fluorescent tube in a lampholder, the LED lamp tube having a housing that is rotatable within end caps mountable in the lampholder, a first end cap assembly that is mountable to a first end of the lamp fixture and having a second end cap assembly that is mountable to a second end of the lamp fixture.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a front isometric exploded view of the end cap assembly and rotatable housing at either end of a rotatable LED lamp tube.
Fig. 2 shows a front isometric view of the end cap & rotatable housing assembly, which enable a user to rotate a PCB, Lamp Tube, and LED trackTheatsink.
Fig. 3a shows a rear isometric view of the rotatable end cap; Fig. 3b shows the outside facing view and Fig. 3c the inside facing view of same.

Fig. 4a shows a rear isometric view of the declination ring; Fig. 4b shows the side view; Fig. 4c shows the inside facing view; and Fig. 4d shows the outside facing view of same.
Fig. 5a shows a front isometric view of the contact key; Fig. 5b shows the rear isometric view of same.
Fig. 6a shows a side isometric view of a pin terminal, terminal contact and PCB contact. Fig. 6b shows a facing isometric view of two pin/contact sets and the contact key as assembled into the outside facing side of a declination ring. Fig. 6c shows a rear isometric view of the assembly in Fig. 6b.
Fig. 7a shows a rear isometric view of a rotatable housing; Fig. 7b shows its outside facing end, while Fig. 7c shows its inside facing end including cutaway views of related lamp tube elements.
Fig. 8a shows an inside facing view of a common bi-pin lampholder with a transparent facing view of an end cap, pin terminals and lampholder tab as it is slid between the lampholder's pin guides. Fig. 8b shows the same after the end cap elements are rotated into the pin catches.
DETAILED DESCRIPTION
All elements will now be introduced by reference to drawings, then how each element functions and interacts with each other element will be described where relevant.
Fig. 1 shows a front isometric exploded view of the end cap assembly 12, comprised of a rotatable end cap 14, with fastener holes 16, fasteners 18, key hole 20, terminal holes 22, and declination notches 24; a contact key 26; two sets of pin terminals 34, terminal contacts 36, and PCB contacts; and a declination ring 40 with cap fastener sockets 42, a shaft socket 44, and a housing stop 52. The end cap assembly 12 clips into the declination gear 56 of a rotatable housing 54 with ring stops 58, an index notch 60, a fastener guide 64, and its internal LED
Controller PCB 76.
Fig. 2 shows a front isometric view of the Rotating End Caps for LED Tube for Fluorescent Replacement 10, with the end cap assembly 12 & rotatable housing 54 as deployed to enable a user to rotate the attached PCB 76, Lamp Tube 78, and LED track/heatsink 68.
Fig. 3a shows a rear isometric view of the rotatable end cap 14 with its fastener hole 16 and declination notch(es) 24. Fig. 3b shows the outside facing view of the rotatable end cap 14 with its fastener holes 16, key hole 20, terminal holes 22 and declination notch(es) 24. Fig. 3c shows the inside facing view of Fig. 3b.
Fig. 4a shows a rear isometric view of the declination ring 40 with cap fastener socket 42, a clip segment 46, a declination segment 48 with a declination tooth 50, also a housing stop 52; Fig. 4b shows a side view of Fig. 4a; Fig. 4c shows the inside facing view of same with a view of a shaft =
socket 44; and Fig. 4d shows the outside facing view of same.
Fig. 5a shows a front isometric view of the contact key 26 with its lampholder tab 28 and contact cam 30; Fig. 5b shows the rear isometric view of same including a ring shaft 32.
Fig. 6a shows a side isometric view of a pin terminal 34, terminal contact 36 and PCB contact 38. Fig. 6b shows a facing isometric view of two pin/contact sets (see Fig.
6a) and a contact key 26 as assembled into the outside facing side of a declination ring 40. Fig. 6c shows a rear isometric view of the assembly in Fig. 6b.
=
Fig. 7a shows a rear isometric view of a rotatable housing 54 with a track fastener support 62 and its fastener guide 64; Fig. 7b shows the outside facing end of a rotatable housing 54 with declination gear 56, ring stops 58 and fastener guide; Fig. 7c shows its inside facing end including cutaway views of a track fastener support 62, track fastener 66, the LED
Track/Heatsink 68 with its fastener clip 70, LED strip slot 72 and tube guide slot 74, the LED
Controller PCB 76, the Lamp Tube 78 with its tube guides 80.
Fig. 8a shows an inside facing view of a common bi-pin lampholder 82 with a cutaway abstract view of a rotatable end cap 14 showing pin terminals 34 and lampholder tab 28 as they are slid between the lampholder's pin guides 84, in the direction of the segmented arrow. Fig. 8b shows the pin terminals 34 rotated 90 degrees into the pin catches 86 (arrow), while the lampholder tab 28 of the contact key 26 remains stationary. Also shown on the lampholders 82 are its wire 8 connectors 88.
The preferred embodiment of the Rotating End Caps for LED Tube for Fluorescent Replacement will now be described in detail.
Electrical Aspects:
Starting from the inside and working to the ends, the LED Track/Heatsink 68 (Fig. 2) provides an LED strip slot 72 (Fig. 7c) that both supports and provides heatsinking for strips of LED
arrays that provide illumination for the tube lamp 10. At one or both ends of the LED
Track/Heatsink 68 are LED Controller PCBs 76 which convert and regulate power supplied from lampholders 82 (Figs. 8a/b) from pin terminals 34 through the end cap assembly 12 when the lamp tube 10 is rotated into position as shown in Fig. 8b. When the end caps 14 are rotated so that the terminals 34 engage the conductive pin catches 86, the lampholder tab 28 of the contact key 26 is locked between the pin guides 84. Rotation causes the contact cam 30 to connect each set of terminal contacts 36 with each set of PCB contacts 38, which supplies lampholder 82 power to the PCB(s) 76. (Note: Each PCB contact 38 tab as shown in Fig. 6c is electrically connected directly to the adjacent PCB 76) Basically, when a user inserts (Fig. 8a) the Lamp Tube 10 into a fixture using hi-pin lampholders 82, and rotates as shown in Fig. 8b, the tube 10 may be electrically powered, provided the lampholders 82 are energized.
Mechanical Aspects:

=

In order to provide the ability for the user to incrementally adjust angle of incidence of the lamp tube 10, a means to both lock the end caps 14 into the lampholders 82 and at the same time allow rotation of the lamp tube 78 and LED track/heatsink 68 must be provided. The declination ring 40 is held by means of clip segments 46 (Fig. 4a) inside the declination gear 56 (Fig. 7b) of the rotatable housing 54. Said ring 40 is able to rotate incrementally as its declination segments 48 flex and allow declination teeth 50 to fixedly travel around the declination gear 56. Since LEDs only project light from one side of their substrate, rotation beyond 180 degrees is prevented when the housing stop 52 on the ring 40 encounters either ring stop 58 as shown in Figs. 1 or 7b.
By these means, the declination ring 40 and the remainder of the end cap assembly 12 allow the user to rotate the lamp tube 78 (usually by means of each housing to avoid smudging the tube) without disengaging the pin terminals of the lamp 10. Basically, each end cap assembly 12 is locked into each lampholder 82, while each housing 54 and its associated lamp tube 78 can be rotated incrementally by means of the declination ring 40.
The contact key 26 is the means by which the electrical contacts are made within each end cap assembly 12. The ring shaft 32 (Fig. 5b) of the contact key 26 inserts into and freely rotates within the shaft socket 44 (Figs. 1 & 6c) of the declination ring 40. Fig. 6b is the reverse side of the elements shown in Figs. 8a, wherein the lampholder tab 28 is in line with the pin terminals 34, and neither contact is made. Fig. 8b shows the lampholder tab 28 secured between pin guides 84, so that by rotating the end cap 14 (and therefore the declination ring 40), the contact cams 30 press together both sets of contacts (36 to 38). By this means, rotating the end cap assembly 12 engages electrical contact between pin terminals 34 and the PCB 76, while still permitting incremental rotation of the housings 54 and lamp tube 78 by means of the declination ring 40.
Additional Aspects:
As seen in Figs. 8a & b, once the end caps 14 are engaged, its declination notches 24 may be used in conjunction with the index notch 60 on the housing 54 to select specific increments of angle of incidence up to approximately 180 degrees, 90 degrees each side of the axis perpendicular to the LED track 68. The user can thereby adjust the lamp tube 78 by means of either housing 54 to select the specific direction of illumination required.
As shown in Figs. 1 & 2, the end cap assembly 12 is secured together by means of cap fasteners 18 which secure the end cap 14 through fastener holes 16 to corresponding cap fastener sockets 42 on the declination ring 40. When secured, the remaining elements of the end cap assembly 12 are held inside the end cap 14 by the declination ring 40. As mentioned above, the assembly 12 then snaps into the declination gear 56 of the housing 54 and is secured by means of clip segments 46 and declination segments 48. As shown in Fig. 7a, the Track Fastener Support 62 is embedded in the bottom of the Rotatable Housing 54 in order to provide a means to secure the LED track/heatsink 68 within the lamp tube 78. Fig. 7c shows the end of a track fastener 66 (a long bolt) inserted through the fastener guide 64 (Fig. 7b), and threaded into the fastener clip 70 in the bottom of the LED Track/heatsink 68. Fig. 9b of an alternate embodiment shows cutaway detail of the fastener guide 64. By this means, the track fastener 66 pins each end of the LED
track/heatsink 68 to the support 62 at the bottom of each housing 54 and the length of each lamp tube 78.
The preferred materials for constructing rotatable LED lamp tubes will now be described.
Terminals and contacts are made from conductive, non-corrosive metal. The LED
Track/Heatsink is formed from extruded aluminum or equivalent material capable of supporting LED arrays and allowing sufficient heatsirtking capabilities. All other elements excluding the PCB and possibly fasteners are made from extruded or molded polyearbonate or plastic like material with sufficient strength and mechanical resiliancy to operate reliably. Fasteners are likely made from metal. The lamp tube may bc either transparent or translucent depending on user requirements. Other materials are not excluded if they provide similar or improved capabilities for the same ends.
The foregoing description of the preferred apparatus and method of installation should be considered as illustrative only, and not limiting. For example, a lamp tube with an illuminator other than LEDs could usefully be rendered rotatable with this invention.
Other forming techniques and other materials may be employed towards similar ends. Various changes and modifications will occur to those skilled in the art, without departing from the true scope of the invention as defined in the above disclosure, and the following general claims.

Claims (20)

1. A rotatable end cap assembly for an LED lamp tube for use in a fluorescent light tube replacement in a lampholder, comprising a rotatable housing having:
a) an end cap having a key hole for a contact key, and a pair of terminal holes for a pair of pin terminals;
b) a contact key assembly, having the pair of pin terminals mounted to respective terminal contacts, and having the contact key provided with a contact cam that, upon rotation of the contact key assembly, presses PCB contacts of an LED Controller PCB within the LED lamp tube onto the respective terminal contacts to make an electrical connection between the pin terminals and an illumination source within the LED lamp tube; and c) a declination ring, having at least one cap fastener socket and a shaft socket in which a ring shaft of the contact key is inserted and rotates and a declination ring engagement means;
in order to provide and maintain, during rotation of the rotatable housing, an electrical connection between supply terminals in the lampholder and an LED controller circuit within LED lamp tube.
2. The rotatable end cap assembly of Claim 1, rotatably mounted to a first end of the rotatable housing for the LED lamp tube.
3. The rotatable end cap assembly of Claim 2, in combination with a like rotatable end cap assembly likewise rotatably mounted to an opposite end of the rotatable housing for the LED
lamp tube.
4. The rotatable end cap assembly of Claim 1, in which the LED lamp tube has an array of LEDs as the illumination source.
5. The rotatable end cap assembly of Claim 1, in which the contact key assembly has a ring shaft and the declination ring has a complementary shaft socket.
6. The rotatable end cap assembly of Claim 1, in which the declination ring engagement means is a declination gear of a rotatable housing for the LED lamp tube and the end cap assembly clips into the declination gear.
7. The rotatable end cap assembly of Claim 6, in which the declination ring has a clip segment, and a declination segment with at least one declination tooth, allowing the declination ring to rotate incrementally with declination segments that flex upon a rotation force being applied to the LED lamp tube within the lampholder and allow the declination tooth to travel around a declination gear.
8. The rotatable end cap assembly of Claim 2, in which the first end of the rotatable housing has declination ring stops.
9. The rotatable end cap assembly of Claim 2, in which the first end of the rotatable housing has an end cap fastener guide.
10. The rotatable end cap assembly of Claim 4, in which at least one of the PCB contacts passes electrical current to an LED Controller PCB within the LED lamp tube.
11. The rotatable end cap assembly of Claim 2, in which the end cap has declination notches and the first end of the rotatable housing has a declination index notch.
12. The rotatable end cap assembly of Claim 1, in which the contact key has a lampholder tab for engaging the lampholder.
13. The rotatable end cap assembly of Claim 1, in which the rotatable housing has a track fastener support and a fastener guide.
14. The rotatable end cap assembly of Claim 1, in which the LED lamp tube has an LED track heatsink with a fastener clip, an LED strip slot and a tube guide slot.
15. The rotatable end cap assembly of Claim 4, in which the declination ring has a housing stop to prevent over-rotation of the rotatable housing.
16. The rotatable end cap assembly of Claim 1, in which the end cap assembly is secured together by means of cap fasteners which secure the end cap through fastener holes to corresponding cap fastener sockets on the declination ring.
17. An LED lamp tube for replacement of a fluorescent light tube in a lampholder, the LED lamp tube having an LED lamp housing that is rotatable within end caps mountable in the lampholder, the LED lamp tube having a first end cap assembly that is mountable to a first end of the lampholder and having a second end cap assembly that is mountable to a second end of the lampholder during replacement, the first and second end cap assemblies each comprising:
a) an end cap having a key hole for a contact key, and a pair of terminal holes for a pair of pin terminals;
b) a contact key assembly, having the pair of pin terminals mounted to respective terminal contacts, and the contact key provided with a contact eam that, upon rotation of the contact key assembly, presses PCB contacts of an LED Controller PCB within the LED lamp tube onto the respective terminal contacts to make an electrical connection between the pin terminals and an illumination source within the LED lamp tube; and c) a declination ring, having at least one cap fastener socket and a shaft socket in which a ring shaft of the contact key is inserted and rotates, and a declination ring engagement means;
in order to provide and maintain, during rotation of the LED lamp housing, an electrical connection between supply terminals in the lampholder and an LED controller circuit within the LED lamp tube.
18. The LED lamp tube for replacement of a fluorescent light tube in a lampholder of Claim 17, in which at least one end of the LED lamp housing contains an LED controller PCB that converts and regulates power supplied from the lampholder via the pair of pin terminals to at least one of the first and second end caps when the LED lamp tube is rotated while in a secured position in the lampholder.
19. The rotatable end cap assembly of Claim 3, in which:
a) the LED lamp tube has an array of LEDs as the illumination source;
b) the contact key assembly has a ring shaft and the declination ring has a complementary shaft socket;
c) the end cap assembly clips into a declination gear of a rotatable housing for the LED lamp tube, the declination ring having a cap fastener socket, a clip segment, and a declination segment with at least one declination tooth, allowing the declination ring to rotate incrementally with declination segments that flex upon a rotation force being applied to the LED
lamp tube within the lampholder and allow the declination tooth to travel around the declination gear;
d) the first end of the rotatable housing has declination ring stops and an end cap fastener guide;
e) at least one of the PCB contacts passes electrical current to an LED
Controller PCB within the LED lamp tube;
f) the end cap has declination notches and the first end of the rotatable housing has a declination index notch;
g) the contact key has a lampholder tab for engaging the lampholder;
h) the LED lamp tube has an LED track heatsink with a fastener clip, an LED
strip slot and a tube guide slot;
i) the declination ring has a housing stop to prevent over-rotation of the rotatable housing; and j) the end cap assembly is secured together by tneans of cap fasteners which secure the end cap through fastener holes to corresponding cap fastener sockets on the declination ring.
20. The LED lamp tube for replacement of a fluorescent light tube in a lampholder of Claim 18, in which:
a) the LED lamp tube has an array of LEDs as the illumination source;
b) the contact key assembly has a ring shaft and the declination ring has a complementary shaft socket;
c) the end cap assembly clips into a declination gear of a rotatable housing for the LED lamp tube, the declination ring having a cap fastener socket, a clip segment, and a declination segment with at least one declination tooth, allowing the declination ring to rotate incrementally with declination segments that flex upon a rotation force being applied to the LED
lamp tube within the lampholder and allow the declination tooth to travel around the declination gear;
d) the first end of the rotatable housing has declination ring stops and an end cap fastener guide;
e) at least one of the PCB contacts passes electrical current to an LED
Controller PCB within the LED lamp tube;
f) the end cap has declination notches and the first end of the rotatable housing has a declination index notch;
g) the contact key has a lampholder tab for engaging the lampholder;

h) the LED lamp tube has an LED track heatsink with a fastener clip. an LED
strip slot and a tube guide slot;
i) the declination ring has a housing stop to prevent over-rotation of the rotatable housing; and j) the end cap assembly is secured together by means of cap fasteners which secure the end cap through fastener holes to corresponding cap fastener sockets on the declination ring.
CA2901091A 2015-08-20 2015-08-20 Rotating end caps for led lamp tube for fluorescent light tube replacement Expired - Fee Related CA2901091C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2901091A CA2901091C (en) 2015-08-20 2015-08-20 Rotating end caps for led lamp tube for fluorescent light tube replacement
CN201510753659.9A CN105444130B (en) 2015-08-20 2015-11-06 For replacing the rotating end cap of the LED lamp tube of fluorescent tube
HK16111300.4A HK1223148A1 (en) 2015-08-20 2016-09-27 Rotating end caps for led tube for fluorescent replacement led

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2901091A CA2901091C (en) 2015-08-20 2015-08-20 Rotating end caps for led lamp tube for fluorescent light tube replacement

Publications (2)

Publication Number Publication Date
CA2901091A1 CA2901091A1 (en) 2015-12-18
CA2901091C true CA2901091C (en) 2019-08-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2901091A Expired - Fee Related CA2901091C (en) 2015-08-20 2015-08-20 Rotating end caps for led lamp tube for fluorescent light tube replacement

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CN107524954B (en) * 2016-06-22 2024-06-11 赛尔富电子有限公司 Angle adjusting mechanism of LED strip lamp
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CN202065944U (en) * 2011-03-25 2011-12-07 黄晓华 Lamp holder capable of adjusting illumination angle of lamp tube
JP2013084534A (en) * 2011-10-12 2013-05-09 Kenji Igarashi Movable cap for rotating cylindrical tube (led lighting tube) and angle-adjusting for fixation
CN102900981B (en) * 2012-09-29 2015-09-02 宁波同泰电气股份有限公司 The two-sided fluorescent lamp of rotatable LED of power supply external
SG195090A1 (en) * 2012-10-22 2013-12-30 Aztech Technologies Pte Ltd An led lighting device having elastically biased end caps
CN202902190U (en) * 2012-10-30 2013-04-24 江门市日益丰光电科技有限公司 Rotary lamp holder
CN203190236U (en) * 2013-05-08 2013-09-11 广东钜豪照明电器有限公司 LED (Light Emitting Diode) lamp tube with rotational lamp cap
CN203349180U (en) * 2013-08-01 2013-12-18 惠州市三和物联节能科技有限公司 Modulator tube structure capable of changing mounting angle
CN203336507U (en) * 2013-08-02 2013-12-11 宁波龙宇光电科技有限公司 Rotatable daylight lamp end cap
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