US20160245499A1 - Led strobe light with integrated magnet and heat sink chimney - Google Patents
Led strobe light with integrated magnet and heat sink chimney Download PDFInfo
- Publication number
- US20160245499A1 US20160245499A1 US15/145,599 US201615145599A US2016245499A1 US 20160245499 A1 US20160245499 A1 US 20160245499A1 US 201615145599 A US201615145599 A US 201615145599A US 2016245499 A1 US2016245499 A1 US 2016245499A1
- Authority
- US
- United States
- Prior art keywords
- base
- mounting post
- lens
- strobe light
- light
- 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.)
- Abandoned
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Classifications
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- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/2611—Indicating devices mounted on the roof of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/2615—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic mounted on the vehicle body, e.g. with magnets
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- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
-
- 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
- F21V21/096—Magnetic 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
-
- 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
-
- 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
- F21Y2101/00—Point-like light sources
-
- F21Y2101/02—
-
- 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
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
- F21Y2107/40—Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
-
- F21Y2111/007—
-
- 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]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
Definitions
- Strobe lights are well-known products. A number of technologies are possible for use in strobe lights. Gas discharge strobe lights find particular application for emergency vehicles, radio towers, photography, and entertainment venues. Such conventional strobe lights utilize incandescent or gas light sources. Incandescent and gas source strobe lights have relatively high energy consumption and short lifetimes, which result in higher maintenance costs. Gas discharge strobe lights may be more susceptible to breaking, may produce ozone due to high voltage requirements, and may produce ultraviolet light that breaks down many materials. Further, such strobe lights have complicated electronics used to maintain the flashing operation.
- HID lamps high intensity discharge lamps. Light is produced by high intensity discharge lamps when an electric current arced between two closely spaced electrodes in a sealed quartz-glass or ceramic capsule, known as a discharge tube, arc tube, or burner, containing a vapor of metal and gas. Free electrons in the arc collide with the metal atoms in the vapor exciting electrons of the metal atoms to a higher energy state. When the excited electrons return to their original, lower energy level, electromagnetic radiation is emitted having a wavelength determined by the energy level of the electrons and the constituency of the vapor into the capsule. Compared to filament-type halogen lamps, HID lighting typically produces light more efficiently and with a color temperature more closely approximating that of sunlight.
- an HID lamp does not immediately illuminate when power is supplied to the lamp. While initiating operation of an HID lamp takes considerable time, the time required to re-strike (restart) an extinguished lamp is typically longer, and commonly twice as long as the cold startup interval. For these and other reasons, strobe lights that use HID lamps are less desirable in many applications.
- strobe lights It is common for strobe lights to generate large amounts of heat due to the high levels of energy required generate the bright, flashing light outputs. Heat can have detrimental effects on many types of light generating devices. Since most strobe lights include a cover or lens within which the light generating devices are housed, the heat is trapped in proximity to the light generating members, which further increases the operating temperatures of the strobe light.
- a strobe light having a base, a mounting post, a plurality of light emitting diode (LED) lights, a lens, and a channel.
- the mounting post extends vertically from the base.
- the plurality of LED lights are mounted around a periphery of the mounting post.
- the lens is connected to the base and covers the mounting post and the plurality of LED lights.
- the channel extends through the base, mounting post and lens. Air flowing through the channel transfers heat generated by the plurality of LED lights out of the strobe light.
- the channel may include a liquid-tight interface with the base, mounting post and lens.
- the strobe light may include a connector configured to connect the mounting post to the lens, and the channel may extend through the connector.
- the connector may extend through the lens and be threadably connected to the mounting post.
- the lens may include a bottom end and a top end, wherein the bottom end is releasably connected to the base, and the channel extends through the top end.
- the strobe light may include a plurality of fins extending radially into the channel.
- the plurality of fins may extend along a length of the mounting post.
- the base may include a plurality of side openings to permit airflow into the channel along a bottom side of the base.
- the strobe light may be oriented with the mounting post extending vertically upward from the base, and the channel may be open along a top surface of the lens.
- the base may include a plurality of magnets embedded in the base.
- a strobe light which includes a base, a mounting post, a plurality of light emitting diode (LED) lights, and a lens.
- the base includes a first hole extending vertically there through and at least one lateral hole.
- the mounting post is secured to the base and includes a pass through bore aligned with the first hole.
- the plurality of LED lights are positioned on the mounting post.
- the lens is releasably mounted to the base to enclose at least the plurality of LED lights.
- the lens includes a second hole aligned with the pass through bore. The at least one lateral hole, the first and second holes, and the pass through bore are arranged in flow communication with each other to provide a path for heat to exit the strobe light.
- the base may have a circular shape with top and bottom surfaces and a peripheral edge, wherein the first hole may extend through the base from the top surface to the bottom surface, and the at least one lateral hole may be positioned at the peripheral edge and in flow communication with the first hole along the bottom surface.
- the lens may be connected to the mounting post with a liquid-tight connection, and the mounting post may be connected to the base with a liquid-tight connection.
- the strobe light may include a plurality heat transfer fins extending into the pass through bore along a length of the pass through bore.
- the strobe light may include a connector extending through the second hole and into contact with the mounting post to connect the lens to the mounting post.
- the connector may include an opening providing a flow path from the pass through bore and out of the lens.
- the first hole may include a plurality of threads configured to threadably mount the base to a pipe mount.
- the method includes providing a base, a lens, a mounting post, and a plurality of light emitting diode (LED) lights positioned on the mounting post, wherein the base includes a first hole, the lens includes a second hole, and the mounting posting includes a pass through bore.
- the method also includes securing the mounting post to the base, securing the lens to the base with the mounting post and plurality of LED lights enclosed in the lens, and aligning the first and second holes and the pass through bore with each other to create an airflow channel through the strobe light.
- the base may include at least one lateral opening positioned at a periphery of the base and being arranged in flow communication with the first hole to create a flow path for air from outside the strobe light to the airflow channel.
- the method may include connecting the lens to the mounting post with a connector, wherein a portion of the connector may extend through the second hole and into releasable connection with the mounting post.
- the method may include embedding a plurality of magnets in the base.
- a further aspect of the present disclosure relates to a method of transferring heat from a strobe light.
- the method includes providing a base, a lens mounted to the base, a mounting post mounted to the base, and a plurality of light members positioned on the mounting post, wherein the lens encloses the mounting post and plurality of light members.
- the method also includes providing an airflow channel through the base, mounting post, and lens, transferring heat generated by the plurality of light members through the mounting post into air held in the airflow channel, and moving the heated air through the airflow channel and out of the strobe light.
- the mounting post may include a pass through opening forming part of the airflow channel, and a plurality of heat transfer fins extending along a length of the pass through opening to increase a rate of heat transfer.
- the method may include providing a liquid-tight seal between the airflow channel and the plurality of light members.
- the plurality of light members may include a plurality of light emitting diode (LED) lights.
- FIG. 1 is a top perspective view of an example LED strobe light in accordance with the present disclosure.
- FIG. 2 is a bottom perspective view of the LED strobe light of FIG. 1 .
- FIG. 3 is an exploded perspective view of the LED strobe light of FIG. 1 .
- FIG. 4 is a side view of the LED strobe light of FIG. 1 .
- FIG. 5 is a bottom view of the LED strobe light of FIG. 1 .
- FIG. 6 is a cross-sectional view of the LED strobe light of FIG. 4 taken along cross-section indicators 6 - 6 .
- FIG. 7 is a perspective view of a mounting post assembly and control board of the LED strobe light shown in FIG. 3 .
- FIG. 8 is a cross-sectional view of the mounting post assembly and control board shown in FIG. 7 .
- FIG. 9 is an exploded perspective view of the mounting post assembly and control board of FIG. 7 .
- FIG. 10 is a cross-sectional view of the LED strobe light shown in FIG. 6 mounted to a support pipe.
- the present disclosure relates generally to strobe lights, and more particularly relates to strobe lights that include light-emitting diodes (LEDs) as the source of light.
- the LED strobe light may be programmed to create different light patterns. Some example light patterns include a 360° rotating light, a 360° strobe light, a solid light, and various flashing sequences.
- the strobe light may include a plurality of LEDs.
- the LEDs may be arranged circumferentially and face radially outward. Each LED may be individually controlled with the control system of the strobe light. Controlling the LEDs may include turning on and off the LEDs and varying an intensity of light emitted from the LEDs. Operating the LEDs generates heat. Some operations, such as rotational slower modes, produce large amounts of heat. The heat is typically trapped in the structure (e.g., mounting post) to which the LEDs are mounted and the enclosure defined between the lens and the base, which leads to higher operating temperatures for the LEDs. High operating temperatures are typically the most common reasons for failure and light loss in LEDs.
- the strobe light designs disclosed herein facilitate heat transfer away from the LEDs. Removing heat from the LEDs may permit the LED strobe light to be operated at higher power levels without sacrificing LED performance, useful life, and light output.
- the heat transfer features of the example LED strobe lights disclosed herein may include an air channel, which passes through portions of the LED strobe light.
- the air channel may be referred to as a chimney, a heat sink chimney, or a heat transfer chimney.
- the air channel may extend through the base, control board (e.g., main printed circuit board), LED mounting post, and lens to permit air to flow through the LED strobe light. Heat generated by the LEDs may pass into the air channel to heat the air held in the air channel. The heated air may move under natural convection forces out of the LED strobe light.
- the base includes inflow openings around its peripheral edge that permit an inflow of air into the base.
- the inflow of air passes through a post opening positioned centrally on the base, into a pass through bore extending through the control board and mounting post, and out through a hole formed in a top surface of the lens. Since the air held in the air channel rises when heated, natural convention forces may move the heated air out of the LED strobe light and draw unheated air into the air channel.
- the air channel may be sealed relative to the electrical components of the LED strobe light.
- a connector used to connect the lens directly to the mounting post may provide a liquid-tight connection between an outer surface of the lens and the mounting post.
- the mounting post may have a liquid-tight connection with the control board and base, and the lens may be connected to the base with a liquid-tight connection.
- the electrical components of the LED probe light, which are enclosed between the base and the lens, may be sealed (e.g., waterproof) from the air channel.
- the air channel may be exposed to environmental conditions, such as rain or snow, during use of the LED strobe light and the electrical components are protected from exposure to those environmental conditions.
- the LED strobe light may include features that accelerate heat transfer from the LEDs to the air held in the air channel.
- the mounting post may include a plurality of heat transfer fins extending into the pass through bore.
- the pass through bore may includes a plurality of grooves, protrusions or other surface features formed on surfaces thereof (e.g., on surfaces of the heat transfer fins).
- the heat transfer fins and surface features may increase the surface area of the pass through bore, thereby increasing the rate of heat transfer.
- the magnets may assist in releasably mounting the LED strobe light to a support structure such as a hood or cab of a vehicle.
- the magnets may be embedded in the base.
- the magnets may be embedded in the polymeric (e.g., plastic) materials from which the base is formed.
- the magnets may be positioned at spaced apart locations along a bottom surface of the base. The magnets, when spaced as close to the peripheral edge of the base as possible, may provide a stronger pulling force because of the wider magnetic footprint of the base.
- the embedding of the magnets may provide a non-scratch, waterproof arrangement for the magnets on the base.
- FIGS. 1-9 an example LED strobe light 10 is shown and described.
- FIGS. 1, 2 and 4-6 show the LED strobe light 10 fully assembled.
- the LED strobe light is shown in FIG. 3 in a partially exploded view. Portions of the LED strobe light 10 are shown in FIGS. 7-9 .
- the LED strobe light 10 is shown in FIG. 10 mounted to a support pipe to provide an alternative mounting for and airflow path through the LED strobe light 10 .
- the LED strobe light 10 includes a base 12 , a mounting post assembly 14 , a plurality of LED lights 16 , a control board 18 , a lens 20 , and a lens connector 22 , as shown in FIG. 3 .
- the control board 18 is mounted to the mounting post assembly 14 .
- the mounting post assembly 14 is connected to the control board 18 and base 12 .
- the lens 20 is releasably connected to the base 12 along a bottom end of the lens 20 .
- the lens is also connected to the mounting post assembly 14 at a top end of the lens 20 (see FIG. 6 ).
- the lens 20 is connected to the mounting post assembly 14 with the lens connector 22 .
- An air channel may extend through the LED strobe light 10 from the top end of the lens 20 (e.g., at the lens connector 22 ) to the bottom side of the base 12 (see FIG. 6 ).
- the air channel may also extend laterally from a peripheral edge of the base, along the bottom side of the base, and into a center mount aperture formed in the base.
- the air channel extends through a mounting device, such as the pipe 26 shown in FIG. 10 , rather than extending laterally to the lateral openings along the peripheral edge of the base.
- the base 12 includes top and bottom sides 30 , 32 , a peripheral edge 34 , a center mount aperture 36 , a plurality of lateral openings 38 , a plurality of embedded magnets 40 , a lens seat 42 , a plurality of lens fasteners 44 , a plurality of fastener openings 46 , and a mounting seat 48 , as shown in FIGS. 3 and 6 .
- the lateral openings 38 are formed along the peripheral edge 34 to provide access to the bottom side 32 of the base 12 .
- the lateral openings 38 are in flow communication with the center mount aperture 36 .
- the center mount aperture 36 may be positioned centrally on the base 12 and may extend along a central axis of the base 12 .
- the center mount aperture 36 may include a plurality of threads. The threads of center mount aperture 36 may be configured for mounting the LED strobe light 10 to a mounting device such as the pipe 26 shown in FIG. 10 .
- the magnets 40 may be positioned at various spaced apart positions along the bottom side 32 as shown in FIG. 5 .
- the magnets 40 may have any desired shape and size.
- the magnets 40 may have a cubical or cylindrical shape.
- the magnets 40 may be positioned in pairs as shown in FIG. 5 at spaced apart locations around the center mount aperture 36 .
- the magnets 40 may be spaced apart a distance D 1 , D 2 from magnets on an opposite side of the base, as shown in FIG. 5 .
- the distances D 1 , D 2 may be maximized in order to maximize a pulling force and widen a pulling force footprint for the base 12 .
- the magnets 40 may be embedded in material from which the base 12 is formed.
- the base 12 may comprise a polymeric material such as molded plastic.
- the magnets 40 may be co-molded into the polymeric materials of base 12 .
- the base 12 may include a plurality of recesses, grooves or chambers within which the magnets 40 are positioned and then secured in place using, for example, a fastener, adhesives, or a press-fit connection.
- a cover or film may be placed over the magnets 40 to protect the magnets 40 from corrosion and also provide a low abrasive or no scratch interface with the support structure to which the LED strobe light is mounted (e.g., a hood or cab of a vehicle).
- the magnets 40 may be define at least in part a lower most surface of the base 12 as shown in FIG. 6 so that the magnets 40 (or at least the material within which the magnets 40 are embedded) contact the support surface.
- the lens seat 42 of the base 12 is receptive of a bottom end of the lens 20 , as shown in FIGS. 1, 2 and 6 .
- the lens fasteners 44 extend through the lens 20 and into the fastener openings 46 , as shown in FIG. 3 .
- the lens fasteners 44 provide a releasable connection of the lens 20 to the base 12 .
- An interface between the lens 20 and the base 12 may provide a liquid-tight connection.
- the LED strobe light 10 is maintained in a vertically upright position, such as the orientation shown in FIG. 4 . When in an upright position, any liquid applied to the lens 20 runs vertically downward and off of the base 12 and is unable to pass through the interface between the lens 20 and the base 12 at the lens seat 42 .
- a sealing device such as an O-ring may be provided at an interface between the lens 20 and base 12 to improve the liquid-tight connection.
- the mourning post assembly 14 is shown in FIGS. 3 and 7-9 including a mounting post 50 having top and bottom ends 52 , 54 , a plurality of secondary printed circuit boards (PCBs) 56 , PCB fasteners 58 , and a pass through bore 60 .
- the mounting post assembly 14 may also include a plurality of heat transfer fins 62 extending into the pass through bore 60 , a connector seat 64 positioned at the top end 52 , and a base mounting portion 66 at the bottom end 54 .
- the PCB fasteners 58 secure the secondary PCBs 56 to the mounting post 50 at spaced apart locations around an outer periphery of the mounting post 50 .
- the heat transfer fins 62 may extend along a length of the mounting post 50 and may be arranged at circumferentially spaced apart locations within the pass through bore 60 .
- the pass through bore 60 may include a plurality of recesses, protrusions or other surface features along surfaces of the pass through bore 60 .
- the surface features may extend axially along the length of the pass through bore 60 .
- the surface features may be formed on the heat transfer fins 62 .
- the surface features may increase the surface area within the pass through bore 60 to promote increased heat transfer from the mounting post 50 to the air moving through the pass through bore 60 .
- Other heat transfer features of different sizes, shapes, and orientations may be positioned within pass through bore 60 .
- the heat transfer fins 62 may be arranged at different orientations such as in a helical orientation or may extend laterally across the width of the pass through bore 60 at spaced apart locations along the length of pass through bore 60 .
- the LED lights 16 which are mounted to the secondary PCBs 56 as shown in at least FIGS. 3 and 7-9 , generate heat that is directly passed through the secondary PCBs 56 and PCB fasteners 58 , and into the mounting post 50 . The heat then passes through the wall of the mounting post 50 and into the air positioned in the pass through bore 60 . The air circulating within the lens 20 in the space surrounding the mounting post assembly 14 , which has also been heated by the LED lights 16 , may further heat the mounting post 50 .
- the mounting post assembly 14 may be designed to enhance heat transfer directly from the LED lights 16 and from the air captured within the lens 20 , through the wall of the mounting post 50 and into the air held in pass through bore 60 .
- the air in pass through bore 60 may then move out of the LED strobe light 10 as part of a heat transfer system that lowers the temperature conditions within the LED strobe light 10 , such as the temperature of the LED lights 16 themselves.
- lower temperatures within the LED strobe light 10 may have a number of advantages related to operation of the LED light 16 .
- the connector seat 64 of the mounting post assembly 14 may include a plurality of threads or other connecting features for connection to the lens connector 22 .
- the base mounting portion 66 may extend through the control board 18 and into the center mount aperture 36 of the base 12 , as shown in FIG. 6 .
- the base mounting portion 66 may have a liquid-tight connection with the control board 18 and a liquid-tight connection with the base 12 at the center mount aperture 36 .
- the base mounting portion 66 may include a sealing structure such as, for example, an O-ring, step feature, or other sealing structure, which enhances the liquid-tight interface between the mounting post assembly 14 , the control board 18 , and base 12 .
- the control board 18 may include a plurality of PCB mounting apertures 90 and an opening 92 .
- the secondary PCBs 56 of the mounting post assembly 14 may include a plurality of PCB connectors 57 , which extend through the PCB mounting apertures 90 .
- the PCB connectors 57 may provide an electrical connection between circuitry of the mounting post assembly 14 and circuitry of the control board 18 .
- the opening 92 may be sized to receive the base mounting portion 66 .
- the opening 92 and pass through bore 60 are aligned with the center mount aperture 36 of the base 12 to permit flow communication from the base 12 to the mounting post assembly 14 (e.g., vi an air channel 24 as shown in FIG. 6 ).
- the lens 20 includes top and bottom ends 70 , 72 , a plurality of fastener openings 74 , an airflow opening 76 , and an interior 78 (see FIGS. 3 and 6 ).
- the airflow opening 76 is formed in a surface of the lens 20 along the top end 70 .
- the bottom end 72 fits within the lens seat 42 of the base 12 .
- the lens fasteners 44 extend through the fastener openings 74 and into the fastening openings 46 of the base 12 to provide a releasable connection of the lens 20 to the base 12 .
- the lens 20 encloses the mounting post assembly 14 , LED lights 16 , and control board 18 within the interior 78 between the lens 20 and base 12 (see FIG. 6 ).
- heat generated by the LED lights 16 is captured within the interior 78 of the lens 20 .
- the heated interior 78 creates an increased temperature environment for the LED lights 16 .
- Some of the heat collected in the interior 78 may increase the temperature of the lens 20 , the base 12 , the mounting post assembly 14 , and the control board 18 .
- the heat within base 12 , mounting post assembly 14 , and control board 18 and lens 20 may at least partially transferred into the air held within the air channel 24 and which passes out of the LED strobe light 10 . This transfer of heat away from the LED strobe light 10 may lower the temperature within interior 78 , which may have advantages in operation of the LED lights 16 as described above.
- the lens connector 22 may include a flange 80 , a protrusion 82 , and an opening 84 .
- the flange 80 may extend along an outer surface of the lens 20 adjacent to the airflow opening 76 .
- the flange 80 and protrusion 82 may provide a liquid-tight seal between the lens connector 22 and the lens 20 at the airflow opening 76 .
- the protrusion 82 may include, for example, threads or other connection features to provide a releasable connection with the mounting post assembly 14 .
- the protrusion 82 may extend into and connect with the connector seat 64 of the mounting post assembly 14 , as shown in FIG. 6 .
- a threaded connection may be formed between the protrusion 82 and the connector seat 64 .
- the lens connector 22 may also have a liquid-tight connection with the mounting post assembly 14 .
- the lens connector 22 may provide a liquid-tight connection between an outer surface of the lens 20 and the mounting post assembly 14 .
- the opening 84 may be aligned with the pass through bore 60 of the mounting post assembly 14 such that the air channel 24 extends continuously from the bottom side 32 of the base 12 to the top surface of the lens 20 , as shown in FIG. 6 .
- FIG. 6 shows an airflow path A passing through the LED strobe light 10 (e.g., through the air channel 24 ).
- the airflow path A begins at the lateral openings 38 along the peripheral edge 34 of the base 12 .
- the airflow path A moves along the bottom side 32 of the base 12 and into the center mount aperture 36 .
- Airflow path A continues along the air channel 24 , which includes the opening 92 in the control board 18 , the pass through bore 60 , and the opening 84 in lens connector 22 , and out through the airflow opening 76 of lens 20 .
- the entire airflow path A is arranged with a liquid-tight seal relative to the electronics of the LED strobe light 10 , which are positioned within the interior 78 when the LED strobe light 10 is assembled, as shown in FIG. 6 .
- the electronics of the LED strobe light 10 may be associated with the secondary PCBs 56 , the LED lights 16 , and the control board 18 .
- Air in the airflow path A typically moves in the direction of the arrows shown in FIG. 6 under natural convection forces. As the air held within the air channel 24 becomes heated upon transfer of heat through the wall of the mounting post 50 , the heated air naturally rises vertically out through the opening 84 in lens connector 22 . This movement of heated air in a vertical direction creates a low pressure environment that draws air through the lateral openings 38 and the center mount aperture 36 and into the air channel 24 . During operation of the LED strobe light 10 , air continually flows along the airflow path A to reduce the temperature of the mounting post 50 and thereby lower the temperature in the area of the LED lights 16 .
- lowering the temperature of the LED lights 16 and the area around the LED lights 16 may enable brighter modes of operation, including the rotational slower modes that produce large amounts of heat. Furthermore, lowering the temperature in LED lights 16 and the area around the LED lights 16 may increase an operating life of the LED light 16 , permit improved light output of the LED light 16 , and/or permit operation of the LEDs at higher power levels without sacrificing the LED performance as compared to other LED strobe lights in which no airflow or heat transfer features are included.
- FIG. 10 shows an alternative arrangement for the airflow path A.
- FIG. 10 shows the LED strobe light 10 mounted to a pipe 26 , which is a common mounting arrangement for elevating the LED strobe light 10 .
- the airflow path A begins at a bottom end of the pipe 26 , extends along the length of the pipe 26 , and passes into the air channel 24 via the center mount aperture 36 .
- LED strobe light 10 may take advantage of other airflow paths separate from those shown in FIGS. 1-10 or in combination with the arrangement shown in FIGS. 1-10 .
- a single lateral opening 38 may be formed in the base 12 along the peripheral edge 34 .
- a plurality of center mount apertures 36 may be formed in the base 12 and arranged in flow communication with the pass through bore 60 of the mounting post assembly 14 .
- the LED strobe light may include a plurality of air channels extending therethrough via, for example, a plurality of mounting post assemblies 14 , or other channels, pass through bores, airflow paths, etc., which may extend through the individual parts of the LED strobe light (e.g., the base, mounting post assembly, and lens) or through multiple features of the LED strobe light.
- One example method includes a method of assembling an LED strobe light.
- An example method of assembling an LED strobe light may include, for example, providing a lens, a base, a mounting post assembly, LED lights, and a control board. The method may also include forming a first hole in the base, a second hole in the lens, a third hole in the control board, and a pass through bore extending through the mounting post assembly.
- the method may include securing the control board and mounting post assembly to the base, securing the lens to the base and to the mounting post, mounting a plurality of LEDs to the mounting post assembly, and aligning the first, second and third holes with the pass through bore to create an airflow channel through the LED strobe light.
- the method may include providing a base, a lens mounted to the base, a mounting post assembly mounted to the base, and a plurality of LED lights positioned on the mounting post.
- the lens may enclose the mounting post and plurality of LED lights when the lens is mounted to the base.
- a control board may be interposed between the mounting post assembly and the base.
- the method may include providing an airflow channel through the base, mounting post, lens and control board.
- the method may further include transferring heat generated by the plurality of LED lights through a wall of the mounting post and into air held in the airflow channel. The heated air is moved through the airflow channel and out of the strobe light.
- the mounting post may include a pass through opening forming part of the airflow channel.
- a plurality of heat transfer fins may extend along the length of the pass through opening to increase a rate of heat transfer from the mounting post to the air in the airflow channel.
- the method may also include providing a liquid-tight seal between the airflow channel and the plurality of LED lights and other electronics of the LED strobe light.
- the method may include providing a natural convection flow of heated air through the LED strobe light along the length of the airflow channel.
- a further method relates to releasably mounting an LED strobe light to a support structure using a magnetic force.
- the LED strobe light may include a plurality of magnets positioned along a bottom side thereof.
- the magnets may be encapsulated or embedded within material from which the base is formed.
- the magnets may be embedded within polymeric material from which the base is formed.
- the magnets may be spaced apart a maximum distance from each other and may be positioned as close to an outer periphery of the base as possible to maximize a pull force applied by the magnets to the support structure.
- heat transfer features disclosed herein have been described with reference to an LED strobe light, an example of which is described in U.S. patent application Ser. No. 13/796,867, filed on 12 Mar. 2013, and entitled “LED Strobe Light,” which application is incorporated herein in its entirety by this reference, the heat transfer features may be used with other types of light fixtures such as, for example, strobe lights that utilize different light sources in place of LEDs.
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Abstract
Description
- This is a continuation of U.S. patent application Ser. No. 13/864,121 filed on 16 Apr. 2013, now pending, the disclosure of which is incorporated, in its entirety, by this reference.
- Strobe lights are well-known products. A number of technologies are possible for use in strobe lights. Gas discharge strobe lights find particular application for emergency vehicles, radio towers, photography, and entertainment venues. Such conventional strobe lights utilize incandescent or gas light sources. Incandescent and gas source strobe lights have relatively high energy consumption and short lifetimes, which result in higher maintenance costs. Gas discharge strobe lights may be more susceptible to breaking, may produce ozone due to high voltage requirements, and may produce ultraviolet light that breaks down many materials. Further, such strobe lights have complicated electronics used to maintain the flashing operation.
- Another type of strobe light uses high intensity discharge (HID) lamps. Light is produced by high intensity discharge lamps when an electric current arced between two closely spaced electrodes in a sealed quartz-glass or ceramic capsule, known as a discharge tube, arc tube, or burner, containing a vapor of metal and gas. Free electrons in the arc collide with the metal atoms in the vapor exciting electrons of the metal atoms to a higher energy state. When the excited electrons return to their original, lower energy level, electromagnetic radiation is emitted having a wavelength determined by the energy level of the electrons and the constituency of the vapor into the capsule. Compared to filament-type halogen lamps, HID lighting typically produces light more efficiently and with a color temperature more closely approximating that of sunlight. Unlike an incandescent lamp, an HID lamp does not immediately illuminate when power is supplied to the lamp. While initiating operation of an HID lamp takes considerable time, the time required to re-strike (restart) an extinguished lamp is typically longer, and commonly twice as long as the cold startup interval. For these and other reasons, strobe lights that use HID lamps are less desirable in many applications.
- It is common for strobe lights to generate large amounts of heat due to the high levels of energy required generate the bright, flashing light outputs. Heat can have detrimental effects on many types of light generating devices. Since most strobe lights include a cover or lens within which the light generating devices are housed, the heat is trapped in proximity to the light generating members, which further increases the operating temperatures of the strobe light.
- Opportunities exist for improving strobe light technologies that address these and other issues.
- As will be described in greater detail below, one aspect of the present disclosure relates to a strobe light having a base, a mounting post, a plurality of light emitting diode (LED) lights, a lens, and a channel. The mounting post extends vertically from the base. The plurality of LED lights are mounted around a periphery of the mounting post. The lens is connected to the base and covers the mounting post and the plurality of LED lights. The channel extends through the base, mounting post and lens. Air flowing through the channel transfers heat generated by the plurality of LED lights out of the strobe light.
- The channel may include a liquid-tight interface with the base, mounting post and lens. The strobe light may include a connector configured to connect the mounting post to the lens, and the channel may extend through the connector. The connector may extend through the lens and be threadably connected to the mounting post. The lens may include a bottom end and a top end, wherein the bottom end is releasably connected to the base, and the channel extends through the top end. The strobe light may include a plurality of fins extending radially into the channel. The plurality of fins may extend along a length of the mounting post. The base may include a plurality of side openings to permit airflow into the channel along a bottom side of the base. The strobe light may be oriented with the mounting post extending vertically upward from the base, and the channel may be open along a top surface of the lens. The base may include a plurality of magnets embedded in the base.
- Another aspect of the present disclosure relates to a strobe light, which includes a base, a mounting post, a plurality of light emitting diode (LED) lights, and a lens. The base includes a first hole extending vertically there through and at least one lateral hole. The mounting post is secured to the base and includes a pass through bore aligned with the first hole. The plurality of LED lights are positioned on the mounting post. The lens is releasably mounted to the base to enclose at least the plurality of LED lights. The lens includes a second hole aligned with the pass through bore. The at least one lateral hole, the first and second holes, and the pass through bore are arranged in flow communication with each other to provide a path for heat to exit the strobe light.
- The base may have a circular shape with top and bottom surfaces and a peripheral edge, wherein the first hole may extend through the base from the top surface to the bottom surface, and the at least one lateral hole may be positioned at the peripheral edge and in flow communication with the first hole along the bottom surface. The lens may be connected to the mounting post with a liquid-tight connection, and the mounting post may be connected to the base with a liquid-tight connection. The strobe light may include a plurality heat transfer fins extending into the pass through bore along a length of the pass through bore. The strobe light may include a connector extending through the second hole and into contact with the mounting post to connect the lens to the mounting post. The connector may include an opening providing a flow path from the pass through bore and out of the lens. The first hole may include a plurality of threads configured to threadably mount the base to a pipe mount.
- Another aspect of the present disclosure relates to a method of assembling a strobe light. The method includes providing a base, a lens, a mounting post, and a plurality of light emitting diode (LED) lights positioned on the mounting post, wherein the base includes a first hole, the lens includes a second hole, and the mounting posting includes a pass through bore. The method also includes securing the mounting post to the base, securing the lens to the base with the mounting post and plurality of LED lights enclosed in the lens, and aligning the first and second holes and the pass through bore with each other to create an airflow channel through the strobe light.
- The base may include at least one lateral opening positioned at a periphery of the base and being arranged in flow communication with the first hole to create a flow path for air from outside the strobe light to the airflow channel. The method may include connecting the lens to the mounting post with a connector, wherein a portion of the connector may extend through the second hole and into releasable connection with the mounting post. The method may include embedding a plurality of magnets in the base.
- A further aspect of the present disclosure relates to a method of transferring heat from a strobe light. The method includes providing a base, a lens mounted to the base, a mounting post mounted to the base, and a plurality of light members positioned on the mounting post, wherein the lens encloses the mounting post and plurality of light members. The method also includes providing an airflow channel through the base, mounting post, and lens, transferring heat generated by the plurality of light members through the mounting post into air held in the airflow channel, and moving the heated air through the airflow channel and out of the strobe light.
- The mounting post may include a pass through opening forming part of the airflow channel, and a plurality of heat transfer fins extending along a length of the pass through opening to increase a rate of heat transfer. The method may include providing a liquid-tight seal between the airflow channel and the plurality of light members. The plurality of light members may include a plurality of light emitting diode (LED) lights.
- Features from any of the above-mentioned embodiments may be used in combination with one another in accordance with the general principles described herein. These and other embodiments, features and advantages will be more fully understood upon reading the following detailed description in conjunction with the accompanying drawings and claims.
- The accompanying drawings illustrate a number of exemplary embodiments and are a part of the specification. Together with the following description, these drawings demonstrate and explain various principles of the instant disclosure.
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FIG. 1 is a top perspective view of an example LED strobe light in accordance with the present disclosure. -
FIG. 2 is a bottom perspective view of the LED strobe light ofFIG. 1 . -
FIG. 3 is an exploded perspective view of the LED strobe light ofFIG. 1 . -
FIG. 4 is a side view of the LED strobe light ofFIG. 1 . -
FIG. 5 is a bottom view of the LED strobe light ofFIG. 1 . -
FIG. 6 is a cross-sectional view of the LED strobe light ofFIG. 4 taken along cross-section indicators 6-6. -
FIG. 7 is a perspective view of a mounting post assembly and control board of the LED strobe light shown inFIG. 3 . -
FIG. 8 is a cross-sectional view of the mounting post assembly and control board shown inFIG. 7 . -
FIG. 9 is an exploded perspective view of the mounting post assembly and control board ofFIG. 7 . -
FIG. 10 is a cross-sectional view of the LED strobe light shown inFIG. 6 mounted to a support pipe. - Throughout the drawings, identical reference characters and descriptions indicate similar, but not necessarily identical, elements. While the exemplary embodiments described herein are susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, one of skill in the art will understand that the exemplary embodiments described herein are not intended to be limited to the particular forms disclosed. Rather, the instant disclosure covers all modifications, equivalents, and alternatives falling within the scope defined by the appended claims.
- As will be described in greater detail below, the present disclosure relates generally to strobe lights, and more particularly relates to strobe lights that include light-emitting diodes (LEDs) as the source of light. The LED strobe light may be programmed to create different light patterns. Some example light patterns include a 360° rotating light, a 360° strobe light, a solid light, and various flashing sequences.
- The strobe light may include a plurality of LEDs. The LEDs may be arranged circumferentially and face radially outward. Each LED may be individually controlled with the control system of the strobe light. Controlling the LEDs may include turning on and off the LEDs and varying an intensity of light emitted from the LEDs. Operating the LEDs generates heat. Some operations, such as rotational slower modes, produce large amounts of heat. The heat is typically trapped in the structure (e.g., mounting post) to which the LEDs are mounted and the enclosure defined between the lens and the base, which leads to higher operating temperatures for the LEDs. High operating temperatures are typically the most common reasons for failure and light loss in LEDs. The strobe light designs disclosed herein facilitate heat transfer away from the LEDs. Removing heat from the LEDs may permit the LED strobe light to be operated at higher power levels without sacrificing LED performance, useful life, and light output.
- The heat transfer features of the example LED strobe lights disclosed herein may include an air channel, which passes through portions of the LED strobe light. The air channel may be referred to as a chimney, a heat sink chimney, or a heat transfer chimney. The air channel may extend through the base, control board (e.g., main printed circuit board), LED mounting post, and lens to permit air to flow through the LED strobe light. Heat generated by the LEDs may pass into the air channel to heat the air held in the air channel. The heated air may move under natural convection forces out of the LED strobe light. In one example, the base includes inflow openings around its peripheral edge that permit an inflow of air into the base. The inflow of air passes through a post opening positioned centrally on the base, into a pass through bore extending through the control board and mounting post, and out through a hole formed in a top surface of the lens. Since the air held in the air channel rises when heated, natural convention forces may move the heated air out of the LED strobe light and draw unheated air into the air channel.
- The air channel may be sealed relative to the electrical components of the LED strobe light. A connector used to connect the lens directly to the mounting post may provide a liquid-tight connection between an outer surface of the lens and the mounting post. Further, the mounting post may have a liquid-tight connection with the control board and base, and the lens may be connected to the base with a liquid-tight connection. The electrical components of the LED probe light, which are enclosed between the base and the lens, may be sealed (e.g., waterproof) from the air channel. As such, the air channel may be exposed to environmental conditions, such as rain or snow, during use of the LED strobe light and the electrical components are protected from exposure to those environmental conditions.
- The LED strobe light may include features that accelerate heat transfer from the LEDs to the air held in the air channel. For example, the mounting post may include a plurality of heat transfer fins extending into the pass through bore. The pass through bore may includes a plurality of grooves, protrusions or other surface features formed on surfaces thereof (e.g., on surfaces of the heat transfer fins). The heat transfer fins and surface features may increase the surface area of the pass through bore, thereby increasing the rate of heat transfer.
- Another aspect of the present disclosure relates to the use of magnets in the base of the LED strobe light. The magnets may assist in releasably mounting the LED strobe light to a support structure such as a hood or cab of a vehicle. The magnets may be embedded in the base. For example, the magnets may be embedded in the polymeric (e.g., plastic) materials from which the base is formed. The magnets may be positioned at spaced apart locations along a bottom surface of the base. The magnets, when spaced as close to the peripheral edge of the base as possible, may provide a stronger pulling force because of the wider magnetic footprint of the base. The embedding of the magnets may provide a non-scratch, waterproof arrangement for the magnets on the base.
- Referring now to
FIGS. 1-9 , an exampleLED strobe light 10 is shown and described.FIGS. 1, 2 and 4-6 show theLED strobe light 10 fully assembled. The LED strobe light is shown inFIG. 3 in a partially exploded view. Portions of theLED strobe light 10 are shown inFIGS. 7-9 . TheLED strobe light 10 is shown inFIG. 10 mounted to a support pipe to provide an alternative mounting for and airflow path through theLED strobe light 10. - The
LED strobe light 10 includes abase 12, a mountingpost assembly 14, a plurality ofLED lights 16, acontrol board 18, alens 20, and alens connector 22, as shown inFIG. 3 . Thecontrol board 18 is mounted to the mountingpost assembly 14. The mountingpost assembly 14 is connected to thecontrol board 18 andbase 12. Thelens 20 is releasably connected to thebase 12 along a bottom end of thelens 20. The lens is also connected to the mountingpost assembly 14 at a top end of the lens 20 (seeFIG. 6 ). - The
lens 20 is connected to the mountingpost assembly 14 with thelens connector 22. An air channel may extend through the LED strobe light 10 from the top end of the lens 20 (e.g., at the lens connector 22) to the bottom side of the base 12 (seeFIG. 6 ). The air channel may also extend laterally from a peripheral edge of the base, along the bottom side of the base, and into a center mount aperture formed in the base. In another arrangement, the air channel extends through a mounting device, such as thepipe 26 shown inFIG. 10 , rather than extending laterally to the lateral openings along the peripheral edge of the base. - The
base 12 includes top andbottom sides peripheral edge 34, acenter mount aperture 36, a plurality oflateral openings 38, a plurality of embeddedmagnets 40, alens seat 42, a plurality oflens fasteners 44, a plurality offastener openings 46, and a mountingseat 48, as shown inFIGS. 3 and 6 . Thelateral openings 38 are formed along theperipheral edge 34 to provide access to thebottom side 32 of thebase 12. Thelateral openings 38 are in flow communication with thecenter mount aperture 36. Thecenter mount aperture 36 may be positioned centrally on thebase 12 and may extend along a central axis of thebase 12. Thecenter mount aperture 36 may include a plurality of threads. The threads ofcenter mount aperture 36 may be configured for mounting theLED strobe light 10 to a mounting device such as thepipe 26 shown inFIG. 10 . - The
magnets 40 may be positioned at various spaced apart positions along thebottom side 32 as shown inFIG. 5 . Themagnets 40 may have any desired shape and size. For example, themagnets 40 may have a cubical or cylindrical shape. Themagnets 40 may be positioned in pairs as shown inFIG. 5 at spaced apart locations around thecenter mount aperture 36. Themagnets 40 may be spaced apart a distance D1, D2 from magnets on an opposite side of the base, as shown inFIG. 5 . The distances D1, D2 may be maximized in order to maximize a pulling force and widen a pulling force footprint for thebase 12. Themagnets 40 may be embedded in material from which thebase 12 is formed. For example, thebase 12 may comprise a polymeric material such as molded plastic. - The
magnets 40 may be co-molded into the polymeric materials ofbase 12. In other arrangements, thebase 12 may include a plurality of recesses, grooves or chambers within which themagnets 40 are positioned and then secured in place using, for example, a fastener, adhesives, or a press-fit connection. A cover or film may be placed over themagnets 40 to protect themagnets 40 from corrosion and also provide a low abrasive or no scratch interface with the support structure to which the LED strobe light is mounted (e.g., a hood or cab of a vehicle). Themagnets 40 may be define at least in part a lower most surface of the base 12 as shown inFIG. 6 so that the magnets 40 (or at least the material within which themagnets 40 are embedded) contact the support surface. - The
lens seat 42 of thebase 12 is receptive of a bottom end of thelens 20, as shown inFIGS. 1, 2 and 6 . Thelens fasteners 44 extend through thelens 20 and into thefastener openings 46, as shown inFIG. 3 . Thelens fasteners 44 provide a releasable connection of thelens 20 to thebase 12. An interface between thelens 20 and the base 12 may provide a liquid-tight connection. In some examples, theLED strobe light 10 is maintained in a vertically upright position, such as the orientation shown inFIG. 4 . When in an upright position, any liquid applied to thelens 20 runs vertically downward and off of thebase 12 and is unable to pass through the interface between thelens 20 and the base 12 at thelens seat 42. If theLED strobe light 10 were operated in a horizontal or upside down orientation, additional sealing features may be used between thelens 20 andbase 12 to improve the liquid-tight connection there between. A sealing device such as an O-ring may be provided at an interface between thelens 20 andbase 12 to improve the liquid-tight connection. - The
mourning post assembly 14 is shown inFIGS. 3 and 7-9 including a mountingpost 50 having top and bottom ends 52, 54, a plurality of secondary printed circuit boards (PCBs) 56,PCB fasteners 58, and a pass throughbore 60. The mountingpost assembly 14 may also include a plurality ofheat transfer fins 62 extending into the pass throughbore 60, aconnector seat 64 positioned at thetop end 52, and abase mounting portion 66 at thebottom end 54. ThePCB fasteners 58 secure thesecondary PCBs 56 to the mountingpost 50 at spaced apart locations around an outer periphery of the mountingpost 50. Theheat transfer fins 62 may extend along a length of the mountingpost 50 and may be arranged at circumferentially spaced apart locations within the pass throughbore 60. - The pass through
bore 60 may include a plurality of recesses, protrusions or other surface features along surfaces of the pass throughbore 60. The surface features may extend axially along the length of the pass throughbore 60. The surface features may be formed on theheat transfer fins 62. The surface features may increase the surface area within the pass through bore 60 to promote increased heat transfer from the mountingpost 50 to the air moving through the pass throughbore 60. Other heat transfer features of different sizes, shapes, and orientations may be positioned within pass throughbore 60. Theheat transfer fins 62 may be arranged at different orientations such as in a helical orientation or may extend laterally across the width of the pass through bore 60 at spaced apart locations along the length of pass throughbore 60. - During use, the LED lights 16, which are mounted to the
secondary PCBs 56 as shown in at leastFIGS. 3 and 7-9 , generate heat that is directly passed through thesecondary PCBs 56 andPCB fasteners 58, and into the mountingpost 50. The heat then passes through the wall of the mountingpost 50 and into the air positioned in the pass throughbore 60. The air circulating within thelens 20 in the space surrounding the mountingpost assembly 14, which has also been heated by the LED lights 16, may further heat the mountingpost 50. - Generally, the mounting
post assembly 14 may be designed to enhance heat transfer directly from the LED lights 16 and from the air captured within thelens 20, through the wall of the mountingpost 50 and into the air held in pass throughbore 60. The air in pass throughbore 60 may then move out of theLED strobe light 10 as part of a heat transfer system that lowers the temperature conditions within theLED strobe light 10, such as the temperature of the LED lights 16 themselves. As discussed above, lower temperatures within theLED strobe light 10 may have a number of advantages related to operation of theLED light 16. - The
connector seat 64 of the mountingpost assembly 14 may include a plurality of threads or other connecting features for connection to thelens connector 22. Thebase mounting portion 66 may extend through thecontrol board 18 and into thecenter mount aperture 36 of thebase 12, as shown inFIG. 6 . Thebase mounting portion 66 may have a liquid-tight connection with thecontrol board 18 and a liquid-tight connection with the base 12 at thecenter mount aperture 36. Thebase mounting portion 66 may include a sealing structure such as, for example, an O-ring, step feature, or other sealing structure, which enhances the liquid-tight interface between the mountingpost assembly 14, thecontrol board 18, andbase 12. - The
control board 18 may include a plurality ofPCB mounting apertures 90 and anopening 92. Thesecondary PCBs 56 of the mountingpost assembly 14 may include a plurality ofPCB connectors 57, which extend through thePCB mounting apertures 90. ThePCB connectors 57 may provide an electrical connection between circuitry of the mountingpost assembly 14 and circuitry of thecontrol board 18. - The
opening 92 may be sized to receive thebase mounting portion 66. When the mountingpost assembly 14 is mounted to thebase 12, as shown inFIG. 6 , theopening 92 and pass through bore 60 are aligned with thecenter mount aperture 36 of the base 12 to permit flow communication from the base 12 to the mounting post assembly 14 (e.g., vi anair channel 24 as shown inFIG. 6 ). - The
lens 20 includes top and bottom ends 70, 72, a plurality offastener openings 74, anairflow opening 76, and an interior 78 (seeFIGS. 3 and 6 ). Theairflow opening 76 is formed in a surface of thelens 20 along thetop end 70. Thebottom end 72 fits within thelens seat 42 of thebase 12. Thelens fasteners 44 extend through thefastener openings 74 and into thefastening openings 46 of the base 12 to provide a releasable connection of thelens 20 to thebase 12. Thelens 20 encloses the mountingpost assembly 14, LED lights 16, and controlboard 18 within the interior 78 between thelens 20 and base 12 (seeFIG. 6 ). - During operation of the
LED strobe light 10, heat generated by the LED lights 16 is captured within theinterior 78 of thelens 20. Theheated interior 78 creates an increased temperature environment for the LED lights 16. Some of the heat collected in the interior 78 may increase the temperature of thelens 20, thebase 12, the mountingpost assembly 14, and thecontrol board 18. The heat withinbase 12, mountingpost assembly 14, and controlboard 18 andlens 20 may at least partially transferred into the air held within theair channel 24 and which passes out of theLED strobe light 10. This transfer of heat away from theLED strobe light 10 may lower the temperature withininterior 78, which may have advantages in operation of the LED lights 16 as described above. - The
lens connector 22 may include aflange 80, aprotrusion 82, and anopening 84. Theflange 80 may extend along an outer surface of thelens 20 adjacent to theairflow opening 76. Theflange 80 andprotrusion 82 may provide a liquid-tight seal between thelens connector 22 and thelens 20 at theairflow opening 76. Theprotrusion 82 may include, for example, threads or other connection features to provide a releasable connection with the mountingpost assembly 14. Theprotrusion 82 may extend into and connect with theconnector seat 64 of the mountingpost assembly 14, as shown inFIG. 6 . For example, a threaded connection may be formed between theprotrusion 82 and theconnector seat 64. Thelens connector 22 may also have a liquid-tight connection with the mountingpost assembly 14. Thelens connector 22 may provide a liquid-tight connection between an outer surface of thelens 20 and the mountingpost assembly 14. Theopening 84 may be aligned with the pass through bore 60 of the mountingpost assembly 14 such that theair channel 24 extends continuously from thebottom side 32 of the base 12 to the top surface of thelens 20, as shown inFIG. 6 . -
FIG. 6 shows an airflow path A passing through the LED strobe light 10 (e.g., through the air channel 24). The airflow path A begins at thelateral openings 38 along theperipheral edge 34 of thebase 12. The airflow path A moves along thebottom side 32 of thebase 12 and into thecenter mount aperture 36. Airflow path A continues along theair channel 24, which includes theopening 92 in thecontrol board 18, the pass throughbore 60, and theopening 84 inlens connector 22, and out through theairflow opening 76 oflens 20. The entire airflow path A is arranged with a liquid-tight seal relative to the electronics of theLED strobe light 10, which are positioned within the interior 78 when theLED strobe light 10 is assembled, as shown inFIG. 6 . The electronics of theLED strobe light 10 may be associated with thesecondary PCBs 56, the LED lights 16, and thecontrol board 18. - Air in the airflow path A typically moves in the direction of the arrows shown in
FIG. 6 under natural convection forces. As the air held within theair channel 24 becomes heated upon transfer of heat through the wall of the mountingpost 50, the heated air naturally rises vertically out through theopening 84 inlens connector 22. This movement of heated air in a vertical direction creates a low pressure environment that draws air through thelateral openings 38 and thecenter mount aperture 36 and into theair channel 24. During operation of theLED strobe light 10, air continually flows along the airflow path A to reduce the temperature of the mountingpost 50 and thereby lower the temperature in the area of the LED lights 16. As discussed above, lowering the temperature of the LED lights 16 and the area around the LED lights 16 may enable brighter modes of operation, including the rotational slower modes that produce large amounts of heat. Furthermore, lowering the temperature inLED lights 16 and the area around the LED lights 16 may increase an operating life of theLED light 16, permit improved light output of theLED light 16, and/or permit operation of the LEDs at higher power levels without sacrificing the LED performance as compared to other LED strobe lights in which no airflow or heat transfer features are included. -
FIG. 10 shows an alternative arrangement for the airflow path A.FIG. 10 shows theLED strobe light 10 mounted to apipe 26, which is a common mounting arrangement for elevating theLED strobe light 10. The airflow path A begins at a bottom end of thepipe 26, extends along the length of thepipe 26, and passes into theair channel 24 via thecenter mount aperture 36. - Other mounted arrangements for the
LED strobe light 10 may take advantage of other airflow paths separate from those shown inFIGS. 1-10 or in combination with the arrangement shown inFIGS. 1-10 . For example, a singlelateral opening 38 may be formed in thebase 12 along theperipheral edge 34. In other arrangements, a plurality ofcenter mount apertures 36 may be formed in thebase 12 and arranged in flow communication with the pass through bore 60 of the mountingpost assembly 14. The LED strobe light may include a plurality of air channels extending therethrough via, for example, a plurality of mountingpost assemblies 14, or other channels, pass through bores, airflow paths, etc., which may extend through the individual parts of the LED strobe light (e.g., the base, mounting post assembly, and lens) or through multiple features of the LED strobe light. - Various methods may be associated with the LED strobe lights disclosed herein. One example method includes a method of assembling an LED strobe light. An example method of assembling an LED strobe light may include, for example, providing a lens, a base, a mounting post assembly, LED lights, and a control board. The method may also include forming a first hole in the base, a second hole in the lens, a third hole in the control board, and a pass through bore extending through the mounting post assembly. The method may include securing the control board and mounting post assembly to the base, securing the lens to the base and to the mounting post, mounting a plurality of LEDs to the mounting post assembly, and aligning the first, second and third holes with the pass through bore to create an airflow channel through the LED strobe light.
- Another example relates to a method of transferring heat from a strobe light. The method may include providing a base, a lens mounted to the base, a mounting post assembly mounted to the base, and a plurality of LED lights positioned on the mounting post. The lens may enclose the mounting post and plurality of LED lights when the lens is mounted to the base. A control board may be interposed between the mounting post assembly and the base. The method may include providing an airflow channel through the base, mounting post, lens and control board. The method may further include transferring heat generated by the plurality of LED lights through a wall of the mounting post and into air held in the airflow channel. The heated air is moved through the airflow channel and out of the strobe light.
- The mounting post may include a pass through opening forming part of the airflow channel. A plurality of heat transfer fins may extend along the length of the pass through opening to increase a rate of heat transfer from the mounting post to the air in the airflow channel. The method may also include providing a liquid-tight seal between the airflow channel and the plurality of LED lights and other electronics of the LED strobe light. The method may include providing a natural convection flow of heated air through the LED strobe light along the length of the airflow channel.
- A further method relates to releasably mounting an LED strobe light to a support structure using a magnetic force. The LED strobe light may include a plurality of magnets positioned along a bottom side thereof. The magnets may be encapsulated or embedded within material from which the base is formed. For example, the magnets may be embedded within polymeric material from which the base is formed. The magnets may be spaced apart a maximum distance from each other and may be positioned as close to an outer periphery of the base as possible to maximize a pull force applied by the magnets to the support structure.
- While the heat transfer features disclosed herein have been described with reference to an LED strobe light, an example of which is described in U.S. patent application Ser. No. 13/796,867, filed on 12 Mar. 2013, and entitled “LED Strobe Light,” which application is incorporated herein in its entirety by this reference, the heat transfer features may be used with other types of light fixtures such as, for example, strobe lights that utilize different light sources in place of LEDs.
- The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the present systems and methods and their practical applications, to thereby enable others skilled in the art to best utilize the present systems and methods and various embodiments with various modifications as may be suited to the particular use contemplated.
- Unless otherwise noted, the terms “a” or “an,” as used in the specification and claims, are to be construed as meaning “at least one of.” In addition, for ease of use, the words “including” and “having,” as used in the specification and claims, are interchangeable with and have the same meaning as the word “comprising.”
Claims (25)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/145,599 US20160245499A1 (en) | 2013-04-16 | 2016-05-03 | Led strobe light with integrated magnet and heat sink chimney |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/864,121 US9328908B2 (en) | 2013-04-16 | 2013-04-16 | LED strobe light with integrated magnet and heat sink chimney |
US15/145,599 US20160245499A1 (en) | 2013-04-16 | 2016-05-03 | Led strobe light with integrated magnet and heat sink chimney |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/864,121 Continuation US9328908B2 (en) | 2013-04-16 | 2013-04-16 | LED strobe light with integrated magnet and heat sink chimney |
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US20160245499A1 true US20160245499A1 (en) | 2016-08-25 |
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US13/864,121 Expired - Fee Related US9328908B2 (en) | 2013-04-16 | 2013-04-16 | LED strobe light with integrated magnet and heat sink chimney |
US15/145,599 Abandoned US20160245499A1 (en) | 2013-04-16 | 2016-05-03 | Led strobe light with integrated magnet and heat sink chimney |
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US13/864,121 Expired - Fee Related US9328908B2 (en) | 2013-04-16 | 2013-04-16 | LED strobe light with integrated magnet and heat sink chimney |
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Also Published As
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US9328908B2 (en) | 2016-05-03 |
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