LED device and LED lamp

Abstract

The invention provides an LED device and an LED lamp. The LED device comprises: at least one LED assembly; the shell is arranged on the back side of the at least one LED assembly; the radiator is arranged in the shell and is arranged on the back side of the at least one LED assembly; the cooling assembly is arranged in the shell and comprises an air channel and an air entraining part arranged in the air channel; the discharging assembly is arranged in the shell and comprises a discharging cavity and at least one discharging opening. The discharge cavity of the LED device can communicate with the discharge cavity of an adjacent LED device, so that hot air is discharged to the outside from the discharge cavity of the LED device through the discharge cavity of the adjacent LED device without flowing through the radiator in the air channel of the adjacent LED device.

Description

Technical Field

[0001] The present invention generally relates to the technical field of LED lighting, and more particularly, to a micro light emitting diode (LED) device and an LED lamp including the LED device. Background Art

[0002] LED lighting has been used in the photography and film industries for over two decades. LED lamps include flat panels that provide a large amount of light, but cannot mimic the lighting quality of HID lamps that use parabolic reflectors. This is because of the differences in the inherent size and lumen density between the two. HID lamps have a powerful small arc that is closer to the light source than any LED lamp. The ratio between the size of the light source and the size of the reflector largely determines how narrow the light beam can be. A small light source allows for a small reflector. Increasing the size of the reflector can obtain a narrower light beam.

[0003] LED lamps with lower lumen density need to combine many LEDs together to have the same lumen level as a single HID lamp. To make these LEDs form a narrow light beam, they can be combined in a large cluster, which requires a very large reflector, or they can be arranged in several small clusters and have an equal number of corresponding small reflectors. Using LED lamps instead of HID lamps has the advantage of mixing different colors together to project almost any color, while each HID lamp has only one color. LED lamps also have the advantage of being able to be placed in a waterproof housing. HID lamps require air cooling of the bulb and have a high voltage that is not very compatible with wet locations.

[0004] However, the biggest problem with large LED lamps is that the LED devices near the top or center of the large array receive the hot air that has been inhaled by adjacent LED devices before, and any LED component needs to be cooled to operate properly and have a good service life. Therefore, there is a need for an LED lamp that can be scaled up to a very large size and has uniform cooling during use. Summary of the Invention

[0005] Embodiments of the present invention provide an LED device that can provide good heat dissipation ability and maintain uniform cooling of the LED components.

[0006] According to an aspect of the present invention, there is provided an LED device. The LED device includes: at least one LED component; a housing disposed on the back side of the at least one LED component; a heat sink disposed within the housing and on the back side of the at least one LED component; a cooling component disposed within the housing, the cooling component including an air passage and an air guiding member disposed within the air passage, the air passage including a first passage and a second passage radially extending outward from the first passage, the air guiding member being disposed within the first passage and configured to introduce air along the axial direction of the air passage toward the heat sink to carry away the heat generated by the heat sink, the second passage being adjacent to the heat sink and configured to allow the hot air from the heat sink to flow radially along the air passage; and a discharge component disposed within the housing and configured to receive the hot air from the second passage, the discharge component including a discharge chamber and at least one discharge port, the discharge chamber surrounding the air passage and communicating with the second passage of the air passage, the at least one discharge port being formed on the housing and communicating with the discharge chamber to discharge the hot air to the outside; wherein the discharge chamber of the LED device can communicate with the discharge chamber of an adjacent LED device, such that the hot air is discharged from the discharge chamber of the LED device to the outside via the discharge chamber of the adjacent LED device without flowing through the heat sink within the air passage of the adjacent LED device.

[0007] According to some embodiments of the present invention, the at least one discharge port is disposed at a certain distance from the heat sink and spaced apart from the second passage.

[0008] According to some embodiments of the present invention, the diameter of the second passage gradually increases in a direction away from the first passage.

[0009] According to some embodiments of the present invention, the discharge component includes 4 discharge ports uniformly distributed along the housing.

[0010] According to some embodiments of the present invention, each LED component includes: an LED circuit board; an LED array disposed on the LED circuit board; and an LED optical element surrounding the LED array and configured to reflect the light emitted by the LED array.

[0011] According to some embodiments of the present invention, the LED optical element includes a parabolic reflector.

[0012] According to some embodiments of the present invention, each LED component further includes a TIR lens configured to focus the light emitted by the LED array.

[0013] According to some embodiments of the present invention, each LED assembly further includes a Fresnel lens configured to focus the light emitted by the LED array.

[0014] According to some embodiments of the present invention, the Fresnel lens includes an incident light surface and an exit light surface. An exit light element is disposed on the exit light surface of the Fresnel lens, and the Fresnel lens covers a central portion of the exit light element.

[0015] According to some embodiments of the present invention, optical silica gel is disposed on the exit light surface of the Fresnel lens.

[0016] According to some embodiments of the present invention, the diameter of the Fresnel lens is greater than the diameter of the LED array.

[0017] According to some embodiments of the present invention, the Fresnel lens is formed by a 3D printing process or a CNC process.

[0018] According to some embodiments of the present invention, the LED device includes driving electronics disposed in the air channel and configured to drive the at least one LED assembly.

[0019] According to some embodiments of the present invention, the LED device further includes a waterproof cover configured to accommodate the driving electronics.

[0020] According to some embodiments of the present invention, the LED device further includes an optical cover configured to cover the at least one LED assembly, and the heat sink and the optical cover form a closed space for accommodating the at least one LED assembly.

[0021] According to some embodiments of the present invention, the CRI or TLCI of each LED in the LED array is at least 90.

[0022] According to some embodiments of the present invention, the LED array includes: a first LED sub-array; a second LED sub-array surrounding the first LED sub-array; and a third LED sub-array surrounding the second LED sub-array; wherein, the first LED sub-array, the second LED sub-array, and the third LED sub-array are respectively driven to emit light.

[0023] According to another aspect of the present invention, there is provided an LED luminaire. The LED luminaire includes: a bracket; and a plurality of LED devices, the LED devices being the LED devices according to any one of the above embodiments, and the plurality of LED devices are fixedly attached to the bracket adjacent to each other. Wherein, the discharge cavity of the LED device can communicate with the discharge cavity of an adjacent LED device, so that hot air is discharged from the discharge cavity of the LED device to the outside via the discharge cavity of the adjacent LED device, without flowing through the radiator in the air passage of the adjacent LED device.

[0024] According to another aspect of the present invention, there is provided an LED device. The LED device includes: at least one LED component; a housing disposed on the back side of the at least one LED component; a radiator disposed in the housing and on the back side of the at least one LED component; a cooling component disposed in the housing, the cooling component including an air passage and an air guiding member disposed in the air passage, the air passage including a first passage, a second passage and a third passage, the first passage being located on the back side of the at least one LED component, the third passage being located on the front side of the at least one LED component, and the second passage communicating the first passage and the third passage; wherein, the radiator is located in the second passage, and the air guiding member is configured to introduce air towards the radiator to take away the heat generated by the radiator.

[0025] According to some embodiments of the present invention, the cooling component includes a plurality of the third passages, and the plurality of third passages are arranged around the at least one LED component.

[0026] According to some embodiments of the present invention, the air guiding member introduces air from the first passage into the second passage to take away the heat generated by the radiator, and discharges the hot air from the radiator from the third passage.

[0027] According to some embodiments of the present invention, the air guiding member introduces air from the third passage into the second passage to take away the heat generated by the radiator, and discharges the hot air from the radiator from the first passage.

[0028] According to some embodiments of the present invention, each LED component includes: an LED circuit board; an LED array disposed on the LED circuit board; and an LED optical element surrounding the LED array and configured to reflect light emitted by the LED array.

[0029] According to some embodiments of the present invention, the LED optical element includes a parabolic reflector.

[0030] According to some embodiments of the present invention, each LED component further includes a TIR lens configured to focus the light emitted by the LED array.

[0031] According to some embodiments of the present invention, each LED component further includes a Fresnel lens configured to focus the light emitted by the LED array.

[0032] According to some embodiments of the present invention, the Fresnel lens includes an incident light surface and an exit light surface, and an exit light element is disposed on the exit light surface of the Fresnel lens, and the Fresnel lens covers a central portion of the exit light element.

[0033] According to some embodiments of the present invention, optical silica gel is disposed on the exit light surface of the Fresnel lens.

[0034] According to some embodiments of the present invention, the LED array includes: a first LED sub-array; a second LED sub-array surrounding the first LED sub-array; and a third LED sub-array surrounding the second LED sub-array; wherein, the first LED sub-array, the second LED sub-array, and the third LED sub-array are respectively driven to emit light.

[0035] According to another aspect of the present invention, there is provided an LED lamp. The LED lamp includes: a bracket; and a plurality of LED devices, the LED devices being the LED devices according to any one of the above embodiments, and the plurality of LED devices are fixedly attached to the bracket adjacent to each other.

[0036] According to an embodiment of the present invention, in the LED device, the discharge assembly includes a discharge chamber and at least one discharge port, the discharge chamber surrounds the air passage and communicates with the second passage of the air passage, and the at least one discharge port is formed on the housing and communicates with the discharge chamber to discharge hot air to the outside. With this arrangement, the discharge chamber of the LED device can communicate with the discharge chamber of an adjacent LED device, so that hot air is discharged to the outside from the discharge chamber of the LED device via the discharge chamber of the adjacent LED device, without flowing through the radiator in the air passage of the adjacent LED device.

[0037] According to an embodiment of the present invention, the cooling component includes an air channel and an air bleed component arranged in the air channel, the air channel includes a first channel, a second channel and a third channel, the first channel is located on the back side of the at least one LED component, the third channel is located on the front side of the at least one LED component, and the second channel connects the first channel and the third channel; wherein the heat sink is located in the second channel, and the air bleed component is configured to introduce air toward the heat sink to take away the heat generated by the heat sink, so that the hot air does not need to flow through the heat sink in the air channel of an adjacent LED device.

[0038] Therefore, the LED device of the present invention can achieve sufficient lumen by assembling a plurality of LED devices together, while providing good heat dissipation capability and maintaining uniform cooling of the LED assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and other aspects, features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0040] Figure 1 A schematic structural diagram of an LED device according to an embodiment of the present invention is shown;

[0041] Figure 2 Shows Figure 1 A rear view of the LED device;

[0042] Figure 3 Shows Figure 1 A front view of the LED device;

[0043] Figure 4A and Figure 4B A schematic structural diagram of an LED device according to another embodiment of the present invention is shown;

[0044] Figure 5 A schematic diagram showing the structure of an LED component of an LED device according to an embodiment of the present invention is shown;

[0045] Figure 6 A schematic structural diagram of an LED array according to an embodiment of the present invention is shown;

[0046] Figure 7 A perspective view of an LED lamp according to an embodiment of the present invention is shown;

[0047] Figure 8 Shows Figure 7 The rear view of the LED lamp in FIG.

[0048] Figure 9 A front view of an LED lamp according to an embodiment of the present invention is shown;

[0049] Figure 10 shows Figure 9 a rear view of the LED luminaire in Detailed embodiments

[0050] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that it is not intended to limit the present invention to the specific forms disclosed herein; on the contrary, the present invention is intended to be construed as covering various modifications, equivalents, and / or alternatives of the embodiments of the present invention. When describing the drawings, like reference numerals may be used to denote the elements shown.

[0051] In entertainment lighting and sports lighting, a narrow beam is very important. The problem is how to obtain sufficient lumens in a small area and not too large optical element while maintaining the cooling of the LED assembly. In large LED luminaires, the LED devices near the top or center of the large array receive the hot air that has been inhaled by the adjacent LED devices before. Therefore, an LED luminaire is needed that can be scaled up to a very large size and has uniform cooling during use.

[0052] To this end, an embodiment of the present invention provides an LED device, comprising: at least one LED assembly; a housing disposed on the back side of the at least one LED assembly; a heat sink disposed within the housing and on the back side of the at least one LED assembly; a cooling assembly disposed within the housing, the cooling assembly including an air passage and an air guiding member disposed within the air passage, the air passage including a first passage and a second passage radially extending outward from the first passage, the air guiding member being disposed within the first passage and configured to introduce air along the axial direction of the air passage toward the heat sink to carry away the heat of the heat sink, the second passage being adjacent to the heat sink and configured to allow the hot air from the heat sink to flow radially along the air passage; and a discharge assembly disposed within the housing and configured to receive the hot air from the second passage, the discharge assembly including a discharge chamber and at least one discharge port, the discharge chamber surrounding the air passage and communicating with the second passage of the air passage, and at least one discharge port being formed on the housing and communicating with the discharge chamber to discharge the hot air to the outside.

[0053] When a plurality of LED devices are assembled together, the discharge chamber of one LED device can communicate with the discharge chamber of an adjacent LED device, so that the hot air is discharged to the outside from the discharge chamber of one LED device via the discharge chamber of an adjacent LED device without flowing through the heat sink within the air passage of the adjacent LED device.

[0054] In order to make the above objects, features, and effects of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] Referring toFigures 1 to 3 , the LED device 100 includes at least one LED component 110, a cooling component 120, and an exhaust component 130. As an example, Figure 1 five LED components 110 are shown in. These LED components 110 are arranged in a plane and adjacent to each other. The cooling component 120 and the exhaust component 130 are arranged on the back side of these LED components 110, that is, on the side opposite to the light emitting direction of the LED components 110. A housing 101 is arranged on the back side of the LED components 110 and surrounds the LED components 110, and the cooling component 120 and the exhaust component 130 are arranged in the housing 101. A radiator 102 is arranged in the housing 101 and on the back side of the LED components 110 for dissipating the heat generated by the LED components 110. For example, the radiator 102 can be a pin-fin radiator.

[0056] The cooling component 120 can be arranged at the center of the back side of the LED components 110. The cooling component 120 includes an air channel 121 and an air guiding member 122 arranged in the air channel 121, such as a fan. The air channel 121 includes a first channel 1211 and a second channel 1212 radially extending outward from the first channel 1211. The first channel 1211 and the second channel 1212 can be perpendicular to the back side of the LED components 110 and the radiator 102. The first channel 1211 and the second channel 1212 are symmetric about their respective axes. The first channel 1211 can have a cylindrical shape, and the second channel 1212 can have a flared shape. The air guiding member 122 is arranged in the first channel 1211 and is configured to guide air along the axial direction of the air channel 121 to the radiator 102 to take away the heat generated by the radiator 102 and dissipate the heat of the radiator 102. The second channel 1212 is arranged adjacent to the radiator 102 and is configured to allow the hot air from the radiator 102 to flow outward along the radial direction of the air channel 121.

[0057] The exhaust component 130 surrounds the cooling component 120. Specifically, the exhaust component 130 includes an exhaust chamber 131 and at least one exhaust port 132. The exhaust chamber 131 surrounds the air channel 121 and communicates with the second channel 1212 of the air channel 121, and the exhaust port 132 is formed on the housing 101 and communicates with the exhaust chamber 131 to discharge the hot air to the outside.

[0058] More specifically, as Figure 1As shown, the discharge cavity 131 is formed by the housing 101, the sidewalls of the first channel 1211, and the sidewalls of the second channel 1212. The sidewalls of the second channel 1212 can be inclined at an angle of 45° to 60° with respect to the axis of the air channel 121, which enables the hot air to flow along the sidewalls of the second channel 1212 towards the peripheral edge 12121 of the second channel 1212. A gap 133 is formed between the peripheral edge 12121 of the second channel 1212 and the housing 101, and the hot air flows from the second channel 1212 into the discharge cavity 131 through the gap 133. The gap 133 can extend continuously or discontinuously around the peripheral edge 12121 of the second channel 1212.

[0059] When multiple LED devices 100 are assembled together, adjacent LED devices 100 are connected to each other, and the discharge cavity 132 of one LED device 100 (for example, the LED device 100 at the central position) is directly connected and communicated with the discharge cavity 132 of an adjacent LED device 100 (for example, the LED device 100 at the surrounding position). Therefore, the hot air discharged from the discharge cavity 132 of one LED device 100 can be discharged to the outside through the discharge cavity 132 of an adjacent LED device 100 without flowing through the radiator 102 in the air channel 121 of an adjacent LED device 100, thereby providing good heat dissipation ability and keeping the LED assembly 110 evenly cooled.

[0060] In some embodiments, the air guiding member 122 can be a fan, such as a small waterproof and almost silent fan. The air channel 121 has an inlet 1213, and the incoming air is sucked into the air channel 121 by the air guiding member 122 through the inlet 1213 and blown towards the radiator 102 along the arrow A. The incoming air cools the radiator 102 and becomes hot air, and the hot air enters the exhaust side of the second channel 1212 along the arrow B under the pressure difference inside and outside the LED device 100, and enters the discharge cavity 131 through the gap 133. Then, the hot air is discharged from the discharge cavity 131 to the outside through the discharge ports 132 arranged on all sides of the discharge cavity 131. The hot air can be discharged through the nearest discharge port 132 or / and the discharge ports 132 located on other sides of the discharge cavity 131. When the hot air is discharged through the discharge port 132 located on the opposite side of the discharge cavity 131, the only main obstacle for the hot air to move through the discharge cavity 131 will be the first channel 1211, and the first channel 1211 is relatively small, so it will not affect the flow of the hot air.

[0061] In some embodiments, the discharge ports 132 are arranged at a certain distance from the second channel 1212 and away from the radiator 102 in the axial direction of the air channel 121.

[0062] In some embodiments, the diameter of the second channel 1212 gradually increases in a direction away from the first channel 1211. That is to say, the second channel 1212 has a generally trumpet-shaped configuration. The closer to the radiator 102, the larger the diameter of the second channel 1212. With this arrangement, the hot air from the radiator 102 can flow radially outward along the air passage 121 to the outer peripheral edge 12121 of the second channel 1212.

[0063] In some embodiments, the discharge assembly 130 includes four discharge ports 132 evenly distributed around the housing 101. As Figure 2 shown, the LED device 100 has a square shape, and the housing 101 has a square shape. One discharge port 132 is provided on each of the four sides of the housing 101. In other embodiments, any other number of discharge ports 132 may be provided, such as two, three, etc. The discharge ports 132 may be evenly or unevenly distributed around the housing 101. The discharge ports 132 may have the same or different sizes or shapes.

[0064] In some embodiments, as Figure 3 shown, four LED assemblies 110 are shown. In other embodiments, any other number of LED assemblies 110 may be provided, such as two, three, five, six, etc. Each LED assembly 110 may be configured to emit light of the same or different colors.

[0065] Figure 4A and Figure 4BFIG. shows a schematic structural view of an LED device 200 according to another embodiment of the present invention. As shown in the figure, the LED device 200 includes at least one LED component 110 and a cooling component 210. These LED components 110 are arranged in a plane and adjacent to each other. The cooling component 210 is arranged on the back side of these LED components 110, that is, on the side opposite to the light emitting direction of the LED components 110. A housing 101 is arranged on the back side of the LED components 110 and surrounds the LED components 110. The cooling component 210 is disposed within the housing 101. The cooling component 210 includes an air passage 211 and an air guiding member 122 disposed within the air passage 211. The air passage 211 includes a first passage 2111, a second passage 2112, and a third passage 2113. The first passage 2111 is located on the back side of these LED components 110, and the third passage 2113 is located on the front side of these LED components 110. The first passage 2111 and the third passage 2113 are respectively connected to the outside, and the second passage 2112 connects the first passage 2111 and the third passage 2113. A heat sink 202 is located within the second passage 2112. The air guiding member 122 may be a fan, such as a small waterproof and almost silent fan, located within the first passage 2111 or the second passage 2112. The air guiding member 122 is configured to introduce air towards the heat sink 202 to carry away the heat generated by the heat sink 202. For example, the heat sink 202 may be a pin fin heat sink. The first passage 2111, the second passage 2112, and the third passage 2113 are symmetric about their respective axes. The first passage 2111, the second passage 2112, and the third passage 2113 may have a cylindrical shape. The first passage 2111 and the third passage 2113 are perpendicular to the back side of the LED components 110 and the heat sink 202.

[0066] In some embodiments, the cooling component 210 includes a plurality of third passages 2113, and the plurality of third passages 2113 are arranged around these LED components 110.

[0067] In some embodiments, as Figure 4A shown, the air guiding member 122 introduces external air from the third passage 2113 into the second passage 2112 to carry away the heat generated by the heat sink 202 and discharges the hot air from the heat sink 202 to the outside through the first passage 2111. That is, air is introduced from the front side of the LED components 110 through the third passage 2113 into the second passage 2112, exchanges heat with the heat sink 202 within the second passage 2112, and discharges the hot air generated after the heat exchange to the outside through the first passage 2111 on the back side of the LED components 110. With this arrangement, the hot air does not need to flow through the heat sink within the air passage of the adjacent LED device.

[0068] In some embodiments, as Figure 4BAs shown, the air intake component 122 introduces external air from the first channel 2111 into the second channel 2112 to carry away the heat generated by the radiator 202, and discharges the hot air from the radiator 202 through the third channel 2113 to the outside. That is to say, air is introduced from the back side of the LED assembly 110 through the first channel 2111 into the second channel 2112, exchanges heat with the radiator 202 in the second channel 2112, and discharges the hot air generated after heat exchange from the front side of the LED assembly 110 through the third channel 2113 to the outside. With this arrangement, the hot air does not need to flow through the radiator in the air channel of the adjacent LED device.

[0069] In some embodiments, as Figure 5 shown, each LED assembly 110 includes an LED circuit board 111, an LED array 112, and an LED optical element 113. The LED array 112 is arranged on the LED circuit board 111. The LED optical element 113 surrounds the LED array 112 and is configured to reflect the light from the LED array 112.

[0070] In some embodiments, the LED optical element 113 includes a parabolic reflector. The parabolic reflector can reflect the light from the LED array 112 towards the center of the light beam.

[0071] In some embodiments, the LED assembly 110 further includes a Fresnel lens 114, which is configured to focus the light from the LED array 112. In other embodiments, the LED assembly 110 further includes a TIR lens, which is configured to focus the light from the LED array 112.

[0072] In some embodiments, the Fresnel lens 114 includes a light incident surface and a light exiting surface. A light exiting element 115, such as a light exiting glass, is arranged on the light exiting surface of the Fresnel lens 114, and the Fresnel lens 114 covers the central portion of the light exiting element 115, such that the central portion of the light exiting element 115 presents a Fresnel lens effect.

[0073] In some embodiments, optical silicone is formed on the light exiting surface of the Fresnel lens 114 to enable the Fresnel lens 114 to be directly attached to the light exiting element 115. The optical silicone can minimize the optical exchange loss from air to solid / solid to air.

[0074] In some embodiments, the diameter of the Fresnel lens 114 is equal to the diameter of the LED array 112.

[0075] In some embodiments, the Fresnel lens 114 is formed by a 3D printing process or a CNC (Computer Numerical Control) process.

[0076] Still referring to Figure 5 , the emitted light 141 emitted by the LED array 112 is reflected by the LED optical element 113 and redirected to be parallel to the beam center. The Fresnel lens 114 covers a part of the center of the light-emitting element 115, and the emitted light 141 directly from the LED array 112 is slightly redirected parallel to the center of the beam by the Fresnel lens 114 and becomes parallel light 142. The Fresnel lens 114 allows most of the reflected light to pass through the light-emitting element 115, and the light directly from the LED array 112 near the beam center is more precisely focused on the beam center, which can tighten the beam angle without increasing the size or length of the LED optical element 113.

[0077] The LED optical element 113 can be a lens or a reflector. The lens can focus the beam slightly more tightly, but is slightly less efficient than the reflector. The reflector can form a tight beam, but to do this, the length and size of the reflector need to be increased to a very large size. The LED device of the present invention utilizes some un-redirected light that is not reflected by a reflector of normal size and uses the Fresnel lens 114 to guide this light to the tight central beam. The Fresnel lens 114 does not affect the light reflected by the LED optical element 113 because the Fresnel lens 114 is not present in the optical path of the reflected light. It only redirects the light directly from the LED array 112 to a position closer to the center of the light-emitting element 115. The diameter of the Fresnel lens 114 can be approximately equal to the diameter of the LED array 112. Even a small amount of light will exit at the periphery of the aperture and cannot be redirected, but this light is also on the exit optical path of the light reflected by the LED optical element 113. The Fresnel lens 114 can be formed by 3D printing or a CNC process, with optical silica gel between the Fresnel lens 114 and the light-emitting element 115, so that the Fresnel lens 114 is directly attached to the light-emitting element 115, which will reduce transmission losses and minimize other mechanical variations. Therefore, the LED device according to the present invention can tighten the beam generated by a reflector of average size by 5 degrees, increase the brightness of the central beam by nearly 20%, and only lose a few percent in total efficiency.

[0078] In some embodiments, the LED device 100 further includes driving electronics 103, which are arranged in the second channel 1212 of the air channel 121 and are configured to drive the LED assembly 110. The driving electronics 103 can drive the LED assembly 110 to emit light simultaneously or separately.

[0079] In some embodiments, the LED device 100 further includes a waterproof cover configured to accommodate the driving electronic device 103.

[0080] In some embodiments, the LED device 100 further includes an optical cover 104 configured to cover the LED assembly 110. The optical cover 104 may be made of transparent plastic. The heat sink 102 and the optical cover 104 form a sealed space for accommodating the LED assembly 110. Specifically, the front side of the heat sink 102, the LED circuit board 111, the LED array 112, the LED optical element 113, and the optical cover 104 are combined and sealed together to make the optical part of the LED device 100 waterproof. Water can penetrate the air guiding member 122, the air channel 121, the rear side of the heat sink 102, and the discharge chamber 131 without damaging the optical part of the LED device 100.

[0081] In some embodiments, as Figure 6 shown, each square represents an LED. The LED array 112 includes a first LED sub-array 1121, a second LED sub-array 1122, and a third LED sub-array 1123. The first LED sub-array 1121 includes a plurality of first LEDs 1, the second LED sub-array 1122 includes a plurality of second LEDs 2, and the third LED sub-array 1123 includes a plurality of third LEDs 3. The second LED sub-array 1122 surrounds the first LED array 1121, and the third LED sub-array 1123 surrounds the second LED array 1122. The first LED sub-array 1121, the second LED sub-array 1122, and the third LED sub-array 1123 are respectively driven to emit light. The first LED sub-array 1121, the second LED sub-array 1122, and the third LED sub-array 1123 may be made of multiple channels of LEDs of different colors, such as white, warm white, red, green, blue, stone gray, amber, purple, red-orange, royal blue, or any possible visible color. These channels can be cross-faded or dimmed so that when multiple channels are powered on, they can be combined to produce any desired visible color or saturation.

[0082] If only the LEDs in the first LED sub-array 1121 are powered, the narrowest beam will be formed. If only the LEDs in the second LED sub-array 1122 surrounding the first LED sub-array 1121 are powered, a slightly wider beam will be formed. If only the LEDs in the third LED array 1123 surrounding the second LED array 1122 are powered, the widest beam will be formed. It may be necessary to power multiple LED arrays at different levels to obtain a uniform light distribution from any beam angle.

[0083] The LEDs in the LED array can be of one color or multiple colors and can be controlled through multiple channels to produce almost any visible color. Then, the focusing element, whether it is the LED optic 113 or the Fresnel lens 114, can project this light as tightly as possible.

[0084] In some embodiments, the LED device can include four LED assemblies 110. This will make the optics or reflectors of each LED assembly shorter and smaller. The LED device will be thinner and lighter in weight. These LED arrays will be as small as possible to form as tight a beam as possible. Additional LEDs can be placed around the tighter LED structures, and these LEDs will be controlled individually to achieve an electronically controlled beam angle. By powering the central LEDs at a lower power and the peripheral LEDs, the beam can be widened in a solid-state manner. There are no moving parts or additional lenses, diffusion, or losses. The larger the array size, the wider the beam angle, and the smaller the array size, the narrower the beam angle. Ideally, the CRI (Color Rendering Index) or TLCI (Television Lighting Consistency Index) of the white LEDs used in these arrays is at least 90, as the CRI of HID bulbs is close to 60. Ideally, the color LEDs have sufficient diversity to combine to produce almost any visible color. The flicker level of the LEDs is also much lower than that of HIDs.

[0085] According to another aspect of the present invention, an LED luminaire 300, such as an entertainment luminaire, is provided. As Figure 7 and Figure 8 shown, the LED luminaire 300 includes a bracket (not shown) and a plurality of LED devices 100. These LED devices 100 are fixedly attached to the support frame adjacent to each other.

[0086] In some embodiments, for simplicity and clarity, nine LED devices 100 are shown, but any number of LED devices 100 can be used, such as 49, 64, or any number. The array shape does not have to be square and can also be rectangular. The LED devices 100 do not have to be square and can also have six sides or any number.

[0087] The emission cavity 132 of one LED device 100 (e.g., the LED device 100 at the central position) communicates with the emission cavities 132 of adjacent LED devices 100 (e.g., the LED devices 100 at the surrounding positions). The hot air discharged from the emission cavity 132 of one LED device 100 is discharged to the outside through the emission cavities 132 of the adjacent LED devices 100 without flowing through the radiator 102 in the second channel 1212 of the air channel 121 of the adjacent LED devices 100.

[0088] If multiple LED devices 100 are vertically assembled, the discharge ports 132 on the bottom side of the lowermost row of LED devices 100 can be blocked so that due to the pressure difference between the LED devices 100 and the outside, hot air will be discharged through the remaining discharge ports on the other three sides. This will prevent hot air from being re-sucked by the fan due to convection. Air is axially sucked into nine fans 122, and hot air is radially discharged from the top, left, and right. The fans 122 in the multiple LED devices 100 can rotate in the same direction and at the same speed. In some embodiments, the rotational speed of the air guiding member 122 in the LED device 100 at the center of the LED luminaire 200 is greater than the rotational speed of the air guiding member 112 in the LED device 100 on the periphery of the LED luminaire 200.

[0089] According to an embodiment of the present invention, the LED device axially sucks air from the back and radially discharges the heated hot air to the sides. The air inlet in each LED device will be driven by an air guiding member. The air guiding member blows air to the back of the LED assembly equipped with the LED array, lens, or reflector. The air cools these components. Multiple LED devices can be connected side by side vertically in a grid to form an entertainment luminaire. Each LED device will be able to suck fresh cold air from the back and radially discharge or discharge its heated air into the adjacent discharge cavity. Ideally, the shared discharge cavity is large enough to accommodate the exhaust of several adjacent devices, including their own generated exhaust. Due to the pressure difference between the LED device and the outside, the heated air is finally radially discharged by the outermost LED device.

[0090] Therefore, the LED device of the present invention can achieve sufficient lumens by assembling multiple LED devices, while providing good heat dissipation ability and maintaining uniform cooling of the LED assembly.

[0091] According to another aspect of the present invention, an LED luminaire 400, such as an entertainment luminaire, is provided. As Figure 9 and Figure 10 shown, the LED luminaire 400 includes a bracket (not shown) and multiple LED devices 200. These LED devices 200 are fixedly attached to the support frame adjacent to each other. Air is introduced into the second channel 2112 from the front side of the LED assembly 110 through the third channel 2113, exchanges heat with the radiator 202 in the second channel 2112, and discharges the hot air generated after heat exchange from the back side of the LED assembly 110 to the outside through the first channel 2111, or, air is introduced into the second channel 2112 from the back side of the LED assembly 110 through the first channel 2111, exchanges heat with the radiator 202 in the second channel 2112, and discharges the hot air generated after heat exchange from the front side of the LED assembly 110 to the outside through the third channel 2113. With this arrangement, hot air does not need to flow through the radiator in the air channels of adjacent LED devices.

[0092] It should be noted that relational terms such as "first" and "second" in this text are only used to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship or order between these entities or operations. In addition, the words "comprising", "having", "containing", and "including" and other similar forms are intended to have the same meaning and are open-ended, because one or more items following any of these words are not intended to exhaustively list such one or more items, or are not intended to be limited to the listed one or more items.

[0093] As used herein, unless otherwise expressly stated, the term "or" encompasses all possible combinations, unless infeasible. For example, if it is stipulated that a database may include A or B, then the database may include A or B, or A and B, unless otherwise expressly stipulated or infeasible. As a second example, if it is stipulated that a database may include A, B, or C, then the database may include A, or B, or C, or A and B, or A and C, or B and C, or A and B and C, unless otherwise expressly stipulated or infeasible.

[0094] In the foregoing specification, some embodiments have been described with reference to numerous specific details, which may vary according to different embodiments. Certain adjustments and modifications can be made to some of the described embodiments. By considering the description and practice of the present invention disclosed herein, other embodiments will be apparent to those skilled in the art. The present specification and embodiments are to be considered as illustrative only, and the true scope and spirit of the present invention are indicated by the appended claims. The sequence of steps shown in the figures is for illustrative purposes only and is not limited to any particular sequence of steps. Thus, those skilled in the art will understand that these steps can be performed in a different order while achieving the same method.

[0095] In the drawings and the specification, exemplary embodiments have been disclosed. However, many variations and modifications can be made to these embodiments. Therefore, although specific terms are used, they are for general and descriptive purposes only and not for purposes of limitation.

Claims

1. An LED device, characterized in that, Comprising: At least one LED component; A housing, disposed on the back side of the at least one LED component; A heat sink, disposed within the housing and on the back side of the at least one LED component; A cooling component, disposed within the housing, the cooling component including an air passage and an air guiding member disposed within the air passage, the air passage including a first passage and a second passage radially extending outward from the first passage, the air guiding member being disposed within the first passage and configured to introduce air along the axial direction of the air passage toward the heat sink to carry away the heat generated by the heat sink, the second passage being adjacent to the heat sink and configured to allow the hot air from the heat sink to flow radially along the air passage; And An exhaust component, disposed within the housing and configured to receive the hot air from the second passage, the exhaust component including an exhaust chamber and at least one exhaust port, the exhaust chamber surrounding the air passage and communicating with the second passage of the air passage, the at least one exhaust port being formed on the housing and communicating with the exhaust chamber to discharge the hot air to the outside; Wherein, the exhaust chamber of the LED device can communicate with the exhaust chamber of an adjacent LED device, such that the hot air is discharged to the outside from the exhaust chamber of the LED device via the exhaust chamber of the adjacent LED device without flowing through the heat sink within the air passage of the adjacent LED device.

2. The LED device according to claim 1, wherein The at least one exhaust port is disposed at a certain distance from the heat sink and spaced apart from the second passage.

3. The LED device according to claim 1, characterized in that, The diameter of the second passage gradually increases along the direction away from the first passage.

4. The LED device according to claim 1, characterized in that, The exhaust component includes 4 of the exhaust ports uniformly distributed along the housing.

5. The LED device according to any one of claims 1 to 4, characterized in that, Each LED component includes: An LED circuit board; An LED array, disposed on the LED circuit board; and An LED optical element, surrounding the LED array and configured to reflect the light emitted by the LED array.

6. The LED device according to claim 5, characterized in that, The LED optical element includes a parabolic reflector.

7. The LED device according to claim 5, wherein Each LED component further includes a TIR lens configured to focus the light emitted by the LED array.

8. The LED device according to claim 5, wherein, Each LED component further includes a Fresnel lens configured to focus the light emitted by the LED array.

9. The LED device according to claim 8, wherein, The Fresnel lens includes a light incident surface and a light exit surface, and a light exit element is disposed on the light exit surface of the Fresnel lens, and the Fresnel lens covers the central portion of the light exit element.

10. The LED device according to claim 9, wherein, Optical silica gel is provided on the light exit surface of the Fresnel lens.

11. The LED device according to claim 8, characterized in that, The diameter of the Fresnel lens is larger than the diameter of the LED array.

12. The LED device according to claim 8, characterized in that, The Fresnel lens is formed by a 3D printing process or a CNC process.

13. The LED device according to claim 5, wherein The LED device includes driving electronics, the driving electronics being disposed within the air passage and configured to drive the at least one LED component.

14. The LED device according to claim 13, wherein The LED device further includes a waterproof cover configured to accommodate the driving electronics.

15. The LED device according to claim 5, characterized in that, The LED device further includes an optical cover configured to cover the at least one LED component, and the heat sink and the optical cover form an enclosed space for accommodating the at least one LED component.

16. The LED device according to claim 5, characterized in that, The CRI or TLCI of each LED in the LED array is at least 90.

17. The LED device according to claim 5, characterized in that, The LED array includes: A first LED sub-array; A second LED sub-array surrounding the first LED sub-array; and A third LED sub-array surrounding the second LED sub-array; wherein the first LED sub-array, the second LED sub-array, and the third LED sub-array are respectively driven to emit light.

18. An LED lamp, characterized in that, Comprising: A bracket; And A plurality of LED devices according to any one of claims 1 to 17, wherein the plurality of LED devices are fixedly attached to the bracket adjacent to each other; wherein the discharge cavity of the LED device can communicate with the discharge cavity of an adjacent LED device, so that hot air is discharged from the discharge cavity of the LED device to the outside via the discharge cavity of the adjacent LED device, without flowing through the heat sink in the air passage of the adjacent LED device.

19. An LED device, characterized in that, Comprising: At least one LED component; A housing disposed on the back side of the at least one LED component; A heat sink disposed in the housing and on the back side of the at least one LED component; A cooling component disposed in the housing, the cooling component including an air passage and an air guiding member disposed in the air passage, the air passage including a first passage, a second passage, and a third passage, the first passage being located on the back side of the at least one LED component, the third passage being located on the front side of the at least one LED component, and the second passage communicating the first passage and the third passage; wherein the heat sink is located in the second passage, and the air guiding member is configured to introduce air toward the heat sink to take away the heat generated by the heat sink.

20. The LED device according to claim 19, characterized in that, The cooling component includes a plurality of the third passages disposed around the at least one LED component.

21. The LED device according to claim 20, characterized in that, The air guiding member introduces air from the first passage into the second passage to take away the heat generated by the heat sink, and discharges the hot air from the heat sink from the third passage.

22. The LED device according to claim 20, wherein, The air guiding member introduces air from the third passage into the second passage to take away the heat generated by the heat sink, and discharges the hot air from the heat sink from the first passage.

23. The LED device according to any one of claims 19 to 22, characterized in that, Each LED component includes: An LED circuit board; An LED array disposed on the LED circuit board; and An LED optical element surrounding the LED array and configured to reflect the light emitted by the LED array.

24. The LED device according to claim 23, wherein, The LED optical element includes a parabolic reflector.

25. The LED device according to claim 23, wherein, Each LED component further includes a TIR lens configured to focus the light emitted by the LED array.

26. The LED device according to claim 23, wherein, Each LED component further includes a Fresnel lens configured to focus the light emitted by the LED array.

27. The LED device according to claim 26, wherein The Fresnel lens includes a light incident surface and a light exiting surface. The light exiting element is disposed on the light exiting surface of the Fresnel lens, and the Fresnel lens covers a central portion of the light exiting element.

28. The LED device according to claim 27, wherein Optical silica gel is provided on the light exiting surface of the Fresnel lens.

29. The LED device according to claim 23, characterized in that, The LED array includes: a first LED sub-array; a second LED sub-array surrounding the first LED sub-array; and a third LED sub-array surrounding the second LED sub-array; wherein the first LED sub-array, the second LED sub-array, and the third LED sub-array are respectively driven to emit light.

30. An LED lamp, characterized in that, Comprising: a bracket; and a plurality of LED devices according to any one of claims 19 to 29, wherein the plurality of LED devices are fixedly attached to the bracket adjacent to each other.

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