WO2010069159A1 - Led反射灯 - Google Patents

Led反射灯 Download PDF

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Publication number
WO2010069159A1
WO2010069159A1 PCT/CN2009/070263 CN2009070263W WO2010069159A1 WO 2010069159 A1 WO2010069159 A1 WO 2010069159A1 CN 2009070263 W CN2009070263 W CN 2009070263W WO 2010069159 A1 WO2010069159 A1 WO 2010069159A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
led
light source
heat
reflector lamp
Prior art date
Application number
PCT/CN2009/070263
Other languages
English (en)
French (fr)
Inventor
胡安华
Original Assignee
马士科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 马士科技有限公司 filed Critical 马士科技有限公司
Priority to KR1020117016463A priority Critical patent/KR101312118B1/ko
Priority to SG2011044633A priority patent/SG172770A1/en
Publication of WO2010069159A1 publication Critical patent/WO2010069159A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • 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
    • F21V7/00—Reflectors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to the field of lighting fixtures. More specifically, the present invention relates to an LED reflector lamp used as a lighting fixture, which has high luminous efficiency and good heat dissipation. Background technique
  • LED As a solid-state light source with great development potential, LED has been paid more and more attention since its birth in the 1960s due to its long life, firm structure, low power consumption and flexible size.
  • Traditional high voltage halogen lamps are used in a variety of lighting applications.
  • the LED lamp itself generates a relatively large amount of heat during operation, thereby generating a large light decay and shortening the service life of the LED lamp, thereby limiting the application range of the LED lamp in the field of illumination to a certain extent.
  • the existing LED lamps for illumination are generally assembled with multiple LED light sources, and then a lampshade is installed to achieve the required brightness and power. .
  • the more LEDs are assembled, the higher the brightness and power of the LEDs produced. 1 shows an LED lamp for illumination in the prior art, wherein the LED lamp is uniformly mounted on the same panel 2 placed horizontally, wherein each LED light source is disposed in On the same level, then the lampshade is installed and then mounted on the ordinary lamp cap 3, which becomes a common PAR lamp sold in the market, as shown in Fig. 2.
  • the PAR lamp can meet the lighting requirements, it does not have a special heat conduction and heat dissipation device.
  • the heat generated by the multiple LED light sources cannot be effectively dissipated, so that the temperature of the lamp housing is relatively high. There is a danger of getting hot; in addition, the high temperature makes the lamp more susceptible to damage. In addition, because there is no concentrating element, the light emitted by each LED light source cannot be effectively concentrated, so that the utilization of emitted light is low, and to some extent, light is wasted.
  • the utility model patent number 200820101329.7 the LED street lamp disclosed in the utility model patent of the LED lamp, is also mounted on the panel which is horizontal to the vertical central axis of the outer casing, and the unit composed of the plurality of LED light sources and the lamp cover is mounted on the panel. Reassembled into street lamps for lighting, wherein each LED light source is also disposed on the same horizontal surface.
  • the LED street lamp disclosed in the utility model has some improvements in heat dissipation, it is designed such that the LED light source face faces outward, so most of the luminous flux emitted by the LED is directly projected onto the assumed working surface, thereby causing glare interference to people. And affect the human eye.
  • This type of luminaire also does not concentrate the light well, so the light efficiency of the lamp is also considerably affected.
  • the volume thereof must be quite large.
  • the luminous flux of the light emitted by the LED is about 90%-100% directly.
  • Projected on the hypothetical working surface there is a heat dissipation problem that shortens the life of the lamp.
  • Their illumination angles are also fixed at a certain angle, and cannot be replaced or adjusted as needed.
  • the disadvantage of this is that the LED light source faces out, which may cause glare interference to people, and because of people The vision of the eye can directly contact the LED light source, so the strong light emitted by the LED may cause damage to the human eye; in addition, the light emitted by the existing LED lamp is not substantially concentrated, so that the light effect of the lamp is considerably equivalent.
  • the impact of the illumination angle can not be adjusted and its scope of use is limited.
  • the object of the present invention is to overcome the above-mentioned shortcomings in the prior art, and to provide a novel LED reflector lamp, which has good thermal conductivity, heat dissipation and concentrating, and the illumination angle can be adjusted to solve the structure.
  • the human eye can directly contact the LED light source, preventing the glare from the LED from causing damage to the human eye.
  • the object of the present invention is to provide an LED reflector lamp, comprising the control circuit of the LED reflector lamp, further comprising:
  • At least two LED light sources the LED light source being controlled by the control circuit;
  • At least two light source panels the at least two LED light sources are respectively fixed on the at least two light source panels; at least one heat conducting panel, the at least two light source panels are respectively fixed in the heat conduction manner to the at least one heat conducting layer Board
  • a reflector having a reflective inner surface, a reflective opening formed by the reflective inner surface edge, and a groove formed at the bottom of the reflector, the heat conductive plate to which the LED light source and the light source panel are fixed is via a groove at the bottom of the reflector is inserted into the interior of the reflector such that the LED source is parallel to a central vertical axis of the reflector;
  • a heat sink having a cavity internally provided, the cavity being sized and shaped to engage the reflector and at least a portion of the thermally conductive plate.
  • the LED reflector lamp comprises:
  • Two light source panels wherein the two LED light sources are respectively fixed on the two light source panels;
  • the reflector is composed of two symmetrical semi-reflectors, the semi-reflectors are symmetrically disposed along a central vertical axis; and the reflective inner surface of the semi-reflector is parabolically extended.
  • a paraboloid is formed, wherein the center points of the two LED light sources are respectively located at the focus of the parabola of the paraboloids of the two semi-reflectors.
  • the luminous flux can be increased by about 5%-20%.
  • the LED reflector lamp of the present invention may further comprise a metal cap disposed on a central vertical axis of the reflector, the opposite sidewalls being provided with at least two notches corresponding to the thickness of the heat conducting plate, such that the heat conducting plate Connected to the gap.
  • the LED light source can be fixed on the light source panel by dispensing or by any mechanical means, and the light source panel and the heat conducting plate can pass fasteners, dispensing or adhesive heat dissipation oil. Fixed together.
  • a heat dissipation oil layer is coated between the light source panel and the heat conducting plate.
  • the reflector is designed in the shape of a horn, and the reflective inner surface of the reflector is plated with a reflective material.
  • the heat sink of the present invention may be a hollow cylinder whose inner surface is designed to be curved in engagement with the reflector so as to be in close contact with the outer surface of the reflector.
  • a plurality of fins parallel to and spaced apart from the central vertical axis of the reflector may be disposed on the outer surface of the heat sink to achieve a better heat dissipation effect.
  • one end of the heat sink may be provided with a plurality of ribs extending from the center of the heat sink to the side walls thereof, which function as reinforcing ribs on the one hand and heat dissipation on the other hand.
  • the LED light source may be disposed near the bottom of the reflector, or may be disposed adjacent to the reflector opening.
  • the light from the LED source is reflected by the inner surface of the reflector, which can change the angle of the beam reflected from the reflector.
  • the angle of reflection can be controlled to 10° - 60°.
  • the heat conducting plate of the present invention is disposed such that its central vertical axis overlaps with the central vertical axis of the reflector, and the tangent of the intersection of the central vertical axis of the heat conducting plate and the arc of the reflector
  • the central vertical axis of the heat conducting plate is perpendicular.
  • the heat conducting plate, the heat sink and the reflecting cup may be separate parts, or two or two of them may be integrally formed, or the three may be integrally formed.
  • the light source panel, the heat conducting plate, the heat sink and the reflector cup are preferably made of a heat conductive material such as aluminum, aluminum alloy or ceramic.
  • the LED reflector lamp of the present invention has a very high light efficiency and good condensing property, the reflector opening can be omitted from the reflector opening, and a reflector cover can be added as needed.
  • the LED reflector lamp of the invention closely contacts the LED chip light source panel and the heat conduction plate, and the heat conduction plate and the heat sink are connected together, thereby forming a good heat conduction and heat dissipation path, and the heat emitted by the LED light source passes through the light source panel.
  • the heat dissipation path of the heat sink and the heat sink is dissipated, which reduces the temperature of the LED light source.
  • the glass reflector is not provided with the glass reflector, and the LED light source can circulate with the air, which is beneficial to the heat dissipation, and can further reduce the heat generated when the LED emits light, thereby ensuring that the LED is not hot, thereby prolonging the life of the LED reflector lamp.
  • the problem of heat generation of high-power LED reflector lamps, together with the dense arrangement of multiple LEDs, is conducive to making LED reflector lamps with higher power.
  • the LED light source Since the LED light source is placed in the center of the reflector, the light from the LED can be refracted through the reflector, which has good concentrating properties. In addition, by changing the position of the LED light source, the angle of the beam refracted by the reflector can be changed, which is beneficial for more occasions.
  • the LED lighting lamp with lower power can achieve the same lighting effect as the current higher power LED lamp; and because the power is smaller, the heat generation of the LED is smaller, so the service life of the LED lamp can be Longer.
  • Figure 1 is a top plan view of an LED lamp of the prior art.
  • Figure 2 is a front elevational view of the LED luminaire shown in Figure 1.
  • Fig. 3 is a top perspective view showing the LED reflector lamp of the first embodiment of the present invention, wherein the LED reflector lamp has two light source panels.
  • Fig. 4 is a perspective view showing the bottom of the LED reflector lamp shown in Fig. 3.
  • Fig. 5 is a perspective exploded bottom view of the LED reflector lamp shown in Fig. 3.
  • Fig. 6 is a perspective exploded plan view showing the LED reflector lamp shown in Fig. 3.
  • Fig. 7 is a top perspective view of a LED reflector lamp according to a second embodiment of the present invention, wherein the LED reflector lamp has three light source panels.
  • Fig. 8 is a top perspective view of a LED reflector lamp according to a third embodiment of the present invention, wherein the LED reflector lamp has four light source panels.
  • FIG. 9 is a top perspective view of a LED reflector lamp according to a fourth embodiment of the present invention, wherein the reflector of the LED reflector lamp is composed of two semi-reflectors symmetrically disposed.
  • Fig. 10 is a perspective exploded bottom view of the LED reflector lamp shown in Fig. 9.
  • Fig. 11 is a perspective exploded plan view showing the LED reflector lamp shown in Fig. 9.
  • 12(A) and 12(B) are cross-sectional views showing the central vertical axis of the LED reflector lamp shown in Fig. 9. detailed description
  • the reflector lamp 100 includes two LED light sources 60, two light source panels 20, a heat conducting plate 10, and heat dissipation.
  • the control circuit can be selectively formed as a heat sink integrated with the LED reflector lamp on the outer surface of the heat sink, or can be formed separately from the LED with a plug-in connector for connection with the LED reflector lamp.
  • the control circuit is not the gist of the present invention and will not be described in detail herein.
  • the LED light source can be constructed from one or more LEDs.
  • the two LED light sources 60 are each composed of three chip LEDs and are respectively fixed on the two light source panels 20.
  • the LED light source 60 and the light source panel 20 can be glued together or fixed in any known mechanical manner.
  • Each of the light source panels 20 is provided with screw holes 22, 24, and the light source panel 20 is fixed to the heat conducting plate 10 by screws.
  • a layer of heat-dissipating oil may be applied between the light source panel 20 and the heat-conducting plate 10 to provide better heat conduction.
  • the light source panel 20 can be fixed on the heat conducting plate 10 by any other means known in the art, and it is preferable to form a good heat conduction and heat dissipation effect.
  • the heat absorbing oil with strong viscosity can be directly used.
  • the light source panel 20 is bonded to the heat conducting plate 10.
  • the heat conducting plate 10 has a semicircular plate shape, and is provided with a notch 12 and a screw hole 14 at positions corresponding to the screw holes 22, 24 of the light source panel 20, respectively.
  • Two light source panels 20 are placed on both sides of the heat conducting plate 10, and the screw holes 22, 24 of the light source panel 20 are respectively aligned with the notches 12 and the screw holes 14 of the heat conducting plate 10, and the two light source panels can be screwed. 20 is locked on both sides of the heat conducting plate 10.
  • a layer of heat dissipating oil may be applied to the contact surface between the light source panel 20 and the heat conducting plate 10 before being locked.
  • the heat sink 50 is annular, and the heat conducting plate 10 is disposed in the inner cavity of the heat sink 50 and overlaps the central vertical axis of the heat sink.
  • the heat sink 50 and the heat conducting plate 10 are integrally formed. Of course, the two can also be connected together by pluggable to form a good thermal contact.
  • the outer end portion of the heat sink 50 has a plurality of ribs 54 extending from the center of the end portion to the side wall of the radiator. These ribs 54 can serve as reinforcing ribs and help For heat dissipation.
  • the inner surface of the heat sink 50 is designed to be curved in engagement with the outer surface of the reflector 30 so as to abut against the outer surface 36 of the reflector 30 to facilitate dissipation of heat through the reflector 30.
  • a plurality of fins 52 are arranged on the outer surface of the heat sink 50 in parallel with and spaced apart from the center vertical axis. The heat sinks 52 can also dissipate the heat transferred from the heat conducting plate 10 to reach a good level. Better heat dissipation.
  • the reflector cup 30 has a parabolic reflective inner surface 32, a reflective opening formed by the edge of the reflective inner surface 32, and a through slot 34 formed in the bottom of the reflector.
  • Reflector cup 30 is designed in the shape of a horn, the bottom diameter is smaller, the more open The larger the diameter at the mouth, the more characteristic of the PAR lamp, and the higher the light efficiency and the better the condensing power.
  • the reflective inner surface 32 of the reflector 30 is a smooth curved surface that can be coated with a bright reflective material to increase light efficiency. Light from the LED source 60 is reflected onto the reflective inner surface 32 of the reflector. It is then refracted through the reflective opening.
  • the glass reflection mask is not disposed at the reflection opening, so that the chip LED can be connected to the atmosphere, which is more favorable for heat dissipation, thereby further reducing the heat generated when the LED emits light.
  • the shape and size of the through groove 34 is such that the heat conducting plate 10 to which the LED light source 60 and the light source panel 20 are fixed is inserted into the reflecting cup through the through groove 34, so that the LED light source 60 is parallel to the central vertical axis of the reflecting cup 30. .
  • the heat conducting plate 10 is disposed such that its central vertical axis overlaps the central vertical axis of the reflector cup 30, and the tangent of the central vertical axis of the heat conducting plate 10 and the intersection of the arc of the reflector cup 30 and the center of the heat conducting plate 10
  • the vertical axis is vertical.
  • the three chip LEDs arranged on each of the light source panels 20 are disposed on the same vertical plane, and the light emitted by them can be uniformly reflected on the reflective inner surface 32 of the reflector, and the refracted light can be Gather effectively to achieve illumination brightness.
  • the light source panel 20 can be designed such that the LED light source 60 is closer to the bottom through-groove 34 of the reflector 30, or can be designed to be closer to the reflective opening of the reflector.
  • the LED light source 60 is closer to the bottom through-groove 34 of the reflector 30, or can be designed to be closer to the reflective opening of the reflector.
  • changing the position of the LED light source 60 at the reflector can change the angle of the beam reflected by the reflector 30, thereby being adjustable.
  • the angle of light illumination of the LED reflector This is in contrast to prior art LED luminaires that control the beam angle by means of a reflector.
  • the beam angle of the LED reflector lamp of the present invention can be controlled to a range of 10 to 60 degrees.
  • the metal cap 40 is a hollow cylinder which is open at one end and closed at the other end, and has a notch 42 on opposite sides thereof. The size of the notch matches the thickness of the heat conducting plate 10, so that the metal cap 40 can be directly fastened to the heat conducting plate 10. Since the metal cap 40 is also located at the central axis position of the reflector cup 30, it can block the light emitted from the LED light source 60 located directly under the metal cap 40 via the central position of the reflector cup, so that the human eye does not directly see the LED light source directly. The light emitted helps protect the human eye.
  • the top end of the closed end of the metal cap 40 can be made in a green fluorescent design for use as an LED reflector lamp for identifying the present invention.
  • the heat conducting plate 10, the heat sink 50 and the reflector cup 30 can be three separate parts that are fixed together by plugging to form a good thermal contact.
  • the three portions may also be integrally formed in two, that is, the heat conducting plate 10 and the heat sink 50 are integrally formed, or the heat conducting plate 10 and the reflecting cup 30 are integrally formed, or the heat sink 50 and the reflecting cup 30 are integrally formed.
  • the heat conducting plate 10, the heat sink 50 and the reflector cup 30 can also be integrally formed.
  • the light source panel 20, the heat conducting plate 10, the heat sink 50, and the reflector cup 30 are preferably made of a thermally conductive material such as aluminum, aluminum alloy or ceramic.
  • FIG. 7 is a perspective view of an LED reflector lamp according to a second embodiment of the present invention.
  • This embodiment is basically the same as the structure of the first embodiment, and the main difference is that the number of the light source panels 220 is three, correspondingly, the LED light source 260 There are also three, each LED light source is respectively fixed on a light source panel; the heat conducting plate 210 is formed in a triangular shape, including a central column surrounded by three side planes 214 and three heat conducting partition plates 212 extending from the center column. And three light source panels 220 are respectively fixed on the three side planes 214 separated by the three heat conduction plates 212.
  • the metal cap 240 is correspondingly provided with three notches to snap at the junction of the three side faces 214 of the heat conducting plate 210.
  • the structure of the heat sink 250 is substantially the same as that of the first embodiment. In this embodiment, since one LED chip light source is added, an LED reflector lamp having a larger power can be obtained.
  • Fig. 8 is a perspective view showing the LED reflector lamp of the third embodiment of the present invention.
  • This embodiment is basically the same as the structure of the first embodiment. The main difference is that the number of the light source panels 320 of the embodiment is four, and the corresponding LED light sources 360 are also four; the heat conducting board 310 includes four The side planes 314 enclose a central column in the shape of a quadrangle, and the four light source panels 320 are respectively fixed to the four side planes 314.
  • the metal cap 340 is correspondingly provided with four notches to be fastened to the joints of the four side faces 314 of the heat conducting plate 310.
  • this embodiment adds an LED light source, so that the power of the LED reflector lamp can be made larger.
  • the LED retroreflective lamp 400 of the present embodiment is substantially identical in structure to the first embodiment, and includes two LED light sources 460, two light source panels 420, a heat conducting plate 410, a heat sink 450, and a control circuit for controlling the LED light source.
  • the reflector cup 430 of the present embodiment is composed of two semi-reflectors 431, 432 of the same shape and the same size.
  • the two semi-reflectors 431, 432 are combined to form a horn shape.
  • the two semi-reflectors 431, 432 are symmetrically disposed along a central vertical axis and are formed with an open slot 434.
  • the opening groove 434 is shaped and sized such that the heat conducting plate 410 to which the LED light source 460 and the light source panel 420 are attached is inserted into the opening groove 434 as shown in FIG.
  • the LED reflector lamp 400 of this embodiment is characterized in that: the reflective inner surface of the semi-reflectors 431, 432 is a paraboloid formed by a parabola extension, and the center points of the two LED light sources 460 are respectively located in the two semi-reflections.
  • the focus of the parabola of the body is on the focus.
  • the focal points of the paraboloids of the two semi-reflectors 431, 432 coincide with the center points of the two LED light sources 460, respectively.
  • the luminous flux of the LED reflector lamp of the present embodiment can be increased by 5%-20% compared to the existing LED lamp.
  • the inner reflective surface of the semi-reflective bodies 431, 432 is a smooth paraboloid, and the bright reflective material can be plated to further improve the light efficiency.
  • the inner reflecting surface of the semi-reflectors 431, 432 can also be of any shape that is capable of producing a concentrating effect, as will be apparent to those skilled in the art.
  • the light source panel fixed with the LED light source is closely attached to the heat conducting plate, and the heat conducting plate forms a heat conduction connection with the heat sink, thereby forming a good light source panel, a heat conducting plate and a heat sink for heat conduction and heat dissipation.
  • the heat emitted by the LED light source is quickly dissipated through the heat dissipation path, reducing the LED light source The temperature thus effectively solves the heat dissipation problem of the LED lamp.
  • the reflector is provided with an opening, which is more conducive to the dissipation of heat. Since the LED light source is mounted at the center of the reflector in a manner parallel to the central vertical axis of the reflector, the light emitted by the LED can be refracted through the inner surface of the reflector to form a good condensing property.
  • the LED reflector lamp of the present invention has better condensing power and higher luminous flux.
  • the number of LED light sources and light source panels can be increased by merely changing the design of the LED heat conducting plate, so the present invention can be made into a series of high-power LED reflecting lamps.
  • the LED light source When the LED light source is placed closer to the bottom of the reflector, the light source emits a small angle of refraction; when the LED light source is placed closer to the reflective opening of the reflector, the light emitted by the LED source has a larger angle of refraction. In this way, the illumination angle of the LED reflector can be adjusted to suit a wider range of applications.
  • the number of LED light sources can be more than two, such as three or four, or even more, so that it can be made into a reflector lamp with a higher power, which is suitable for a wider range of fields.
  • the present invention provides an LED reflector lamp which not only effectively solves the heat dissipation problem of the high power LED, but also greatly improves the luminous flux and luminous efficiency of the LED.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

LED反射灯 技术领域
本发明涉及照明灯具领域。 更具体地说， 本发明涉及一种用作照明灯具的 LED反射灯， 该 LED反射灯的发光效率高， 散热良好。 背景技术
LED 作为一种具有巨大发展潜力的固体发光光源， 自 20世纪 60年代诞生以来， 以其寿 命长、 结构牢固、 低功耗和外形尺寸灵活等优点受到人们越来越多的关注， 已经逐渐取代传 统的高压卤素灯应用在各种照明领域。 但是， LED灯本身在工作时的发热量比较大， 由此产 生了较大的光衰， 同时也缩短了 LED灯的使用寿命， 故在一定程度上限制了 LED灯在照明 领域的应用范围。
由于单个的 LED光源的亮度和功率不足， 不能当作照明使用， 故现有的照明用的 LED 灯一般都组装了多个 LED光源，然后加装上灯罩， 以达致所要求的亮度和功率。组装的 LED 光源的个数越多，所制成的 LED灯的亮度和功率也就会越高。图 1所示为现有技术中的照明 用的 LED灯，所述的 LED灯是把多个 LED光源 1均匀地安装在水平放置的同一块面板 2上， 其中， 每一个 LED光源都设置在同一水平面上， 然后装上灯罩， 再安装在普通的灯头 3上， 即成为市面上销售的普通 PAR灯， 如图 2所示。 这种 PAR灯虽然能够达到照明要求， 但它 没有设置专门的导热和散热装置， 因此， 由多个 LED光源产生的热量不能有效地散发掉， 使 得灯的外壳的温度会比较高， 人一接触就会有烫手的危险； 再者， 温度高也使灯比较容易损 坏。 此外， 因为没有聚光元件， 由各个 LED光源发出的光不能有效地予以聚集， 使得发出的 光的利用率偏低， 在一定程度上也造成了光浪费。
又例如中国实用新型专利号 200820101329.7，名称为 LED灯具的实用新型专利中所公开 的 LED路灯， 其也是将若干个 LED光源与灯罩组成的单元安装在与外壳的垂直中轴线成水 平的面板上， 再组装成照明用的路灯， 其中， 每一个 LED光源也是设置在同一水平面上。 该 实用新型公开的 LED路灯虽然在散热方面作了一些改进， 但是它在设计上是 LED光源面朝 向外，故 LED发出的光通量大部分直接投射到假定的工作面上， 因而对人产生眩光干扰并且 影响到人眼。 这种灯具也不能把光线很好地予以聚集， 故该灯的光效也受到相当的影响。 另 夕卜， 这种灯具如果要制成具有大功率， 由于全部 LED都水平地放置在一个平面上， 故其体积 必然相当大。
所以，根据现有技术组装而成的 LED灯中， LED发出的光的光通量约 90%-100%都直接 投射在假定的工作面上， 存在散热问题， 缩短了灯的使用寿命。 它们的照射角度也固定在某 一个确定的角度， 并不能根据需要进行更换或者调整， 由此带来的不足之处在于， 由于 LED 光源面朝外， 因而可能对人产生眩光干扰， 并且由于人眼的视觉可以直接接触到 LED光源， 因而 LED发出的强光有可能对人眼造成伤害； 再者， 现有 LED灯发出的光基本上没有经过 很好的聚集， 使灯的光效受到相当的影响； 而照射角度的不可以调整也限制了其使用范围， 故这种 LED灯不能大范围地予以推广应用。 因此， 有必要对现有的用作照明目的的 LED灯 具加以改良， 一方面改善其导热性， 从而能够很好地解决大功率 LED灯具的散热问题， 提高 发光效率； 另一方面可调整其照明角度并且提高其聚光性， 既避免对人产生眩光干扰和可能 对人造成的伤害， 又可以提高发光效率和增加光通量。 发明内容
本发明的目的在于克服现有技术中的上述缺点， 提供一种新颖的 LED反射灯， 该 LED 反射灯具有良好导热性、 散热性和聚光性， 而且照射角度可加以调整， 从结构上解决了人眼 可以直接接触到 LED光源的问题， 防止了 LED发出的强光对人眼有可能造成的伤害。
本发明的目的是通过以下技术方案实现的， 提供一种 LED反射灯， 包括所述 LED反射 灯的控制电路， 还包括：
至少两个 LED光源， 所述 LED光源由所述控制电路控制；
至少两块光源面板， 所述至少两个 LED光源分别固定在所述至少两块光源面板上； 至少一块导热板， 所述至少两块光源面板以可导热方式分别固接在所述至少一块导热板 上；
反光杯， 所述反光杯具有反射内表面、 由所述的反射内表面边缘构成的反射开口以及在 所述反光杯底部形成的槽，所述的固接有 LED光源和光源面板的导热板经由所述反光杯底部 的槽插入到所述反光杯的内部， 以致于所述的 LED光源与所述反光杯的中心垂直轴线平行； 以及
散热器， 所述散热器内部设有空腔， 所述空腔的尺寸和形状设计成与所述反光杯以及所 述导热板的至少一部分结合。
在本发明一优选实施例中， 所述 LED反射灯包括：
两个 LED光源；
两块光源面板， 所述两个 LED光源分别固定在所述两块光源面板上； 以及
一块导热板， 所述两块光源面板以可导热方式分别固定在所述导热板的两侧； 其中所述散热器呈环状， 其内表面做成与所述反光杯的外表面紧贴在一起。 在本发明另一优选实施例中， 所述反光杯由两个对称的半反射体组成， 所述半反射体沿 中心垂直轴线对称地设置； 所述半反射体的反射内表面为拋物线延伸形成的抛物面， 其中所 述两个 LED光源的中心点分别位于所述两个半反射体的抛物面的拋物线的焦点上。这样的设 计使得 LED发出的光都经所述半反射体的内抛物面反射， 达到更好的聚光效果， 因此 LED 反射灯具有更高的光通量。
已证明，把 LED光源设置在反光杯的反射内表面所在的拋物线的焦点位置上，其光通量 可以提高大约 5%-20%。
本发明的 LED反射灯还可以包括设置在所述反光杯的中心垂直轴线上的金属帽，其相对 两侧壁设有至少两个与所述导热板厚度相符的缺口， 使得所述导热板卡接在所述缺口中。
根据本发明， 可以点胶方式或采用任何机械方式把所述 LED 光源固定在所述光源面板 上， 而所述光源面板与所述导热板可通过紧固件、 点胶或有粘性的散热油固定在一起。 较佳 地， 所述光源面板与所述导热板之间涂有散热油层。
较佳地， 反光杯设计成喇叭形状， 而且所述反光杯的反射内表面镀有反光材料。
本发明的散热器可以是空心的圆柱， 其内表面设计成与所述反光杯相配合的弧形， 从而 紧贴在反光杯的外表面。 在所述散热器的外表面可以设有多条与所述反光杯的中心垂直轴线 平行且间隔排列的散热片， 以达到更好的散热效果。 另外， 散热器的一端可设有多条从所述 散热器的中心延伸至其侧壁的筋条， 一方面起加强筋的作用， 另一方面也可以辅助散热。
根据本发明， LED光源可以设置在靠近所述反光杯底部， 也可以设置在靠近所述反光杯 开口部。 LED光源发出的光由反光杯的内表面反射出来， 由此可以改变反光杯反射出来的光 束角度的大小， 其反射角度大小范围可以控制到 10° — 60° 。
较佳地， 本发明的导热板设置成其中心垂直轴线与所述反光杯的中心垂直轴线重叠， 并 且所述导热板的中心垂直轴线与所述反光杯的弧线之交接点的切线与所述导热板的中心垂直 轴线垂直。
导热板、 散热器和反光杯可以是各自独立的部分， 也可以是其中两两一体成型， 又或者 三者一体成型。
要加强散热效果， 所述光源面板、 导热板、 散热器和反光杯最好选用可导热的材料， 如 铝、 铝合金或陶瓷。
由于本发明的 LED反射灯具有非常高的光效和良好的聚光性，故反光杯开口部可以不设 置反射灯罩， 当然也可以根据需要而加设反射灯罩。
本发明的 LED反射灯将 LED芯片光源面板与导热板紧密地接触， 导热板与散热器又连 为一体， 因而形成了一条良好的导热和散热途径，将 LED光源散发出的热量通过光源面板一 导热板一散热器的散热途径以及反光杯散发出去， 降低了 LED光源的温度。反光杯开口部不 设置玻璃反射灯罩， LED 光源可以与空气流通， 有利于热量的散发， 可以进一步降低 LED 发光时产生的热量， 从而确保 LED不过热， 延长了 LED反射灯的寿命， 由此解决了大功率 LED反射灯发热的问题， 再加上可密集地排列多个 LED, 有利于做成更大功率的 LED反射 灯。
由于 LED光源装载在反光杯的中央位置， LED发出的光可以通过反光杯折射出去， 从 而具有良好的聚光性能。此外，通过改变 LED光源的位置可以改变反光杯折射出来的光束角 度的大小， 有利于更多场合的应用。
当 LED光源设置在反光杯的反射内表面所在的拋物线的焦点位置时， LED发出的光具 有更好的聚光性能和更高的光通量。在这种情况下，采用较小功率的 LED反射灯可以达到与 现在较大功率的 LED灯具相同的照明效果； 而且因为功率较小， LED的发热量也较小， 故 LED灯的使用寿命可以更长。
以下将结合附图对本发明的构思、 具体结构及产生的技术效果作进一步说明， 以充分地 了解本发明的目的、 特征和效果。 附图说明
图 1所示为现有技术中的一种 LED灯具的俯视图。
图 2所示为图 1所示的 LED灯具的正视图。
图 3所示为本发明第一实施例的 LED反射灯的顶部立体示意图 ， 其中该 LED反射灯具 有 2块光源面板。
图 4所示为图 3所示的 LED反射灯的底部立体示意图。
图 5所示为图 3所示的 LED反射灯的立体分解仰视图。
图 6所示为图 3所示的 LED反射灯的立体分解俯视图。
图 7所示为本发明第二实施例的 LED反射灯的顶部立体示意图 ， 其中该 LED反射灯具 有 3块光源面板。
图 8所示为本发明第三实施例的 LED反射灯的顶部立体示意图， 其中该 LED反射灯具 有 4块光源面板。
图 9所示为本发明第四实施例的 LED反射灯的顶部立体示意图， 其中该 LED反射灯的 反光杯由对称设置的两个半反射体组成。
图 10所示为图 9所示的 LED反射灯的立体分解仰视图。
图 11所示为图 9所示的 LED反射灯的立体分解俯视图。 图 12(A)和图 12(B)所示为图 9所示的 LED反射灯的中心垂直轴线的剖面图。 具体实施方式
参照图 3至图 6， 图中示出了作为本发明第一优选实施例的 LED反射灯 100， 所述反射 灯 100包括两个 LED光源 60、 两块光源面板 20、 一块导热板 10、 散热器 50、 反光杯 30、 金属帽 40以及控制 LED光源的控制电路 （未示出）。 该控制电路可以选择地做成与 LED反 射灯一体装在散热器外表面的散热片上， 也可以做成与 LED 分体， 带有插拔式接头以便与 LED反射灯连接。 控制电路不为本发明的要点， 本处不做详细描述。
LED光源可以由一或多个 LED构成。 在本实施例中， 两个 LED光源 60各由 3个芯片 LED组成， 分别固定在两块光源面板 20上。 LED光源 60和光源面板 20可以点胶或任何已 知的机械方式固定在一起。 每块光源面板 20都设有螺丝孔 22、 24， 用螺丝把光源面板 20固 定在导热板 10上。在光源面板 20与导热板 10之间可以涂一层散热油，从而可以起到更好的 导热作用。 当然， 把光源面板 20固定在导热板 10上可以采用任何本领域已知的任何其它方 式， 最好能够使二者形成良好的导热和散热效果， 例如， 可以利用粘性较强的散热油直接把 光源面板 20粘结在导热板 10上。
如图 5和图 6所示， 导热板 10呈半圆形的板状， 在与光源面板 20的螺丝孔 22、 24相对 应的位置上分别设有缺口 12和螺丝孔 14。 把两块光源面板 20放置在导热板 10的两侧， 并 使光源面板 20的螺丝孔 22、 24分别与导热板 10的缺口 12和螺丝孔 14对准，用螺丝就可以 把两块光源面板 20锁定在导热板 10的两侧。 如上所述， 在锁定光源面板 20与导热板 10之 前可以在二者之间的接触面涂上一层散热油。 当然， 也可以采用粘性较好的散热油把两块光 源面板 20直接粘结在导热板 10的两侧。
散热器 50呈环状，导热板 10设置在所述散热器 50的内腔并与所述散热器的中心垂直轴 线叠合。 在本实施例中， 散热器 50和导热板 10是一体成型的， 当然二者也可以通过可插接 方式连接在一起， 形成良好的导热接触。如图 4和图 6所示， 散热器 50的外端部具有多条从 该端部中心延伸至散热器侧壁的筋条 54， 这些筋条 54既可以起加强筋的作用， 又有助于散 热。 散热器 50的内腔表面设计成与反光杯 30的外表面相配合的弧形， 从而紧贴在反光杯 30 的外表面 36， 以利于通过反光杯 30将热量散去。 另外， 在散热器 50的外表面也设有多条与 其中心垂直轴线平行且间隔排列的散热片 52，这些散热片 52的设置也可以将导热板 10传递 过来的热量很好地散发出去， 达到更好的散热效果。
反光杯 30具有成抛物面的反射内表面 32、由所述的反射内表面 32边缘构成的反射开口 以及在反光杯底部形成的一条通槽 34。 反光杯 30设计成喇叭形状， 底部直径较小， 越往开 口处直径越大， 从而具有 PAR灯的特性， 并且具有更高的光效和更好的聚光性。 反光杯 30 的反射内表面 32为光滑弧面， 可以镀上光亮反光材料， 以增加光效。 LED光源 60发出的光 会反射到反光杯的反射内表面 32上. 再经由反射开口折射出去。在本实施例中， 在反射开口 处不设置玻璃反射光罩， 使芯片 LED 可以与大气相通， 更有利于散热， 从而可进一步降低 LED发光时产生的热量。 当然， 有需要的时候， 也可以加设一个光滑的透光性好的玻璃罩。 通槽 34的形状和尺寸刚好使得固接有 LED光源 60和光源面板 20的导热板 10通过该通槽 34插入到所述反光杯内部， 以致于 LED光源 60与反光杯 30的中心垂直轴线平行。 更好地， 导热板 10设置成其中心垂直轴线与反光杯 30的中心垂直轴线重叠，并且该导热板 10的中心 垂直轴线与反光杯 30的弧线之交接点的切线与导热板 10的中心垂直轴线垂直。 这时， 排列 在每块光源面板 20上的 3个芯片 LED都设置在同一个垂直的平面上， 它们发出的光可以均 匀地反射到反光杯的反射内表面 32上， 再经过折射的光能够有效地聚集， 达到照明亮度。
根据本发明， 光源面板 20可以根据需要设计为 LED光源 60较靠近反光杯 30的底部通 槽 34处， 也可以设计为较靠近反光杯的反射开口处。 如上所述， 因为芯片 LED发出的光经 由反光杯 30的反射内表面 32反射出来， 所以改变 LED光源 60在反光杯的位置， 就可以改 变反光杯 30反射出来的光束角度的大小， 从而可调整 LED反射灯的光照射角度。 这与现有 技术中的 LED灯具通过反射灯罩来控制光束角度不同。 一般地， 本发明的 LED反射灯的光 束角度的大小范围可以控制到 10° 至 60° 。
金属帽 40为一端开口、 另一端闭合的空心圆柱， 其相对两侧各有一缺口 42， 该缺口的 大小与导热板 10的厚度相配合， 使得金属帽 40可以直接扣在导热板 10上。 由于该金属帽 40亦处于反光杯 30的中轴位置上， 刚好可以挡住位于金属帽 40正下方的 LED光源 60经由 反光杯的中央位置发出的光，从而人眼不会直接看到 LED光源直接发出的光，有利于保护人 的眼睛。 金属帽 40的闭合端顶面可以做成绿色的荧光设计， 作为识别本发明的 LED反射灯 之用。
导热板 10、 散热器 50和反光杯 30可以是三个独立部分， 通过插接方式固定在一起形成 良好的导热接触。 这三个部分也可以是两两一体成型， 即导热板 10和散热器 50做成一体， 或者导热板 10和反光杯 30做成一体， 又或者散热器 50和反光杯 30做成一体。 导热板 10、 散热器 50和反光杯 30还可以一体成型。
光源面板 20、 导热板 10、 散热器 50和反光杯 30最好选用可导热的材料， 例如铝、铝合 金或陶瓷等。
如图 7所示为本发明第二实施例的 LED反射灯的立体示意图。本实施例与第一实施例的 结构基本相同，主要的不同之处在于：光源面板 220的数量为 3块，相对应地， LED光源 260 也为 3个， 每个 LED光源分别固定在一块光源面板上； 导热板 210做成三角形状， 包括由三 个侧平面 214围成的中心立柱和从该中心立柱延伸出来三个导热分板 212， 而三块光源面板 220分别固接在由这三个导热分板 212分隔开来的三个侧平面 214上。 在该实施例中， 金属 帽 240相应地设置 3个缺口， 以扣接在导热板 210的三个侧平面 214的接合处。 散热器 250 的结构与第一实施例大致相同。本实施例因为增加了一个 LED芯片光源， 因而可以得到功率 较大的 LED反射灯。
如图 8所示本发明第三实施例的 LED反射灯的立体示意图。本实施例与第一实施例的结 构基本相同， 主要的不同之处在于： 该实施例的光源面板 320的数量为 4块， 对应的 LED光 源 360也为 4个； 导热板 310包括由四个侧平面 314围成四边形形状的中心立柱， 而四块光 源面板 320分别固接在该四个侧平面 314上。 在本实施例中， 金属帽 340相应地设置 4个缺 口， 以扣接在导热板 310的四个侧平面 314的接合处。 与第二实施例相比， 本实施例又增加 了一个 LED光源， 因而 LED反射灯的功率可以做得更大。
图 9至图 12示出了作为本发明第四优选实施例的 LED反射灯 400。本实施例的 LED反 射灯 400与第一实施例的结构基本相同， 包括两个 LED光源 460、 两块光源面板 420、 一块 导热板 410、 散热器 450以及控制 LED光源的控制电路。
本实施例与上面描述的第一实施例主要的不同之处在于： 本实施例的反光杯 430由形状 相同、 大小一样的两个半反射体 431、 432组成。 两个半反射体 431、 432组合在一起可以形 成一个喇叭形状。 该两个半反射体 431、 432沿中心垂直轴线对称地设置，并且形成有一开口 槽 434。所述开口槽 434的形状和尺寸刚好使得固接有 LED光源 460和光源面板 420的导热 板 410插入该开口槽 434中， 如图 9所示。
本实施例的 LED反射灯 400的特征在于： 所述半反射体 431、 432的反射内表面为拋物 线延伸形成的抛物面， 所述两个 LED光源 460的中心点分别位于所述两个半反射体的抛物面 的拋物线的焦点上。 换言之， 如图 12(A)和图 12(B)所示， 该两个半反射体 431、 432的抛物 面的拋物线的焦点分别与两个 LED光源 460的中心点重合。 这样的设计使得 LED发出的光 都经所述半反射体的内抛物面反射，获得更高的光效和更好的聚光性。一般地，与现有的 LED 灯具相比， 本实施例的 LED反射灯的光通量可以提高 5%-20%。
半反射体 431、432的内反射表面为光滑抛物面，镀上光亮反光材料可以进一步提高光效。 当然,， 半反射体 431、 432的内反射表面也可以采用能够产生聚光效果的任何形状的面， 这 对本领域技术人员来说是显易而见的。根据本发明， 固定有 LED光源的光源面板紧贴在导热 板上， 导热板又与散热器形成导热连接， 籍此形成一条良好的光源面板一导热板一散热器的 导热和散热途径。 LED光源发出的热量通过该散热途径快速地散发出去， 降低了 LED光源 的温度， 从而有效地解决了 LED灯具的散热问题。 另外， 反光杯设有开口， 更有利于热量的 散发。 由于 LED光源以与反光杯的中心垂直轴线平行的方式安装在反光杯的中央位置上，故 LED发出的光可以通过反光杯的内表面折射出去， 形成良好的聚光性。 当 LED光源的中心 点设计成与反光杯的内抛物面的拋物线的焦点重合，本发明的 LED反射灯的聚光性更好，光 通量更高。 此外， 只需要改变 LED导热板的设计就可以增加 LED光源和光源面板的数量， 所以本发明可以做成系列化的大功率 LED反射灯。
当把 LED光源设置于较靠近反光杯底部时， LED光源发出的光折射角度小； 当把 LED 光源设置于较靠近反光杯的反射开口时， LED光源发出的光折射角度较大。 以此方式可以调 整 LED反射灯的照射角度大小， 适合于更广的应用场合。 LED光源的数量可以为 2个以上， 如 3个或 4个， 甚至更多个， 因而可以做成更大功率的反射灯， 适用于更广泛的领域。
因此， 本发明提供了一种 LED反射灯， 不仅有效地解决了大功率 LED的散热问题， 而 且还大大地提高了 LED的光通量和发光效率。
虽然结合附图描述了本发明的几种较佳具体实施例， 但本发明不应被限制于与以上的描 述和附图完全相同的结构和操作。 对本技术领域的技术人员来说， 在不超出本发明构思和范 围的情况下通过逻辑分析、 推理或者有限的实验还可对上述实施例作出许多改进和变化， 但 这些改进和变化都应属于本发明要求保护的范围。

Claims

权 利 要 求 书
1. 一种 LED反射灯， 包括所述 LED反射灯的控制电路， 其特征在于， 所述 LED反射 灯还包括：
至少两个 LED光源， 所述 LED光源由所述控制电路控制；
至少两块光源面板， 所述至少两个 LED光源分别固定在所述至少两块光源面板上； 至少一块导热板， 所述至少两块光源面板以可导热方式分别固接在所述至少一块导热板 上；
反光杯， 所述反光杯具有反射内表面、 由所述的反射内表面边缘构成的反射开口以及在 所述反光杯底部形成的槽，所述的固接有 LED光源和光源面板的导热板经由所述反光杯底部 的槽插入到所述反光杯的内部， 以致于所述的 LED光源与所述反光杯的中心垂直轴线平行； 以及
散热器， 所述散热器内部设有空腔， 所述空腔的尺寸和形状设计成与所述反光杯以及所 述导热板的至少一部分结合。
2. 如权利要求 1所述的 LED反射灯， 其特征在于， 所述 LED反射灯包括： 两个 LED光源；
两块光源面板， 所述两个 LED光源分别固定在所述两块光源面板上； 以及
一块导热板， 所述两块光源面板以可导热方式分别固定在所述导热板的两侧； 其中所述散热器呈环状， 其内表面做成与所述反光杯的外表面紧贴在一起。
3. 如权利要求 1所述的 LED反射灯， 其特征在于， 所述的 LED反射灯还包括设置在所 述反光杯的中心垂直轴线上的金属帽， 其相对两侧壁设有至少两个与所述导热板厚度相配合 的缺口， 使得所述导热板卡接在所述缺口中。
4. 如权利要求 1所述的 LED反射灯， 其特征在于， 所述反光杯由两个对称的半反射体 组成， 所述半反射体沿中心垂直轴线对称地设置； 所述半反射体的反射内表面为拋物线延伸 形成的抛物面，其中所述两个 LED光源的中心点分别位于所述两个半反射体的抛物面的拋物 线的焦点上。
5. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述 LED光源以点 胶方式或机械方式固定在所述光源面板上。
6. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 采用以下方式把所述 光源面板与所述导热板固定在一起： 紧固件、 点胶或有粘性的散热油。
7. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述光源面板与所述 导热板之间涂有散热油层。
8. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述反光杯设计成喇 叭形状。
9. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述反光杯的反射内 表面镀有光亮反光材料。
10. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述散热器为空心的 圆柱， 其内表面设计成与所述反光杯相配合的弧形， 从而紧贴在反光杯的外表面。
11. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述散热器的外表面 设有多条与所述反光杯的中心垂直轴线平行且间隔排列的散热片。
12. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述散热器一端设有 多条从所述散热器的中心延伸至侧壁的筋条。
13. 如权利要求 1至 3中任一项所述的 LED反射灯， 其特征在于， 所述 LED光源设置 在靠近所述反光杯底部。
14. 如权利要求 1至 3中任一项所述的 LED反射灯， 其特征在于， 所述 LED光源设置 在靠近所述反光杯开口部。
15. 如权利要求 1至 4中任一项所述的 LED反射灯，其特征在于，所述导热板设置成其 中心垂直轴线与所述反光杯的中心垂直轴线重叠， 并且所述导热板的中心垂直轴线与所述反 光杯的弧线之交接点的切线与所述导热板的中心垂直轴线垂直。
16. 如权利要求 1至 4中任一项所述的 LED反射灯 ，其特征在于，所述导热板与所述散 热器一体成型。
17. 如权利要求 1至 4中任一项所述的 LED反射灯，其特征在于，所述导热板与所述反 光杯一体成型。
18. 如权利要求 1至 4中任一项所述的 LED反射灯，其特征在于，所述散热器与所述反 光杯一体成型。
19. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述导热板、所述散 热器和所述反光杯一体成型。
20. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述光源面板、 导热 板、 散热器和反光杯选用可导热的材料。
21. 如权利要求 20所述的 LED反射灯， 其特征在于， 所述可导热的材料为铝、 铝合金 或陶瓷。
22. 如权利要求 1至 4中任一项所述的 LED反射灯， 其特征在于， 所述反光杯开口部加 设反射灯罩。
PCT/CN2009/070263 2008-12-17 2009-01-22 Led反射灯 WO2010069159A1 (zh)

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