WO2011120410A1 - 发光二极管灯具 - Google Patents
发光二极管灯具 Download PDFInfo
- Publication number
- WO2011120410A1 WO2011120410A1 PCT/CN2011/072205 CN2011072205W WO2011120410A1 WO 2011120410 A1 WO2011120410 A1 WO 2011120410A1 CN 2011072205 W CN2011072205 W CN 2011072205W WO 2011120410 A1 WO2011120410 A1 WO 2011120410A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- reflector
- lens
- heat dissipating
- emitting
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/71—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a light emitting diode lamp, and more particularly to a light emitting diode lamp that is different from existing lamps. Background technique
- LED Light Emitting Diode
- LEDs are a tiny solid-state light source. Compared with traditional incandescent bulbs and fluorescent lamps, LEDs can have multiple or multiple combinations. In addition, a single light-emitting diode has the advantages of high light conversion efficiency, low power consumption, high shock resistance, and wasteful recycling and environmentally friendly characteristics. Therefore, LEDs are generally favored by the industry and can be used as an alternative to traditional lighting fixtures. A potential commodity. Summary of the invention
- the invention provides an LED lamp comprising a heat dissipating component, a reflector, a light emitting component and a side shot lens, the reflector having an opening.
- the light emitting element is disposed between the heat dissipating component and the reflector, and the opening exposes the light emitting component.
- the side-projection lens passes through the opening to be located in the reflector, and the light-emitting element is located between the side-projection lens and the heat-dissipating component, wherein the light emitted from the light-emitting component is changed to the light path by the side-projection lens and projected onto the reflector. Reflected again outside the reflector.
- the heat dissipating component includes a heat dissipating body and a plurality of heat dissipating fins, wherein the heat dissipating body has a bowl shape, and the heat dissipating fin is radially disposed on the heat dissipating body, and the heat dissipating body Has a plurality of hollows.
- the light-emitting element comprises a light-emitting diode and a circuit board, wherein the light-emitting diode is disposed on the circuit board, and the portion of the circuit board is disposed between the heat-dissipating body and the reflector between.
- the side-emitting lens includes a lens body and a reflective layer, wherein the lens body has a reflecting surface and a light emitting surface surrounding the reflecting surface, and the reflecting surface is a curved surface.
- the reflective layer is disposed on the reflective surface, and the light projected by the light-emitting element is reflected by the reflective layer and then emitted from the light-emitting surface.
- the light-emitting element and the side-projecting lens further have a gap therebetween.
- the reflector has a first positioning structure
- the side lens has a second positioning structure
- the shapes of the first positioning structure and the second positioning structure are complementary.
- a plurality of fasteners are also included, and the fastener passes through the illuminating element and locks into the heat dissipating component.
- a plurality of fasteners are also included, and the fastener passes through the heat dissipating component and is locked into the reflector.
- the present invention provides another LED luminaire comprising a heat dissipating component, a reflector, a illuminating component and a side shot lens.
- the reflector has an opening at a center position corresponding to the reflector.
- a side-projecting lens passes through the opening to be positioned within the reflector, and the side-projecting lens has a top concave reflecting surface and a side emitting surface surrounding the concave reflecting surface.
- the light emitting component is disposed in a space formed by the top concave reflecting surface of the side shooting type lens and the side light emitting surface surrounding the concave concave reflecting surface, and is located on the heat dissipating component.
- the light emitted from the light-emitting assembly is projected to the reflector by the side-projection lens, and the light guided by the side-projection lens is guided in parallel to the outside of the reflector.
- the heat dissipating component includes a heat dissipating body and a plurality of heat dissipating fins, wherein the heat dissipating body has a bowl shape, and the heat dissipating fins are radially disposed on the heat dissipating body, and the heat dissipating body Has a plurality of hollows.
- the light-emitting component comprises a light-emitting diode and a circuit board, wherein the light-emitting diode is disposed on the circuit board, and a part of the circuit board is disposed between the heat-dissipating body and the reflector between.
- the light-emitting component and the side-projecting lens further have a gap therebetween.
- the reflector has a first positioning structure
- the side lens has a second positioning structure
- the shapes of the first positioning structure and the second positioning structure are complementary.
- a plurality of fasteners are further included, and the fastener passes through the illuminating assembly and locks into the heat dissipating component.
- a plurality of fasteners are also included, and the fastener passes through the heat dissipating component and locks into the reflector.
- the beneficial technical effect of the present invention compared with the conventional bulb type luminaire is that the illuminating diode lamp of the present invention uses the light emitting diode as a light source, and is matched with the side illuminating lens to achieve a uniform illuminating effect of the illuminating diode illuminator.
- FIG. 1 is an exploded perspective view of an LED lamp according to an embodiment of the invention.
- FIG. 2 is a schematic view of another perspective of the LED lamp of FIG. 1.
- FIG. 3 is a schematic cross-sectional view of the LED lamp of FIG. 1 after assembly and a corresponding distribution of light intensity and angle.
- FIG. 4 is a partially enlarged cross-sectional view showing another embodiment of the light emitting diode lamp.
- the LED lamp 100 includes a heat dissipating component 110, a reflector 120, a light emitting component 130, and a side shot lens 140.
- the heat dissipating component 110 includes a heat dissipating body 112 and a plurality of heat dissipating fins 114.
- the heat dissipating body 112 is substantially in the shape of a bowl, and the heat dissipating fins 114 are radially disposed on the heat dissipating body 112.
- the heat dissipation body 112 and the heat dissipation fins 114 of the embodiment may be integrally formed, or the heat dissipation fins 114 may be assembled to the heat dissipation body 112.
- the heat dissipation body 112 and the heat dissipation fins 114 may have a plurality of hollow portions 116 to reduce the overall weight of the heat dissipation element 110.
- the shape of the reflector 120 is similar to that of the heat dissipation body 112 of the heat dissipating member 110, and is also substantially bowl-shaped so that the reflector 120 and the heat dissipating member 110 can be superposed on each other to be assembled.
- the central portion of the reflector 120 has an opening 122, and the reflector 120 also has an inner surface 124 that surrounds the opening 122.
- the light-emitting element 130 includes a light-emitting diode 132 and a circuit board 134 .
- the light-emitting diode 132 is disposed on the circuit board 134 , and the edge portion of the circuit board 134 is interposed.
- the opening 122 exposes the light emitting diode 132 of the light emitting element 130.
- the side-projection lens 140 covers the light-emitting element 130, and most of the side-projection lens 140 passes through the opening 122 to be located in the reflector 120.
- the circuit board 134 of the light-emitting element 130 is in the side-emitting type.
- the lens 140 and the heat dissipation body 112 of the heat dissipation element 110 are disposed.
- the side-projection lens 140 includes a lens body 142 and a reflective layer 144.
- the lens body 142 has a reflective surface 142a and a light-emitting surface 142b surrounding the reflective surface 142a, and the reflective layer 144 is disposed on the reflective surface 142a.
- the reflective surface 142a of the present embodiment has a central concave shape and a cross-sectional view to form a curved surface of a V-shaped surface.
- the reflective surface 142a may also be a centrally curved curved surface, which is selected according to requirements, and protrudes or The degree of depression can be precisely calculated by the designer.
- the light-emitting component 130 may be first placed in the heat-dissipating body 112 of the bowl-shaped heat dissipating component 110.
- the LED luminaire 100 further includes a plurality of fasteners 150, and the circuit board 134 of the illuminating component 130 has a plurality of locking holes 134a, and the locking member 150 passes through the locking hole 134a of the circuit board 134 of the illuminating component 130 and is locked.
- the heat dissipating body 112 of the heat dissipating component 110 is such that the light emitting component 130 and the heat dissipating component 110 are relatively fixed.
- the locking hole 134a of the circuit board 134 of the embodiment is a U-shaped hole formed from the edge of the circuit board 134. In other embodiments, the locking hole 134a may also be an opening provided from the inside of the circuit board 134.
- the apertures are not connected to the edges of the circuit board 134, wherein the shape of the apertures can be varied as desired.
- the side-projecting lens 140 and the reflector 120 can be assembled.
- the reflector 120 of the embodiment has a first positioning structure 126
- the bottom of the side-projecting lens 140 is provided with a second positioning structure 146, wherein the first positioning structure 126 is a concave point
- the second The positioning structure 146 is a bump so that the side-projecting lens 140 is positioned by the first positioning structure 126 which is a pit and the second positioning structure 146 which is a bump when assembled with the reflector 120 to prevent assembly errors.
- the shapes of the first positioning structure 126 and the second positioning structure 146 are complementary, but in other embodiments, the shapes and forms of the first positioning structure 126 and the second positioning structure 146 may be in accordance with actual needs. change.
- the reflector 120 is overlapped with the heat dissipating component 110, and the fastener 150 is locked into the reflector 120 through the heat dissipating component 110 to fix the reflector 120 to the heat dissipating component 110.
- the light-emitting diode lamp 100 of the present embodiment uses the light-emitting diode 132 as a light source, which is different from the configuration of the conventional light-bulb type lamp, and can be provided as compared with a bulb-type lamp that generally uses a bulb as a light source. Satisfactory light brightness, greatly improving energy saving and power saving effect.
- the LED 132 of the LED 130 emits light, and the light enters the lens body 142 of the side lens 140 and is reflected by the reflective layer 144.
- the light exit surface 142b on the side of the body 142 is further refracted.
- a first blend of light is produced within the lens body 142.
- the light that is emitted from the lens body 142 enters the dispersing medium (air;) from the dense medium (; solid;), so that the light that is emitted from the lens body 142 is emitted out of the lens body 142 at a large refractive angle, and is fired.
- the inner surface 124 of the reflector 120 is not a smooth and continuous curved curve in cross section, but a discontinuous and segmental curve or straight line, wherein each segment of the curve or line and a virtual horizontal line V
- the angle of the clip is obtained by precise calculation, and the purpose is to project the light emitted from the lens body 142 onto the inner surface 124 to be guided and to exit the LED luminaire 100 in a direction perpendicular to the horizontal line V.
- the light emitted from the lens body 142 is guided by the inner surface 124 of the reflector 120, and the light is mixed again.
- the light-emitting diode lamp 100 uses the side-emitting lens 140, the light emitted from the light-emitting diode 132 of the light-emitting element 130 is emitted from the light-emitting surface 142b of the side of the lens body 142 of the side-projecting lens 140, and the light is first Focusing on both sides, as shown in the distribution of light intensity and angle in Figure 3, there is a higher light intensity peak near the positive and negative 80 degrees. Therefore, after passing through the reflection of the reflector 120, the light will be effectively collimated. Therefore, the luminous intensity of the LED lamp 100 is evenly distributed for the user's visual perception.
- the reflective layer 144 of the side-projecting lens 140 effectively emits light from the light-emitting surface 142b located on the side of the lens body 142 and uniformly mixes the light within the reflector 120.
- the LED lamp 100 of the present embodiment does not have any The light directly passes through the reflecting surface 142a of the lens body 142 to be emitted, and further causes a yellow light phenomenon caused by a strong central portion of the light-emitting diode lamp 100 and an uneven peripheral edge.
- a gap G is formed between the light-emitting element 130 and the side-projecting lens 140.
- the gap G is formed by the lens body 142, the light-emitting diode 132, and the circuit board 134.
- the presence of the gap G makes the illuminating element 130 and the side-projecting lens 140 easier to align and assemble.
- the bonding glue 160 may be filled in the gap G so that the side-projecting lens 140 and the light-emitting element 130 can be fixed to each other.
- the LED lamp of the present invention has a different configuration than the conventional lamp type lamp, and The provided brightness and energy saving effect are also better than the previous bulb type lamps.
- the use of side-illuminated lenses allows LED luminaires to emit light over a wide range, avoiding halo.
- the presence of the gap, the light-emitting element and the side-emitting lens have the advantage of easy alignment and assembly.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Description
发光二极管灯具 技术领域
本发明有关一种发光二极管灯具, 且特别是有关一种与现有灯具不同的发光 二极管灯具。 背景技术
发光二极管 (Light Emitting Diode, LED)是一种微小的固态 (Solid-State)光源, 与传统的白炽灯泡及荧光灯相比, 发光二极管可具有多个、 多种的组合。 此外, 单一的发光二极管具有光转换效率高、 耗电量小、 耐震性高和损毁后的废弃物可 回收兼具环保特性等优点, 因此发光二极管被业界普遍看好, 能成为替代传统照 明器具的一大潜力商品。 发明内容
本发明的目的是提供一种与现有灯具不同的可均匀发光的发光二极管灯具。 本发明提出一种发光二极管灯具, 包括一散热元件、 一反射罩、 一发光元件 以及一侧射型透镜, 反射罩具有一开口。 发光元件配置于散热元件及反射罩之 间, 且开口暴露出发光元件。 侧射型透镜穿过开口以位于反射罩内, 且发光元件 位于侧射型透镜及散热元件之间, 其中自发光元件发出的光通过侧射型透镜改变 其光路径而投射至反射罩后, 再反射至反射罩外。
在本发明的发光二极管灯具的一实施例中, 上述的散热元件包括一散热本体 以及多个散热鳍片, 其中散热本体呈碗状, 而散热鳍片放射状地设置于散热本体 上, 且散热本体具有多个镂空部。
在本发明的发光二极管灯具的一实施例中, 上述的发光元件包括一发光二极 管以及一电路板, 其中发光二极管配置于电路板上, 而电路板的部份夹置于散热 本体及反射罩之间。
在本发明的发光二极管灯具的一实施例中, 上述的侧射型透镜包括一透镜本 体以及一反射层, 其中透镜本体具有一反射面及环绕反射面的一出光面, 且反射 面为曲面, 而反射层设置于反射面, 且发光元件投射出的光被反射层反射后从出 光面射出。
在本发明的发光二极管灯具的一实施例中, 上述的发光元件及侧射型透镜之 间还具有一间隙。
在本发明的发光二极管灯具的一实施例中, 上述的反射罩具有一第一定位结 构, 而侧射型透镜具有一第二定位结构, 且第一定位结构及第二定位结构的形状 互补。
在本发明的发光二极管灯具的一实施例中, 还包括多个锁固件, 且锁固件穿 过发光元件并锁入散热元件。
在本发明的发光二极管灯具的一实施例中, 还包括多个锁固件, 且锁固件穿 过散热元件并锁入反射罩。
本发明提出另一种发光二极管灯具, 包括一散热组件、 一反射罩、 一发光组 件以及一侧射型透镜。 反射罩在相应于反射罩的中心位置具有一开口。 侧射型透 镜穿过开口以位于反射罩内, 且所述侧射型透镜具有顶凹反射面和环绕所述顶凹 反射面的侧出光面。 发光组件是配置于由侧射型透镜的顶凹反射面和环绕顶凹反 射面的侧出光面所形成的一空间中, 且位于该散热组件上。 自发光组件发出的光 藉由侧射型透镜导向而投射至反射罩, 且由侧射型透镜所导向的光是平行地导向 至反射罩外。
在本发明的发光二极管灯具的一实施例中, 上述的散热组件包括一散热本体 以及多个散热鳍片, 其中散热本体呈碗状, 而散热鳍片放射状地设置于散热本体 上, 且散热本体具有多个镂空部。
在本发明的发光二极管灯具的一实施例中, 上述的发光组件包括一发光二极 管以及一电路板, 其中发光二极管配置于电路板上, 而电路板的部份夹置于散热 本体及反射罩之间。
在本发明的发光二极管灯具的一实施例中, 上述的发光组件及侧射型透镜之 间还具有一间隙。
在本发明的发光二极管灯具的一实施例中, 上述的反射罩具有一第一定位结 构, 而侧射型透镜具有一第二定位结构, 且第一定位结构及第二定位结构的形状 互补。
在本发明的发光二极管灯具的一实施例中, 还包括多个锁固件, 且锁固件穿 过发光组件并锁入散热组件。
在本发明的发光二极管灯具的一实施例中, 还包括多个锁固件, 且锁固件穿 过散热组件并锁入反射罩。
本发明与传统灯泡型态的灯具相比较的有益技术效果是: 本发明的发光二极 管灯具使用发光二极管作为光源, 并且与侧射型透镜搭配, 可使发光二极管灯具 达到均匀发光的效果。 附图概述
为让本发明的上述特征和优点能更明显易懂, 下面将结合附图对本发明的较 佳实施例作详细说明, 其中:
图 1为本发明一实施例的一种发光二极管灯具的分解立体图。
图 2为图 1的发光二极管灯具的另一视角的示意图。
图 3为图 1的发光二极管灯具组装后的剖面示意图及其相对应的光强度与角度 的分布的示意图。
图 4为另一实施例的发光二极管灯具的局部剖面放大示意图。 本发明的最佳实施方式
图 1为本发明一实施例的一种发光二极管灯具的分解立体图, 而图 2为图 1的 发光二极管灯具的另一视角的示意图。 请同时参考图 1及图 2, 发光二极管灯具 100 包括一散热元件 110、 一反射罩 120、 一发光元件 130以及一侧射型透镜 140。 散热 元件 110包括一散热本体 112以及多个散热鳍片 114, 其中散热本体 112大致呈碗 状, 而散热鳍片 114放射状地设置于散热本体 112上。 本实施例的散热本体 112与散 热鳍片 114可为一体成型, 或者散热鳍片 114也可以是组装至散热本体 112上。 此 外, 散热本体 112及散热鳍片 114可具有多个镂空部 116, 以减轻散热元件 110的整 体重量。
反射罩 120的形状与散热元件 110的散热本体 112的形状类似, 也大致呈碗 状, 以使反射罩 120与散热元件 110可互相叠合以组装在一起。 反射罩 120的中央部 份有一开口 122, 且反射罩 120还具有围绕开口 122的一内表面 124。
图 3为图 1的发光二极管灯具组装后的剖面示意图及其相对应的光强度分布的 示意图。 请同时参考图 1、 图 2及图 3, 发光元件 130包括一发光二极管 132以及一电 路板 134, 其中发光二极管 132配置于电路板 134上, 而电路板 134的边缘部份夹置
于散热本体 112及反射罩 120之间, 且开口 122暴露出发光元件 130的发光二极管 132。
承上述, 侧射型透镜 140罩覆于发光元件 130上, 且大部份的侧射型透镜 140 穿过开口 122以位于反射罩 120内, 换言之, 发光元件 130的电路板 134位于侧射型 透镜 140及散热元件 110的散热本体 112之间。 详细而言, 侧射型透镜 140包括一透 镜本体 142以及一反射层 144, 其中透镜本体 142具有一反射面 142a及环绕反射面 142a的一出光面 142b, 而反射层 144设置于反射面 142a。 本实施例的反射面 142a为 中央下凹而剖视图为形成一个 V型表面的弧面, 而在其它实施例中, 反射面 142a 也可以是中央突出的弧面, 依照需求选用, 且其突出或凹陷的程度可经过设计者 精密的计算。
请继续参考图 1及图 2, 当欲将整个发光二极管灯具 100组立时, 可先将发光 元件 130置于呈碗状的散热元件 110的散热本体 112中。 其中发光二极管灯具 100还 包括多个锁固件 150, 而发光元件 130的电路板 134具有多个锁固孔 134a, 且锁固件 150穿过发光元件 130的电路板 134的锁固孔 134a并锁入散热元件 110的散热本体 112, 以使发光元件 130与散热元件 110相对固定。 本实施例的电路板 134的锁固孔 134a为从电路板 134边缘开设的 U型孔, 在其它实施例中, 锁固孔 134a也可以是从 电路板 134的内部设置的开孔, 而此开孔未与电路板 134的边缘连接, 其中开孔的 形状可依照需求改变。
在此同时, 可将侧射型透镜 140与反射罩 120组装在一起。 附带一提的是, 本 实施例的反射罩 120具有一第一定位结构 126, 而侧射型透镜 140的底部设置有一第 二定位结构 146, 其中第一定位结构 126为凹点, 而第二定位结构 146为凸点, 以使 侧射型透镜 140在与反射罩 120组装在一起时, 借助为凹点的第一定位结构 126及为 凸点的第二定位结构 146来定位, 防止组装错误。 于本实施例中, 第一定位结构 126及第二定位结构 146的形状为互补, 但在其它的实施例中, 第一定位结构 126及 第二定位结构 146的形状及形式可以依照实际需求来改变。
之后, 将反射罩 120与散热元件 110叠合在一起, 并将锁固件 150穿过散热元 件 110锁入反射罩 120, 以使反射罩 120与散热元件 110固定在一起。
相较于一般常见使用灯泡作为光源的灯泡型灯具, 本实施例的发光二极管灯 具 100是使用发光二极管 132作为光源, 与传统灯泡型灯具的配置不同, 且可提供
满意的光亮度, 大幅地提升节能省电效果。
接着请参考图 3, 当本实施例的发光二极管灯具 100开始作用, 发光元件 130 的发光二极管 132发光, 其光线进入侧射型透镜 140的透镜本体 142后通过反射层 144反射后, 从位于透镜本体 142侧边的出光面 142b再折射出去。 光线在通过反射 层 144反射时, 便会在透镜本体 142内产生第一次的混光。 之后, 射出透镜本体 142 的光, 由于是从密介质 (;固体;)进入疏介质 (空气;), 所以射出透镜本体 142的光会以 较大的折射角度射出透镜本体 142之外, 并射至反射罩 120的内表面 124上。
须说明的是, 反射罩 120的内表面 124在截面上并非是圆滑且连续的弧形曲 线, 而是不连续且一段一段的曲线或直线, 其中各段曲线或直线与一虚拟的水平 线 V所夹的角度是通过精确计算而得, 目的在于使从透镜本体 142出射的光线, 投 射至内表面 124上被导正并以垂直于水平线 V的方向射出发光二极管灯具 100外。 当然, 于光线通过透镜本体 142侧边的出光面 142b射出后, 乃至于由透镜本体 142 出射的光线被反射罩 120的内表面 124导正, 会再次进行混光。
特别的是, 发光二极管灯具 100使用了侧射型透镜 140, 所以发光元件 130的 发光二极管 132发出的光会从位于侧射型透镜 140的透镜本体 142的侧面的出光面 142b出射, 光线会先集中在两侧, 如图 3的光强度与角度的分布示意图所示, 而在 接近正、 负 80度处才会有较高的光强度尖峰 (peak)。 所以, 再经过反射罩 120的导 正后, 光线将被有效地准直化。 因此, 对于使用者在视觉上的感受, 发光二极管 灯具 100的发光强度均匀分布。 换言之, 侧射型透镜 140的反射层 144有效地使光线 从位于透镜本体 142侧边的出光面 142b出射并在反射罩 120之内均匀混光, 本实施 例的发光二极管灯具 100并不会有光线直接穿透透镜本体 142的反射面 142a而出 射, 且进而造成发光二极管灯具 100的中央部份光强度较强, 而周缘又不均匀所引 起的黄晕现象。
特别的是, 发光元件 130及侧射型透镜 140之间还具有一间隙 G, 此间隙 G是由 透镜本体 142、 发光二极管 132及电路板 134共同形成的。 间隙 G的存在, 让发光元 件 130及侧射型透镜 140在对位及组装步骤更为简单容易。 此外, 可以在间隙 G填 入接合胶 160, 以使侧射型透镜 140与发光元件 130能够互相固定。 更甚者, 还可以 在接合胶 160内灌注扩散粒子 162, 以更为提升混光的效果, 如图 4示。
综上所述, 本发明的发光二极管灯具具有较以往灯泡型灯具不同的配置, 且
所提供的光亮度及节能省电效果也较以往灯泡型灯具佳。 此外, 侧射型透镜的使 用让发光二极管灯具能够大范围地均匀发光, 避免黄晕现象。 再者, 间隙的存 在, 发光元件及侧射型透镜具有易于对位及组装的优点。
虽然本发明已以实施例揭露如上, 然而其并非用以限定本发明, 任何所属技 术领域中具有通常知识者, 在不脱离本发明的精神和范围内, 当可作出种种等同 的改变或替换, 故本发明的保护范围当视后附的本申请权利要求范围所界定的为 准。
Claims
1. 一种发光二极管灯具, 包括:
一散热元件;
一反射罩, 具有一开口;
一侧射型透镜, 配置于该反射罩中, 且该侧射型透镜穿过该开口位于该反射 罩内; 以及
一发光元件, 配置于该散热元件及该侧射型透镜之间, 且该开口暴露出该发 光元件,
其中自该发光元件发出的光通过该侧射型透镜改变其光路径而投射至该反射 罩后, 再反射至该反射罩外。
2. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 该散热元件包括: 一散热本体; 以及
多个散热鳍片, 放射状地设置该本体上, 其中该本体具有多个镂空部。
3. 根据权利要求 2所述的发光二极管灯具, 其特征在于, 该散热本体呈碗 状。
4. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 该发光元件包括: 一发光二极管; 以及
一电路板, 其中该发光二极管配置于该电路板上, 而该电路板的部份夹置于 该散热本体及该反射罩之间。
5. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 该侧射型透镜包 括:
一透镜本体, 具有一反射面及环绕该反射面的一出光面; 以及
一反射层, 设置于该反射面, 而该发光元件投射出的光被该反射层反射后从 该出光面射出。
6. 根据权利要求 5所述的发光二极管灯具, 其特征在于, 该反射面为曲面。
7. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 该发光元件及该侧 射型透镜之间还具有一间隙。
8. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 该反射罩具有一第 一定位结构, 而该侧射型透镜具有一第二定位结构, 且该第一定位结构及该第二 定位结构的形状互补。
9. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 还包括多个锁固 件, 且这些锁固件穿过该发光元件并锁入该散热元件。
10. 根据权利要求 1所述的发光二极管灯具, 其特征在于, 还包括多个锁固 件, 且这些锁固件穿过该散热元件并锁入该反射罩。
11. 一种发光二极管灯具, 包括:
一散热组件;
一反射罩, 具有一开口, 其中该开口配置于相应于散热组件的一中心位置; 一侧射型透镜, 配置于该反射罩中, 且该侧射型透镜穿过该开口以位于该反 射罩内, 其中该侧射型透镜具有一顶凹反射面和环绕该顶凹反射面的一侧出光 面; 以及
一发光组件, 配置于由该侧射型透镜的该顶凹反射面和环绕该顶凹反射面的 该侧出光面所形成的一空间中且位于该散热组件上, 该散热组件及该侧射型透镜 之间, 且该开口暴露出该发光组件, 其中自该发光组件发出的光藉由该侧射型透 镜导向而投射至该反射罩, 且由该侧射型透镜所导向的光是平行地导向至该反射 罩外。
12. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 该散热组件包 括:
一散热本体; 以及
多个散热鳍片, 放射状地设置该本体上, 其中该本体具有多个镂空部。
13. 根据权利要求 12所述的发光二极管灯具, 其特征在于, 该散热本体呈碗 状。
14. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 该发光组件包 括:
一发光二极管; 以及
一电路板, 其中该发光二极管配置于该电路板上, 而该电路板的部份夹置于 该散热本体及该反射罩之间。
15. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 该发光组件及该 侧射型透镜之间还具有一间隙。
16. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 该反射罩具有一 第一定位结构, 而该侧射型透镜具有一第二定位结构, 且该第一定位结构及该第 二定位结构的形状互补。
17. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 还包括多个锁固 件, 且这些锁固件穿过该发光组件并锁入该散热组件。
18. 根据权利要求 11所述的发光二极管灯具, 其特征在于, 还包括多个锁固 件, 且这些锁固件穿过该散热组件并锁入该反射罩。
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