WO2019153390A1 - Led灯带 - Google Patents

Led灯带 Download PDF

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Publication number
WO2019153390A1
WO2019153390A1 PCT/CN2018/077823 CN2018077823W WO2019153390A1 WO 2019153390 A1 WO2019153390 A1 WO 2019153390A1 CN 2018077823 W CN2018077823 W CN 2018077823W WO 2019153390 A1 WO2019153390 A1 WO 2019153390A1
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WO
WIPO (PCT)
Prior art keywords
led light
strip
light source
groove
soft rubber
Prior art date
Application number
PCT/CN2018/077823
Other languages
English (en)
French (fr)
Inventor
曾茂进
董永哲
邓万锋
Original Assignee
漳州立达信光电子科技有限公司
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Application filed by 漳州立达信光电子科技有限公司 filed Critical 漳州立达信光电子科技有限公司
Publication of WO2019153390A1 publication Critical patent/WO2019153390A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/26—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of rope form, e.g. LED lighting ropes, or of tubular form
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21V7/04—Optical design
    • 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
    • F21V7/04—Optical design
    • F21V7/046—Optical design with involute curvature
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F21Y2113/17—Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]

Definitions

  • the utility model belongs to the technical field of lighting lamps, and more particularly to an LED lamp belt.
  • the existing LED light strip is usually formed by two-color extrusion molding using a light-diffusing soft rubber and a reflective soft rubber.
  • the reflective soft rubber is provided with a groove at the joint of the light-diffusing soft rubber, and the LED light source strip is disposed on the side wall of the groove. On one side, the light emitted by the LED light source strip is diffused by the light diffusing soft glue in the groove, and is reflected by the surface of the groove to emit the LED light strip.
  • one side of the side wall of the groove is not provided with the light source strip, and after receiving the light emitted from the LED light source strip, it cannot be directly reflected out of the groove. A part of the light reflected from a corner will be reflected multiple times in the groove, and finally absorbed by the reflective soft rubber, resulting in low light-emitting efficiency of the LED strip. If you want to improve the light extraction efficiency, you usually need to increase the power of each LED light-emitting component in the LED light source strip. As the power is increased, the heat generated by the illuminating is increased, causing the soft rubber and the LED illuminating element to age easily, thereby shortening the life of the LED strip.
  • the object of the present invention is to provide an LED lamp strip to solve the technical problem of low light extraction efficiency of the LED strip in the prior art.
  • the technical solution adopted by the present invention is to provide an LED lamp strip, comprising a soft colloid and an LED light source strip disposed in the soft gel body, the soft colloid comprising a reflective soft rubber and a light diffusing soft rubber.
  • the reflective soft gel is provided with a groove, the LED light source strip is disposed on the first surface of the groove, and the LED light source strip emits light toward the groove, the groove and the first
  • the opposite second side is curved, the second side is coated with a reflective coating, and the light diffusing soft plastic covers the groove.
  • the soft colloid further includes a transparent soft rubber filling the groove and filling from a bottom of the groove to a position where the LED light source strip is submerged, the light diffusing soft rubber covering The reflective soft rubber and the transparent soft rubber.
  • the transparent soft rubber is a convex lens structure.
  • the LED light source strip is provided with a plurality of evenly spaced LED light emitting elements.
  • the plurality of LED light emitting elements are all of the same color temperature; or the plurality of LED light emitting elements are divided into two types: a high color temperature LED light emitting element and a low color temperature LED light emitting element, and the plurality of the low color temperature LED light emitting elements are evenly spaced Arranging, each of the high color temperature LED light emitting elements is respectively disposed at a midpoint of two adjacent low color temperature LED light emitting elements.
  • the LED light strip is energized by a constant current input method.
  • the light diffusing soft gel is a convex lens structure.
  • the LED light source strip is a soft LED light source strip.
  • the second surface is a partial curved surface, the second surface includes a vertical plane and a horizontal plane, the horizontal plane is located at a bottom of the groove, and the vertical plane is opposite to the first surface, A transition surface is formed between the horizontal plane and the vertical plane.
  • the second surface is a pure curved surface, one side of the second surface is connected to the first surface, and the other side of the second surface is a side of the opening of the groove.
  • the LED lamp strip provided by the utility model has the beneficial effects that: compared with the prior art, the LED lamp strip provided by the utility model sets the surface of the groove opposite to the LED light source strip to be curved and coated on the surface.
  • the reflective coating allows the light to be emitted more out of the LED light strip, improving the light extraction efficiency, and does not need to increase the power of the LED light source strip, thereby avoiding the high heat caused by the power increase, thereby prolonging the life of the LED light strip.
  • the second side of the LED light strip provided by the embodiment of the present invention is a vertical cross-sectional view of a partial curved surface.
  • the second side of the LED light strip provided by the embodiment of the present invention is a partially curved perspective view.
  • the second side of the LED light strip with transparent soft rubber provided by the embodiment of the present invention is a vertical cross-sectional view of a partial curved surface.
  • the second side of the LED strip with transparent soft rubber shown in FIG. 3 is a partially curved perspective view.
  • the second side of the LED strip provided by the embodiment of the present invention is a vertical cross-sectional view of a pure curved surface.
  • the second side of the LED light strip provided by the embodiment of the present invention is a perspective view of a pure curved surface.
  • the second side of the LED light strip with transparent soft rubber provided by the embodiment of the present invention is a vertical cross-sectional view of a pure curved surface.
  • the second side of the LED light strip with transparent soft rubber provided by the embodiment of the present invention is a perspective view of a pure curved surface.
  • the LED light-emitting elements provided by the embodiments of the present invention are front views of LED light source strips of the same color temperature.
  • the LED strip includes a soft gel 1 and an LED light source strip 2 disposed in the soft gel 1.
  • the soft gel 1 includes a reflective soft rubber 11 and a light diffusing soft rubber 12, and the reflective soft rubber 11 is provided with a groove 111 and an LED light source strip. 2 is disposed on the first surface 1111 of the recess 111, and the LED light source strip 2 emits light into the recess 111.
  • the second surface 1112 of the recess 111 opposite to the first surface 1111 is curved, and the second surface 1112 is coated with reflection.
  • the coating (not shown), the light-diffusing soft rubber 12 is extruded by a two-color machine, filling the groove 111 of the reflective soft rubber 11 and overflowing the outside of the groove 111 to cover the opening of the groove 111.
  • the reflective coating is a highly reflective coating having a reflectance of 0.9 or greater.
  • the reflective soft rubber 11 is made of a white light-shielding material to help reflect light from the LED light source strip 2.
  • the light diffusing soft rubber 12 is made of a colored translucent light guiding material, so that the LED light strip can emit light of different colors to enhance the luminous effect.
  • the LED lamp strip provided by the utility model has a surface opposite to the LED light source strip 2 in a curved shape compared with the prior art, and a reflective coating is applied on the surface to make the light more
  • the LED light is emitted outside the belt to improve the light extraction efficiency, thereby increasing the luminous flux, and does not need to increase the power of the LED light source strip 2, thereby avoiding the high heat caused by the power increase, thereby prolonging the life of the LED light strip.
  • the second surface 1112 is a partial curved surface, and the second surface 1112 includes a vertical plane and a horizontal plane.
  • the first surface 1111 of the groove 111 is a side wall in a vertical state
  • the second surface 1112 includes a bottom surface of the groove 111 and another side wall of the groove 111 opposite to the first surface 1111
  • the groove 111 The bottom surface of the groove is a horizontal plane
  • the other side wall of the groove 111 opposite to the first surface 1111 is a vertical plane
  • a bottom surface between the bottom surface and the side wall of the second surface 1112 is a transition surface.
  • the transition surface can make the light from the original right angle connected to the LED light source strip 2 more reflected out of the groove 111 to improve the luminous flux.
  • the second surface 1112 is a pure curved surface, and the curvature is smaller than a partial curved surface of the second surface 1112. Close to the straight line, one side of the second surface 1112 is connected to one side of the first surface 1111, and the other side of the second surface 1112 is extended to one side of the opening of the groove 111. In this case, the stronger the ability to reflect light out of the groove 111, the greater the luminous flux than the second face 1112 is.
  • the soft gel 1 further comprises a transparent soft rubber 13, which is filled with the groove 111 and filled from the bottom of the groove 111 to the LED light source strip 2 is submerged.
  • the position of the light-diffusing soft rubber 12 covers the reflective soft rubber 11 and the transparent soft rubber 13.
  • the transparent soft rubber 13 has a higher light transmittance than the light-diffusing soft rubber 12, and the light-diffusing soft rubber 12 is mainly used to diverge the light emitted from the LED light source strip 2.
  • the transparent soft rubber 13 is first placed in the groove 111, so that the light emitted from the LED light source strip 2 can be emitted out of the groove 111 as soon as possible, thereby improving the optical efficiency, thereby further increasing the luminous flux.
  • the transparent soft rubber 13 is a convex lens structure, and the vertical cross section of the transparent soft rubber 13 is in the shape of a bulb, thereby diffusing light.
  • the LED light source strip 2 is provided with a plurality of evenly spaced LED light emitting elements 21 to enable the LED strip to emit light uniformly.
  • the plurality of LED light-emitting elements 21 are all of the same color temperature, and the LED light strip can only emit a cold color temperature or a warm color temperature. Light.
  • the plurality of LED light-emitting elements 21 are divided into a high color temperature LED light-emitting element 211 and a low color temperature LED light-emitting component 212.
  • the plurality of low color temperature LED light emitting elements 212 are evenly spaced, and each of the high color temperature LED light emitting elements 211 is respectively disposed at a midpoint of the adjacent two low color temperature LED light emitting elements 212.
  • the LED strip can have a moderate color temperature.
  • the energization of the LED strip is performed by a constant current input method.
  • the plurality of LED light-emitting elements 21 on the LED light source strip 2 are connected in series, if the power is supplied by the constant voltage power source, the current is increased due to the temperature rise, and the safety is lowered.
  • the current passing through each of the LED light-emitting elements 21 can be maintained to be uniform, thereby improving safety.
  • the light diffusing soft rubber 12 is a convex lens structure, and the vertical cross section of the light diffusing soft rubber 12 is in the shape of a bulb to diffuse light.
  • the LED light source strip 2 is a soft LED light source strip, which cooperates with the overall soft rubber structure, so that the LED light strip can be twisted at will, and the user can install the LED light strip at any position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

一种LED灯带，包括软胶体（1）和设于软胶体（1）内的LED光源条（2），软胶体（1）包括反光软胶（11）和光扩散软胶（12），反光软胶（11）设有凹槽（111），LED光源条（2）设于凹槽（111）的第一面（1111），LED光源条（2）朝凹槽（111）内发射光线，凹槽（111）的与第一面（1111）相对的第二面（1112）呈曲面状，第二面（1112）涂覆反射涂层，光扩散软胶（12）覆盖凹槽（111）。该LED灯带将凹槽（111）的与LED光源条（2）相对的面（1112）设置成曲面状，并在该面（1112）上涂覆反射涂层，使光线能更多地射出LED灯带外，提高出光效率，并且不需要提高LED光源条（2）的功率，避免了功率提高所引起的高热量，从而延长LED灯带的寿命。

Description

LED灯带
本实用新型属于照明灯具技术领域，更具体地说，是涉及一种LED灯带。
现有的LED灯带通常采用光扩散软胶和反光软胶进行双色挤出成型，其中反光软胶在其与光扩散软胶的连接处设置凹槽，LED光源条设于凹槽侧壁的一侧，LED光源条所发出的光线经凹槽内的光扩散软胶进行扩散，并经凹槽表面反射后发射出LED灯带外。
但是，这种技术方案却存在一定的问题——凹槽侧壁不设置LED光源条的一侧角落在接收到来自LED光源条发射出的光线后，无法直接将其反射出凹槽外，这一角落所反射出的部分光线会在凹槽内经过多次反射，最后被反光软胶吸收，导致LED灯带的出光效率低。如果想提高出光效率，通常需要加大LED光源条里每一个LED发光元件的功率。随着功率的提高，发光所产生的热量提高，造成软胶和LED发光元件易老化，从而缩短LED灯带的寿命。
以上不足，有待改进。
本实用新型的目的在于提供一种LED灯带，以解决现有技术中LED灯带存在的出光效率低的技术问题。
为实现上述目的，本实用新型采用的技术方案是：提供一种LED灯带，包括软胶体和设于所述软胶体内的LED光源条，所述软胶体包括反光软胶和光扩散软胶，所述反光软胶设有凹槽，所述LED光源条设于所述凹槽的第一面，所述LED光源条朝所述凹槽内发射光线，所述凹槽的与所述第一面相对的第二面呈曲面状，所述第二面涂覆反射涂层，所述光扩散软胶覆盖所述凹槽。
进一步地，所述软胶体还包括透明软胶，所述透明软胶填充所述凹槽并从所述凹槽的底部填充至所述LED光源条被淹没的位置，所述光扩散软胶覆盖所述反光软胶和所述透明软胶。
进一步地，所述透明软胶为凸透镜结构。
进一步地，所述LED光源条设有多个均匀间隔排列的LED发光元件。
进一步地，多个所述LED发光元件均为同一色温；或多个所述LED发光元件分为高色温LED发光元件和低色温LED发光元件两种，多个所述低色温LED发光元件均匀间隔排列，各个所述高色温LED发光元件分别设于相邻两个所述低色温LED发光元件的中点。
进一步地，所述LED灯带的通电采用恒流输入方式。
进一步地，所述光扩散软胶为凸透镜结构。
进一步地，所述LED光源条为软性LED光源条。
进一步地，所述第二面为部分曲面，所述第二面包括竖直平面和水平面，所述水平面位于所述凹槽的底部，所述竖直平面和所述第一面相对，所述水平面和所述竖直平面之间为过渡曲面。
进一步地，所述第二面为纯曲面，所述第二面的一边和所述第一面连接，所述第二面的另一边为所述凹槽的开口的一边。
本实用新型提供的LED灯带的有益效果在于：与现有技术相比，本实用新型提供的LED灯带将凹槽的与LED光源条相对的面设置成曲面状，并在该面上涂覆反射涂层，使光线能更多地射出LED灯带外，提高出光效率，并且不需要提高LED光源条的功率，避免了功率提高所引起的高热量，从而延长LED灯带的寿命。
 图1
为本实用新型实施例提供的LED灯带的第二面为部分曲面的竖向剖视图。
图2
为本实用新型实施例提供的LED灯带的第二面为部分曲面的立体图。
图3
为本实用新型实施例提供的含有透明软胶的LED灯带的第二面为部分曲面的竖向剖视图。
图4
为图3所示的含有透明软胶的LED灯带的第二面为部分曲面的立体图。
图5
为本实用新型实施例提供的LED灯带的第二面为纯曲面的竖向剖视图。
图6
为本实用新型实施例提供的LED灯带的第二面为纯曲面的立体图。
图7
为本实用新型实施例提供的含有透明软胶的LED灯带的第二面为纯曲面的竖向剖视图。
图8
为本实用新型实施例提供的含有透明软胶的LED灯带的第二面为纯曲面的立体图。
图9
为本实用新型实施例提供的LED发光元件为同一色温的LED光源条的正视图。
图10
为本实用新型实施例提供的LED发光元件为两种色温的LED光源条的正视图
为了使本实用新型所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。
请一并参阅图1及图2，现对本实用新型提供的LED灯带进行说明。LED灯带，包括软胶体1和设于软胶体1内的LED光源条2，其中，软胶体1包括反光软胶11和光扩散软胶12，反光软胶11设有凹槽111，LED光源条2设于凹槽111的第一面1111，LED光源条2朝凹槽111内发射光线，凹槽111的与第一面1111相对的第二面1112呈曲面状，第二面1112涂覆反射涂层（图中未示出），光扩散软胶12通过双色机挤出成型，填充反光软胶11的凹槽111并且溢出凹槽111外，覆盖凹槽111的开口。
优选地，反射涂层为高反射涂层，反射率为0.9以上。
优选地，反光软胶11由白色遮光材料制作而成，有助于反射来自LED光源条2发出的光线。
优选地，光扩散软胶12采用带颜色的半透明导光材料制作而成，使LED灯带能够发出不同颜色的光，增强发光效果。
本实用新型提供的LED灯带，与现有技术相比，将凹槽111的与LED光源条2相对的面设置成曲面状，并在该面上涂覆反射涂层，使光线能更多地射出LED灯带外，提高出光效率，从而提高光通量，并且不需要提高LED光源条2的功率，避免了功率提高所引起的高热量，从而延长LED灯带的寿命。
进一步地，请参阅图1至图4，作为本实用新型提供的LED灯带的一种具体实施方式，第二面1112为部分曲面，第二面1112包括竖直平面和水平面。具体地，凹槽111的第一面1111为呈竖直状态的侧壁，第二面1112包括凹槽111的底面以及凹槽111的与第一面1111相对的另一侧壁，凹槽111的底面为水平面，凹槽111的与第一面1111相对的另一侧壁为竖直平面，第二面1112中的底面和侧壁之间为过渡曲面。如此，相比于底面和侧壁呈直角连接，过渡曲面可以使原来直角连接的角落接收到LED光源条2发出的光能更多地反射出凹槽111外，提高光通量。
进一步地，请参阅图5至图8，作为本实用新型提供的LED灯带的一种具体实施方式，第二面1112为纯曲面，曲率相比于第二面1112为部分曲面的更小，接近直线，第二面1112的一边连接于第一面1111的一边，第二面1112的另一边延伸为凹槽111开口的一边。此情况下，将光线反射出凹槽111的能力越强，光通量相比于第二面1112为部分曲面的更大。
进一步地，请参阅图3、图4、图7及图8，软胶体1还包括透明软胶13，透明软胶13填充凹槽111并从凹槽111的底部填充至LED光源条2被淹没的位置，光扩散软胶12覆盖反光软胶11和透明软胶13。透明软胶13相比于光扩散软胶12的透光率高，且光扩散软胶12主要用于发散LED光源条2发出的光。在凹槽111内先置入透明软胶13，使LED光源条2发出的光能尽快发射出凹槽111外，提高光学效率，从而进一步提高光通量。
进一步地，请参阅图3，透明软胶13为凸透镜结构，透明软胶13的竖向横截面呈灯泡状，从而使光线扩散。
进一步地，参阅图9， LED光源条2设有多个均匀间隔排列的LED发光元件21，使LED灯带能够发光均匀。
进一步地，请参阅图9，作为本实用新型提供的LED灯带的一种具体实施方式，多个LED发光元件21均为同一色温，此时LED灯带只能发出一种冷色温或暖色温的光。
进一步地，请参阅图9及图10，作为本实用新型提供的LED灯带的一种具体实施方式，多个LED发光元件21分为高色温LED发光元件211和低色温LED发光组件212两种，多个低色温LED发光元件212均匀间隔排列，各个高色温LED发光元件211分别设于相邻两个低色温LED发光元件212的中点。此情况下，LED灯带可具有适中的色温。
进一步地，LED灯带的通电采用恒流输入方式。当LED光源条2上的多个LED发光元件21串联时，如果用恒压电源供电，由于温升，电流增大，安全性降低。采用恒流电源，才能维持每一个LED发光元件21通过的电流保持一致，提高安全性。
进一步地，请参阅图1，光扩散软胶12为凸透镜结构，光扩散软胶12的竖向横截面呈灯泡状，使光线扩散。
进一步地， LED光源条2为软性LED光源条，配合整体软胶结构，使LED灯带可以任意扭动，用户可将LED灯带安装于任意位置。
以上仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。
1- 软胶体； 2-LED 光源条； 11- 反光软胶； 12- 光扩散软胶； 13- 透明软胶； 111- 凹槽； 1111- 第一面； 1112- 第二面； 21-LED 发光元件； 211- 高色温 LED 发光组件； 212- 低色温 LED 发光组件。

Claims (10)

  1. LED灯带，包括软胶体和设于所述软胶体内的LED光源条，其特征在于：所述软胶体包括反光软胶和光扩散软胶，所述反光软胶设有凹槽，所述LED光源条设于所述凹槽的第一面，所述LED光源条朝所述凹槽内发射光线，所述凹槽的与所述第一面相对的第二面呈曲面状，所述第二面涂覆反射涂层，所述光扩散软胶覆盖所述凹槽。
  2. 如权利要求1所述的LED灯带，其特征在于：所述软胶体还包括透明软胶，所述透明软胶填充所述凹槽并从所述凹槽的底部填充至所述LED光源条被淹没的位置，所述光扩散软胶覆盖所述反光软胶和所述透明软胶。
  3. 如权利要求2所述的LED灯带，其特征在于：所述透明软胶为凸透镜结构。
  4. 如权利要求1所述的LED灯带，其特征在于：所述LED光源条设有多个均匀间隔排列的LED发光元件。
  5. 如权利要求4所述的LED灯带，其特征在于：多个所述LED发光元件均为同一色温；或多个所述LED发光元件分为高色温LED发光元件和低色温LED发光元件两种，多个所述低色温LED发光元件均匀间隔排列，各个所述高色温LED发光元件分别设于相邻两个所述低色温LED发光元件的中点。
  6. 如权利要求1所述的LED灯带，其特征在于：所述LED灯带的通电采用恒流输入方式。
  7. 如权利要求1所述的LED灯带，其特征在于：所述光扩散软胶为凸透镜结构。
  8. 如权利要求1所述的LED灯带，其特征在于：所述LED光源条为软性LED光源条。
  9. 如权利要求1至8任一项所述的LED灯带，其特征在于：所述第二面为部分曲面，所述第二面包括竖直平面和水平面，所述水平面位于所述凹槽的底部，所述竖直平面和所述第一面相对，所述水平面和所述竖直平面之间为过渡曲面。
  10. 如权利要求1至8任一项所述的LED灯带，其特征在于：所述第二面为纯曲面，所述第二面的一边和所述第一面连接，所述第二面的另一边为所述凹槽的开口的一边。
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