CN103185235A - Lighting module - Google Patents

Lighting module Download PDF

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Publication number
CN103185235A
CN103185235A CN2011104591223A CN201110459122A CN103185235A CN 103185235 A CN103185235 A CN 103185235A CN 2011104591223 A CN2011104591223 A CN 2011104591223A CN 201110459122 A CN201110459122 A CN 201110459122A CN 103185235 A CN103185235 A CN 103185235A
Authority
CN
China
Prior art keywords
face
lighting module
lamp guide
light
reflection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011104591223A
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Chinese (zh)
Inventor
林明传
陈金良
叶志庭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Wanshida LCD Co Ltd
Wintek Corp
Original Assignee
Dongguan Wanshida LCD Co Ltd
Wintek Corp
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 Dongguan Wanshida LCD Co Ltd, Wintek Corp filed Critical Dongguan Wanshida LCD Co Ltd
Priority to CN2011104591223A priority Critical patent/CN103185235A/en
Publication of CN103185235A publication Critical patent/CN103185235A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a lighting module which comprises a light guide rod, a light source and a reflection sleeve, wherein the light guide rod comprises a first end surface, a second end surface arranged opposite to the first end surface, and a cylindrical surface; the cylindrical surface is arranged between the first end surface and the second end surface; the cylindrical surface comprises a light-exiting surface and a reflection surface; the light source is adjacently arranged on the outer side on the first end surface of the light guide rod; the reflection sleeve is sheathed on the outer side on the second end surface of the light guide rod; the reflection sleeve is provided with a reflection chamber; the reflection chamber gradually shrinks inwards from the periphery so as to form a point angle; and a part of incident light of the light source is reflected to the reflection surface from the reflection chamber and then is further reflected to the light-exiting surface so as to be guided out, or is directly reflected to the light-exiting surface from the reflection chamber so as to be guided out.

Description

Lighting module
Technical field
The present invention relates to a kind of guiding device, and particularly relate to a kind of guiding device for the side direction light inlet and have the lighting module of this guiding device.
Background technology
At present, if desire to replace traditional T5/T8 type fluorescence formula fluorescent tube with the short side-light type LED lamp guide of length, still needing solves the problem of luminous efficiency.Now be described as follows.
Please refer to Figure 1A, it illustrates the schematic diagram of known side-light type LED lighting module 1-1.Shown in Figure 1A, lighting module 1-1 comprises light source 12 and lamp guide 102.Light source 12 is arranged at end face 1021 outsides of lamp guide 102, as the light beam L of light source 12 11When being incident to lamp guide 102, at least about have ± 2 ° light can be via other end 1022 light leaks of lamp guide 102, and can't be by the exiting surface 1023a bright dipping of lamp guide 102.Therefore, the luminous efficiency of lighting module 1-1 is not good.
Please then refer to Figure 1B, it illustrates the schematic diagram of another known side-light type LED lighting module 1-2.Lighting module 1-2 shown in Figure 1B comprises light source 12 and lamp guide 102.Light source 12 shown in Figure 1B and lamp guide 102 are identical with Figure 1A, do not repeat them here its thin portion structure.Other end 1022 that it should be noted that the lamp guide 102 of lighting module 1-2 is equiped with reflector plate P, as the light beam L of light source 12 13When in lamp guide 102, marching to the below of reflector plate P, light beam L 13Can reflex to exiting surface and bright dipping via reflector plate P.Thereby improve light beam by the problem of other end 1022 light leaks of lamp guide 102.Yet, as the light beam L of light source 12 12When in lamp guide 102, marching to the top of reflector plate P, light beam L 12Can reflex to end face 1021 and light leak via reflector plate P.The guiding device of lighting module 1-2 still can't solve the light leak problem effectively, and luminous efficiency still has the space of improvement.
Summary of the invention
The present invention relates to a kind of guiding device and have this guiding device lighting module, go into the light leak problem of light source by the special construction of guiding device to reduce side direction, and promote luminous efficiency.
According to a first aspect of the invention, propose a kind of lighting module, comprise lamp guide, light source and reflective sleeve.Lamp guide comprises first end face, relative first end face and second end face and the cylinder established.Cylinder is arranged between first end face and second end face, and cylinder comprises exiting surface and reflecting surface.Light source is adjacent to first end face outside of lamp guide.Reflective sleeve is sheathed on second end face outside of lamp guide, reflective sleeve has reflection cavity, reflection cavity forms drift angle from the inside convergent of its periphery, wherein, a part of incident light of light source reflexes to exiting surface again with bright dipping after reflexing to reflecting surface via reflection cavity, or directly reflexes to exiting surface with bright dipping via reflection cavity.
For there is better understanding above-mentioned and other aspect of the present invention, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1A illustrates the profile of the lighting module of not installing reflecting plate.
Figure 1B illustrates the profile of the lighting module of installing reflector plate.
Fig. 2 A illustrates the section explosive view according to the lighting module of the embodiment of the invention.
Fig. 2 B illustrates the profile according to the lighting module of the embodiment of the invention.
Fig. 2 C illustrates the local amplification profile according to the lamp guide of the embodiment of the invention and reflective sleeve.
Fig. 2 D～2E illustrates the schematic diagram according to the reflective sleeve of the embodiment of the invention.
Fig. 3 A illustrates the section explosive view according to the lighting module of the embodiment of the invention.
Fig. 3 B illustrates the profile according to the lighting module of the embodiment of the invention.
Fig. 3 C illustrates the local amplification profile according to the lamp guide of the embodiment of the invention and reflective sleeve.
Fig. 3 D～3E illustrates the schematic diagram according to the reflective sleeve of the embodiment of the invention.
Fig. 4 illustrates the schematic diagram according to the lighting module of the embodiment of the invention.
Description of reference numerals
1-1,1-2,2,3,4: lighting module 12,22,32,42: light source
20,30,40: guiding device 202,302,402: lamp guide
204,304,404: reflective sleeve 2021,3021: the first end faces
2022,3022: the second end faces 2023,3023: cylinder
2023a, 3023a: exiting surface 2023b, 3023b: reflecting surface
2041,3041: reflection cavity 2042,3042: tail end
C1, C1 ': summit C2: central point
L 11～L 13, L 2～L 5: light beam
P: reflector plate
T: the crown top of burner
X21, X22, X31, X32: echo area
Θ 21～Θ 23, Θ 31～Θ 33: the angle
The specific embodiment
First embodiment
Please refer to Fig. 2 A, it illustrates the section explosive view according to the lighting module 2 of first embodiment of the invention.Shown in Fig. 2 A, lighting module 2 comprises guiding device 20 and light source 22.Guiding device 20 comprises lamp guide 202 and reflective sleeve 204.Lamp guide 202 comprises first end face 2021, second end face 2022 and cylinder 2023.In this embodiment, first end face 2021 and second end face 2022 are essentially the plane, and cylinder 2023 is essentially the face of cylinder.Second end face, 2022 relative first end faces 2021 and establishing, and second end face 2022 is parallel to first end face 2021 in fact.Cylinder 2023 is arranged between first end face 2021 and second end face 2022.Cylinder 2023 comprises exiting surface 2023a and reflecting surface 2023b.Reflecting surface 2023b for example with the bottom of surface treatment cylinder 2023 to form reflecting surface, perhaps directly attach reflector material in the bottom of cylinder 2023 to form reflecting surface.Light source 22 is adjacent to first end face, 2021 outsides of lamp guide 202.Reflective sleeve 204 is sheathed on second end face, 2022 outsides of lamp guide 202, and reflective sleeve 204 comprises reflection cavity 2041, has the first echo area X21 and the second echo area X22.
Please refer to Fig. 2 B, it illustrates the generalized section according to the lighting module 2 of first embodiment of the invention.In this embodiment, be that example explains with the incident light of different angles.Shown in Fig. 2 B, the light beam L of light source 22 2Towards the direction incident of the first echo area X21, light beam L 2After being incident to the first echo area X21 of reflection cavity 2041 (being illustrated in Fig. 2 A), the first echo area X21 is with light beam L 2Reflex to reflecting surface 2023b.Then, light beam L 2Reflex to exiting surface 2023a bright dipping via reflecting surface 2023b.Another light beam L of light source 22 3Towards the direction incident of the second echo area X22, light beam L 3After being incident to the second echo area X22 of reflection cavity 2041 (being illustrated in Fig. 2 A), the second echo area X22 is directly with light beam L 3Reflex to exiting surface 2023a bright dipping.In this embodiment, be incident to the light beam L of reflection cavity 2041 2And light beam L 3Spend to the ranges of incidence angles of-2 degree between+2 in fact.
Please refer to Fig. 2 C, it illustrates the local amplification profile according to the guiding device 20 of first embodiment of the invention.Shown in Fig. 2 C, has drift angle Θ between the first echo area X21 and the second echo area X22 21, the second echo area X22 and reflecting surface 2023b have the first angle Θ 22, the first echo area X21 and exiting surface 2023a have the second angle Θ 23The summit C1 of the first echo area X21 and the second echo area X22 be symmetrical in lamp guide 202 second end face 2022 (being illustrated in Fig. 2 A) central point C2 and arrange.That is to say the drift angle Θ that the first echo area X21 and the second echo area X22 are folded 21Correspond to the position of the central point C2 of second end face 2022.
In this embodiment, the first angle Θ 22Greater than 90 degree, the second angle Θ 23Equal the first angle Θ in fact 22, preferably, drift angle Θ 21In fact between 100 degree between 170 degree, but not as limit.It should be noted that drift angle Θ 21Angular range light beam more effectively is exported to exiting surface, have the usefulness of the bright dipping that promotes lighting module 2 and the advantage of light-emitting uniformity concurrently.In addition, consider the influence of manufacturing tolerance factor, the size of angle described herein all contains the understandable error range of persons skilled in the art.
In Fig. 2 A～2C, only illustrate the profile of reflective sleeve 204.In fact, the cavity body structure of reflective sleeve 204 can comprise taper seat, pyramidal plane, serrated face, wavy surface or hemisphere face, is not restricted.Shown in Fig. 2 D～2E, it illustrates the schematic diagram of the reflective sleeve 204 with different reflection cavities 2041.For instance, the reflection cavity 2041 of the reflective sleeve 204 that illustrates of Fig. 2 D is taper seat.Reflection cavity 2041 shown in Fig. 2 E is pyramidal plane.In this embodiment, the reflection cavity 2041 of reflective sleeve 204 can comprise specular material, metal coating material, reflection-type Merlon (Polycarbonate, PC) or other have the material of high reflectance and low absorptivity.Preferably, can select the reflection-type Merlon (PC) of high reflectance and low absorptivity as the material of reflection cavity 2041, to promote reflection efficiency.In addition, shown in Fig. 2 D～2E, reflective sleeve 204 has tail end 2042, and tail end 2042 corresponds to crown top of burner T and designs, and therefore, tail end 2042 can be socketed in the crown top of burner T, makes guiding device 20 directly to be installed on the common on the market lamp socket.
Second embodiment
Please refer to Fig. 3 A～3B, Fig. 3 A illustrates the section explosive view according to the lighting module 3 of second embodiment of the invention.Fig. 3 B illustrates the generalized section according to the lighting module 3 of second embodiment of the invention.Shown in Fig. 3 A～3B, lighting module 3 comprises guiding device 30 and light source 32.Guiding device 30 comprises lamp guide 302 and reflective sleeve 304.Lamp guide 302 comprises first end face 3021, second end face 3022 and cylinder 3023.In this embodiment, first end face 3021 and second end face 3022 are essentially plane end face, and cylinder 3023 is essentially the face of cylinder.Cylinder 3023 comprises exiting surface 3023a and reflecting surface 3023b.Reflecting surface 3023b for example with the bottom of surface treatment cylinder 3023 to form reflecting surface, perhaps directly attach reflector material in the bottom of cylinder 3023 to form reflecting surface.Reflective sleeve 304 comprises reflection cavity 3041, and reflection cavity 3041 has the first echo area X31 and the second echo area X32.Light source 32 and lamp guide 302 will repeat no more its detail characteristic similar in appearance to light source 22 and the lamp guide 202 of first embodiment at this.Reflective sleeve 304 can be sheathed on second end face, 3022 outsides of lamp guide 302, and reflective sleeve 304 comprises reflection cavity 3041, and reflection cavity 3041 has the first echo area X31 and the second echo area X32.
It should be noted that the reflection cavity 3041 at this embodiment is unsymmetric structure.Further, asymmetric second end face 3022 in lamp guide 302 of the first echo area X31 and the second echo area X32 arranges.Shown in Fig. 3 C, the drift angle Θ that the first echo area X31 and the second echo area X32 are folded 31Center C 2 ' the position of departing from second end face 3022 (being illustrated in Fig. 3 A).Further say, summit C1 ' arrives the distance of reflecting surface 3023b greater than summit C1 ' to the distance of exiting surface 3023a, so that more incident beam reflexes to reflecting surface 3023b via the first echo area X31, reflex to exiting surface 3023a with bright dipping via reflecting surface 3023b again, further be lifted out optical efficiency.
Shown in Fig. 3 B, be example with the incident light of different angles, the light beam L of light source 32 4Towards the direction incident of the first echo area X31, light beam L 4After being incident to the first echo area X31 of reflection cavity 3041 (being illustrated in Fig. 3 A), the first echo area X31 is with light beam L 4Reflex to reflecting surface 3023b.Then, light beam L 4Reflex to exiting surface 3023a bright dipping via reflecting surface 3023b.Another light beam L of light source 32 5Towards the direction incident of the second echo area X32, light beam L 5After being incident to the second echo area X32 of reflection cavity 3041 (being illustrated in Fig. 3 A), the second echo area X32 is directly with light beam L 5Reflex to exiting surface 3023a bright dipping.In this embodiment, be incident to the light beam L of reflection cavity 3041 4And light beam L 5Spend to the ranges of incidence angles of-2 degree between+2 in fact.
Please refer to Fig. 3 C, it illustrates the part section enlarged drawing according to the guiding device 30 of second embodiment of the invention.Shown in Fig. 3 C, has drift angle Θ between the first echo area X31 and the second echo area X32 31, and the second echo area X32 and reflecting surface 3023b have the first angle Θ 32, the first echo area X31 and exiting surface 3023a have the second angle Θ 33In this embodiment, drift angle Θ 31Preferably spend between 170 degree drift angle Θ between 100 in fact 31The drift angle of angular range can more effectively light beam be exported to exiting surface, have the usefulness of the bright dipping that promotes lighting module 3 and the advantage of light-emitting uniformity concurrently.In addition, the first angle Θ 32Greater than 90 degree, the second angle Θ 33In fact less than the first angle Θ 32It should be noted that the influence of considering the manufacturing tolerance factor, the size of angle described herein all contains the understandable error range of persons skilled in the art.
In Fig. 3 A～3C, only illustrate the profile of reflective sleeve 304.In fact, the cavity body structure of reflective sleeve 304 can comprise taper seat, pyramidal plane, serrated face, wavy surface or hemisphere face, is not restricted.Shown in Fig. 3 D～3E, it illustrates reflective sleeve 304 schematic diagrames with multi-form reflection cavity 3041.For instance, the reflection cavity 3041 of the reflective sleeve 304 that illustrates of Fig. 3 D is asymmetrical taper seat.Reflection cavity 3041 shown in Fig. 3 E is asymmetrical pyramidal plane.Reflection cavity 3041 can comprise the material that is same as aforesaid reflection cavity 2041, does not repeat them here.In addition, shown in Fig. 3 D～3E, reflective sleeve 304 has tail end 3042, and tail end 3042 corresponds to crown top of burner T and designs, and tail end 3042 can be socketed in the crown top of burner T, makes guiding device 30 directly to be installed on the common on the market lamp socket.
The application of the lighting module of above-described embodiment
Please refer to Fig. 4, it illustrates the schematic diagram according to the lighting module 4 of the embodiment of the invention.Lighting module 4 comprises guiding device 40, light source 42 and crown top of burner T.Guiding device 40 comprises lamp guide 402 and reflective sleeve 404.Lamp guide 402 can above-mentioned arbitrary embodiment the form of lamp guide.As shown in Figure 4, lamp guide 402 is columned leaded light cylinder for example, and certainly, lamp guide 402 can also be the leaded light cylinder of corner post shape, is not restricted.Reflective sleeve 404 can be the form of the reflective sleeve of above-mentioned arbitrary embodiment.In this embodiment, lighting module 4 also comprises crown top of burner T, is sheathed on the afterbody of reflective sleeve 404.Linking by crown top of burner T can be arranged at lighting module 4 on the lamp socket (not showing).
In sum, the lighting module of the above embodiment of the present invention has reflective sleeve, by the special reflection cavity of reflective sleeve, can make light source bright dipping and reduce the light leak of light source equably.Especially, the lighting module of the above embodiment of the present invention can promote luminous efficiency greater than or near 79%, reach the lamp guide (luminous efficiency is less than 71%) that only installs reflector plate additional compared to the lamp guide that does not install reflective sleeve additional (luminous efficiency about 41.5%), the luminous efficiency of the lighting module of the above embodiment of the present invention all significantly promotes.In addition, the reflective sleeve of the above embodiment of the present invention can be sheathed on the lamp guide outer end, and therefore, lamp guide can use the mode of ejection formation to make, and does not need to make heavy industry for lamp guide, can simplify technology.And reflective sleeve has the afterbody that designs corresponding to the crown top of burner, makes the crown top of burner can directly be sheathed on the afterbody of reflective sleeve.Therefore, can be by being sheathed on the crown top of burner of reflective sleeve, lighting module or guiding device with the above embodiment of the present invention directly are installed on the common on the market lamp socket, meet the demand in market.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention defines and is as the criterion when looking claim.

Claims (8)

1. lighting module comprises:
Lamp guide comprises:
First end face;
Second end face, this first end face and establishing relatively; And
Cylinder is arranged between this first end face and this second end face, and this cylinder comprises exiting surface and reflecting surface;
Light source is adjacent to outside this first end face of this lamp guide; And
Reflective sleeve, be sheathed on this second end face outside of this lamp guide, this reflective sleeve has reflection cavity, this reflection cavity forms drift angle from the inside convergent of its periphery, wherein, a part of incident light of this light source reflexes to via this reflection cavity and reflexes to this exiting surface again behind this reflecting surface and directly reflex to this exiting surface with bright dipping with bright dipping or via this reflection cavity.
2. lighting module as claimed in claim 1, wherein this reflection cavity comprises first echo area and second echo area.
3. lighting module as claimed in claim 1, wherein this drift angle departs from the center of this second end face of this lamp guide.
4. lighting module as claimed in claim 1, wherein this drift angle corresponds to the center of this second end face of this lamp guide.
5. lighting module as claimed in claim 1 also comprises the crown top of burner, in order to be sheathed on the afterbody of this reflective sleeve.
6. lighting module as claimed in claim 1, wherein this second end face is plane end face.
7. lighting module as claimed in claim 1, wherein this part incident light is between the incident light of+2 degree to the incident angles of-2 degree.
8. lighting module as claimed in claim 1, wherein this drift angle between 100 degree between 170 degree.
CN2011104591223A 2011-12-31 2011-12-31 Lighting module Pending CN103185235A (en)

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Application Number Priority Date Filing Date Title
CN2011104591223A CN103185235A (en) 2011-12-31 2011-12-31 Lighting module

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Publication Number Publication Date
CN103185235A true CN103185235A (en) 2013-07-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295943A (en) * 2013-07-16 2015-01-21 鸿富锦精密工业（深圳）有限公司 Light-emitting diode lamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006031941A (en) * 2004-07-12 2006-02-02 Sharp Corp Planar light source unit
CN201302065Y (en) * 2008-11-28 2009-09-02 常州丰盛光电科技股份有限公司 LED fluorescent lamp
CN201302115Y (en) * 2008-11-28 2009-09-02 常州丰盛光电科技股份有限公司 LED fluorescent lamp
CN201731428U (en) * 2006-08-15 2011-02-02 宜兰汽车配件制造(平湖)有限公司 Glow stick

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006031941A (en) * 2004-07-12 2006-02-02 Sharp Corp Planar light source unit
CN201731428U (en) * 2006-08-15 2011-02-02 宜兰汽车配件制造(平湖)有限公司 Glow stick
CN201302065Y (en) * 2008-11-28 2009-09-02 常州丰盛光电科技股份有限公司 LED fluorescent lamp
CN201302115Y (en) * 2008-11-28 2009-09-02 常州丰盛光电科技股份有限公司 LED fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295943A (en) * 2013-07-16 2015-01-21 鸿富锦精密工业（深圳）有限公司 Light-emitting diode lamp

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Application publication date: 20130703