CN203477962U - LED fluorescent lamp - Google Patents
LED fluorescent lamp Download PDFInfo
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- CN203477962U CN203477962U CN201320578168.1U CN201320578168U CN203477962U CN 203477962 U CN203477962 U CN 203477962U CN 201320578168 U CN201320578168 U CN 201320578168U CN 203477962 U CN203477962 U CN 203477962U
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- face
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- spline
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Abstract
The utility model discloses an LED fluorescent lamp which comprises a lamp body, a first PCB arranged on the inner side of the lamp body longitudinally, a plurality of LED light sources arranged on the first PCB and a light-guiding board, wherein the lower portion of the light-guiding board is arranged inside the lamp body in a clamped mode, and the top of the light-guiding board shields a light emitting opening of the lamp body. The light-guiding board is divided into a light incident face, a reflecting bottom face, a reflecting side face and a light emitting top face longitudinally, the light incident face of the light-guiding board right faces towards the LED light sources arranged on the first PCB, the reflecting bottom face gradually rises from the bottom of the light incident face and becomes a mild smooth spline surface at the position close to the reflecting side face, the reflecting side face is connected with the reflecting bottom face and the light emitting top face and is parallel to the light incident face, and the reflecting bottom face and the reflecting side face are coated with light reflective coatings. According to the LED fluorescent lamp, the light source side face is adopted for emitting light, the reflecting face of the light-guiding board is coated with the light reflective coatings with the high reflecting rate, the emitted light is even, soft and high in luminous efficiency, and the luminous efficiency of the LED fluorescent lamp is higher than that the luminous efficiency of like products by more than 20 %.
Description
Technical field
The utility model relates to a kind of light fixture, especially a kind of LED fluorescent lamp.
Background technology
Along with the rise of LED, LED fluorescent lamp also becomes the main power in fluorescent lamp family gradually in recent years.Conventional LED fluorescent lamp is comprised of the pcb board with LED light source, lampshade and diffuser plate, and the LED fluorescent lamp of use diffuser plate often shows dazzle, and part is too bright, so human eye can produce sense of discomfort, and the fluorescent lamp illumination of this structure is also inadequate.For this situation, in industry, someone starts to adopt LGP, or LGP+diffuser plate substitutes traditional diffuser plate, LGP is the acrylic/PC sheet material that utilizes optical grade, then with thering is high reflectivity and the hitech materials of extinction not, acryl sheet material bottom surface in optical grade stamps light guiding points with UV screen printing technology, the light that utilizes optical grade acryl plates to draw to send from lamp is in the stop on optical grade acryl sheet material surface, when light is mapped to each light guiding points, reverberation can be toward all angles diffusion, then destroying conditioned reflex penetrates by LGP is positive, by various density, light guiding points not of uniform size, can make LGP uniformly light-emitting.
LGP divides by shape at present: flat board, and LGP is seen as rectangle from light inlet; Clapboard: claim again swash plate, while from light inlet be seen as be thick be thin wedgewise (triangle) shape.Flat light guide plate is thick and heavy, is straight down type guide light, is about to illuminator (fluorescent tube or LED) and is positioned over side under LGP, and this structure light-emitting uniformity is also inadequate; Although clapboard has alleviated weight to a certain extent, for the secondary light-distribution curve of light source, do not do optimal design, the uniformity is not high yet, and light efficiency is low.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model be to provide a kind of new structure, luminous evenly, LED fluorescent lamp that light efficiency is high.
The technical solution adopted in the utility model is: a kind of LED fluorescent lamp, comprise lamp body, be arranged on the first pcb board of lamp body longitudinal medial, be fixed on the some LED light sources on the first pcb board, and bottom holding is in lamp body and the LGP of top cover lamp body light-emitting window, described LGP is longitudinally being divided into incidence surface, reflection bottom face, mirrored sides and bright dipping end face, the incidence surface of described LGP is over against the some LED light sources on the first pcb board, described reflection bottom face for raising gradually and near the mild Smoothing spline curved surface in mirrored sides place from incidence surface bottom, described mirrored sides connects reflection bottom face and bright dipping end face and parallel with incidence surface, described reflection bottom face, mirrored sides is coated with reflecting coating.
Described reflection bottom face is that four sections of spline surfaces that are smoothly connected form, described four sections of spline surfaces are the first spline surfaces from incidence surface to mirrored sides successively, the second spline surface, the 3rd spline surface, the 4th spline surface, described the first spline surface, the second spline surface, the 3rd spline surface, the transverse width of the 4th spline surface is than being 15.5826:11.2004:16.5991:10.4762, wherein, the cross-section curve central angle of the first spline surface is 4 °, the cross-section curve central angle of the second spline surface is 21 °, the 3rd spline surface is the plane at 25 ° of inclination angles, the cross-section curve central angle of the 4th spline surface is 20 °, described incidence surface, reflection bottom face, mirrored sides and bright dipping end face are 32.5656:53.8583:17.9610:56.6929 at the Length Ratio of LGP cross section.
Described LGP is 60 ° at the rising angle of bright dipping end face, and the incidence angle of described bright dipping end face is θ
3-, meet θ
3-be less than the critical angle A of bright dipping end face, sinA=1/n wherein, n is that LGP is with respect to the refractive index of air.
Described LGP is that the acryl plates extrusion molding of high printing opacity forms.
On described lamp body, near mirrored sides one side of described LGP, be provided with the fixed cap of lightguide plate fixing.
Described LED fluorescent lamp also comprises: two side covers of seal lamps end of body, lay respectively at two side covers and the second pcb board of being connected with the first pcb board two ends with the 3rd pcb board, for being connected the plug-in unit of external power source and the second pcb board, the 3rd pcb board, described plug-in unit respectively has two and be arranged in two side covers at lamp body two ends, described two side covers are connected with lamp body by fixed connecting piece.
The bright dipping end face of described LGP is plane or cambered surface.
The beneficial effects of the utility model:
The utility model LED fluorescent lamp adopts light source lateral emitting, the reflecting surface of LGP applies the reflecting coating of high reflectance, reflecting surface for for raising gradually and near the mild Smoothing spline curved surface in mirrored sides place, the light of outgoing is even, soft, and light efficiency is high from incidence surface bottom;
Reflection bottom face is that four sections of spline surfaces that are smoothly connected form, these section of spline surface draws concrete size and angle through optics software simulation, can make the outgoing of light source obtain best angle of reflection, 60 ° of best beam angles, light secondary reflection number of times in LGP is low, thereby makes light evenly and efficiently higher;
LGP is that the acryl plates extrusion molding of high printing opacity forms, and extrusion process is compared with Shooting Technique, makes the length of LGP unrestricted, is difficult for producing deformation;
The side of lamp body is provided with fixed cap, for lightguide plate fixing, makes the assembling of LGP and dismantles convenient;
The bright dipping end face of LGP is plane or cambered surface, makes the profile of fluorescent lamp more diversified.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.
Fig. 1 is the stereogram of a kind of LED fluorescent lamp of the utility model;
Fig. 2 is the explosive view of a kind of LED fluorescent lamp of the utility model;
Fig. 3 is the profile of a kind of LED fluorescent lamp of the utility model;
Fig. 4 is the LGP cross section mark schematic diagram of a kind of LED fluorescent lamp of the utility model;
Fig. 5 is the bright dipping index path of the utility model LED fluorescent lamp.
The specific embodiment
Shown in Fig. 1-Fig. 3, a LED fluorescent lamp, comprise lamp body 1, be arranged on lamp body 1 longitudinal medial the first pcb board 2, be fixed on some LED light sources 3 on the first pcb board 2, bottom holding in lamp body 1 and two side covers 11,12 of the LGP 4 of top cover lamp body 1 light-emitting window, sealing lamp body 1 end, lay respectively at two side covers 11,12 and the second pcb board 6 of being connected with the first pcb board 2 two ends with the 3rd pcb board 7, for being connected the plug-in unit 8 of external power source and the second pcb board 6, the 3rd pcb board 7.
As shown in the figure, LGP 4 is longitudinally being divided into incidence surface 41, reflection bottom face 42, mirrored sides 43 and bright dipping end face 44, the incidence surface 41 of LGP 4 is over against the some LED light sources 3 on the first pcb board 2, reflection bottom face 42 for raising gradually and near the mild Smoothing spline curved surface in mirrored sides place from incidence surface 41 bottoms, mirrored sides 43 connects reflection bottom face 42 and bright dipping end face 44 and parallel with incidence surface 41, and reflection bottom face 42, mirrored sides 43 are coated with reflecting coating.
As mentioned above, the utility model LED fluorescent lamp adopts light source lateral emitting, the reflecting surface of LGP 4 applies the reflecting coating of high reflectance, reflecting surface for for raising gradually and near the mild Smoothing spline curved surface in mirrored sides place from incidence surface 41 bottoms, the light of outgoing is even, soft, and light efficiency is high.
As further optimization of the present utility model, as shown in Figure 4, reflection bottom face 42 is that four sections of spline surfaces that are smoothly connected form, four sections of spline surfaces are the first spline surface S1 from incidence surface 41 to mirrored sides 43 successively, the second spline surface S2, the 3rd spline surface S3, the 4th spline surface S4, the first spline surface S1, the second spline surface S2, the 3rd spline surface S3, the transverse width of the 4th spline surface S4 is than being 15.5826:11.2004:16.5991:10.4762, wherein, the cross-section curve central angle of the first spline surface S1 is 4 °, the cross-section curve central angle of the second spline surface S2 is 21 °, the 3rd spline surface S3 is the plane at 25 ° of inclination angles, the cross-section curve central angle of the 4th spline surface S4 is 20 °, incidence surface 41, reflection bottom face 42, mirrored sides 43 and bright dipping end face 44 are 32.5656:53.8583:17.9610:56.6929 at the Length Ratio of LGP 4 cross sections.
Of the present utility modelly go out photoreduction process and principle is: see Fig. 5, light incident incidence surface 41, establishing LGP 4 is n with respect to the refractive index of air, according to refraction principle, shooting angle θ
1=arcsin ((sin θ)/n), light process incidence surface 41, diffuse reflection in reflection bottom face 42 or mirrored sides 43, according to principle of reflection, shooting angle=incidence angle, θ
2'=θ
2, light after 43 reflections of reflection bottom face 42 or mirrored sides from 44 outgoing of bright dipping end face, according to refraction principle, θ
3'=arcsin ((sin θ) * n), the rising angle of the utility model LED fluorescent lamp is 60 ° of half-angles, requires efficiency to be greater than 80% simultaneously, because reflection bottom face 42 or mirrored sides 43 are diffuse surface, θ
2'=θ
2± 30 °; The incidence angle of bright dipping end face 44 is θ
3-, meet θ
3-be less than the critical angle A of bright dipping end face 44, according to TIR total reflection law, sinA=1/n, if θ
3>A can cause part light in bright dipping end face 44 total reflection back reflective bottom surface 42 or mirrored sides 43, carry out secondary reflection, cause Efficiency Decreasing, therefore the spline surface of LGP 4 of the present utility model draws concrete size and angle through optics software simulation, can make the outgoing of light source obtain best angle of reflection, 60 ° of best beam angles, light secondary reflection number of times in LGP is low, thereby makes light evenly and efficiently higher.
As shown in Figure 1, plug-in unit 8 respectively has two and be arranged in two side cover 11,12, two side covers 11,12 and be connected with lamp body 1 by fixed connecting piece at lamp body 1 two ends, and this fixed connecting piece is screw.
In addition, LGP 4 is for the acryl plates extrusion molding of high printing opacity forms, and extrusion process is compared with Shooting Technique, makes the length of LGP 4 unrestricted, is difficult for producing deformation.
As shown in the figure, on lamp body 1, near mirrored sides 43 1 sides of LGP 4, be provided with the fixed cap 5 of lightguide plate fixing 4, for lightguide plate fixing 4, make the assembling of LGP 4 and dismantle convenient.
In addition, in the utility model, the bright dipping end face 44 of LGP 4 is plane or cambered surface, makes the profile of fluorescent lamp more diversified.
The foregoing is only preferential embodiment of the present utility model, the utility model is not limited to above-mentioned embodiment, as long as within the technical scheme that realizes the utility model object with basic identical means all belongs to protection domain of the present utility model.
Claims (7)
1. a LED fluorescent lamp, comprise lamp body (1), be arranged on first pcb board (2) of lamp body (1) longitudinal medial, be fixed on the some LED light sources (3) on the first pcb board (2), and bottom holding is in lamp body (1) and the LGP (4) of top cover lamp body (1) light-emitting window, described LGP (4) is longitudinally being divided into incidence surface (41), reflection bottom face (42), mirrored sides (43) and bright dipping end face (44), it is characterized in that: the incidence surface (41) of described LGP (4) is over against the some LED light sources (3) on the first pcb board (2), described reflection bottom face (42) for raising gradually and locating mild Smoothing spline curved surface near mirrored sides (43) from incidence surface (41) bottom, described mirrored sides (43) connects reflection bottom face (42) and bright dipping end face (44) and parallel with incidence surface (41), described reflection bottom face (42), mirrored sides (43) is coated with reflecting coating.
2. a kind of LED fluorescent lamp according to claim 1, it is characterized in that: described reflection bottom face (42) is that four sections of spline surfaces that are smoothly connected form, described four sections of spline surfaces are the first spline surface (S1) from incidence surface (41) to mirrored sides (43) successively, the second spline surface (S2), the 3rd spline surface (S3), the 4th spline surface (S4), described the first spline surface (S1), the second spline surface (S2), the 3rd spline surface (S3), the transverse width of the 4th spline surface (S4) is than being 15.5826:11.2004:16.5991:10.4762, wherein, the cross-section curve central angle of the first spline surface (S1) is 4 °, the cross-section curve central angle of the second spline surface (S2) is 21 °, the 3rd spline surface (S3) is the plane at 25 ° of inclination angles, the cross-section curve central angle of the 4th spline surface (S4) is 20 °, described incidence surface (41), reflection bottom face (42), mirrored sides (43) and bright dipping end face (44) are 32.5656:53.8583:17.9610:56.6929 at the Length Ratio of LGP (4) cross section.
3. a kind of LED fluorescent lamp according to claim 1 and 2, is characterized in that: described LGP (4) is 60 ° at the rising angle of bright dipping end face (44), and the incidence angle of described bright dipping end face (44) is θ
3-, meet θ
3-be less than the critical angle A of bright dipping end face (44), sinA=1/n wherein, n is that LGP (4) is with respect to the refractive index of air.
4. a kind of LED fluorescent lamp according to claim 1, is characterized in that: described LGP (4) forms for the acryl plates extrusion molding of high printing opacity.
5. a kind of LED fluorescent lamp according to claim 1, is characterized in that: upper mirrored sides (43) one sides near described LGP (4) of described lamp body (1) are provided with the fixed cap (5) of lightguide plate fixing (4).
6. a kind of LED fluorescent lamp according to claim 1, characterized by further comprising: two side covers (11,12) of sealing lamp body (1) end, lay respectively at two side covers (11,12) and the second pcb board (6) of being connected with the first pcb board (2) two ends with the 3rd pcb board (7), for being connected the plug-in unit (8) of external power source and the second pcb board (6), the 3rd pcb board (7), described plug-in unit (8) respectively has two and be arranged in two side covers (11,12) at lamp body (1) two ends, described two side covers (11,12) are connected with lamp body (1) by fixed connecting piece.
7. a kind of LED fluorescent lamp according to claim 1, is characterized in that: the bright dipping end face (44) of described LGP (4) is plane or cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320578168.1U CN203477962U (en) | 2013-09-17 | 2013-09-17 | LED fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320578168.1U CN203477962U (en) | 2013-09-17 | 2013-09-17 | LED fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477962U true CN203477962U (en) | 2014-03-12 |
Family
ID=50226289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320578168.1U Withdrawn - After Issue CN203477962U (en) | 2013-09-17 | 2013-09-17 | LED fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477962U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486471A (en) * | 2013-09-17 | 2014-01-01 | 周玉龙 | LED daylight lamp |
| CN104165287A (en) * | 2014-03-18 | 2014-11-26 | 深圳市艾比森光电股份有限公司 | Linear frame lamp |
-
2013
- 2013-09-17 CN CN201320578168.1U patent/CN203477962U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486471A (en) * | 2013-09-17 | 2014-01-01 | 周玉龙 | LED daylight lamp |
| CN103486471B (en) * | 2013-09-17 | 2015-12-16 | 周玉龙 | A kind of LED daylight lamp |
| CN104165287A (en) * | 2014-03-18 | 2014-11-26 | 深圳市艾比森光电股份有限公司 | Linear frame lamp |
| CN104165287B (en) * | 2014-03-18 | 2017-01-04 | 深圳市艾比森光电股份有限公司 | Linear bearings lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151216 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |