CN205678527U - A kind of blackboard illumination lamp - Google Patents
A kind of blackboard illumination lamp Download PDFInfo
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- CN205678527U CN205678527U CN201620546100.9U CN201620546100U CN205678527U CN 205678527 U CN205678527 U CN 205678527U CN 201620546100 U CN201620546100 U CN 201620546100U CN 205678527 U CN205678527 U CN 205678527U
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- blackboard
- lamp
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- illumination lamp
- fluorescent tube
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Abstract
This utility model relates to a kind of blackboard illumination lamp, the fluorescent tube that is connected on lamp socket including the lamp socket in the uncovered lamp housing in lower section, lamp housing, two ends, being arranged on the reflector above fluorescent tube and the power supply for lamp tube power supply, the cross section that fluorescent tube rises in described reflector reflection action part is connected in sequence by parabolic segment, horizontal linear section and three sections of line segments of angled straight lines section.At blackboard blackboard illumination lamp described in the utility model installed above, the illumination of blackboard can be made to reach more than 534lx, uniformity of illuminance reaches more than 0.92, and the UGR value near teacher position is almost ignored, and teacher's fundamental sensation is less than the existence of dazzle.
Description
[technical field]
This utility model relates to a kind of lighting, particularly relates to a kind of light fixture for blackboard illumination.
[background technology]
The purpose of classroom blackboard illumination is to provide good visual environment, it is ensured that Faculty and Students can be easily at blackboard
On write and read content on blackboard.Preferably blackboard illuminates it is ensured that have on blackboard vertical and well maintain average illumination
And uniformity of illuminance, will not Faculty and Students be produced uncomfortable dizzy when blackboard illumination lamp is installed in place
Light.
National Standard of the People's Republic of China's " the middle and primary schools' classroom lighting issued is revised by Ministry of Public Health and National Standards Commission
With illumination sanitary standard " (GB7793-2010) come into effect in May, 2011, and this standard explicitly points out, the maintenance of classroom blackboard
Average illumination is not lower than 500lx, and uniformity of illuminance is not lower than 0.8.But, " middle and primary schools' classroom lighting and illumination health
Standard " (GB7793-2010), although promulgating for many years, it is not enough that existing classroom blackboard lamp the most generally also exists maintenance average illumination
400lx, the uniformity of illuminance problem less than 0.7.Additionally, due to blackboard illumination lamp luminous intensity distribution design unreasonable, teacher with
Front-seat student produces can the most uncomfortable dazzle.
The position installed due to blackboard illumination lamp is relatively fixed, and is typically mounted at the top of blackboard, and position is higher than blackboard
Upper end, it is relatively big to the distance difference of the upper and lower side of blackboard, therefore, when applying traditional blackboard illumination lamp, blackboard lower end
Illumination often much smaller than the illumination of blackboard upper end, causes the problem that the uniformity of illuminance on blackboard vertical is the most on the low side.This Shen
Application No. 201520591846.7 utility model patent filed in 7 days Augusts in 2015 of asking someone discloses a kind of lighting,
Although its uniformity can reach 0.9, however it is necessary that light fixture reaches more than 1.1 meters with the horizontal range of blackboard, teacher is at dais
On say class hour, stand between blackboard lights and blackboard, dazzle is relatively big, feels more dazzling.
[summary of the invention]
For above-mentioned problems of the prior art, the purpose of this utility model is to provide one can make blackboard vertical
Maintain average illumination to be more than 0.9 more than 500lx, uniformity of illuminance, and teacher is in time giving lessons in position, dais the most imperceptible
The blackboard illumination lamp that dazzle exists.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of blackboard illumination lamp, is connected on lamp socket including the lamp socket in the uncovered lamp housing in lower section, lamp housing, two ends
Fluorescent tube, it is arranged on the reflector above fluorescent tube and for the power supply of lamp tube power supply, it is characterised in that fluorescent tube is risen by described reflector
The cross section of reflection action part is connected in sequence by parabolic segment, horizontal linear section and three sections of line segments of angled straight lines section.
Preferably, in above-mentioned blackboard illumination lamp, the upper end of described parabolic segment is parabolical summit, and lower end extends to
Lamp housing is near the lower limb of student side, and described horizontal linear section is tangent with parabolic segment, and described angled straight lines section is straight with level
The angle of line segment is 130-150 degree.
Further, in above-mentioned blackboard illumination lamp, described parabolic segment is selected from parabola x2=2Py (-3≤P≤-1)
In monotone increasing section.
Preferably, in above-mentioned blackboard illumination lamp, the centrage of described fluorescent tube is through the focus of reflector parabolic segment, instead
Light-ray condensing that fluorescent tube is sent by the reflective surface of tabula rasa also projects on blackboard surface.
Preferably, in above-mentioned blackboard illumination lamp, described lamp housing connects oriented blackboard direction near a side-lower of student
The baffle plate tilted.
Preferably, described reflector is the aluminium material matter or plastics material that tally chrome-plated surface processes at specular surface
Matter, specular reflectivity is more than 85%.
Further, in above-mentioned blackboard illumination lamp, described lamp socket is fixed in lamp housing by light holder support.
The beneficial effects of the utility model are as follows:
In this utility model, the light that fluorescent tube sends, under the reflection of the reflective surface of reflector, is assembled and projects
On blackboard surface, strengthen the light of directive blackboard lower end, blackboard upper end can be kept again simultaneously to have enough light and irradiate so that be whole
The illumination of block blackboard tends to uniform；Lamp housing connects, near a side-lower of student, the baffle plate that oriented blackboard direction tilts, and can hide
The light directive student side that gear fluorescent tube sends, it is also possible to the light sending fluorescent tube rises and guides the work reflexing to blackboard defence line
With；Computer simulation data show, at blackboard blackboard illumination lamp described in the utility model installed above, can make the photograph of blackboard
Degree reaches more than 534lx, and uniformity of illuminance reaches more than 0.92, and the UGR value near teacher position is almost ignored, Jiao Shiji
The existence of this imperceptible dazzle.
[accompanying drawing explanation]
Fig. 1 is the cross section structure sketch that this utility model is perpendicular to fluorescent tube centerline axis；
Fig. 2 is schematic perspective view of the present utility model；
Fig. 3 is high emulation optical analog luminous intensity distribution scatter chart of the present utility model；
Fig. 4 is the schematic top plan view in Dialux software building simulation classroom；
Fig. 5 is that UGR during this utility model simulation teacher position dazzle situation measures some direction of observation and layout viewing.
Wherein, 1-lamp housing, 2-lamp socket, 3-fluorescent tube, 4-reflector, 41-parabolic segment, 42-horizontal linear section, 43-tilts
Straightway, 5-power supply, 6-baffle plate, 7-light holder support, 8-classroom, 9-blackboard, 10-blackboard illumination lamp.
[detailed description of the invention]
Below in conjunction with specific embodiment, the utility model is described in further detail, but the comprised scope of this utility model does not limits
In this.
Embodiment 1
It is a kind of blackboard illumination lamp as shown in Figure 1-2, including the lamp socket 2, two in the uncovered lamp housing 1 in lower section, lamp housing 1 body
Hold the fluorescent tube 3 being connected on lamp socket 2, be arranged on the reflector 4 above fluorescent tube 3 and the power supply 5 for lamp tube power supply, described reflector
4 is the aluminium material matter processed through specular surface, and specular reflectivity is 88%, and fluorescent tube wherein rises the cross section of reflection action part
Being connected in sequence by parabolic segment 41, horizontal linear section 42 and 43 3 sections of line segments of angled straight lines section, described parabolic segment 41 is selected
From parabola x2Monotone increasing section in=-4y, its upper end is parabolical summit, and lower end extends to lamp housing near student side
Lower limb, described horizontal linear section 42 is tangent with parabolic segment 41, the folder of described angled straight lines section 43 and horizontal linear section 42
Angle is 140 degree, and fluorescent tube is sent by the centrage of fluorescent tube 3 through the focus of reflector parabolic segment 41, the reflective surface of reflector
Light-ray condensing also projects on blackboard surface.
Described fluorescent tube 3 is placed in the near focal point position of reflector parabolic segment 41, and the reflective surface of reflector 4 is by fluorescent tube 3
The light-ray condensing that goes out also projects on blackboard surface, and described lamp housing 1 connects oriented blackboard direction near the side-lower of student and tilts
Baffle plate 6, block the light directive student side that fluorescent tube 3 sends, the light simultaneously sent fluorescent tube 3 plays guiding and reflexes to blackboard
The effect in direction, described lamp socket 2 is fixed in lamp housing 1 by light holder support 7.
Fig. 3 is that this utility model is through computer simulation softward Tracepro simulation gained luminous intensity distribution substep curve chart, its maximum
Angle between light intensity and vertical axis is about 25 °, and the distribution of this luminous intensity distribution can strengthen the light of directive blackboard lower end, can protect again simultaneously
Card blackboard upper end has enough light and irradiates, therefore so that the illumination of monoblock blackboard tends to uniform.
Simulation experiment 1: fluorescent tube 3 is defined as the T8 fluorescent tube that power is 36W, a length of 1.2 meters, the length of lamp housing 1
It it is 1.23 meters.The luminous intensity distribution scatter chart of Computer Simulation Software Tracepro simulation gained is imported to Dialux software, as
Shown in Fig. 4, Dialux software is set up long 8 meters, wide 7 meters, the classroom 8 of high 3.2 meters between one, lean in end, classroom on wall and arrange
One block length 4 meters, high 1.2 meters, the blackboard 9 of thickness 0.05 meter, overhead 1.1 meters, blackboard lower end.Distance blackboard upper end level away from
From 0.6 meter, be arranged in parallel at vertical distance 0.1 meter the blackboard illumination lamp 10 described in 3 the present embodiment.
On blackboard, 16 are taken according to National Standard of the People's Republic of China " illumination measuring method " (GB/T 5700-2008)
Individual test point, simulation calculates the illumination of each test point.Computer simulation data show, blackboard average illumination is 534, small-sized photograph
Degree is 490lx, and maximal illumination is 577lx, and uniformity of illuminance reaches 0.92.
Next (UGR is more for the dazzle value when direction along blackboard length arranges row's UGR test point simulation teachers' instruction
Little, be less susceptible to feel lamp from dazzling or dazzle).The arrangement of UGR test point is as it is shown in figure 5, arrange 9 UGR test points altogether, often
Individual test point is spaced about 0.5 meter, and height is 1.75 meters of ground of distance, and direction of observation is Student oriented direction.
When the horizontal range of test point Yu blackboard is 0.5 meter, the numerical value recording UGR is as shown in table 1, and 9 test points are equal
Do not detect numerical value, when illustrating, according to the position shown in this simulative example, the blackboard illumination lamp described in the present embodiment is installed, teacher
Student in the observation classroom, position of 0.5 meter of blackboard of distance, UGR value is almost ignored.
Table 1: with row's UGR test point computational chart that blackboard horizontal range is 0.5 meter
Note: as reference, locus, four summits coordinate of blackboard 8 be respectively as follows: (8m, 5.5m, 2.3m), (8m,
1.5m, 2.3m), (8m, 1.5m, 1.1m), (8m, 5.5m, 1.1m), lower with.
When the horizontal range of test point Yu blackboard is 0.3 meter, the numerical value recording UGR is as shown in table 2, and 9 test points are equal
Do not detect numerical value, when illustrating, according to the position shown in this simulative example, the blackboard illumination lamp described in the present embodiment is installed, teacher
Student in the observation classroom, position of 0.3 meter of blackboard of distance, UGR value is almost ignored.
Table 2: with row's UGR test point computational chart that blackboard horizontal range is 0.3 meter
Simulation experiment 2: set up long 10 meters, wide 10 meters, the classroom of high 3.2 meters between one in Dialux software, at classroom end
Portion arranges a block length 4 meters, high 1.2 meters, the blackboard of thickness 0.05 meter by wall, and other simulated conditions are identical with simulation experiment 1, point
Cai Yong old money illumination in the utility model of Application No. 201520591846.7 filed in 7 days Augusts in 2015 of the applicant
Blackboard illumination lamp described in light fixture and the present embodiment is simulated experiment, and the horizontal range between lighting and blackboard is
0.6 meter, the simulated conditions of the two are identical, use same method test blackboard illumination and with the one of blackboard horizontal range 0.4 meter
The UGR value of row's test point, result shows: install the classroom of Application No. 201520591846.7 utility model old money lighting
In, the UGR value of test point is than test point UGR value mean height 3 in the classroom of the blackboard illumination lamp installed described in the present embodiment
Numerical value, and blackboard uniformity of illuminance is only 0.62, not up to national standard, and the blackboard illumination lamp described in the present embodiment is installed
Classroom blackboard uniformity of illuminance be 0.83, meet national standard.
The above, preferably specific embodiment the most of the present utility model, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art is in the technical scope that this utility model discloses, according to this practicality
Novel technical scheme and conceive equivalent or change in addition, all should contain in protection domain of the present utility model.
Claims (7)
1. a blackboard illumination lamp, the lamp being connected on lamp socket including the lamp socket in the uncovered lamp housing in lower section, lamp housing, two ends
Manage, be arranged on the reflector above fluorescent tube and the power supply for lamp tube power supply, it is characterised in that fluorescent tube is risen instead by described reflector
The cross section of light action part is connected in sequence by parabolic segment, horizontal linear section and three sections of line segments of angled straight lines section.
Blackboard illumination lamp the most according to claim 1, it is characterised in that the upper end of described parabolic segment is parabolical
Summit, lower end extends to the lamp housing lower limb near student side, and described horizontal linear section is tangent with parabolic segment, angled straight lines
Section is 130-150 degree with the angle of horizontal linear section.
Blackboard illumination lamp the most according to claim 2, it is characterised in that described parabolic segment is selected from parabola x2=2Py
Monotone increasing section in (-3≤P≤-1).
4. according to the blackboard illumination lamp according to any one of claim 1-3, it is characterised in that the centrage warp of described fluorescent tube
Cross the focus of reflector parabolic segment.
5. according to the blackboard illumination lamp according to any one of claim 1-3, it is characterised in that described lamp housing is near student's
One side-lower connects the baffle plate that oriented blackboard direction tilts.
Blackboard illumination lamp the most according to claim 4, it is characterised in that described reflector is to process through specular surface
The aluminium material matter of goods chrome-plated surface process or plastic material, specular reflectivity is more than 85%.
Blackboard illumination lamp the most according to claim 4, it is characterised in that described lamp socket is fixed on lamp by light holder support
In shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546100.9U CN205678527U (en) | 2016-06-07 | 2016-06-07 | A kind of blackboard illumination lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546100.9U CN205678527U (en) | 2016-06-07 | 2016-06-07 | A kind of blackboard illumination lamp |
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| Publication Number | Publication Date |
|---|---|
| CN205678527U true CN205678527U (en) | 2016-11-09 |
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ID=57433877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620546100.9U Active CN205678527U (en) | 2016-06-07 | 2016-06-07 | A kind of blackboard illumination lamp |
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| CN (1) | CN205678527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864696A (en) * | 2016-06-07 | 2016-08-17 | 广州市施亮照明科技有限公司 | Blackboard illumination lamp |
-
2016
- 2016-06-07 CN CN201620546100.9U patent/CN205678527U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864696A (en) * | 2016-06-07 | 2016-08-17 | 广州市施亮照明科技有限公司 | Blackboard illumination lamp |
| CN105864696B (en) * | 2016-06-07 | 2018-05-04 | 广州市施亮照明科技有限公司 | A kind of blackboard illumination lamp |
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