CN201137873Y - Light distribution cup and road lamp adopting same - Google Patents
Light distribution cup and road lamp adopting same Download PDFInfo
- Publication number
- CN201137873Y CN201137873Y CNU2007200597893U CN200720059789U CN201137873Y CN 201137873 Y CN201137873 Y CN 201137873Y CN U2007200597893 U CNU2007200597893 U CN U2007200597893U CN 200720059789 U CN200720059789 U CN 200720059789U CN 201137873 Y CN201137873 Y CN 201137873Y
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- China
- Prior art keywords
- cup
- intensity distribution
- luminous intensity
- rim
- rising angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a light distribution cup and a street lamp which adopts the light distribution cup, wherein the light distribution cup comprises cup body, the center portion of the bottom of the cup is used for installing a light source, the bottom of the cup is in oblong shape, the inner surface of the cup wall is a curved cambered surface, and the cup wall is arranged around the periphery of the cup body and forms an oblong cup mouth. The street lamp which adopts the light distribution cup comprises a lamp stand, a light distribution cup which is installed on the top portion of the lamp stand, and a light source is installed in the light distribution cup, the direction of the long edge of the light distribution cup mouth is the same with that of the street, the invention has the advantages of homogenous light spots, saving the number of street lamps and the like, and the light distribution cup is suitable for being used in designs of street lamps and relative lamps.
Description
Technical field
The invention still further relates to a kind of lighting accessory of realizing described method, particularly a kind of luminous intensity distribution cup; The invention still further relates to a kind of light fixture, a kind of street lamp that uses above-mentioned luminous intensity distribution cup.
Background technology
Street lamp generally comprises lamp stand, is installed in the lamp holder on lamp stand top, and the luminous intensity distribution cup is installed in the lamp holder, is provided with light source in the luminous intensity distribution cup.The light that spot light sends is the radiation of lambert's body to solid space, for road lighting, we only need to the illumination of next direction just much of that, so, the effect of luminous intensity distribution cup just is the light that spot light makes progress and horizontal direction is dispersed is reflected downwards, to improve illumination efficiency.Existing luminous intensity distribution cup generally is trumpet-shaped, light is after the effect of luminous intensity distribution cup, form the hot spot of a circle, the luminous intensity distribution cup of this structure, its reflecting wall designs not enough science, part light need be through secondary or repeatedly could be penetrated outside the luminous intensity distribution cup after the reflection, even has part light to reflect away, and causes the waste of luminous energy to a certain extent; Moreover, because shining the road surface, this luminous intensity distribution cup forms circular light spot, and like this, the light of this luminous intensity distribution cup reflection just has part and shines the outside, road, and the street lamp that has part and road opposite side again overlaps the waste of the luminous energy that causes; Simultaneously, because street lamp is shorter in the length direction distribution of road, so also the continuity that more street lamp could keep road brightness need be installed in unit length.
Summary of the invention
The technical problem to be solved in the present invention is: provides a kind of and can send rectangular light spots, and the light emission rate height, the brightness height, uniform luminous intensity distribution cup throws light on.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of luminous intensity distribution cup, at the bottom of comprising glass and wall of cup, the cup end and wall of cup inner surface are provided with reflector layer, cup end central authorities are used to install light source, it is characterized in that: the cup end is a rectangle, and described wall of cup inner surface is an inner concave arc surface, wall of cup encloses around the cup edge to be put, and constitutes rectangular rim of a cup.
The invention has the beneficial effects as follows: because rim of a cup is a rectangle, can produce rectangular hot spot, make the present invention to use, guarantee that so on the one hand light penetrates the rectangle that is shaped as of rim of a cup at long and narrow space; Because the wall of cup inner surface is an inner concave arc surface, and wall of cup encloses around the cup edge to be put, and constitutes rectangular rim of a cup, makes reflection ray can produce the rectangular light spots similar to main spot, both superpose again, and brightness of illumination is higher, and hot spot is more even, and illumination efficiency is higher.
Technique scheme can also further be improved by following additional technical feature:
A kind of luminous intensity distribution cup, at the bottom of comprising glass and wall of cup, the cup end and wall of cup inner surface are provided with reflector layer, cup end central authorities are used to install light source, it is characterized in that: the cup end is a rectangle, and described wall of cup inner surface is an inner concave arc surface, wall of cup encloses around the cup edge to be put, and constitutes rectangular rim of a cup.
Its main rising angle is a predetermined value, the inner concave arc surface of described wall of cup is the free form surface that calculates with iterative Integral Method according to Snell's law, the rising angle of the reflection ray of rim of a cup is identical with main rising angle on this free form surface, by rising angle predetermined angular range in the gradual change of rim of a cup to the reflection ray at the cup end.
Described rim of a cup is to the rising angle even variation of the reflection ray of cup end inwall.
On luminous intensity distribution cup length direction, its main rising angle is 30 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 30 °～0 ° gradual change.
On luminous intensity distribution cup width, its main rising angle is 62 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 62 °～30 ° gradual changes.
Described glass of end central authorities are provided with a light source installing hole.
Described reflector layer is the electroplated aluminum layer.
Another technical problem that the present invention will solve is: provides a kind of and can form rectangular light spots on the ground, and the emitting brightness height, more uniform street lamp throws light on.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of street lamp comprises lamp stand, is installed in the luminous intensity distribution cup at lamp stand top, is provided with light source in the luminous intensity distribution cup, and described luminous intensity distribution cup is above-mentioned luminous intensity distribution cup, and the long limit of rim of a cup and road direction are in the same way.
Described luminous intensity distribution cup the invention has the beneficial effects as follows: owing to can produce rectangle, the brightness height, uniform hot spot throws light on, compare with the hot spot of circle, under identical illumination intensity, distance between two lamp stands can be separated by farther, and the quantity that street lamp is installed on the road of unit length like this can still less reach and save street lamp quantity and energy-conservation effect.
Described lamp stand top is equipped with a plurality of luminous intensity distribution cups, respectively is provided with a light source in each luminous intensity distribution cup.
Described a plurality of luminous intensity distribution cup proper alignment or be staggered.
Described light source is a great power LED.
Description of drawings
The present invention will be further described below in conjunction with drawings and Examples,
Fig. 1 is the structural representation of luminous intensity distribution cup of the present invention;
Fig. 2 is the structural representation of luminous intensity distribution cup inner wall section of the present invention;
Fig. 3 a is a luminous intensity distribution cup width luminous intensity distribution scheme schematic diagram of the present invention;
Fig. 3 b is a luminous intensity distribution cup length direction luminous intensity distribution scheme schematic diagram of the present invention;
Fig. 4 is the Mathematical Modeling of road of the present invention wall of cup curved surface cross section curve;
Fig. 5 is the structural representation of first embodiment of street lamp of the present invention;
Fig. 6 is one of the structural representation of second embodiment of street lamp of the present invention;
Fig. 7 be street lamp of the present invention second embodiment lamp holder structural representation two;
Fig. 8 be street lamp of the present invention second embodiment lamp holder structural representation three.
The specific embodiment
Referring to Fig. 1 and Fig. 2, at first introduce the structure of luminous intensity distribution cup 1 of the present invention and manufacture method thereof through and light distributing method principle of the present invention is described and adopts the structure of the street lamp of this luminous intensity distribution cup 1.Described luminous intensity distribution cup 1 is a rectangular housing, the cup end 11 is a rectangle, central authorities are provided with the light source installing hole, in the present invention, described light source should adopt spot light 14, as long as its light that sends is the radiation of lambert's body, with regard to prior art, this light source can be selected great power LED, tengsten lamp or fluorescent lamp etc. for use.Four sides wall of cup 12,13 encloses and is set to rectangular rim of a cup, and the cup end 11 and wall of cup 12,13 inner surfaces all are provided with reflector layer, and this reflector layer can be deielectric-coating such as TiO
2, SiO
2Or MgF
2, also can be metal film as aluminize, silver-plated, can also be directly at the bottom of cup 11 and wall of cup 12,13 polish smooth and form, as long as it can reach suitable reflecting effect.
Disposable the reflexing to outside the luminous intensity distribution cup 1 of light that the design of wall of cup 12,13 should be able to be sent the spot light 14 of 11 central authorities at the bottom of the cup, reduce the light energy losses that light causes in more than 1 reflection of luminous intensity distribution cup, just can accomplish this point according to Snell's law by the rational design wall of cup 12,13 and the angle at the cup end 11, certainly for the angle of controlling reflection ray one among a small circle in variation, shape and each regional brightness of hot spot of the hot spot that final control luminous intensity distribution cup 1 throws away preferably are designed to inner concave arc surface with wall of cup 12,13.
Being designed to the structure and the design principle of example explanation luminous intensity distribution cup 1 of the present invention below with the wall of cup 13 of the length direction of luminous intensity distribution cup 1, with reference to figure 3b and Fig. 4, is that light source 14 places are that initial point is set up two-dimensional coordinate with 11 central authorities at the bottom of the cup, and vertical direction is a Y-axis, and horizontal direction is an X-axis.The determining of rising angle of main spot at first is described, the rising angle of so-called main spot promptly is directly to penetrate the light of luminous intensity distribution cup and the maximum angle of luminous intensity distribution cup axis (promptly being the Y-axis among Fig. 4), also can be described as and crosses direct that light that penetrates in luminous intensity distribution cup edge and the angle of luminous intensity distribution cup axis just.The angle of emergence of this main spot has very big influence to shape, the brightness of hot spot, under the constant situation of distance between light source 14 and the target illumination thing, the angle of emergence is big more, and the area of hot spot is also just big more, and brightness is low more, vice versa, the designer can use Pythagorean theorem to determine according to actual needs, if the present invention is applied on the street lamp, can be 30 ° with reference to the angle of emergence then for example, setting height(from bottom) is 12M, obtains the hot spot that width is 13.8M.
Determining of reflection ray rising angle is described once more, the rising angle of so-called reflection ray, refer to the reflection ray that shines every bit on luminous intensity distribution cup 1 inwall 13 and the angle of luminous intensity distribution cup 1 axis, among the present invention, reflection ray is because through the reflection of wall of cup 13 on four sides, the stack hot spot of its composition also must be the rectangle similar to main spot, control the rising angle of the reflection ray of every bit on the wall of cup 13 again by the curvature of design wall of cup 13, thereby the shape and the brightness of control stack hot spot, allow the be added to more weak zone of peripheral light of main spot of this stack hot spot, finally make that the hot spot brightness ratio that obtains through this pendant light cup luminous intensity distribution 1 is more even.At first determine the maximum angle of emergence, promptly be to shine the reflection ray of wall of cup 13 upper edges and the angle of luminous intensity distribution cup 1 axis, the objective of the invention is to allow the be added to more weak zone of peripheral light of main spot of stack hot spot, at this moment, this maximum angle of emergence should equate with the angle of emergence of main spot, like this, the light that shines rim of a cup edge, the left side just can be reflected to the edge of the main spot rightmost side; Then, design shines the angle of emergence geometric ratio of the reflection ray of the following wall of cup in rim of a cup edge and dwindles, and reflection ray moves towards main spot is inner, like this, just can form the stack hot spot of main spot reinforcement from outside to inside, makes that final hot spot overall brightness is even.
The wall of cup curved surface of realizing above-mentioned reflection function is the free form surface that calculates with iterative Integral Method according to Snell's law in fact, and with reference to figure 4, the curve of this curved surface cross section satisfies following equation group:
y
n+1＝y
n+Δy
n
x
n+1＝x
n+Δx
n
The present invention is 10MM with wall of cup 13 height (being the Y-axis coordinate of rim of a cup), cup bottom width degree is 6MM, the rising angle of main spot is 30 °, the rising angle that shines the reflection ray of luminous intensity distribution cup inwall 13 fades to the coordinate of putting on the definite curve of example with 30 °～0 ° geometric ratio successively by rim of a cup to the cup end, has so the wall of cup height is divided into 1,000 points:
Δy＝0.01
Δθ＝0.03°
N is the current point of numerical computations in the following formula, and n+1 is the more following of numerical computations, Δ x, and Δ y is the trace of curve in x and the variation of y direction.By primary condition:
α
0＝0
x
0＝3
y
0＝0
Can calculate the coordinate of each point on the curve with the numerical computation method of integration iteration from the bottom up by above-mentioned equation group always, as first coordinate is (3.00577,0.01), second coordinate is (3.01152,0.02), coordinate thirdly is (3.01726,0.03) ... the coordinate of last point is (5.77350,10), in this example is the Y direction to be divided at 1000 come integration, according to the needs of actual accuracy, can corresponding expansion or dwindle point.In like manner, can design the free zone face of the wall of cup of luminous intensity distribution cup width.With the rising angle of main spot on luminous intensity distribution cup width is 62 °, the rising angle that shines the reflection ray of luminous intensity distribution cup rim of a cup inwall 13 fades to example with 62 °～30 ° geometric ratios successively by rim of a cup to the cup end, luminous intensity distribution cup 1 setting height(from bottom) that obtains at last when 12M, the rectangular light spots of the uniform 40MX13.8M that obtains throwing light on.More than get a calculating and can assist by computer software and finish, then each point is connected into smooth curve, by the computer drawing software generation model, can manufacture by Digit Control Machine Tool at last again.
With reference to Fig. 5, a kind of street lamp that adopts above-mentioned luminous intensity distribution cup 1, this street lamp have two kinds of embodiments, the one, install just like above-mentioned luminous intensity distribution cup 1 at lamp stand 2 tops, be provided with light source 14 in the luminous intensity distribution cup 1, this light source can high-pressure mercury lamp or great power LED, and the rectangle rim of a cup of described luminous intensity distribution cup 1 is along the road direction.The length direction of rectangular light spots extends along the road direction like this, compare with the hot spot of circle, overlapping and part hot spot projects outside the road in road central authorities to have avoided hot spot, under identical illumination intensity, distance between two lamp stands can be separated by farther, the quantity that street lamp is installed on the road of unit length like this can still less reach and save street lamp quantity and energy-conservation effect.In addition, can also add in the front of used reflecting type light distribution cup and can play anti-glare function like this by the luminous intensity distribution plate 15 with astigmatic structure.
With reference to figure 6,7 and 8, the another kind of embodiment of street lamp can also be provided with a lamp holder 3 at described lamp stand top, be provided with a plurality of aforesaid luminous intensity distribution cups 1 in the lamp holder 3, respectively be provided with a light source 14 in each luminous intensity distribution cup 1, the long limit of all rims of a cup is parallel with the road direction, the arrangement mode of described a plurality of luminous intensity distribution cups 1 can be being staggered of looking as Fig. 7, also can be the proper alignment of looking as Fig. 8.
The size of hot spot, brightness, relevant with the quantity of the height of street lamp and LED, once be the test data of the ground street lamp of various height of the present invention and LED quantity, the user can select in implementing design according to actual needs.
Illustrate: above light fixture luminous flux is the data that the light fixture test draws.The LED that selects for use is 1W LED.Luminous flux is 70～80LM/.
Claims (17)
1, a kind of luminous intensity distribution cup, at the bottom of comprising glass and wall of cup, the cup end and wall of cup inner surface are provided with reflector layer, cup end central authorities are used to install light source, it is characterized in that: the cup end is a rectangle, and described wall of cup inner surface is an inner concave arc surface, wall of cup encloses around the cup edge to be put, and constitutes rectangular rim of a cup.
2, a kind of luminous intensity distribution cup according to claim 1, it is characterized in that: its main rising angle is a predetermined value, the inner concave arc surface of described wall of cup is the free form surface that calculates with iterative Integral Method according to Snell's law, the rising angle of reflection ray that this free form surface has rim of a cup is identical with main rising angle, by the structure of rim of a cup to rising angle gradual change in predetermined angular range of the reflection ray at the cup end.
3, a kind of luminous intensity distribution cup according to claim 2 is characterized in that: described rim of a cup is to the rising angle even variation of the reflection ray of cup end inwall.
4, a kind of luminous intensity distribution cup according to claim 3 is characterized in that: on luminous intensity distribution cup length direction, its main rising angle is 30 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 30 °～0 ° gradual change.
5, a kind of luminous intensity distribution cup according to claim 3 is characterized in that: on luminous intensity distribution cup width, its main rising angle is 62 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 62 °～30 ° gradual changes.
6, a kind of luminous intensity distribution cup according to claim 1 is characterized in that: described glass of end central authorities are provided with a light source installing hole.
7, a kind of luminous intensity distribution cup according to claim 1, it is characterized in that: described reflector layer is deielectric-coating or metal film.
8, a kind of luminous intensity distribution cup according to claim 7, it is characterized in that: described reflector layer is the electroplated aluminum layer.
9, a kind of street lamp, comprise lamp stand, be installed in the luminous intensity distribution cup at lamp stand top, be provided with light source in the luminous intensity distribution cup, it is characterized in that: at the bottom of the described luminous intensity distribution cup cup is rectangle, and its wall of cup inner surface is an inner concave arc surface, and wall of cup encloses around the cup edge to be put, constitute rectangular rim of a cup, the long limit of rim of a cup and road direction are in the same way.
10, a kind of street lamp according to claim 9, it is characterized in that: its main rising angle is a predetermined value, the inner concave arc surface of described wall of cup is the free form surface that calculates with iterative Integral Method according to Snell's law, the rising angle of the reflection ray of rim of a cup is identical with main rising angle on this free form surface, by rising angle predetermined angular range in the gradual change of rim of a cup to the reflection ray at the cup end.
11, a kind of street lamp according to claim 10 is characterized in that: described rim of a cup is to the rising angle even variation of the reflection ray of cup end inwall.
12, a kind of street lamp according to claim 11 is characterized in that: on luminous intensity distribution cup length direction, its main rising angle is 30 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 30 °～0 ° gradual change.
13, a kind of street lamp according to claim 11 is characterized in that: on luminous intensity distribution cup width, its main rising angle is 62 °; Shine luminous intensity distribution cup rim of a cup inwall reflection ray rising angle by rim of a cup to the cup end successively with 62 °～30 ° gradual changes.
14, a kind of street lamp according to claim 9 is characterized in that: described lamp stand top is equipped with a plurality of luminous intensity distribution cups, respectively is provided with a light source in each luminous intensity distribution cup.
15, a kind of street lamp according to claim 14 is characterized in that: described a plurality of luminous intensity distribution cup proper alignment or be staggered.
16, a kind of street lamp according to claim 9 is characterized in that: described light source is a great power LED.
17, according to the described a kind of street lamp of claim 9, it is characterized in that: the front of described luminous intensity distribution cup also is provided with the luminous intensity distribution plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200597893U CN201137873Y (en) | 2007-11-20 | 2007-11-20 | Light distribution cup and road lamp adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200597893U CN201137873Y (en) | 2007-11-20 | 2007-11-20 | Light distribution cup and road lamp adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137873Y true CN201137873Y (en) | 2008-10-22 |
Family
ID=40038560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200597893U Expired - Fee Related CN201137873Y (en) | 2007-11-20 | 2007-11-20 | Light distribution cup and road lamp adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137873Y (en) |
-
2007
- 2007-11-20 CN CNU2007200597893U patent/CN201137873Y/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20141120 |
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| EXPY | Termination of patent right or utility model |