CN102510639B - LED lighting device - Google Patents
LED lighting device Download PDFInfo
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- CN102510639B CN102510639B CN201110417633.9A CN201110417633A CN102510639B CN 102510639 B CN102510639 B CN 102510639B CN 201110417633 A CN201110417633 A CN 201110417633A CN 102510639 B CN102510639 B CN 102510639B
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Planar Illumination Modules (AREA)
- Cultivation Of Plants (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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Abstract
The invention discloses an LED lighting device. The lighting device includes a transparent box, a PCB arranged in the transparent box, and a plurality of LEDs arranged on the PCB in a laying manner. The LEDs are connected through circuits. The driving current adopted by the LEDs is in a range of 55% to 85% of a rated current of the LEDs. The installation density of the LEDs on the PCB is 1.0 to 1.5 per cm2. In the invention, the driving current of the LEDs is reduced. By increasing the number of the LEDs assembled on the lighting device, the integral luminance of the lighting device is kept. The heating volume generated on the lighting device is reduced. And the service lifetime of the LEDs used on the lighting device is prolonged. Besides, the economical efficiency of the LED lighting device used in indoor cultivation facility is also improved.
Description
Technical field
The present invention relates to the lighting device that a kind of light-emitting diode is laid on printed circuit board (PCB), be specifically related to a kind of light emitting diode illuminating apparatus in the indoor cultivation for plant etc.
Background technology
At present, the development rapidly along with semiconductor technology in several years, the characteristic of light-emitting diode and its efficiency are especially progressive, be accompanied by the significant progressive and production-scale increase of manufacturing technology, the low price of light-emitting diode is development hastily also, makes the lighting device of light-emitting diode incandescent lamp and the fluorescent lamp before having substituted little by little universal widely socially.
Further, use the lighting device of light-emitting diode, except the illumination in common family and office etc., also in various fields, obtained application widely.Particularly light-emitting diode is called as to the artificial light of " plant factor " for what is called, causes extensively and watch attentively in the utilization of the cultivating facilities of indoor planting plants in great and vegetables.This is, the distinctive emission wavelength characteristic of light-emitting diode, and low consumption electric power, and it is also optimal can be described as most suitable with regard to the utilization of the cultivating facilities such as houseplant.
In general, the light emitting diode illuminating apparatus room using in indoor cultivating facility, in the inner shape that has displaying of Japanese documentation 1 (JP 2002-141555 communique).In other words, light-emitting diode is made most light-emitting diodes of laying, this substrate is packed in the cylinder flask of well-illuminated resin and glass system, is formed product of the present invention by light emitting diode illuminating apparatus on vertical printed circuit board (PCB).
, in light-emitting diode, from electric power to bright energy transformation efficiency, about 4～10% degree have also only been improved than incandescent lamp in the past.Therefore, using on light emitting diode illuminating apparatus, if increase its illuminance, bring thus the caloric value of lighting device self also can increase.But, the semi-conducting material of effective GaAs and the gallium nitride etc. of general light-emitting diodes runs into heat energy and can become fragile, 80 degree Celsius when above electric elements can start agingly, on element, continue to increase heat of high temperature burden, can shorten terrifically as the life-span of light-emitting diode.
So, should effectively solve the relevant problem of light emitting diode illuminating apparatus that uses, such as, on lighting device, designing metal radiator promotes by radiating effect on device, or, on the current driving circuit of light-emitting diode, by patent documentation 2 (JP 2004-214519 communique) and the same design current limiting circuit of the upper demonstration of patent documentation 3 (JP 2010-103217 communique), explain according to controlling the mobile electric current of light-emitting diode the measure that caloric value lowers of planning.
But the method for adding radiator on lighting device, can cause increasing considerably and the rising of installation cost of installation weight.Also have appending as current limit circuit shown on above-mentioned existing patent documentation, it is complicated that the control circuit of lighting device becomes, follow the rising of its installation cost, and the defect causing according to the increase that uses the increase of electronic unit can cause failure factor.Particularly, in the above-mentioned lighting device for indoor growing facility, about the lighting device of 1 owing to using extremely most light-emitting diodes, being counted as fatal defect as similar defect on lighting device universal.
Summary of the invention
The invention provides a kind of light emitting diode illuminating apparatus, solve problem that above-mentioned prior art exists and defect as object, more specifically, provide a kind of use on the indoor growing facility of vegetables and plant etc., caloric value few and device lifetime of long light emitting diode illuminating apparatus is provided.
For achieving the above object, the invention provides a kind of light emitting diode illuminating apparatus, be characterized in, this lighting device comprises transparent boxes, is arranged on the printed circuit board (PCB) in transparent boxes, and being laid on the some light-emitting diodes on printed circuit board (PCB), each light-emitting diode each other circuit connects;
The drive current that above-mentioned light-emitting diode adopts be set in this light-emitting diode rated current 55% to 85% between;
Above-mentioned light-emitting diode is laid on packing density on printed circuit board (PCB) and is set in 1 square centimeter 1.0 to 1.5.
In this lighting device, between the packing density increment rate β of light-emitting diode drive current reduced rate α and light-emitting diode, close and be:
β＝(1/α)×k
Wherein, k is coefficient of luminous intensity, and its span is between 0.8 to 1.0;
The numerical value that the numerical value of 1/ α is multiplied by 0.8 to 1.0 coefficient of luminous intensity k gained can be determined the packing density increment rate β that lays light-emitting diode on described printed circuit board (PCB);
Be increased in the laying quantity of the light-emitting diode on printed circuit board (PCB) according to this packing density increment rate β, can keep on the whole the illuminance of light-emitting diode drive current reduction front and back light-emitting diode in this lighting device consistent.
This lighting device, for indoor growing, is provided with the distance of 10 centimetres between this lighting device and cultivated plant.
Above-mentioned transparent boxes adopt transparent resin to make, and its surface is made as the structure that can make radiating light scattering.
Above-mentioned printed circuit board (PCB) adopts printing board PCB, and its surface or the inside are provided with copper foil circuit.
Above-mentioned light-emitting diode adopts the light-emitting diode of the plastic molded type of bullet type.
Light emitting diode illuminating apparatus of the present invention compared to the prior art, its advantage is, the present invention can be lowered the drive current of light-emitting diode gradually, and according to being related to that increase is assembled in the quantity of the light-emitting diode on lighting device between the packing density increment rate β of light-emitting diode drive current reduced rate α and light-emitting diode, can keep the illuminance of lighting device entirety, realize and reducing by the caloric value producing on lighting device, can extend the life-span of the light-emitting diode using on lighting device, also can improve the economy of the light emitting diode illuminating apparatus using in indoor growing facility.
Brief description of the drawings
Fig. 1 a is the structural plan figure of light emitting diode illuminating apparatus of the present invention;
Fig. 1 b is the structure front elevation of light emitting diode illuminating apparatus of the present invention;
Fig. 1 c is the sectional view of A-A ' line in Fig. 1 a and Fig. 1 b;
Fig. 2 is the circuit connection diagram of light emitting diode illuminating apparatus of the present invention;
Fig. 3 is the graph of a relation of light-emitting diode drive current and caloric value.
Embodiment
Below in conjunction with the best embodiment of brief description of the drawings the present invention.
As Fig. 1 a and in conjunction with as shown in Fig. 1 b and Fig. 1 c, Fig. 1 a is the structural plan figure of light emitting diode illuminating apparatus 10 of the present invention.Fig. 1 b is the structure front elevation of light emitting diode illuminating apparatus 10 of the present invention.Fig. 1 c is the simple formula section figure line (sectional view) of A-A ' line in Fig. 1 a and Fig. 1 b.
Moreover, various wiring materials and electronic unit on light emitting diode illuminating apparatus 10, or various circuit etc., direct relation be there is no with main contents of the present invention, indicate so omitted it in figure in 1a, Fig. 1 b and Fig. 1 c, in specification, also omitted equally its relevant record.
Light emitting diode illuminating apparatus 10 of the present invention is mainly made up of printed circuit board (PCB) 11, light-emitting diode 12 and transparent boxes 13.Printed circuit board (PCB) 11 is widely used printing board PCBs on general circuit, and the material of this printed circuit board (PCB) 11 can adopt the such as conventional material of printed circuit board (PCB) of paper epoxy resin, glass epoxy resin or Berlet phenolic resins etc.
In order to install and to be connected more light-emitting diode 12 with circuit on same printed circuit board (PCB) 11, the technology of utilizing photoetch etc. in the present invention is on the surface of printed circuit board (PCB) 11 or the inside (not demonstration on figure) is provided with the printed pattern (copper foil circuit) of Copper Foil.The connection being arranged between the each light-emitting diode 12 on printed circuit board (PCB) 11 can form various connecting circuits, here for example, for one of them example: in prior art, connecting circuit is as shown in Figure 2 widely used.
As shown in Figure 2, in the connecting circuit of formation one printed circuit board 11, include 30～40 series arms that are connected in parallel.In each series arm, include the light-emitting diode 12 of approximately 12～15 of quantity, these several light-emitting diodes 12 are connected in series, and are also connected in series with a current limit resistance 14 in each series arm simultaneously.According to characteristic and the circuit mode etc. of selecting suitable power circuit 15, in circuit, can omit current limit impedance 14.
As shown in Figure 2, in a series arm in connecting circuit, light-emitting diode 12 is owing to being all connected in series, and in each light-emitting diode 12, mobile current value must be all same current value.Further, the each series arm in connecting circuit is in order all to realize and to be connected in parallel, and the magnitude of voltage of applying in each series arm must be all same magnitude of voltage.Moreover, connecting circuit as shown in Figure 2, just one embodiment of the present of invention, connecting circuit of the present invention is not only limited to connected mode involved in this embodiment.
The light-emitting diode of the plastic molded type that what in the present embodiment, the form of light-emitting diode 12 and kind adopted is is shaped by bullet type.Meanwhile, about the illuminant colour of light-emitting diode 12, according to being placed on cultivation object plant in indoor growing facility and the attribute of vegetables, or the condition such as corresponding cultural method, can from various semi-conducting materials, select corresponding illuminant colour.
For example, if emphasize the illuminant colour of red colour system, use the light-emitting diode 12 forming in the semi-conducting material of aluminum gallium arsenide and gallium phosphide arsenide system better.If emphasize the illuminant colour of green grass or young crops, green system, it is optimal using the light-emitting diode 12 forming in the semi-conducting material of zinc selenide and silicon carbide system.Further, in conjunction with respective leds 12 purposes and object etc., Combined Mining is best with the light-emitting diode 12 of multiple different illuminant colour.
Moreover, the present invention is in order to alleviate the hot burden of light-emitting diode 12 and to extend its useful life, than adopting the high brightness type that thermal capacity is little, the light-emitting diode of patch-type, it is optimal adopting the light-emitting diode of the plastic molded type of the bullet type that thermal capacity is large.
With regard to current market, because the developing direction that the development of light-emitting diode 12 is tendencies taking the light-emitting diode of the patch-type of high brightness type as main flow, the plastic molded type of bullet type has become old-fashioned with regard to market, and its price is also progressively reducing.Therefore, use the light-emitting diode of the plastic molded type of bullet type, also can expect the optimum efficiency of controlled reduction lighting device integral product cost.
Transparent boxes 13 are housing parts of light emitting diode illuminating apparatus 10, and it is for placing the printed circuit board (PCB) 11 that a large amount of light-emitting diode 12 is installed.The material of transparent boxes 13, such as, the various transparent resin materials such as macromolecule resin and glass such as propylene, Merlon or plastics can be adopted.Further, also, with regard to its shape, be not limited to the cylinder type example shown in Fig. 1, corresponding different actual service conditions, transparent boxes 13 can be made various shapes.
The principle condition of transparent boxes 13 is outsides that the light of the light-emitting diode 12 placed in its inside must emit to box, so that transparent boxes 13 are made as is transparent.But in order to allow the radiating light scattering of light-emitting diode 12, the preferred plan of transparent boxes 13 can be: the surface of transparent boxes 13 can be made translucent, or also can be provided with in its surface the face of being uneven and the not structure of joint face such as concavo-convex.
As shown in Figure 2, the inside that power circuit 15 is arranged on transparent boxes 13 is also preferred plan, or power circuit 15 also can be arranged on the outside of transparent boxes 13.In addition, alleviate the hot burden of the light-emitting diode 12 being arranged on printed circuit board (PCB) 11 if want in technical scheme, its preferred plan can be the outside that the power circuit of heating 15 and various electronic control circuit is arranged on to transparent boxes 13.
According to the function of light emitting diode illuminating apparatus 10 of the present invention, illustrate about its dynamic situation below.As shown in table 1, show that light emitting diode illuminating apparatus 10 obtains various test datas in three experiment examples (example 1, example 2 and example 3).
In this example 1, example 2 and example 3, the installation form of light-emitting diode 12 is: the light-emitting diode 12 of 12 is connected in series and forms a series arm.The in the situation that of example 1, be to compose in parallel connecting circuit by 30 row series arms, and be arranged on printed circuit board (PCB) 11.In the situation of example 2, be that 36 row series arms compose in parallel connecting circuit, and be arranged on printed circuit board (PCB) 11.In the situation of example 3, be that 43 row series arms compose in parallel connecting circuit, and be arranged on printed circuit board (PCB) 11.Therefore,, with regard to each example, in example 1, example 1 and example 3,360,432 and 516 s' light-emitting diode 12 has been installed respectively on printed circuit board (PCB) 11 separately.
For the printed circuit board (PCB) 11 in these three example tests, adopt the long chi rectangle of making length 102.6cm, width 4.4cm, the part of its diode installed 12 is made the size of 99.1cm × 3.6cm.So the real area of the mounting portion of this light-emitting diode 12 is 357.6cm
2.Packing density about light-emitting diode 12 in each example is as follows:
1 1.007/cm of example
2
2 1.208/cm of example
2
3 1.443/cm of example
2
In the present invention, the packing density of light-emitting diode 12 of laying on printed circuit board (PCB) 11 is set in 1 square centimeter 1.0 to 1.5, wherein more preferably sets 1.2 left and right in 1 square centimeter.
In these three example tests, the constant-current supply of direct current for the power acquisition of light emitting diode illuminating apparatus 10.The power supply of supplying with printed circuit board (PCB) 11 is all set as same 500mA.So in should three examples, mobile average current in each row series arm, i.e. an average current that light-emitting diode is mobile, clearly record value is as follows for it:
Example 1 500mA ÷ 30 is listed as ≈ 16.7mA
Example 2 500mA ÷ 36 are listed as ≈ 13.9mA
Example 3 500mA ÷ 43 are listed as ≈ 11.6mA
The rated current of the light-emitting diode 12 using in the test of these three examples is greatly about 20mA.So in above-mentioned each example, the relation of the rated current of light-emitting diode 12 is as follows separately for it for the interior mobile average current of light-emitting diode 12: the drive current that flows to its each light-emitting diode 12 in example 1 is about 84% of its rated current; The drive current that flows to its each light-emitting diode 12 in example 2 is about 70% of its rated current; The drive current that flows to its light-emitting diode 12 in example 3 is about its rated current 58%.
In the present invention, the drive current of each light-emitting diode 12 can be set as its rated current 55% to 85% between.Wherein more preferably the drive current of light-emitting diode 12 is set as 70% left and right of its rated current.
Table 1: the test data of three kinds of test examples of light emitting diode illuminating apparatus
Current control method is prior art, for example can adopt the resistance being connected in series is changed into and being connected in parallel, adjust the drive current of the light-emitting diode 12 of flowing through, or adopt the method for the adjustment of drive current and duty ratio, control the drive current of the light-emitting diode 12 of flowing through.
Because the caloric value of light-emitting diode 12 and the electric power of its consumption are directly proportional, be specially square being directly proportional of 12 li of mobile electric currents of the power that light-emitting diode 12 consumes and light-emitting diode.Therefore, the relation of 12 li of mobile drive currents of the caloric value of light-emitting diode 12 and light-emitting diode, in general as shown in Figure 3, for the increase along with electric current can form the situation that caloric value sharply increases.
For example, be that in the reduction situation of 60～70% degree of its rated current Is, the caloric value Qo of this light-emitting diode can be reduced to it below the half of the caloric value Qs of the mobile situation of rated current Is at the interior mobile electric current I o of light-emitting diode 12.In other words,, owing to reducing the interior mobile electric current of light-emitting diode 12, the heat burden in light-emitting diode 12 can diminish, and namely can extend in other words its useful life.
The relation of the interior mobile electric current of light-emitting diode 12 and its illuminance (brightness), if in the scope of rated current, almost can be confirmed to be the variation relation of straight linear.Therefore reduce in the situation of electric current mobile in light-emitting diode, corollary is that its brightness when luminous also can reduce.
In the present invention, the problem reducing for brightness, adopt the quantity that increases light-emitting diode to make up, doing one here simply illustrates: be about to a light-emitting diode 12 and adopt two light-emitting diodes 12 of adjacency to replace, flow to respectively in two light-emitting diodes 12 and originally flow to an electric current in light-emitting diode, electric current in these two Light-Emitting Diodes 12 in each Light-Emitting Diode 12 is reduced to original half, the half of a Light-Emitting Diode 12 originally is also reduced in the brightness of same its each Light-Emitting Diode 1, but these two Light-Emitting Diodes 12 can obtain and the brightness of light-emitting diode 12 of script with degree as a whole, simultaneously, it has been realized the caloric value of each light-emitting diode 12 has been controlled at below 1/4, increased the useful life of Light-Emitting Diode 12.
And main points of the present invention are, even reduce in the situation of electric current mobile in light-emitting diode, almost should maintain same illuminance.But adopt increase light-emitting diode quantity to reduce the electric current in each light-emitting diode, and the relation between the reduced rate of the electric current just relating to and the increment rate of light-emitting diode 12, its correlation is confirmed through overtesting.
The test that main contents are set out is thus as follows: the packing density increment rate β that tries to achieve current reduction rate α, light-emitting diode in this test using above-mentioned example 1 as benchmark in other example 2 and example 3.In the present invention, as relating to the parameter that connects between the reduced rate α of electric current and the increment rate β of packing density, having defined illuminance k below:
k＝α×β……(1)
Be out of shape the equation of above-mentioned (1):
β＝(1/α)×k……(2)
Apply the equation of above-mentioned (2), according to utilize in test or the coefficient of luminous intensity k that obtains in experience, as target from the reduced rate α of electric current, can dope the increment rate β of the packing density of light-emitting diode.
In current test each numerical value of α, β, k, in the chart of table 1, have representedly, again with reference to this chart, wherein clearly write counter value.
In the situation of example 2: α=0.832; β=1.200; K=0.998.
In the situation of example 3: α=0.695; β=1.433; K=0.996.
In this test, in the scope of rated current, the brightness of light-emitting diode 12 and electric current are almost reached direct ratio, utilize this variation, the slip α of electric current and the increment rate β of packing density form the relation that is inversely proportional to each other, that is to say the in the situation that of k ≈ 1 and calculate β in advance, and β based in example 2 and example 3 decides the installation quantity of light-emitting diode.
Next, the illuminance measurement result of each example in current test is described.The assay method of illuminance carries out according to the prescriptive procedure of Japanese lighting device illuminance measurement standard " JIS C7612 ", and we use the illuminance analyzer of introducing in " JIS C1609 " the mensuration machine of corresponding relevant illuminance.The result that illuminance is measured in each example is shown in the chart of table 1.In example 2 and example 3, (except example 1), although reduced electric current mobile in light-emitting diode, all determines and approximately increased by 1 one-tenth than example 1, and other example determines the illuminance of 2 one-tenth of about increases.
In view of such test data, under existing conditions, even by the setting value of coefficient of luminous intensity k be also will be low than above-mentioned numerical value (k ≈ 1) numerical value, with regard to result, its result substantially determine can obtain equal illuminance.I.e. explanation, even than the reduced rate α of electric current, the growth rate β of the packaging density of light-emitting diode is controlled in lower situation, in fact, also can prove to obtain same illuminance substantially.
According to above-mentioned result of the test, estimate, under the prerequisite of the luminous intensity substantially being equated in each example, can calculate the correction value k ' of coefficient of luminous intensity in hypothesis.And correction value k ' based on this coefficient of luminous intensity, adopt above-mentioned (2) equation, can calculate the correction value β ' of the increment rate of packing density.The k ' obtaining like this and the value of β ' are as shown in table 1, same, and according to this correction value β ', it is also as shown in table 1 that quantity is installed in the setting of the light-emitting diode 12 drawing in example 2 and example 3.
As shown in table 1, set in the situation in order to obtain almost the illuminance equal with the situation of box 1, coefficient of luminous intensity k '=0.919 of example 2, coefficient of luminous intensity k '=0.874 of example 3, in conjunction with above-mentioned calculating gained coefficient of luminous intensity k, the scope of known coefficient of luminous intensity k is between 0.8 to 1.0.
In each example of current test, the electric power of its input, the input power of the primary side of supply unit 15 is all 21.7W.And the value of the luminous efficiency of each example (lux/W) is also as shown in the chart of table 1.In general, the luminous efficiency of the fluorescent lamp of original " 32W+30W " type is in 23 (lux/W) left and right, by the luminous efficiency of the fluorescent lamp of existing Data Comparison in the chart of table 1 " 32W+30W " type, what in this test, the test data of three kinds of examples even can be said has obtained very good result.
Moreover for the present invention, according to the Current Control means (not shown) of defined in light emitting diode illuminating apparatus 10, the electric current that not only offers light-emitting diode can freely be adjusted.Also by and by the temperature inductor of design code and brightness impression device (not shown) and by carrying out Current Feedback Control, can maintain offering the suitable current value of light-emitting diode 12.
Plant, by its nutrient of synthetic generation of light, with regard to the indoor growing of plant, should be placed on the place nearest from plant light source as far as possible, and the blade face and the sufficient light of rhizome that give plant are selections best in cultural method.In general, the light going out from light source radiation is decayed apart from 2 times of inverse proportions of one-tenth from light source to plant.But, the caloric value of the lighting device of prior art is too large, according to placing lighting device and from installing the heating situation of coming, the lighting device of prior art can cause damaging blade face and the rhizome of plant around cultivated plant.
If adopt lighting device of the present invention, in adopting than the few electric current of the common rated current of prior art, drive light-emitting diode, the caloric value that lighting device can be sent controls to very low.With regard to the indoor growing facility of plant etc., if adopt lighting device of the present invention, for example, even if lighting device is arranged on to surrounding's (: the distance of 10cm degree) of blade face and the rhizome etc. of plant, the situation of lighting device heating according to the present invention, can reduce cultivated plant is caused damage, and plant light fully also can be provided.
Also have in the present invention, because drive current mobile in light-emitting diode is less, the electronic jamming of the electric current that can reduce is directly proportional to drive current increases.Furthermore, the increase of drive current, reduces the forward voltage of light-emitting diode, can reduce the risk of thermal runaway fault.Thermal runaway fault refers to the increase along with electric current, and the heating forward voltage on the PN composition surface of diode can reduce, and situation, according to the raising of electric current, can be disliked circulation the destroyed situation of electronic component further occurs thus.
According to above explanation, if according to the present invention, can ensure and prior art lighting device almost same illuminance, its caloric value is especially little, and the life-span of light-emitting diode significantly extend, also can realize the target of the light emitting diode illuminating apparatus low price that indoor growing facility uses.
Light emitting diode illuminating apparatus of the present invention described above can use at the indoor growing facility of plant and vegetables etc., can also be used for the light-emitting diode of field of illuminating device.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (5)
1. a light emitting diode illuminating apparatus, it is characterized in that, this lighting device comprises transparent boxes (13), is arranged on the printed circuit board (PCB) (11) in described transparent boxes (13), and being laid on the some light-emitting diodes (12) on described printed circuit board (PCB) (11), each light-emitting diode (12) each other circuit connects;
The drive current that described light-emitting diode (12) adopts be set in this light-emitting diode (12) rated current 55% to 85% between;
Described light-emitting diode (12) is laid on packing density on printed circuit board (PCB) (11) and is set in 1 square centimeter 1.0 to 1.5;
In this lighting device, between the packing density increment rate β of light-emitting diode drive current reduced rate α and light-emitting diode, close and be:
β＝(1/α)×k
Wherein, k is coefficient of luminous intensity, and its span is between 0.8 to 1.0;
The numerical value that the numerical value of 1/ α is multiplied by 0.8 to 1.0 coefficient of luminous intensity k gained can be determined the upper packing density increment rate β that lays light-emitting diode (12) of described printed circuit board (PCB) (11);
Be increased in the laying quantity of the light-emitting diode (12) on printed circuit board (PCB) (11) according to this packing density increment rate β, can keep on the whole the illuminance of light-emitting diode drive current reduction front and back light-emitting diode in this lighting device consistent.
2. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that, this lighting device, for indoor growing, is provided with the distance of 10 centimetres between this lighting device and cultivated plant.
3. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that, described transparent boxes (13) adopt transparent resin to make, and its surface is made as the structure that can make radiating light scattering.
4. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that, described printed circuit board (PCB) (11) adopts printing board PCB, and its surface or the inside are provided with copper foil circuit.
5. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that, described light-emitting diode (12) adopts the light-emitting diode of the plastic molded type of bullet type.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-158469 | 2011-07-19 | ||
| JP2011158469A JP2013025966A (en) | 2011-07-19 | 2011-07-19 | Light-emitting diode lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102510639A CN102510639A (en) | 2012-06-20 |
| CN102510639B true CN102510639B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120560891 Expired - Fee Related CN202652597U (en) | 2011-07-19 | 2011-12-02 | Light emitting diode lighting device |
| CN201110417633.9A Expired - Fee Related CN102510639B (en) | 2011-07-19 | 2011-12-02 | LED lighting device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120560891 Expired - Fee Related CN202652597U (en) | 2011-07-19 | 2011-12-02 | Light emitting diode lighting device |
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| CN (2) | CN202652597U (en) |
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| US10264648B2 (en) * | 2017-06-07 | 2019-04-16 | Fluence Bioengineering, Inc. | Systems and methods for a paralleled hybrid horticulture system |
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| CN101666482A (en) * | 2008-09-04 | 2010-03-10 | 光茵生物科技股份有限公司 | Light emitting diode (LED) plant tissue cultivation lamp and cultivation bracket thereof |
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2011
- 2011-07-19 JP JP2011158469A patent/JP2013025966A/en not_active Withdrawn
- 2011-12-02 CN CN 201120560891 patent/CN202652597U/en not_active Expired - Fee Related
- 2011-12-02 CN CN201110417633.9A patent/CN102510639B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| JP2002141555A (en) * | 2000-10-31 | 2002-05-17 | Hitachi Building Systems Co Ltd | Led illumination lamp and method for manufacturing led illumination lamp |
| CN101382274A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院半导体研究所 | LED flat light source structure for illuminating |
| JP2009171904A (en) * | 2008-01-25 | 2009-08-06 | Panasonic Corp | Light emitting diode illuminator |
| CN101666482A (en) * | 2008-09-04 | 2010-03-10 | 光茵生物科技股份有限公司 | Light emitting diode (LED) plant tissue cultivation lamp and cultivation bracket thereof |
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| CN102510639A (en) | 2012-06-20 |
| JP2013025966A (en) | 2013-02-04 |
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