CN204853037U - Novel structure LED omnirange ball bubble lamp - Google Patents

Abstract

The utility model discloses a novel structure LED omnirange ball bubble lamp, including the shell, the lamp holder is connected to the shell bottom, and the radiating piece is provided with the PCB board in imbedding the shell in the radiating piece, and the LED base plate contains the LED chip, the positive negative pole of LED base plate through the tin cream on the reflow soldering is connected to PCB, a plurality of LED lamp pearls of circumference subsection on the LED base plate, the outside cell -shell that is of LED base plate, the cell -shell material is PC, and the cell -shell is inside is evenly filling the dispersing agent, and the dispersing agent is a scattering particles, and the about 2um -10um isotropic of its diameter spares the matter bobble. The utility model has the characteristics of simple structure, cost are cheap, production efficiency is high, low in labor strength, luminousness are high, energy saving and satisfy american energy star standard etc.

Description

A kind of new structure LED omnirange bulb lamp

Technical field

The utility model relates to LED technology, specifically a kind of new structure LED omnirange bulb lamp.

Background technology

Along with the development of society, the current light source applications of LED energy-conserving and environment-protective that uses is more and more wider, and the various light fixture producer in market also develops more and more faster, and light fixture profile is different.

Traditional incandescent lamp is progressively replaced by LED omnirange bulb lamp, profile and traditional incandescent lamp of LED omnirange bulb lamp are similar, comprise the LED light source of the multiple light emitting diode composition of driving power box, driving power drives lumination of light emitting diode to throw light on.

But in prior art can there is following technical problem in LED omnirange bulb lamp:

(1), complex structure, not easily assemble, production efficiency is low, cost is high;

(2), whole lamp whole lamp light transmittance is on the low side, generally at 75%-86%, causes the waste of LED light source significant cost;

(3), whole lamp optical performance can not meet the asterisk standard of american energy.

Utility model content

The purpose of this utility model is to overcome the deficiency that above prior art exists, and provides that a kind of structure is simple, low cost, production efficiency are high, labour intensity is low, light transmittance is high, economize energy and meet the new structure LED omnirange bulb lamp of asterisk standard of american energy.

In order to achieve the above object, the utility model is by the following technical solutions: a kind of implementation method of new structure LED omnirange bulb lamp, comprises the following steps:

(1), Mie scattering: when the natural daylight incided on scattering object particle and scattering object particle dimension close to time, the spherical scatterer particle of isotropic, to the scattering process of light wave, draws by Mie scattering theory;

(2), ball bubble target light distribution establish: 0 ° to 135 ° time light intensity more than 90% point can not deviation average 25%, all the other can not lower than 50%, 135 ° of-180 ° of luminous fluxes can not < 5%, in this, as the target of bulb lamp Light distribation design;

(3), light source is arranged: between LED light source distance cell-shell 2mm-10mm, annular arrangement is in LED-baseplate;

(4), 3D model is set up: utilize equation F (X, Y)=0 sets up free curve, cell-shell model is converted to by entity, cell-shell material is PC, and cell-shell inner homogeneous is filled with diffusant, and diffusant is a kind of scattering particles, its diameter is about the isotropic homogeneous bead of 2um-10um, diameter and LED emission wavelength are in same dimension, and describe with Mie scattering equation, particle to the total scattered light intensity after the incident light scattering of unit light intensity is:

$I=\underset{0}{\overset{2\mathrm{\&pi;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;};$

So the density fonction obtaining the probability of scattering on θ direction is:

$I=\frac{\underset{0}{\overset{\mathrm{\&theta;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;}}{\underset{0}{\overset{2\mathrm{\&pi;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;}};$

By producing random number random, under obtaining corresponding random number, the scattering deflection of photon:

θ＝F ^-1(random)；

The free path of photon is an important parameter in Monte Carlo simulation process, and the volume fraction of it and volume scattering type light-scattering material scattering particles is closely related; In scattering system, the probability density of the random free path value of photon should meet the free path sampling formula of photon:

$L=\frac{-ln\left(random\right)}{\mathrm{\&sigma;}},\mathrm{\&sigma;}={\mathrm{\&pi;\&pi;}}^{2}Cs;$

Wherein, r is the radius 1um-5um of scattering particles, σ is mean free path, and C is that the volume fraction value of diffusant is generally at 5*10 ⁵individual/more than, s is scattering coefficient;

(5), according to step (4) calculate, adjust cell-shell free form surface curvature, change light transmition direction, make Light distribation meet the standard of step (2).

Mie scattering in described step (1), α=π d/ λ; Wherein, d is light diffusing agent diameter, λ lambda1-wavelength, when d and the λ order of magnitude is suitable, produces Mie scattering phenomenon.

Above-mentioned new structure LED omnirange bulb lamp, comprises shell, and outer casing bottom connects lamp holder, and radiating piece is imbedded in shell, is provided with pcb board in radiating piece, and LED-baseplate comprises LED chip, and LED-baseplate both positive and negative polarity is connected on PCB by tin cream through Reflow Soldering; The some LED lamp bead of circumference branch in LED-baseplate, LED-baseplate outside is cell-shell, and cell-shell material is PC, and cell-shell inner homogeneous is filled with diffusant, and diffusant is a kind of scattering particles, and its diameter is about the isotropic homogeneous bead of 2um-10um.

Described shell is bonded together by glue and cell-shell.

Described cell-shell is in " U " shape structure.

Between described LED lamp bead distance cell-shell 2mm-10mm.

Described LED lamp bead arranges a circle, and the distance between adjacent LED lamp pearl is 10 ~ 20mm.

In order to significantly improving optical light transmittance, reduce a LED light source number to reduce costs, have employed and use Mie scattering technology and refractive technique to combine, creationary use, make assembling procedure simple, and optics light transmittance is up to 96%, light source cost savings 30%-50%, production cost saves 10%-30%; The utility model reality is for prior art:

1, PCB is through LED-baseplate stopper slot, is connected to both positive and negative polarity, eliminates wire or terminal through Reflow Soldering.

2, the LED chip in LED-baseplate is distributed in periphery, increases heat radiation to greatest extent.

3, radiating piece is plastics or metal, is directly embedded in plastic casing; Make the structure of original two pieces become 1, reduce costs.

4, use Mie scattering technology and refractive technique to combine, directly realized the Omni-directionalBulb Light distribation requirement in Energy Star standard by cell-shell, and optics light transmittance > 96%, LED chip cost reduces 30%-50%.

5, operating procedure is simple, eliminates the assembling of traditional reflector, lens, and production cost reduces 10%-30%.

Accompanying drawing explanation

Fig. 1 is a kind of detonation configuration schematic diagram of new structure LED omnirange bulb lamp;

Fig. 2 is the structural representation of cell-shell in the utility model;

Fig. 3 is the structural representation at LED-baseplate place in the utility model.

Number in the figure and title as follows:

1	Shell	2	Lamp holder
				3	Radiating piece	4	Pcb board
5	LED-baseplate	6	LED lamp bead
				7	Cell-shell	8	Scattering particles

Detailed description of the invention

For ease of it will be appreciated by those skilled in the art that the utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment 1:

As shown in Figures 1 to 3, a kind of implementation method of new structure LED omnirange bulb lamp, comprises the following steps:

(1), Mie scattering: when the natural daylight incided on scattering object particle and scattering object particle dimension close to time, the spherical scatterer particle of isotropic, to the scattering process of light wave, draws by Mie scattering theory;

(2), ball bubble target light distribution establish: 0 ° to 135 ° time light intensity more than 90% point can not deviation average 25%, all the other can not lower than 50%, 135 ° of-180 ° of luminous fluxes can not < 5%, in this, as the target of bulb lamp Light distribation design;

(3), light source is arranged: LED light source is apart from cell-shell 2mm, and annular arrangement is in LED-baseplate;

(4), 3D model is set up: utilize equation F (X, Y)=0 sets up free curve, cell-shell model is converted to by entity, cell-shell material is PC, and cell-shell inner homogeneous is filled with diffusant, and diffusant is a kind of scattering particles, its diameter is about the isotropic homogeneous bead of 2um-10um, diameter and LED emission wavelength are in same dimension, and describe with Mie scattering equation, particle to the total scattered light intensity after the incident light scattering of unit light intensity is:

$I=\underset{0}{\overset{2\mathrm{\&pi;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;};$

So the density fonction obtaining the probability of scattering on θ direction is:

$I=\frac{\underset{0}{\overset{\mathrm{\&theta;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;}}{\underset{0}{\overset{2\mathrm{\&pi;}}{\&Integral;}}2\mathrm{\&pi;}I\left(\mathrm{\&theta;}\right)Ssin\mathrm{\&theta;}d\mathrm{\&theta;}};$

By producing random number random, under obtaining corresponding random number, the scattering deflection of photon:

θ＝F ^-1(random)；

The free path of photon is an important parameter in Monte Carlo simulation process, and the volume fraction of it and volume scattering type light-scattering material scattering particles is closely related; In scattering system, the probability density of the random free path value of photon should meet the free path sampling formula of photon:

$L=\frac{-ln\left(random\right)}{\mathrm{\&sigma;}},\mathrm{\&sigma;}={\mathrm{\&pi;\&pi;}}^{2}Cs;$

Wherein, r is the radius 1um of scattering particles, σ is mean free path, and C is that the volume fraction value of diffusant is generally at 5*10 ⁵individual/more than, s is scattering coefficient;

(5), according to step (4) calculate, adjust cell-shell free form surface curvature, change light transmition direction, make Light distribation meet the standard of step (2).

Mie scattering in described step (1), α=π d/ λ; Wherein, d is light diffusing agent diameter, λ lambda1-wavelength, when d and the λ order of magnitude is suitable, produces Mie scattering phenomenon.

Above-mentioned new structure LED omnirange bulb lamp, comprises shell, and outer casing bottom connects lamp holder, and radiating piece is imbedded in shell, is provided with pcb board in radiating piece, and LED-baseplate comprises LED chip, and LED-baseplate both positive and negative polarity is connected on PCB by tin cream through Reflow Soldering; The some LED lamp bead of circumference branch in LED-baseplate, LED-baseplate outside is cell-shell, and cell-shell material is PC, and cell-shell inner homogeneous is filled with diffusant, and diffusant is a kind of scattering particles, and its diameter is about the isotropic homogeneous bead of 2um-10um.Light diffusing agent in the present embodiment is DOW CORNING 30-424, white organosilicon powder, and as shown in Figure 2, light changes direction after diffusant, calculates, adjust cell-shell free form surface curvature, satisfy the demands through said method.

Shell in the present embodiment is bonded together by glue and cell-shell; Cell-shell is in " U " shape structure; LED lamp bead distance cell-shell 2mm; LED lamp bead arranges a circle, and the distance between adjacent LED lamp pearl is 10mm.

Adopt said structure and method, significantly improving optical light transmittance, reduce a LED light source number to reduce costs, have employed and use Mie scattering technology and refractive technique to combine, creationary use, make assembling procedure simple, and optics light transmittance is up to 96%, light source cost savings 30%-50%, production cost saves 10%-30%.

Embodiment 2:

The present embodiment difference from Example 1 is: the LED lamp bead distance cell-shell 10mm in the present embodiment; LED lamp bead arranges a circle, and the distance between adjacent LED lamp pearl is 20mm; The radius 5um of scattering particles in step (4).

Comparative example 1

The present embodiment adopts 4 kinds of Structure Comparisons, and 1 ~ 3 kind of structure is structure of the prior art, and general configuration is as follows:

(1), LED-baseplate+reflector+diffusion cell-shell; Optics light transmittance 83%, optical efficiency is on the low side;

(2), LED-baseplate+boss+diffusion cell-shell; Optics light transmittance 86%, optical efficiency is on the low side, and LED-baseplate is fixing complicated, and cost is high, weak heat-dissipating;

(3), LED-baseplate+lens+diffusion cell-shell; Optics light transmittance 86%, optical efficiency is on the low side, and production process is complicated, and cost is high.

4th kind of structure is the structure in embodiment 1, and correction data is as following table:

Implementation	Whole lamp size	Angle	Optics light transmittance	Whole lamp cost	Energy Star
						(1)	Φ60*117	300	83％	In	OK
(2)	Φ60*117	296	86％	High	OK
						(3)	Φ60*117	310	86％	High	OK
(4)	Φ60*117	300.4	96％	Low	OK

Above-mentioned detailed description of the invention is preferred embodiment of the present utility model; can not limit the utility model; the any of other does not deviate from the technical solution of the utility model and the substitute mode of the change made or other equivalence, is included within protection domain of the present utility model.

Claims (5)

1. a new structure LED omnirange bulb lamp, is characterized in that: comprise shell, and outer casing bottom connects lamp holder, radiating piece is imbedded in shell, be provided with pcb board in radiating piece, LED-baseplate comprises LED chip, and LED-baseplate both positive and negative polarity is connected on PCB by tin cream through Reflow Soldering; The some LED lamp bead of circumference branch in LED-baseplate, LED-baseplate outside is cell-shell, and cell-shell material is PC, and cell-shell inner homogeneous is filled with diffusant, and diffusant is a kind of scattering particles, and its diameter is about the isotropic homogeneous bead of 2um-10um.

2. new structure LED omnirange bulb lamp according to claim 1, is characterized in that: described shell is bonded together by glue and cell-shell.

3. new structure LED omnirange bulb lamp according to claim 1, is characterized in that: described cell-shell is in " U " shape structure.

4. new structure LED omnirange bulb lamp according to claim 1, is characterized in that: between described LED lamp bead distance cell-shell 2mm-10mm.

5. new structure LED omnirange bulb lamp according to claim 1, it is characterized in that: described LED lamp bead arranges a circle, the distance between adjacent LED lamp pearl is 10 ~ 20mm.