CN103090307A - Glass lampshade provided with fluorescent powder coating and manufacturing method thereof - Google Patents

Abstract

The invention discloses a glass lampshade provided with a fluorescent powder coating and a manufacturing method of the glass lampshade. The product comprises the glass lampshade. The fluorescent powder coating is arranged on the inner surface of the glass lampshade, and is composed of the following components by weight: 5-20 parts of aluminum oxide, 8-15 parts of yttrium aluminum garnet (YAG) fluorescent powder, 5-15 parts of polyving akohol and 100 parts of pure water, wherein the aluminum oxide particle diameter is 1-500nm, purity of the aluminum oxide is greater than or equal to 99.5%, and the alcoholysis degree of the polyving akohol is greater than or equal to 85%. The glass lampshade provided with the fluorescent powder coating and the manufacturing method of the glass lampshade can effectively enhance the effect of diffuse reflection, expand an irradiation range of a lamp, and effectively improve the dazzling phenomenon of the lamp.

Description

Has glass lamp shade of fluorescent coating and preparation method thereof

Technical field

The present invention relates to a kind of glass lamp shade with fluorescent coating and preparation method thereof.

Background technology

LED utilizes the solid semiconductor chip as luminescent material, has energy-saving and environmental protection and long-life three aspect advantages.Adopt blue chip embedding YAG fluorescent material to produce the preparation method of white light LEDs, its cost is minimum, and is practical, become the main flow of existing market product.But because LED belongs to spot light, during human eye direct-view light source, easily cause dazzle.The dazzle meeting makes people's eye-blurred, and long-time irradiation can cause eye fatigue, and eyes are caused certain damage.

The glare phenomenon that produces for reducing LED light source, what existing lampshade was selected is ground glass and white or vaporific plastics, but both transmitances are all lower, loss to luminous energy is larger, the heat-conducting effect of plastic material is bad in addition, heat radiation on LED light source has certain impact, is unfavorable for that LED works long-term and stably.Because the light exposure at the edge of lampshade is original just few, when LED was luminous, it is dim that the edge of lampshade will show, and not only reduced illumination zone but also affect outward appearance again.The patent No. 201010252068.0: a kind of LED diffuse reflection light-transmittable cover and production technology thereof, diffuse reflection powder placenta percreta are formulated by polyamide PA, polycarbonate resin PC, curing agent, getter, aura liquid, diluent and fluorescent material.This patent complex process, though the effect of the outside transmission of block ultraviolet is arranged, LED light source ultraviolet light composition seldom.The patent No. 201110383624.2: be used for the resin film of LED lamp, being coated with thickness at a side surface of a resin film base material is the fluorescer of 6 ~ 100 microns, and fluorescer is comprised of the transparent silica gel of 16.7 ~ 33.3% yellow fluorescent powder 66.7 ~ 83.3%.In this patent, the silica gel price is high, and resin film base material non-refractory.

Summary of the invention

The object of the present invention is to provide a kind of enhancing diffuse effect, enlarge the range of exposures of light fixture, effectively improve light fixture glare phenomenon have glass lamp shade of fluorescent coating and preparation method thereof.

Technical solution of the present invention is:

A kind of glass lamp shade with fluorescent coating comprises glass lamp shade, it is characterized in that: be provided with fluorescent coating at the glass lamp shade inner surface, described fluorescent coating is grouped into by the one-tenth of following weight portion: alundum (Al2O3) (Al₂O₃) 5-20 part, yttrium-aluminium-garnet (YAG) fluorescent material 8-15 part, polyvinyl alcohol ([C₂H₄O]_n) 100 parts of 5-15 parts, pure water; Wherein the diameter of alundum (Al2O3) particle is 1-500nm, purity 〉=99.5%, the alcoholysis degree of polyvinyl alcohol 〉=85%.

A kind of preparation method with glass lamp shade of fluorescent coating, it is characterized in that: comprise the following steps: alundum (Al2O3) and yttrium aluminium garnet fluorescent powder are mixed to add in pure water to stir more than 20 minutes, and it is ultrasonic more than one hour to put into ultrasonic cleaner, makes even particle distribution; Polyvinyl alcohol adds in the mixing material of alundum (Al2O3) and yttrium aluminium garnet fluorescent powder, is that the hot bath of 70-95 ℃ addedthermal agitation 1 ~ 2 hour in temperature, and polyvinyl alcohol is dissolved fully; Liquid after adding polyvinyl alcohol to dissolve is removed bubble in vacuum environment, took outrear standing 2 ~ 4 hours; Glass lamp shade adopts spraying process or filling is coated with method or print process is coated in the liquid after standing the inner surface of glass lamp shade, then puts into temperature and be the drying in oven of 60-100 ℃.

The glass lamp shade inner surface first cleans and dries with acid and/or alkali before applying fluorescent coating.

The invention has the beneficial effects as follows, this fluorescent material glass coating can be attached to glass surface effectively uniformly, and can guarantee higher uniformity, by this coating, can reduce the difficulty of LED encapsulation, the lampshade by blue chip+contain fluorescent coating just can obtain white light, strengthened significantly the diffuse effect of glass lamp shade, enlarge the range of exposures of light fixture, simultaneously fluorescent material far put and be coated in the quite good glass surface of heat conductivility, improved the thermal characteristics of LED light fixture.The glass lamp shade that this invention is made is applicable to the lightings such as LED bulb lamp, lamp affixed to the ceiling and Down lamp.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples, but the present invention is not limited to following embodiment.

Fig. 1 is a kind of LED bulb lamp profile.

Fig. 2 is a kind of LED lamp affixed to the ceiling profile.

In figure: 1. LED bulb lampglass lamp shade 2. is with fluorescent coating

3. blue ledluminescence chip 4. LED lamp affixed to the ceiling glass lamp shades.

Embodiment 1

Take alundum (Al2O3) (Al₂O₃) 2 grams, YAGfluorescent material 2 grams, polyvinyl alcohol ([C₂H₄O]_n) 1.6 grams, pure water (H₂O) 18 grams.First alundum (Al2O3) and YAG fluorescent material are mixed, putting into pure water stirs, with ultrasonic echography one hour, slowly add again polyvinyl alcohol, stir with 90 ℃ of heating water baths of temperature and obtained thick liquid in two hours, under room temperature cooling one hour, then put into vacuum environment and eliminate bubble, last standing two hours, get final product to get a kind of glass coating that contains fluorescent material; Wherein the diameter of alundum (Al2O3) particle is 1-500nm(example 1 nm, 50 nm, 100 nm), purity 〉=99.5%, the alcoholysis degree of polyvinyl alcohol 〉=85%.

Clean the inwall of LED bulb lamp glass lamp shade (1) as shown in Figure 1 with soda acid (hydrochloric acid and/or NaOH), oven dry (also can not adopt soda acid to clean), then adopt to fill with and be coated with the method coating, namely first coating liquid is poured into, rock its inwall all is covered by the coating, that Open Side Down is standing with lampshade again, after unnecessary liquid is flowed out, puts into 80 ℃ of drying in oven and gets final product.After employing contained this coated glass lampshade, the LED bulb lamp can send white light, and without obviously dazzle, uniformity is fine, light efficiency＞90lm/w, colour rendering index＞70.

Embodiment 2

Take alundum (Al2O3) (Al₂O₃) 1.8 grams, YAG fluorescent material 2.1 grams, polyvinyl alcohol ([C₂H₄O]_n) 1.6 grams, pure water (H₂O) 18 grams.First alundum (Al2O3) and YAG fluorescent material are mixed, putting into pure water stirs, with ultrasonic echography one and a half hours, slowly add again polyvinyl alcohol, stir with 90 ℃ of heating water baths of temperature and obtained a thick liquid in, cooling half an hour under room temperature, then put into vacuum environment and eliminate bubble, last standing three hours, get final product to get a kind of glass coating that contains fluorescent material; Wherein the diameter of alundum (Al2O3) particle is 1-500nm(example 1 nm, 50 nm, 100 nm), purity 〉=99.5%, the alcoholysis degree of polyvinyl alcohol 〉=85%.Clean the inwall of LED lamp affixed to the ceiling glass lamp shade (4) as shown in Figure 2 with soda acid, oven dry (also can not adopt soda acid to clean), then adopt to fill with and be coated with the method coating, namely first coating liquid is poured into, rock its inwall all is covered by the coating, that Open Side Down is standing for lampshade again, after unnecessary liquid is flowed out, puts into 90 ℃ of drying in oven and gets final product.After employing contained this coated glass lampshade, the LED lamp affixed to the ceiling can send white light, and without obviously dazzle, uniformity is better.

Embodiment 3

Alundum (Al2O3) and yttrium aluminium garnet fluorescent powder are mixed to add in pure water stir more than 20 minutes, and put into the ultrasonic 1-2 of ultrasonic cleaner hour, make even particle distribution; Polyvinyl alcohol adds in the mixing material of alundum (Al2O3) and yttrium aluminium garnet fluorescent powder, and the hot bath that is 70-95 ℃ (70 ℃, 85 ℃, 95 ℃ of examples) in temperature addedthermal agitation 1 ~ 2 hour, and polyvinyl alcohol is dissolved fully; Liquid after adding polyvinyl alcohol to dissolve is removed bubble in vacuum environment, took outrear standing 2 ~ 4 hours; Glass lamp shade adopts spraying process or filling is coated with method or print process is coated in the liquid after standing the inner surface of glass lamp shade, and then putting into temperature is the drying in oven of 60-100 ℃ (60 ℃, 85 ℃, 100 ℃ of examples).After employing contained this coated glass lampshade, the LED bulb lamp can send white light, and without obviously dazzle, uniformity is fine, light efficiency＞90lm/w, colour rendering index＞70.

Each composition consumption: 100 parts of alundum (Al2O3) 5-20 parts (5 parts, 13 parts, 20 parts of examples), yttrium aluminium garnet fluorescent powder 8-15 part (8 parts, 13 parts, 15 parts of examples), polyvinyl alcohol 5-15 part (5 parts, 8 parts, 15 parts of examples), pure water; Wherein the diameter of alundum (Al2O3) particle is 1-500nm(example 1 nm, 50 nm, 100 nm), purity 〉=99.5%, the alcoholysis degree of polyvinyl alcohol 〉=85%.

Claims (3)

1. glass lamp shade with fluorescent coating, comprise glass lamp shade, it is characterized in that: be provided with fluorescent coating at the glass lamp shade inner surface, described fluorescent coating is grouped into by the one-tenth of following weight portion: 100 parts of alundum (Al2O3) 5-20 parts, yttrium aluminium garnet fluorescent powder 8-15 part, polyvinyl alcohol 5-15 part, pure water; Wherein the diameter of alundum (Al2O3) particle is 1-500nm, purity 〉=99.5%, the alcoholysis degree of polyvinyl alcohol 〉=85%.

2. preparation method with glass lamp shade of fluorescent coating claimed in claim 1, it is characterized in that: comprise the following steps: alundum (Al2O3) and yttrium aluminium garnet fluorescent powder are mixed to add in pure water to stir more than 20 minutes, and it is ultrasonic more than one hour to put into ultrasonic cleaner, makes even particle distribution; Polyvinyl alcohol adds in the mixing material of alundum (Al2O3) and yttrium aluminium garnet fluorescent powder, is that the hot bath of 70-95 ℃ added thermal agitation 1 ~ 2 hour in temperature, and polyvinyl alcohol is dissolved fully; Liquid after adding polyvinyl alcohol to dissolve is removed bubble in vacuum environment, took out rear standing 2 ~ 4 hours; Glass lamp shade adopts spraying process or filling is coated with method or print process is coated in the liquid after standing the inner surface of glass lamp shade, then puts into temperature and be the drying in oven of 60-100 ℃.

3. the preparation method with glass lamp shade of fluorescent coating according to claim 2 is characterized in that: the glass lamp shade inner surface first cleans and dries with acid and/or alkali before applying fluorescent coating.

Images