WO2000002220A2 - Color lamp - Google Patents
Color lamp Download PDFInfo
- Publication number
- WO2000002220A2 WO2000002220A2 PCT/KR1999/000351 KR9900351W WO0002220A2 WO 2000002220 A2 WO2000002220 A2 WO 2000002220A2 KR 9900351 W KR9900351 W KR 9900351W WO 0002220 A2 WO0002220 A2 WO 0002220A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bulb
- lamp
- color
- cobalt
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K9/00—Lamps having two or more incandescent bodies separately heated
- H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
Definitions
- the present invention relates to a color lamp, and more specifically to
- the color of lamp is
- the desirable coating material is that of high light-transmission
- the color coating method of coating the dielectric material on the surface of bulb by way of
- the dielectric materials are classified to high deflection material and
- Ti ⁇ 2 and AI2O3 are high deflection materials, and Si ⁇ 2
- MgF2 are the low deflection materials.
- the high deflection material and low deflection material are changed.
- the high deflection material and low deflection material are changed.
- bulb may be colored to thin yellow or deep blue. If the bulb is colored to
- the color temperature of lamp may be heighten to about 3900k to
- illuminance is about 1550 lx, but if the bulb is coated with dielectric material
- the illuminance is about 780 lx, which is about as half as the ordinary transparent bulb. Therefore, it is required to achieve a color lamp - which has a higher color temperature and as well as higher illuminance.
- the invention is suggested to solve the above mentioned problems and
- the object of the invention is to provide a colored lamp which emit a natural
- cobalt is applied on the surface of bulb (2) and heat- melted to be coated on
- FIG. 1 shows the embodiment of the invention.
- Figure 2 shows the front view of the embodiment
- Figure 1 shows an embodiment of the invention, which is applied on the halogen lamp for the headlight of car.
- the halogen lamp has a bulb (2)
- the cobalt is used as fine powders and the phosphorus is
- the liquid boding agent should have certain degree of
- the thickness of cobalt layer may be
- the coated bulb (2) should be
- the dry step should be
- the bul (2) will be heated on the temperature of 450 ° C to 600 ° C so that the melted cobalt is bonded on the
- the base(4) should be mounted on
- the shape of base(2) may be changed according to the
- the lamp according to the invention will show the sky blue color
- halogen lamp of 13.2V and 60W according to the invention
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The present invention relates to a color lamp which could emit a natural light-like and higher illuminance light. According to the invention, there is provided a lamp having a bulb (2) and a base (4) on the bottom of bulb (2), which is characterized in that a cobalt is applied on the surface of bulb (2) and heat-melted to be coated on the surface of bulb (2).
Description
COLOR LAMP
FIELD OF THE INVENTION
The present invention relates to a color lamp, and more specifically to
a color lamp which could emit a natural light-like and higher illuminance
light.
BACKGROUND OF THE INVENTION
Generally, it is known that if the color of lamp light is white like sun
light, it is less dazzling though it has high illuminance, and it could realize
the natural color of object without color distortion. The color of lamp is
expressed in term of color temperature. The highest color temperature is 600k
of sun light, and if the value of color temperature is higher, the color of it is
nearer to white. But, the ordinary lamp of transparent or white bulb is about
3000k of color temperature, which inevitably shows the dazzling and color
distortion.
A method to solve the above mentioned problems is to change the
color temperature of lamp by providing proper color coating on the surface of
lamp bulb. The desirable coating material is that of high light-transmission
ratio and of high heat resistance. To meet the purpose, the color coating
method of coating the dielectric material on the surface of bulb by way of
>• vacuum deposition is generally adopted.
The dielectric materials are classified to high deflection material and
low deflection material. Tiθ2 and AI2O3 are high deflection materials, and Siθ2
and MgF2 are the low deflection materials. By selecting the materials and
adjusting the thickness of coating layer, a certain wave length of light is
blocked to pass through the coated bulb so that the color of lamp should be
changed. In general, the high deflection material and low deflection material
are alternately coated into a plurality of layers. According to the thickness of
coating layers of high deflection material and low deflection materials, the
bulb may be colored to thin yellow or deep blue. If the bulb is colored to
deep blue, the color temperature of lamp may be heighten to about 3900k to
4000k, which will lessen the dazzling and color distortion.
But, in order to reach the above mentioned goal, the coating materials
are to be layered to considerable numbers of layers, for example, 10 to 14
layers. This will result in low level of light transmission ratio, therefore, it
could be impossible to achieve a desirable level of illuminance. For example,
in case of halogen lamp of 13.2V and 60W, if a transparent bulb is used, the
illuminance is about 1550 lx, but if the bulb is coated with dielectric material
as mentioned above, the illuminance is about 780 lx, which is about as half as
the ordinary transparent bulb. Therefore, it is required to achieve a color lamp - which has a higher color temperature and as well as higher illuminance.
SUMMARY OF THE INVENTION
The invention is suggested to solve the above mentioned problems and
the object of the invention is to provide a colored lamp which emit a natural
light- like light of higher illuminance.
According to the invention, there is provided a lamp having a bulb (2)
and a base(4) on the bottom of bulb(2), which is characterized in that a
cobalt is applied on the surface of bulb (2) and heat- melted to be coated on
the surface of bulb (2).
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows the embodiment of the invention.
Figure 2 shows the front view of the embodiment
DETAILED DESCRIPTION OF THE INVENTION
Now, the invention will be described below in detail based on the
drawings. Figure 1 shows an embodiment of the invention, which is applied
on the halogen lamp for the headlight of car. The halogen lamp has a bulb (2)
> and a base(4) on the bottom of the bul (2) adapted to insert into the socket
connected to power supply. And as shown in Figure 2, a cobalt is coated on
the surface of bulb(2). The process of cobalt coating(β) on the bulb (2) will be
described below.
First, cobalt and phosphorus are mixed on the liquid bonding agent in
a certain ratio to get a cobalt solution, and the cobalt solution should be
sprayed on the surface of bulb(2), or the bulb (2) may be dipped into the
cobalt solution. The cobalt is used as fine powders and the phosphorus is
used as dispersing agent to disperse the cobalt particles into the liquid
bonding agent. The liquid boding agent should have certain degree of
viscosity, and any kind of bonding agent may be available so far as it does
not have negative effect on the properties of cobalt and phosphorus. By
adjusting the amount of sprayed agent, or by adjusting the dipping time of
bulb(2) into liquid bonding agent, the thickness of cobalt layer may be
adjusted.
After the cobalt layer has been coated, the coated bulb (2) should be
dried on the temperature of 80 °C to 120 °C . Preferably, the dry step should be
processed on clean room so that the dust may not stick on the bulb. After
the coating(β) has been dried up, the bul (2) will be heated on the
temperature of 450 °C to 600 °C so that the melted cobalt is bonded on the
> • surface of bulb (2).
After the heat-melt bonding step, the base(4) should be mounted on
the bottom of bulb(2). The shape of base(2) may be changed according to the
type of lamps.
The lamp according to the invention will show the sky blue color
because of the coated cobalt layer, and will reveal the color temperature of
about 3200k to 3900k depending on the thickness of coating layer. Therefore,
it will achieve higher color temperature than 3000k of conventional transparent
lamp, and the dazzling and color distortion could be reduced. And, as the
color temperature is easily controlled by adjusting the thickness of cobalt
coating layer, the number of coating layers will be remarkably reduced, which
will result in the improved light transmission ratio and heighten illuminance.
For example, the halogen lamp of 13.2V and 60W according to the invention
will achieve remarkably improved illuminance of 1350 lx than ordinary color
lamp of 780 lx.
According to the invention as mentioned above, cobalt coating is
applied and heat-melted on the surface of bulb (2) of lamp , so that the color
lamp which could emit a natural like-light with higher illuminance will be
achieved.
Claims
CLAIMS - 1. A lamp having a bulb(2) and a base(4) on the bottom of bulb(2),
which is characterized in that a cobalt is applied on the surface of bulb (2)
and heat- melted to be coated on the surface of bulb (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR19980026843 | 1998-07-03 | ||
| KR1998/26843 | 1998-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2000002220A2 true WO2000002220A2 (en) | 2000-01-13 |
| WO2000002220A3 WO2000002220A3 (en) | 2000-03-30 |
Family
ID=19543010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR1999/000351 Ceased WO2000002220A2 (en) | 1998-07-03 | 1999-07-01 | Color lamp |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2000002220A2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3748170A (en) * | 1970-09-04 | 1973-07-24 | North American Rockwell | Method of coating metal |
| DE2136012A1 (en) * | 1971-07-19 | 1973-02-01 | Patra Patent Treuhand | ELECTRIC LAMP WITH LIGHT COVERING COVER |
| DE2363812C3 (en) * | 1973-01-15 | 1980-07-10 | Veb Narva, Ddr 1017 Berlin | Thermally heavy-duty, opaque coating for lamp bulbs |
| WO1993011277A1 (en) * | 1991-11-29 | 1993-06-10 | Nippon Steel Hardfacing Co., Ltd. | Process for producing immersion member of molten metal bath |
| JPH08165554A (en) * | 1994-12-12 | 1996-06-25 | Kubota Corp | Member for molten metal bath and material for forming sprayed coating |
-
1999
- 1999-07-01 WO PCT/KR1999/000351 patent/WO2000002220A2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000002220A3 (en) | 2000-03-30 |
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