GB2262439A - Preventing misting in mirrors - Google Patents
Preventing misting in mirrors Download PDFInfo
- Publication number
- GB2262439A GB2262439A GB9223432A GB9223432A GB2262439A GB 2262439 A GB2262439 A GB 2262439A GB 9223432 A GB9223432 A GB 9223432A GB 9223432 A GB9223432 A GB 9223432A GB 2262439 A GB2262439 A GB 2262439A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- wall
- misting
- electrical resistance
- avoid
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H05B3/845—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields specially adapted for reflecting surfaces, e.g. bathroom - or rearview mirrors
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
- A47G1/02—Mirrors used as equipment
Landscapes
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Abstract
A device to avoid the formation of misting on a mirror; comprising a wall of heat conducting material 11 eg of brick having a mirror 13 attached on one of its sides; an electrical resistance heater 14 connected to a power supply, for heating the wall; and a layer of insulating material. <IMAGE>
Description
DEVICE INCORPORATED INTO A MIRROR TO AVOID
THE FORMATION OF MISTING
The present invention refers to a device incorporated into a mirror to avoid the formation of misting.
The problem is already known that arises when misting is formed on a mirror so that nothing can be seen in it, for example, in bathrooms, automobiles, etc., that is, while the misting covers the mirror the latter is practically unusable until the misting is cleaned off.
This problem is known from physical principles, that is, that misting occurs when the temperature of the mirror is lower than that of the dew point.
The intention of the invention is to design a simple and novel device that keeps the temperature of the mirror above the dew point.
This device can be used, because of its make-up, to form part of all types, qualities, shape and size of mirrors, allowing all classes of finishes, frames and incorporation with the furnishings or construction of the wall behind the mirror, and also on cupboard doors and the walls or bases of bathroom cabinets.
According to the present invention there is provided a device to avoid the formation of misting on a mirror; comprising a wall of heat conducting material having a mirror attached on one of its sides; an electrical resistance heater connected to a power supply, for heating said wall; and a layer of insulating material that forms the other side of the wall adjacent the mirror.
The heating of the mirror is by the Joule effect, for example using flat, printed or spiral type resistances.
The device has the great advantage of being simple in its constructional aspect and also presents no difficulties in installation or use.
This wall has a heating system consisting of an electrical resistance that is plugged into the power line using a conductor, and by means of this the electrical resistance is heated and one of its surfaces is attached to the mirror while on the opposite surface is attached a layer of insulation material to form a partition to protect the resistance and also avoid heat losses taking place.
The heat transmitted by the wall is used to heat the mirror.
It is obvious that the wall must be of a heat transmitting or conducting material and also have a considerable calorific capacity. This material may be refractory bricks, etc.
The wall may instead simply be a partition.
Also, the lateral surface of the heat transmitting wall may be covered by insulating material to avoid heat losses.
The layout and number of electrical resistances is variable and also the heat transfer medium may be the air in a seating made for this reason in the partition and which is attached to the mirror, in which case the electrical resistance may be inside this seating which is closed by the top insulation partition.
In order to more easily understand not only the make-up but also the actual use the the object of the invention, reference is made below to variQus practical examples made up, the said examples being'merely enunciative and in no case limiting the invention1 all as shown in the attached drawings, in which:
Figure I shows a side view of, for example, a bathroom cabinet including a mirror with the invention device.
Figure 2 shows a side view of the stratification of the layers of the device attached to a mirror.
Figure 3 shows a sectional view of the whole mirror and device.
Figure 4 shows a side view of a variation in the make-up of the device.
Figure 5 shows a side view of a variation in the make-up of the device.
Figure 6 shows a front view of the invented device.
Figure 7 shows a sectional view of the line VII-VII of Figure 6.
With reference to the drawings, these show: in Figures 1, 2 and 3 the device 1 that is placed on the reflecting surface 2 of the glass 3.
As is known the glass 3 and the reflecting surface 2 form the mirror.
To the reflecting surface is adhered the body of the device 1 formed by a sandwich-like group made up of a layer 4 of electrical insulation to which is attached another formed by an electrical resistance 5, on which goes another layer the same as layer 4.
On the layer 6 is attached another of thermal insulation 7 and on this a last protective layer 8, for example, fibre glass with polyester or plastic or metal.
The device -thus formed by the layers 4, 5, 6, 7 and 8 can go into an invisible frame 9 and the whole with the mirror into a fame 10.
The electrical resistance may consist of a device appropriate for electrical resistances with an already known connection to the power line.
The device 1 in Figure 4 is formed by a wall or partition 11, for example of brick 12, on one of whose end faces is attached the mirror 13 while on the other face appears an electrical resistance 14 covered by insulation 15 to form a partition.
The electrical resistance 14 is connected to the power line by a plug 16.
By the Joule effect the partition 2 is heated by means of the electrical resistance 14 and this heat is transmitted to the surface of the mirror 13 that must have a temperature above dew point to avoid the formation of misting on its front face.
In order for the resistance to work, a thermostat is used that starts the resistance when the temperature of the mirror is below dew point. Also, the general working of the electrical resistance starts when the light is turned on, for example, in the bathroom.
Claims (3)
1. A device to avoid the formation of misting on a mirror; comprising a wall of heat conducting material having a mirror attached on one of its sides; an electrical resistance heater connected to a power supply, for heating said wall; and a layer of insulating material that forms the other side of the wall adjacent the mirror.
2. A device according to claim 1, wherein the electrical resistance heater is adapted to be connected to the power supply to be turned on when the light switch is turned on, as in a bathroom; and the resistance is activated by a thermostat when the temperature on the mirror is below dew point.
3. A device to avoid the misting of a mirror, substantially as hereinbefore described with reference to, and as illustrated in, Figure 4 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9103798U ES1019718Y (en) | 1991-12-17 | 1991-12-17 | DEVICE BUILT INTO A MIRROR TO PREVENT THE FORMATION OF MIST. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9223432D0 GB9223432D0 (en) | 1992-12-23 |
| GB2262439A true GB2262439A (en) | 1993-06-23 |
Family
ID=8275469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9223432A Withdrawn GB2262439A (en) | 1991-12-17 | 1992-11-09 | Preventing misting in mirrors |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES1019718Y (en) |
| GB (1) | GB2262439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7003218B2 (en) * | 2003-01-18 | 2006-02-21 | Dräger Medical AG & Co. KGaA | Heatable incubator hood and process for regulating the tempurature of an incubator hood |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1568665A (en) * | 1976-11-18 | 1980-06-04 | Hoy C | Mirror assemblies |
| US4237366A (en) * | 1979-03-19 | 1980-12-02 | Texas Instruments Incorporated | Heated automobile mirror |
| FR2652493A1 (en) * | 1989-09-29 | 1991-04-05 | Ingenierie Batiment | Bathroom mirror |
| GB2242831A (en) * | 1988-11-18 | 1991-10-16 | Maistre Geoffrey Francis Le | Prevention of condensation on a mirror |
| GB2251379A (en) * | 1990-11-12 | 1992-07-08 | Trevor John Johnson | Mirror assembly |
-
1991
- 1991-12-17 ES ES9103798U patent/ES1019718Y/en not_active Expired - Fee Related
-
1992
- 1992-11-09 GB GB9223432A patent/GB2262439A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1568665A (en) * | 1976-11-18 | 1980-06-04 | Hoy C | Mirror assemblies |
| US4237366A (en) * | 1979-03-19 | 1980-12-02 | Texas Instruments Incorporated | Heated automobile mirror |
| GB2242831A (en) * | 1988-11-18 | 1991-10-16 | Maistre Geoffrey Francis Le | Prevention of condensation on a mirror |
| FR2652493A1 (en) * | 1989-09-29 | 1991-04-05 | Ingenierie Batiment | Bathroom mirror |
| GB2251379A (en) * | 1990-11-12 | 1992-07-08 | Trevor John Johnson | Mirror assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7003218B2 (en) * | 2003-01-18 | 2006-02-21 | Dräger Medical AG & Co. KGaA | Heatable incubator hood and process for regulating the tempurature of an incubator hood |
Also Published As
| Publication number | Publication date |
|---|---|
| ES1019718U (en) | 1992-05-01 |
| GB9223432D0 (en) | 1992-12-23 |
| ES1019718Y (en) | 1993-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |