CA1200651A - Thermo-electric cooled headgear - Google Patents
Thermo-electric cooled headgearInfo
- Publication number
- CA1200651A CA1200651A CA000439419A CA439419A CA1200651A CA 1200651 A CA1200651 A CA 1200651A CA 000439419 A CA000439419 A CA 000439419A CA 439419 A CA439419 A CA 439419A CA 1200651 A CA1200651 A CA 1200651A
- Authority
- CA
- Canada
- Prior art keywords
- heat pump
- heat
- headgear
- cavity
- shell
- 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.)
- Expired
Links
Abstract
ABSTRACT OF THE DISCLOSURE
A motorcycle helmet (10) defines a cavity (13) in a hard fiber shell (17). A thermo-electric heat pump (12) is mounted in the cavity, and a light metal radiator (15) is bonded to both shell (17) and pump (12). One way conductors (14) energize the heat pump (12) from a motorcycle battery source to pump heat from the hard fiber shell (17) to the radiator (15). A
flexible bladder (20) filled with heat transfer liquid is mounted in the hard fiber shell (17) and below the heat pump (12) and in thermal contact with a wearer's head and the heat pump (12), for conducting head heat to the pump (12) to electrically pump to the radiator (15) for radiation to the atmosphere.
A motorcycle helmet (10) defines a cavity (13) in a hard fiber shell (17). A thermo-electric heat pump (12) is mounted in the cavity, and a light metal radiator (15) is bonded to both shell (17) and pump (12). One way conductors (14) energize the heat pump (12) from a motorcycle battery source to pump heat from the hard fiber shell (17) to the radiator (15). A
flexible bladder (20) filled with heat transfer liquid is mounted in the hard fiber shell (17) and below the heat pump (12) and in thermal contact with a wearer's head and the heat pump (12), for conducting head heat to the pump (12) to electrically pump to the radiator (15) for radiation to the atmosphere.
Description
THERMO-ELECTRIC COOLED HEADGEAR
BACKGROUND OF THE INVENTION
The invention generally comprises tempera-ture or air conditioned headgear such as safety helmets and more particularly thermo-electric cooled motorcycle helmets.
The prior art discloses air conditioning a safety helmet by evaporation of liquid, such as in Waters US patent 3,548,415 and -the use of a small electrically energized fan. Thermo-elec-tric cooling is taught by Lefferts, US patent 3,314,242 for use in scientific laboratories and in exothermic reactions.
The present invention teaches cooling a safety helmet with a thermo-electric heat pump adapted to and installed in said safety helmet in accordance with U.S.A. Federal Motor Vehicle Standards.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a thermo-elec-tric cooled headgear comprising the following:
a) a hard shell having a cavity defined in and through the shell;
b) thermo-electric heat pump means mounted in the cavity;
c) thermal radia-tion means closing the cavity and extending along a portion of the exterior of the shell, the -termal radia-tion means being connected to the heat pump means whereby heat is transferred by the heat pump means through the cavity and from the heat pump means for heat radiation from the radia-tion means;
d) insulated electrical conduction means opera-tionally connected to the heat pump means and connectable to an electrical power source for energizing the heat pump to electrically pump heat to the radiation means; and, e) liquid heat transfer means mounted in -the headgear for transferring heat between a wearer's hea~ and the hea-t pump, the liquid heat transfer means comprising bladder means conformable in shape to the con-tour of a wearer's head, the bladder means being ~.
.
~0~)6~
- la -fillable with a heat transfer liquid whereby hea-t transfer liquid convection currents transfer heat from the wearer's head, around the contour, and to the heat pump means.
The headgear of the present invention may be configured such that it is for wear when riding a motorcycle in which case -the insulated electrical conduction means may be adapted to connect to a motorcycle direct current electrical power source. Pre-ferably, -the thermo-electric heat pump means is mount in the cavity in such a manner that the heat pump means does not significantly protrude into the head-accommodating space defined by the hard shell. Also preferable is that the cavity be through the top of the shell, that -the thermo-electric heat pump means be mounted in the cavity flush with the top of the shell, and that the thermal radiation means closes the cavity at the top of the shell.
The thermal radiation means may comprise a hardened, light-metal radiation member secured to the shell by bonding and press-engaging pins into the hard shell. The electrical conduction means may comrpise a one-way flow diode connec-ted therein. The liquid heat transfer means may comprise a flexible bladder fillable with a heat transfer liquid and connected -to the heat pump means (preferably, mounted below the heat pump means) for bladder contact with a wearer's head and with the heat pump.
It is an object of the invention to adapt the teaching of a natural law, as disclosed by the Seebeck, Peltier, and Thomson effects, to the cooling of a motorcycle helmet as Lef-ferts did to the heating and cooling of portable heating and cooling devices for laboratory use.
Ano-ther object of the invention is to cool a motorcycle safety helmet with electrical means and with moving par-ts.
The foregoing and other objects of the invention will be apparent from the following disclosure, drawings and claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side view of a motorcycle safety helmet with thermo-electric hea-t pump and connecting wires in dashed lines indica-ting interior mounting;
, ,, I,,'~)()~S~
BACKGROUND OF THE INVENTION
The invention generally comprises tempera-ture or air conditioned headgear such as safety helmets and more particularly thermo-electric cooled motorcycle helmets.
The prior art discloses air conditioning a safety helmet by evaporation of liquid, such as in Waters US patent 3,548,415 and -the use of a small electrically energized fan. Thermo-elec-tric cooling is taught by Lefferts, US patent 3,314,242 for use in scientific laboratories and in exothermic reactions.
The present invention teaches cooling a safety helmet with a thermo-electric heat pump adapted to and installed in said safety helmet in accordance with U.S.A. Federal Motor Vehicle Standards.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a thermo-elec-tric cooled headgear comprising the following:
a) a hard shell having a cavity defined in and through the shell;
b) thermo-electric heat pump means mounted in the cavity;
c) thermal radia-tion means closing the cavity and extending along a portion of the exterior of the shell, the -termal radia-tion means being connected to the heat pump means whereby heat is transferred by the heat pump means through the cavity and from the heat pump means for heat radiation from the radia-tion means;
d) insulated electrical conduction means opera-tionally connected to the heat pump means and connectable to an electrical power source for energizing the heat pump to electrically pump heat to the radiation means; and, e) liquid heat transfer means mounted in -the headgear for transferring heat between a wearer's hea~ and the hea-t pump, the liquid heat transfer means comprising bladder means conformable in shape to the con-tour of a wearer's head, the bladder means being ~.
.
~0~)6~
- la -fillable with a heat transfer liquid whereby hea-t transfer liquid convection currents transfer heat from the wearer's head, around the contour, and to the heat pump means.
The headgear of the present invention may be configured such that it is for wear when riding a motorcycle in which case -the insulated electrical conduction means may be adapted to connect to a motorcycle direct current electrical power source. Pre-ferably, -the thermo-electric heat pump means is mount in the cavity in such a manner that the heat pump means does not significantly protrude into the head-accommodating space defined by the hard shell. Also preferable is that the cavity be through the top of the shell, that -the thermo-electric heat pump means be mounted in the cavity flush with the top of the shell, and that the thermal radiation means closes the cavity at the top of the shell.
The thermal radiation means may comprise a hardened, light-metal radiation member secured to the shell by bonding and press-engaging pins into the hard shell. The electrical conduction means may comrpise a one-way flow diode connec-ted therein. The liquid heat transfer means may comprise a flexible bladder fillable with a heat transfer liquid and connected -to the heat pump means (preferably, mounted below the heat pump means) for bladder contact with a wearer's head and with the heat pump.
It is an object of the invention to adapt the teaching of a natural law, as disclosed by the Seebeck, Peltier, and Thomson effects, to the cooling of a motorcycle helmet as Lef-ferts did to the heating and cooling of portable heating and cooling devices for laboratory use.
Ano-ther object of the invention is to cool a motorcycle safety helmet with electrical means and with moving par-ts.
The foregoing and other objects of the invention will be apparent from the following disclosure, drawings and claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side view of a motorcycle safety helmet with thermo-electric hea-t pump and connecting wires in dashed lines indica-ting interior mounting;
, ,, I,,'~)()~S~
-2-Figure 2 is a three aimensional drawing of a thermo~electric heat pump;
Figure 3 is a l.ongitudinal cross-sectional view of the helmet of Figure l;
Figure ~ is a three dimensional view of a bladder top.
DETAILED DE~CRIPTION OF THE l~v~ ION
Referring to Figures 1-4, a safety motorcycle helmet 10 completely encloses the head of a wearer and is very hot to wear. A heat pump 12, having upper hot and lower cold plates, is mounted in a cavity 13 defined in the top of helmet 10. Insulated electrical conductors 14 connect heat pump 12 to a motorcycle battery (not shown). A radiator shell 15 is fixed by anchor pins 16 an~ bonded to a hard fiber helmet shell 17 for the double purpose of closing said cavity 13 an~
~or radiating heat from heat pump 12 upper hot plate.
A hard foam helmet liner 18, defining a continuation of cavity 13, is bonded to the inne~ surface of hard fiber shell 17. An elas~ic bladder 20 is bonded to foam liner 18 and extends upwardly into the caYity 130 The bladder 20 has a filler tube 22 extending downwardly in helmet 10 for filling said bladder 20 with a heat transfer liquid, preferably water in temperate climes. Bladder 20 is also attached to foam liner 18 to form dimples 24 along bladder centerline without blocking passage on either side of the dimples of heat transfer liquid convection currents. Sponges 26 ar~
pressed into dimples 24 and into cavity 13 below bladder 20 to respectively maintain said dimples' shapes, and to support bladder 20 in the cavity.
square metal top or cover 28, having depending fins 30 closes the upwardly extending opening of the bladder 20. Cover 28 is d.imensioned to conform with the bottom l~o~
of heat pump 12 to which it is bonded makin~ heat transfer liquid to metal to met~l contacts for the more efficient transfer of heat thereby.
In operation, electrical conductors 14, one of which includes a diode for restricting a flow of current to one direction only, is engaged through a connector (not shown) to said motorcycle battery for the one way current to flow to cool the lower plate side of heat pump 12 that is bonded ~o bladder square top 28. Helmet wearer's head heat is transferred by direct contact to bladder 20 to heat transfer liquid contained therein, to bladder top cover 28 to said cooled lower plate and is electrically pumped to said upper hot plate and tansferred by contact with radiator shell 15 to ambient atmosphere, and dispersed therefrom b~ airflow around helmet 10.
The helmet of the invention conforms to all U.S.A.
Federal Motor Vehicle Safety Standards and Regulations FMVSS No. 218 Motorcycle Helmets, and particularly with restrictions of projections above and below said hard fiber shell 17.
Electro-thermal pumps are obtainable from Marlow Industries Inc., 1021 S. Jupiter Road, Garland, Texas 75042~
`'`'`"
Figure 3 is a l.ongitudinal cross-sectional view of the helmet of Figure l;
Figure ~ is a three dimensional view of a bladder top.
DETAILED DE~CRIPTION OF THE l~v~ ION
Referring to Figures 1-4, a safety motorcycle helmet 10 completely encloses the head of a wearer and is very hot to wear. A heat pump 12, having upper hot and lower cold plates, is mounted in a cavity 13 defined in the top of helmet 10. Insulated electrical conductors 14 connect heat pump 12 to a motorcycle battery (not shown). A radiator shell 15 is fixed by anchor pins 16 an~ bonded to a hard fiber helmet shell 17 for the double purpose of closing said cavity 13 an~
~or radiating heat from heat pump 12 upper hot plate.
A hard foam helmet liner 18, defining a continuation of cavity 13, is bonded to the inne~ surface of hard fiber shell 17. An elas~ic bladder 20 is bonded to foam liner 18 and extends upwardly into the caYity 130 The bladder 20 has a filler tube 22 extending downwardly in helmet 10 for filling said bladder 20 with a heat transfer liquid, preferably water in temperate climes. Bladder 20 is also attached to foam liner 18 to form dimples 24 along bladder centerline without blocking passage on either side of the dimples of heat transfer liquid convection currents. Sponges 26 ar~
pressed into dimples 24 and into cavity 13 below bladder 20 to respectively maintain said dimples' shapes, and to support bladder 20 in the cavity.
square metal top or cover 28, having depending fins 30 closes the upwardly extending opening of the bladder 20. Cover 28 is d.imensioned to conform with the bottom l~o~
of heat pump 12 to which it is bonded makin~ heat transfer liquid to metal to met~l contacts for the more efficient transfer of heat thereby.
In operation, electrical conductors 14, one of which includes a diode for restricting a flow of current to one direction only, is engaged through a connector (not shown) to said motorcycle battery for the one way current to flow to cool the lower plate side of heat pump 12 that is bonded ~o bladder square top 28. Helmet wearer's head heat is transferred by direct contact to bladder 20 to heat transfer liquid contained therein, to bladder top cover 28 to said cooled lower plate and is electrically pumped to said upper hot plate and tansferred by contact with radiator shell 15 to ambient atmosphere, and dispersed therefrom b~ airflow around helmet 10.
The helmet of the invention conforms to all U.S.A.
Federal Motor Vehicle Safety Standards and Regulations FMVSS No. 218 Motorcycle Helmets, and particularly with restrictions of projections above and below said hard fiber shell 17.
Electro-thermal pumps are obtainable from Marlow Industries Inc., 1021 S. Jupiter Road, Garland, Texas 75042~
`'`'`"
Claims (8)
1. Thermo-electric cooled headgear comprising:
a) a hard shell having a cavity defined in and through said hard shell;
b) thermo-electric heat pump means mounted in said cavity;
c) thermal radiation means closing said cavity and extending along a portion of the exterior of said shell, said thermal radiation means being connected to said heat pump means whereby heat is transferred by said heat pump means through said cavity and from said heat pump means for heat radiation from said radiation means;
d) insulated electrical conduction means operationally connected to said heat pump means and connectable to an electrical power source for energizing said heat pump to electrically pump heat to said radiation means; and, e) liquid heat transfer means mounted in said headgear for transferring heat between a wearer's head and said heat pump, said liquid heat transfer means comprising bladder means conformable in shape to the contour of a wearer's head, said bladder means being fillable with a heat transfer liquid whereby heat transfer liquid convection currents transfer heat from the wearer's head, around said contour, and to said heat pump means.
a) a hard shell having a cavity defined in and through said hard shell;
b) thermo-electric heat pump means mounted in said cavity;
c) thermal radiation means closing said cavity and extending along a portion of the exterior of said shell, said thermal radiation means being connected to said heat pump means whereby heat is transferred by said heat pump means through said cavity and from said heat pump means for heat radiation from said radiation means;
d) insulated electrical conduction means operationally connected to said heat pump means and connectable to an electrical power source for energizing said heat pump to electrically pump heat to said radiation means; and, e) liquid heat transfer means mounted in said headgear for transferring heat between a wearer's head and said heat pump, said liquid heat transfer means comprising bladder means conformable in shape to the contour of a wearer's head, said bladder means being fillable with a heat transfer liquid whereby heat transfer liquid convection currents transfer heat from the wearer's head, around said contour, and to said heat pump means.
2. The headgear of claim 1 wherein said thermal radiation means comprises:
a) a hardened, light-metal radiation member secured to said shell by bonding and press-engaging pins into said hard shell.
a) a hardened, light-metal radiation member secured to said shell by bonding and press-engaging pins into said hard shell.
3. The headgear of claim 1 wherein said electrical conduction means comprises:
a) a one-way flow diode connected therein.
a) a one-way flow diode connected therein.
4. The headgear of claim 1 wherein said liquid heat transfer means comprises:
a) a flexible bladder fillable with a heat transfer liquid and connected to said heat pump means for bladder contact with a wearer's head and with said heat pump.
a) a flexible bladder fillable with a heat transfer liquid and connected to said heat pump means for bladder contact with a wearer's head and with said heat pump.
5. The headgear of claim 1 wherein said cavity is through the top of said shell, wherein said thermo-electric heat pump means is mounted in said cavity flush with the top of said shell, and wherein said thermal radiation means closes said cavity at the top of said shell.
6. The headgear of claim 1 wherein said headgear is for wear when riding a motorcycle, and wherein said insulated electrical conduction means is connectable to a motorcycle direct current electrical power source.
7. The headgear of claim 4 wherein said flexible bladder is mountable below said heat pump means.
8. The headgear of claim 1 wherein said thermo-electric heat pump means is mounted in said cavity in such a manner that said heat pump means does not significantly protrude into the head-accommodating space defined by said hard shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000439419A CA1200651A (en) | 1983-10-20 | 1983-10-20 | Thermo-electric cooled headgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000439419A CA1200651A (en) | 1983-10-20 | 1983-10-20 | Thermo-electric cooled headgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1200651A true CA1200651A (en) | 1986-02-18 |
Family
ID=4126337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000439419A Expired CA1200651A (en) | 1983-10-20 | 1983-10-20 | Thermo-electric cooled headgear |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1200651A (en) |
-
1983
- 1983-10-20 CA CA000439419A patent/CA1200651A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |