Headlamp assembly
A medical headlamp assembly, including a headlamp subassembly and a headstrap subassembly, that has a headstrap having an interior surface that touches the user's head when the headstrap is being worn. Battery holders are supported by the headstrap away from the headstrap interior surface, so that batteries held by the battery holders have no interior surface that is closer than 2 mm away from the headstrap interior surface, and thereby, away from the user's head. Also, battery contacts are positioned to be contacted by batteries held in the battery holders. Finally, an electrical network is electrically connected to the battery contacts and a headlamp subassembly connector, physically connected to the headlamp subassembly and electrically connects the headlamp subassembly to the electrical network.
1. A medical headlamp assembly for being worn on a user's head in a preferred orientation, including:
a. a headlamp subassembly;
b. a headstrap subassembly, including:
i. a headstrap having an interior surface that touches said user's head when said headstrap is being worn;
ii. a pair of symmetrically-positioned battery holders located on opposite sides of said user's head, when said assembly is worn in said preferred orientation and supported by said headstrap away from said headstrap interior surface, so that batteries held by said battery holders have no interior surface that is closer than 2 mm away from said interior surface, and thereby, away from said user's head, when said headstrap is being worn;
iii. battery contacts, positioned to be contacted by batteries held in said battery holders;
iv. an electrical network, electrically connected to said battery contacts; and
v. a headlamp subassembly connector physically connected to said headlamp subassembly and electrically connecting said headlamp subassembly to said electrical network.
2. The medical headlamp assembly of claim 1 , wherein said battery holders define a semi-circular cylindrical volume for accepting said batteries.
3. The medical headlamp assembly of claim 1 , wherein said headstrap subassembly includes an injection molded piece including said headstrap and said battery holders.
4. The medical headlamp assembly of claim 1 , wherein said headstrap assembly includes an injection molded piece defining attachment features adapted to accept said battery holders, which are attached by engagement to said attachment features.
5. The medical headlamp assembly of claim 1 , wherein said electrical network includes a circuit board, located proximal to said headlamp subassembly connector and a flex circuit adhered to said headstrap and extending from said battery contacts to said circuit board.
6. The medical headlamp assembly of claim 1 , wherein said headstrap has an inner layer, which has said interior surface, and wherein each said battery holder is supported such that there is a gap between said battery holder and said inner layer.
7. The medical headlamp assembly of claim 6 , wherein said gap is an air gap.
8. The medical headlamp assembly of claim 6 , wherein said gap is filled with foam.
9. The medical headlamp assembly of claim 1 , further including batteries, having a lengthwise dimension and including contacts at one lengthwise end, placed in said battery holders and wherein said batteries extend lengthwise from said battery holders by more than 1 cm.
10. The medical headlamp assembly of claim 1 , further including batteries placed in said battery holders and wherein said batteries extend lengthwise from said battery holders by more than 4 cm.
11. The medical headlamp assembly of claim 1 , further including batteries placed in said battery holders and wherein said batteries extend lengthwise from said battery holders by more than 6 cm.
12. The medical headlamp assembly of claim 9 , wherein said batteries include contacts, which are urged into contact with said contacts of said battery holders, by complementary attractive magnetic material in said batteries and said battery holders.
13. The medical headlamp assembly of claim 12 , wherein each said battery is held in place in said battery holder, without any retaining element that would have to be undone for the battery to be removed.
14. The medical headlamp assembly of claim 9 , wherein said battery holders define a volume that is in a transverse shape adapted to accept the transverse shape of said battery, and wherein said contacts of each said battery and said contacts of each said battery holder will mate in any transverse orientation of said battery that will permit said battery to be placed into said battery holder.
15. The medical headlamp assembly of claim 14 , wherein said batteries are shaped as circular cylinders, and said battery holders include an arrangement of contacts, such that every rotational position of said battery, around its longitudinal axis, will result in a matching of contacts.