1. A light-emitting device comprising:
a light-emitting element, and
a substrate where the light-emitting element is arranged, wherein
a metal cover including a housing part for housing the light-emitting element and a through hole for transmitting light emitted from the light-emitting element, is provided on the substrate.
2. The light-emitting device according to claim 1, further comprising:
a reflecting member for reflecting light emitted from the light-emitting element, provided on the face of the metal cover surrounding the light-emitting element.
3. A method for manufacturing a light-emitting device including a light-emitting element, a substrate where the light-emitting element is arranged and a metal frame including a housing part for housing the light-emitting element, the housing part provided on the substrate and having a shape that is tapered upward from the substrate,
the method comprising:
a metal plate preparation step of preparing a metal plate including a plurality of metal frame forming areas where the metal frame is formed, and
a housing part forming step of forming, by way of press working, the housing part on the metal plate corresponding to the metal frame forming areas.
4. The method for manufacturing a light-emitting device according to claim 3, further comprising:
a metal plate cutting step of cutting the metal plate along the external shape positions of the metal frame forming areas by way of press working after the housing part forming step.
5. The method for manufacturing a light-emitting device according to claim 4, further comprising:
a reflecting member forming step of forming a reflecting member for reflecting light emitted from the light-emitting element on the face of the housing part surrounding the light-emitting element between the housing part forming step and the metal plate cutting step.
6. A method for manufacturing a light-emitting device including a light-emitting element, a substrate where the light-emitting element is arranged and a metal frame including a housing part for housing the light-emitting element, the housing part having a shape that is tapered upward from the substrate, the substrate including a metal frame inserting part where at least part of the metal frame is inserted,
the method comprising:
a metal plate preparation step of preparing a metal plate including a plurality of metal frame forming areas where the metal frame is formed,
a housing part forming step of forming, by way of press working, the housing part on the metal plate corresponding to the metal frame forming areas, and
a cutting part forming step of forming on the metal plate a cutting part to allow the external shape of the metal frame to be deformable.
7. A method for manufacturing a light-emitting device including a light-emitting element, a substrate where the light-emitting element is arranged, a housing part arranged on the substrate for housing the light-emitting element and a metal cover including through holes for transmitting light emitted from the light-emitting element, wherein
the method comprising:
a metal plate preparation step of preparing a metal plate including a plurality of metal cover forming areas where the metal cover is formed,
a housing part forming step of forming, by way of press working, the housing part on the metal plate corresponding to the metal cover forming areas, and
a through hole forming step of forming, by way of press working, the through holes in the metal plate corresponding to a position where the housing part is formed.
8. The method for manufacturing a light-emitting device according to claim 6, further comprising:
a metal plate cutting step of cutting the metal plate along the external shape positions of the metal frame forming areas by way of press working after the housing part forming step.
9. The method for manufacturing a light-emitting device according to claim 7, further comprising:
a metal plate cutting step of cutting the metal plate along the external shape positions of the metal cover forming areas by way of press working after the housing part forming step.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1) A process for preparing tropenol (I):
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optionally in the form of an acid addition salt thereof, said process comprising: reacting a compound of formula (II)
19
wherein
R denotes a group selected from C1-C4-alkyl, C2-C6-alkenyl and C1-C4-alkylene-phenyl, each of which may be substituted by hydroxy or C1-C4-alkoxy,
optionally in the form of an acid addition salt thereof or a hydrate thereof, in a suitable solvent with a formamide-acetal of formula (III)
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wherein
R denotes C1-C4-alkyl and R denotes a group selected from C1-C4-alkyl and C1-C4-alkylene-phenyl, to obtain a compound of formula IV
21
wherein R and R are as defined above;
decarboxylating the compound of formula (IV) to obtain an ester of formula (V)
22
wherein R is as defined above; and saponifying the compound of formula (V) to obtain the compound of formula (I), which is optionally converted into an acid addition salt thereof by reaction with a suitable acid.
2) A process according to claim 1, wherein in the compound of formula (II) R denotes C1-C4-alkyl or C2-C4-alkenyl, optionally in the form of an acid addition salt thereof or a hydrate thereof, and wherein in the formamide-acetal of formula (III) the groups R represent methyl or ethyl and the groups R represent methyl, ethyl or propyl.
3) A process according to claim 1, wherein in the compound of formula (II) R denotes 1-propenyl, 2-propenyl, 1-buten-1-yl, 1-buten-2-yl, 1-buten-3-yl, 1-buten-4-yl, 2-buten-1-yl or 2-buten-2-yl, optionally in the form of an acid addition salt thereof or a hydrate thereof, and wherein in the formamide-acetal of formula (III) the groups R and R represent methyl or ethyl.
4) A process according to claim 3, wherein in the compound of formula (II) R denotes 2-buten-2-yl.
5) A process according to claim 3, wherein in the compound of formula (III) R and R represent methyl.
6) A process according to claim 3, wherein in the compound of formula (II) R denotes 2-buten-2-yl and in the compound of formula (III) R and R represent methyl.