1. A side-view light emitting diode having a light emitting diode window opened to a side to emit light sideward, the light emitting diode comprising:
a pair of lead frames each acting as a terminal;
a light emitting diode chip attached to a portion of the lead frame and electrically connected thereto;
a package body housing the lead frames and having a concave formed around the light emitting chip, the concave acting as the light emitting diode window;
a high reflective metal layer formed integrally on a wall of the concave;
a transparent encapsulant filled in the concave to encapsulate the LED chip, while forming the light emitting diode window; and
an insulating layer formed on a predetermined area of the lead frames so that the lead frames are insulated from the high reflective metal layer.
2. The side-view light emitting diode according to claim 1, wherein the insulating layer is formed in a joint between the lead frames and the metal layer.
3. The side-view emitting diode according to claim 1, wherein the insulating layer comprises one selected from a group consisting of SiO2, SiN and Al2O3 and mixtures thereof.
4. The side-view emitting diode according to claim 3, wherein the insulating layer comprises a deposited coating.
5. The side-view emitting diode according to claim 1, wherein the high reflective metal layer comprises one selected from a group consisting of Ag, Al, Au, Cu, Pd, Pt, Rd and alloys thereof.
6. The side-view emitting diode according to claim 5, wherein the high reflective metal layer comprises a deposited coating.
7. The side-view emitting diode according to claim 1, further comprising an intermediate layer interposed between the high reflective metal layer and the wall.
8. The side-view emitting diode according to claim 7, wherein the intermediate layer comprises one selected from a group consisting of SiO2, SiN and Al2O3 and mixtures thereof.
9. The side-view emitting diode according to claim 8, wherein the intermediate layer comprises a deposited coating.
10. The side-view emitting diode according to claim 7, further comprising a passivation film formed on the high reflective metal layer.
11. The side-view emitting diode according to claim 1, further comprising a passivation film formed on the high reflective metal layer.
12. The side-view emitting diode according to claim 11, wherein the passivation film comprises a transparent insulator.
13. The side-view emitting diode according to claim 12, wherein the passivation film comprises one selected from a group consisting of SiO2, SiN and Al2O3 and mixtures thereof.
14. The side-view emitting diode according to claim 12, wherein the passivation film comprises a deposited coating.
15. The side-view emitting diode according to claim 1, wherein the package body comprises a transparent resin.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A stator core of an electric rotating machine, comprising:
a plurality of ring-shaped steel sheets obtained from a single steel plate wound in a cylindrical shape, each steel sheet comprising:
a plurality of teeth disposed along a circumferential direction of the core on an inner side of the steel sheet in a radial direction of the core;
a plurality of divided end portions disposed along the circumferential direction on an outer side of the steel sheet in the radial direction, a thickness of the divided end portions directed in an axial direction of the core being substantially equal to a thickness of the teeth and being substantially constant in the radial direction;
a plurality of slits alternately disposed with the divided end portions along the circumferential direction on the outer side; and
a boundary portion disposed between the group of teeth and the group of divided end portions, the boundary portion having a changing thickness decreased toward the outer side.
2. The stator core according to claim 1, wherein the slits of each steel sheet are arranged substantially at the same intervals as those of the teeth of the steel sheet.
3. The stator core according to claim 1, wherein the divided end portions of each steel sheet are placed in a first plane parallel to a second plane in which the teeth of the steel sheet are placed.
4. The stator core according to claim 1, wherein the slits of each steel sheet are arranged substantially at the same intervals of those of the teeth of the steel sheet, and centers of the slits in the circumferential direction are placed at the same positions as centers of the respective teeth.
5. The stator core according to claim 1, wherein the boundary portion of each steel sheet is inclined toward the axial direction.
6. The stator core according to claim 1, wherein each slit extending in the radial direction has a width along the circumferential direction such that the width is increased toward the outer side.
7. The stator core according to claim 1, wherein each steel sheet further comprises a plurality of depressions disposed on the respective divided end portions so as to be adjacent to the boundary portion, each depression facing a pair of shoulder surfaces of the corresponding divided end portion which face each other along the circumferential direction and are inclined with respect to the axial and radial directions, each depression being placed on a bottom surface of the corresponding divided end portion which faces toward the axial direction.
8. A method of manufacturing a stator core of an electric rotating machine, comprising the steps of:
forming a single steel plate with a plurality of teeth and a back portion substantially set at a constant thickness such that the teeth are placed along a longitudinal direction of the steel plate on a first side of the steel plate and such that the back portion is placed on a second side of the steel plate opposite to the first side;
winding the steel plate to form a plurality of ring-shaped steel sheets in a cylindrical shape such that the teeth are placed on an inner side of the steel sheets and such that the back portion is placed on an outer side of the steel sheets; and
performing ironing for the back portions of the steel sheets to manufacture a stator core,
wherein the step of forming the steel plate includes:
forming a plurality of slits placed along the longitudinal direction in the back portion to form a plurality of divided end portions alternately placed with the slits and to form a boundary portion disposed between the group of teeth and the group of divided end portions, and
the step of winding the steel plate includes:
thinning the boundary portion of the steel plate such that a thickness of the boundary portion in each steel sheet is decreased toward the outer side.
9. The method according to claim 8, wherein the step of winding the steel plate includes:
helically winding the steel plate.
10. The method according to claim 8, wherein the step of forming the steel plate includes:
inclining the boundary portion toward a thickness direction such that the boundary portion of each steel sheet is inclined toward an axial direction of the stator core.
11. The method according to claim 8, wherein the step of winding the steel plate includes:
placing the divided end portions of each steel sheet in a first plane parallel to a second plane in which the teeth of the steel sheet are placed.
12. The method according to claim 8, wherein the step of winding the steel plate includes:
widening a width of each of the slits of the steel sheets in a circumferential direction of the core such that the width of the slit is increased toward the outer side.
13. The method according to claim 8, wherein the step of forming the steel plate includes:
forming a plurality of depressions in the respective divided end portions so as to be adjacent to the boundary portion, each depression facing a pair of shoulder surfaces of the corresponding divided end portion which face each other along a circumferential direction of the core and are inclined with respect to the axial and radial directions, each depression being placed on a bottom surface of the corresponding divided end portion which faces toward an axial direction of the core.