1. An LED (light emitting diode) lamp comprising:
two lamp modules stacked together, the two lamp modules each comprising:
a housing comprising a plate and an annular sidewall extending from a periphery of the plate; the sidewall defining a plurality of photic openings extending along a circumferential direction of the sidewall;
an LED module received in the housing; and
a cover engaging with one end of the sidewall and enveloping the LED module in the housing;
wherein the two plates of the two lamp modules abut against each other, the two sidewalls of the two lamp modules are located at two opposite sides of the two plates, the two covers are located at two opposite ends of the two sidewalls, and when the LED modules work, light emitting by the LED modules radiates out of the LED lamp via the photic openings and the covers.
2. The LED lamp of claim 1 further comprising a lampshade received in the housing of each lamp module, wherein the lampshade covers the photic openings of the housing.
3. The LED lamp of claim 1, wherein the cover of each lamp module defines a depression therein, and a plug is inserted in the depression of the cover.
4. The LED lamp of claim 3, wherein the plug comprises a base and an annular wall extending from the base towards the LED module, the base and the annular wall being received in the depression.
5. The LED lamp of claim 4, wherein the plug further comprises a sleeve extending from the base towards the LED module, the sleeve being surrounded by the annular wall and having a height more than that of the annular wall.
6. The LED lamp of claim 5, wherein the depression defines a through hole in a bottom thereof, the depression forming an annulus surrounding and adjacent to the through hole.
7. The LED lamp of claim 6, wherein the annular wall of the plug abuts against the annulus, and the sleeve extends through the through hole.
8. The LED lamp of claim 2, wherein the lampshade is transparent.
9. The LED lamp of claim 1, wherein the two lamp modules are oriented towards an upward direction and a downward direction, respectively.
10. The LED lamp of claim 3, wherein a chassis is connected to the plug of one lamp module through a pole.
11. The LED lamp of claim 3, wherein the two lamps are connected by fixing the two plugs through a pole.
12. An LED (light emitting diode) lamp comprising:
a housing comprising a plate and an annular sidewall extending from a periphery of the plate; the sidewall defining a plurality of photic openings extending along a circumferential direction of the sidewall;
an LED module received in the housing; and
a cover engaging with one end of the sidewall and enveloping the LED module in the housing;
wherein when the LED module works, light emitting by the LED module radiates out of the LED lamp via the photic openings and the cover.
13. The LED lamp of claim 12, wherein the cover defines a depression therein, the plug being received in the depression.
14. The LED lamp of claim 13, wherein the cover defines a through hole in a bottom of the depression, a circumferential part of the bottom of the depression surrounding and adjacent to the through hole forming an annulus.
15. The LED lamp of claim 14, wherein the plug comprises a base, a sleeve and an annular wall extending from the base towards the LED module, the sleeve extending through the through hole and the annular wall abutting against the annulus.
16. The LED lamp of claim 15, wherein the sleeve is surrounded by the annular wall and has a height larger than that of the annular wall.
17. The LED lamp of claim 1 further comprising a lampshade received in the housing and enclosing the LED module, and the lampshade overlays the photic openings.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A film support and feed system of a camera, comprising:
a pressure plate positioned immediately behind a frame of roll-film which is to be exposed at a shutter release;
a film feed mechanism which moves said film frame in a space in front of said pressure plate;
a film suction mechanism which brings said film frame into intimate contact with said pressure plate by vacuum aspiration;
a reversible motor; and
an associating mechanism which selectively associates said reversible motor with one of said film feed mechanism and said film suction mechanism in accordance with a direction of rotation of said reversible motor,
wherein said reversible motor is associated with said film feed mechanism by said associating mechanism to operate said film feed mechanism when said reversible motor is driven to rotate in a forward direction, and
wherein said reversible motor is associated with said film suction mechanism by said association mechanism to operate said film suction mechanism when said reversible motor is driven to rotate in a reverse direction.
2. The film support and feed system according to claim 1, further comprising a controller which controls said reversible motor to continue rotating in said reverse direction to thereby keep said film frame into intimate contact with said pressure plate by vacuum aspiration by said film suction mechanism during an exposure of said film frame.
3. The film support and feed system according to claim 1, wherein said associating mechanism comprises a planet gear which is engaged with a gear of one of said film feed mechanism and said film suction mechanism when said reversible motor is driven to rotate in a corresponding one of said forward direction and said reverse direction, respectively.
4. The film support and feed system according to claim 1, wherein said camera comprises a camera body and a film back which is detachably attached to said camera body, wherein at least said pressure plate, said film feed mechanism and said film suction mechanism are incorporated in said film back.
5. The film support and feed system according to claim 1, wherein a film winding operation in which said roll-film is wound on a take-up spool of said camera is performed when said reversible motor is driven to rotate in said forward direction.
6. The film support and feed system according to claim 1, wherein said film suction mechanism comprises:
a plurality of through holes formed on pressure plate; and
a suction pump having a rotor, wherein said suction pump is associated with said reversible motor to rotate said rotor when said reversible motor is driven to rotate in said reverse direction.
7. The film support and feed system according to claim 4, wherein said space, in which said film frame is moved by said film feed mechanism, is positioned behind an aperture formed on said camera body which forms the limits of each film frame exposed of said roll-film.
8. The film support and feed system according to claim 1, wherein said associating mechanism comprises a planetary gear which includes of a sun gear and a planet gear which is engaged with and rotates around said sun gear.
9. A camera system having a camera body and a film back which is detachably attached to said camera body, said camera body comprising a reversible motor, wherein roll-film is accommodated in said film back, said film back comprising:
a pressure plate positioned immediately behind a film frame of said roll-film which is to be exposed at a shutter release;
a film feed mechanism which feeds said film frame;
a film suction mechanism which brings said film frame into intimate contact with said pressure plate by vacuum aspiration; and
an associating mechanism which selectively associates said reversible motor with one of said film feed mechanism and said film suction mechanism in accordance with a direction of rotation of said reversible motor,
wherein said reversible motor is associated with said film feed mechanism by said associating mechanism to operate said film feed mechanism when said reversible motor is driven to rotate in a forward direction, and
wherein said reversible motor is associated with said film suction mechanism by said association mechanism to operate said film suction mechanism when said reversible motor is driven to rotate in a reverse direction.
10. A film support and feed system of a camera, comprising:
a film feed mechanism which moves a-roll film in a space in front of a pressure plate;
a film suction mechanism which brings said film into intimate contact with said pressure plate by vacuum aspiration;
a reversible motor; and
an associating mechanism which selectively associates said reversible motor with one of said film feed mechanism and said film suction mechanism in accordance with a corresponding one of a forward rotation and reverse rotation of said reversible motor.