JP2005285362A - Downlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a downlight, hermeticity of which is ensured, and easiness of inserting a lamp into which is improved. <P>SOLUTION: A downlight 1 has: a reflection plate 3 as a reflection body which makes the bottom open and has a reflection surface 9 on the inside periphery surface; and a socket part 4 which is placed outside the reflection plate 3 and to which a cap part 17 formed on one end side of a base part 10 of a lamp 6 is fitted; in a fixture body 2. Furthermore, the downlight 1 has: a hole part 3a which opens to the reflection plate 3 and makes the lamp 6 go into the inside of the reflection plate 3; and a socket packing 5 having a housing part 5b which houses the socket part 4 close with a cylinder part 5a at the one side and houses the base part 10 of the lamp 6 at the other side; where the inner shape of the housing part 5b of the socket packing 5 is formed into a similar figure to the outer shape of the base part 10, and an opening brim 5c of the housing part 5b sticks to the periphery of the hole part 3a of the reflection plate 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting fixture, and more particularly to a downlight that is embedded in a ceiling.

  As a conventional downlight, when a socket part, which is a lamp socket, is attached to a socket insertion hole provided in a reflector, a rubber soundproof packing is attached to the outer peripheral surface of the socket part (patent) Reference 1).

  Further, a downlight 101 as shown in FIG. 3 has a lower surface opened and a reflecting plate 102 which is a reflector having a reflecting surface on the inner peripheral surface, and is disposed outside the reflecting plate 102 and has a lamp (not shown). ) Includes a socket portion 103 to which a base portion provided on one end side of the base portion is mounted, and a hole portion 106 that opens to the reflecting plate 102 and allows the lamp mounted on the socket portion 103 to face the reflecting plate 102. ing.

  The reflection plate 102 has a bell shape with an opening on the lower surface and a reflection surface on the inner peripheral surface. The reflection plate 102 includes a flange 107 on the outer peripheral edge of the opened lower surface, and is attached to the socket portion 103 on the side periphery. A hole 106 is opened to allow the lamp to face the reflecting plate 102. Further, a fixture 108 for attaching the downlight 101 to the ceiling is provided on the side peripheral portion of the reflecting plate 102, and the downlight 101 is embedded and installed in the ceiling by the fixture 108.

The socket 103 is connected to the lamp mechanically and electrically by mounting the lamp cap. The socket 103 is mechanically and electrically connected to the terminal block 105 having a terminal to which a wire from a power source is connected. Are connected to each other and disposed outside the reflector 102 by the instrument body 104.
Japanese Utility Model Publication No. 6-64319 (FIG. 1)

  In the former, the socket part is arranged in the socket insertion hole of the reflector plate so that the reflector plate and the socket part are in contact with each other. At this time, the rubber soundproof packing is attached to the socket part. Thus, the gap between the reflecting plate and the socket portion is filled by packing to obtain a soundproofing effect and an airtight effect.

  However, the former downlight is not suitable for using a large lamp with respect to the aperture diameter of the reflector, and uses a large lamp, for example, a bulb-type fluorescent lamp, with respect to the reflector having a narrow aperture diameter. For this purpose, it is necessary to use the latter downlight 101 described above. However, in the latter downlight 101, since the socket portion 103 is disposed outside the reflector 102, the airtight effect cannot be obtained even if the soundproof packing as in the former is used, and the airtightness is poor. There was a problem.

  Furthermore, when the socket part 103 is arranged outside the reflector 102 in this way, the position of the socket part 103 is difficult to understand because the back of the ceiling is dark when the lamp is attached to the downlight 101. There was a problem that the nature was very bad.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a downlight that can ensure airtightness and has improved lamp mountability.

  In order to solve the above-mentioned problem, in the invention of claim 1, a reflector having a lower surface opened and having a reflective surface on an inner peripheral surface, and disposed on the outside of the reflector, one end side of the base portion of the lamp A socket portion to which a base portion provided on the socket is mounted, a hole opening in the reflector, and allowing the lamp mounted on the socket portion to face the reflector, and the socket portion on one end side. A socket packing having a housing portion for housing the base portion of the lamp on the other end side, and the housing portion of the socket packing has an inner shape thereof as an outer shape of the base portion. The downlight is characterized in that it is formed in a similar shape and the opening edge of the storage part is in close contact with the peripheral edge of the hole of the reflector.

  According to the first aspect of the present invention, since the space between the hole portion of the reflector and the socket portion is sealed by the socket packing, the airflow does not flow out of the hole portion of the reflector. Thereby, the airtightness of a downlight is securable. Further, when the lamp is mounted, the socket packing serves as a guide for guiding the lamp to the socket portion, so that the lamp can be easily mounted on the socket portion. Thereby, the mountability of the lamp can be improved.

  According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the hole portion is provided in a side peripheral portion of the reflector, and the socket portion is substantially arranged with respect to a lower surface of the reflector. The downlight is characterized by facing the parallel direction and facing the hole.

  According to invention of Claim 2, the downlight with which the lamp | ramp is mounted | worn with it located in the substantially parallel to a ceiling surface can be obtained.

  Since the present invention includes a socket packing that seals between the socket portion and the hole of the reflector, the airflow does not flow out of the hole of the reflector, thereby reducing the airtightness of the downlight. Further, since the socket packing serves as a guide for guiding the lamp to the socket part, the lamp can be easily attached to the socket part, and the mounting ability of the lamp can be improved. effective.

  As shown in FIGS. 1A and 1B, the downlight 1 of the present invention includes a reflecting plate 3 that is a reflector having a lower surface opened and a reflecting surface 9 on an inner peripheral surface, The fixture body 2 is provided with a socket portion 4 that is disposed outside and is provided with a base portion 17 provided on one end side of the base portion 10 of the lamp 6, and opens to the reflector 3 and is attached to the socket portion 4. A socket part 4 is closely attached to the interior of the hole 3a for allowing the lamp 6 to face the reflector 3 and a cylindrical part 5a on one end side, and a storage part 5b for installing the base part 10 of the lamp 6 on the other end side. The socket packing 5 has a storage portion 5b having an inner shape similar to the outer shape of the base portion 10, and an opening edge 5c of the storage portion 5b is formed on the reflecting plate 3. It is configured to be in close contact with the peripheral edge of the hole 3a.

  By the way, the lamp 6 used in the downlight 1 of the present invention is, for example, a 12 W bulb-type fluorescent lamp. Such a lamp 6 has a base part 17 having the same shape as the E17-type base and a fluorescent light that becomes the light-emitting part 16. A circuit including a lamp and a cap portion 17 on one end side and a light emitting portion 16 protruding from the other end side, and connected to a power source via the cap portion 17 to supply light emission power to the light emitting portion 16 ( (Not shown) and a base portion 10 having a built-in structure. The wattage and the shape of the base are not limited to those described above.

  Below, the downlight 1 of this invention is demonstrated in detail.

  As shown in FIG. 1B, the instrument body 2 is formed in a gate shape from a galvanized steel plate having a thickness of 1.0 mm, for example, and has a substantially rectangular central portion 2a and a longitudinal direction of the central portion 2a. The plate-like first side portions 2b and 2b extending downward from both ends of the central portion 2a on one end side of the central portion 2a and the other end portion in the longitudinal direction of the central portion 2a extending downward. A plate-like socket holding portion 2c, and plate-like second side portions 2d and 2d extending downward from both ends in the short direction of the central portion 2a on the other end side in the longitudinal direction of the central portion 2a; It is composed of The central portion 2a has a hole 2e for attaching the reflector 3 on one end side in the longitudinal direction. When the reflector 3 and the socket part 4 are attached to the instrument main body 2, the socket holding part 2 c is directed so that the socket part 4 faces in a direction substantially parallel to the opened lower surface of the reflector 3. It is provided so as to be arranged at a position facing the hole 3a. Both the first side portions 2b, 2b have a locking piece (not shown) formed by bending an end portion in the longitudinal direction outward, and a T-shaped slit 11 along the longitudinal direction. ing. The slit 11 is provided with a fitting 12 made of a stainless steel plate (SUS) having a thickness of 0.5 mm so as to be slidable along the slit 11 and attached to the locking piece of the first side 2b. The bracket 12 constitutes attachment means for sandwiching and installing the downlight 1 in the ceiling by sandwiching the edge of the embedding hole 8a of the ceiling plate 8. Moreover, the edge part of both the 1st side parts 2b is adhering to the auxiliary | assistant frame 13 formed cyclically | annularly, for example with the steel plate of plate thickness 0.6mm.

  The reflecting plate 3 is formed in a bell shape with the lower surface opened using, for example, PBT (polybutylene terephthalate resin). When installed on 8a, a collar portion 3b that covers the peripheral edge of the embedding hole 8a is integrally formed. A hole 3a for allowing the lamp 6 attached to the socket part 4 to face the reflector 3 is opened in the side peripheral part of the reflector 3, and in addition, at the top of the reflector 3, An attachment hole 3 c for attaching the reflector 3 to the instrument body 2 is provided. A reflection surface 9 is provided on the inner peripheral surface of the reflection plate 3 to reflect light emitted from the light emitting portion 16 of the lamp 6 and guide it into the room.

  The socket part 4 is configured to include, for example, an E17-shaped terminal part 15 corresponding to the base part 17 on one end side of a socket main body 14 made of a cylindrical porcelain, and is connected to an electric wire from a power source, for example, fast connection. It is electrically connected to a terminal block 7 having a terminal 7a composed of terminals.

  The socket packing 5 is made of, for example, silicon rubber. As shown in FIGS. 2A and 2B, the socket packing 5 has a cylindrical portion 5a on one end side and a storage portion 5b on the other end side. The interior is connected and integrated. The cylindrical portion 5 a is formed so that its inner diameter is slightly smaller than the outer diameter of the socket body 14 in order to closely attach the socket body 14 to the interior. The storage portion 5b includes the base portion 10 of the lamp 6 and has an inner shape similar to the outer shape of the base portion 10 and reflects the opening edge 5c on the other end side of the storage portion 5b. The plate 3 is formed in a shape that is in close contact with the peripheral edge of the hole 3 a of the plate 3. According to such a socket packing 5, the elasticity of silicon rubber allows the socket packing 5 to firmly adhere to the socket portion 4 and the reflector plate 3 without a gap, so that the hole 3 a of the reflector plate 3 and the socket portion 4 The space is sealed and airtightness can be maintained.

  From these members, the downlight 1 is configured as follows. That is, as shown in FIG. 1A, the socket part 4 is installed in the socket holding part 2 c of the instrument body 2, and the terminal block 7 provided on one of the second side parts 2 d of the instrument body 2. By being electrically connected, it is electrically connected to the power source. The socket packing 5 is attached to the socket part 4 with the socket part 4 closely attached inside the cylindrical part 5a. After this, the reflector 3 is arranged on the instrument body 2 such that the auxiliary frame 13 is positioned immediately above the collar 3b and the mounting hole 3c of the reflector 3 and the hole 2e of the instrument body 2 are in communication. The bolt 19 is inserted into the connecting mounting hole 3 c and the hole 2 e that are communicated with each other, and the bolt 19 is fixed with the nut 20.

  As shown in FIGS. 1 (a) and 1 (b), such a downlight 1 is provided in the mounting hole 8a provided in the indoor ceiling plate 8 such as φ100 ± 2 mm. The lamp 6 is mounted from the inside of the reflector 3 through the hole 3a and the socket packing 5 to the socket portion 4 and is actually used.

  According to the downlight 1 of the present invention, the cylindrical portion 5 a on one end side is in close contact with the socket portion 4, and the opening edge portion 5 c of the storage portion 5 b on the other end side is in close contact with the peripheral edge portion of the hole portion 3 a of the reflector 3. Since the socket packing 5 is provided and the space between the reflecting plate 3 and the socket portion 4 is sealed by the socket packing 5, the airflow does not flow out from the hole 3a of the reflecting plate 3, thereby reducing the downsizing. The airtightness of the light 1 can be ensured. Furthermore, since the inner shape of the storage portion 5b of the socket packing 5 is formed to be similar to the outer shape of the base portion 10, the socket packing 5 serves as a guide for guiding the lamp 6 to the socket portion 4. Therefore, the lamp 6 can be easily mounted on the socket portion 4, thereby improving the mountability of the lamp 6.

(A) is sectional drawing of the downlight of this invention, (b) is a perspective view of a downlight same as the above. (A) is a perspective view of the socket packing of the downlight of this invention, (b) is a perspective view from the other of the socket packing same as the above. It is a perspective view of the conventional downlight.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Downlight 2 Apparatus body 2a Center part 2b 1st side part 2c Socket holding part 2d 2nd side part 2e Hole part 3 Reflector 3a Hole part 3b Brim part 4 Socket part 5 Socket packing 5a Cylindrical part 5b Storage part 5c Opening edge portion 6 Lamp 7 Terminal block 7a Terminal 8 Ceiling plate 8a Embedding hole 9 Reflecting surface 10 Base portion 11 Slit 12 Mounting bracket 13 Auxiliary frame 14 Socket body 15 Terminal portion 16 Light emitting portion 17 Base portion

Claims (2)

  The lower surface has an opening, a reflector having a reflection surface on the inner peripheral surface, and a socket portion that is disposed outside the reflector and is fitted with a base portion provided on one end side of the base portion of the lamp, and A hole that opens in the reflector and allows the lamp mounted in the socket portion to face the reflector, and the socket portion is closely attached to one end side, and the base of the lamp is provided on the other end side. A socket packing having a storage portion for interiorizing the portion, and the storage portion of the socket packing is formed so that its inner shape is similar to the outer shape of the base portion, and the opening edge of the storage portion is The downlight is in close contact with the peripheral edge of the hole of the reflector.   The hole portion is provided in a side peripheral portion of the reflector, and the socket portion faces the hole portion in a direction substantially parallel to the opened lower surface of the reflector. The downlight according to claim 1.

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