JP4561700B2 - lighting equipment - Google Patents

Description

  The present invention relates to an embedded luminaire provided with a light irradiation direction changing mechanism for adjusting a lamp having a reflecting mirror that reflects light from a light source in both an elevation angle direction and a rotation direction.

  In general, in an embedded luminaire equipped with a light source such as a halogen lamp or a compact straight tube high-intensity discharge lamp, a lamp having a reflecting mirror is desired in order to adjust the irradiation direction of light from the light source. Is provided with a light irradiation direction adjustment mechanism that adjusts so as to be positioned in the elevation angle direction and the rotation direction (see, for example, Patent Document 1).

  That is, the conventional light irradiation direction changing mechanism of a lighting fixture is configured to rotatably mount a substantially cylindrical rotating member concentrically with the mounting frame on a substantially cylindrical mounting frame fixed to a wall such as a ceiling. The swing member is swingably supported by the rotating member, and a lamp having a reflecting mirror is attached to the swing member.

Then, the position of the lamp in the elevation direction is changed by swinging the lamp via the swing member, and the position of the lamp in the rotation direction is changed by rotating the lamp via the rotating member. Moreover, in this case, the inner peripheral surface of the mounting frame fixed to the ceiling and the inner peripheral surface of the rotating member that is rotatably mounted on the mounting frame do not impair the light irradiation efficiency, and also impair the beauty. Therefore, it is formed to be substantially flush.
Japanese Utility Model Publication No. 6-36124

  By the way, when this type of embedded luminaire is installed in a facility space such as a store, it is common to place a plurality of luminaires on the same power supply circuit. It is difficult to adjust all the irradiation directions within a short time when the lamp does not reach a high temperature state due to the heat generated by the light source. For this reason, the actual situation is that the irradiation direction must be adjusted or changed by wearing gloves or the like in a state in which the lamp is relatively hot after lighting.

  Here, when changing the position of the lamp in the elevation angle direction, since the lamp swings by pushing one piece of the lamp, the lamp can be adjusted relatively easily. Therefore, the lamp can be adjusted using a normal tool such as a screwdriver. Adjustments can be made without touching the hand directly.

  On the other hand, when changing the position in the rotation direction of the lamp, as described above, the inner peripheral surface of the mounting frame and the inner peripheral surface of the rotating member may be formed substantially flush with each other. Therefore, there is no portion where the hand is caught. Therefore, conventionally, for example, it has been necessary to rotate the rotating member by pressing the hand against the inner peripheral surface of the lamp. Thus, when rotating a hand by pressing it against the lamp, the lamp is hot and the place where the hand is pressed is near the center of rotation. A large torque is required, resulting in poor operability, and extra time is required to change the position of the lamp in the rotational direction.

  In addition, even when the lamp is oriented almost directly below, there is no gripping margin for the front part of the lamp when it is oriented almost directly below, so once the lamp is changed to the lifting direction, it is easier to press the hand. Above, it is necessary to rotate the lamp together with the rotating member, which is similarly troublesome.

  The present invention has been made in view of the above-described background art, and in order to adjust the irradiation direction of light from a light source, not only the position of the lamp in the elevation angle direction but also the position in the rotation direction is easily changed. It is an object of the present invention to provide a lighting fixture that can be used.

  In order to solve the above-mentioned problem, the lighting apparatus according to the first aspect of the present invention is a lamp having a reflecting mirror that reflects light from a light source on a substantially cylindrical mounting frame fixed to a wall such as a ceiling. The light irradiation direction changing mechanism is supported by the light irradiation direction changing mechanism so as to be swingable and rotatable. The light irradiation direction changing mechanism is mounted on the mounting frame so as to be rotatable concentrically with the mounting frame. A rotating member is provided, and the inner peripheral surface of the mounting frame and the inner peripheral surface of the rotating member are substantially flush with each other, and the rotating member is rotated around the inner peripheral surface in the vicinity of the bottom surface in contact with the mounting frame. A moving projection is formed.

  According to a second aspect of the present invention, there is provided the lighting fixture according to the first aspect of the invention, wherein the mounting frame is engaged with the rotation protrusion on the inner peripheral surface in contact with the bottom surface of the rotating member. The rotation restricting protrusion is formed.

  According to the invention described in claim 1, the inner peripheral surface of the mounting frame fixed to a wall body such as a ceiling, and the inner peripheral surface of the rotating member that is rotatably mounted on the mounting frame, Although the rotation member is formed with a protrusion for rotation on the inner peripheral surface near the bottom surface in contact with the mounting frame, even if the lamp is already in a high temperature state in the lighting state. The rotating member can be easily rotated by hooking the rotating projection on the tool without directly touching the lamp. In this case, since the rotation protrusion is at a position sufficiently away from the rotation center, it is possible to minimize the operation torque necessary for rotation, and it is possible to easily realize good operability. . Moreover, since the inner peripheral surface of the rotating member and the mounting frame is substantially the same except for the protrusion forming portion, the light irradiation efficiency is not impaired, and the aesthetic appearance is not impaired, so that the design is also good. Can maintain a good condition.

  According to the second aspect of the present invention, the mounting frame is formed with the rotation restricting protrusion that engages with the rotating protrusion on the inner peripheral surface in contact with the bottom surface of the rotating member. By engaging the protrusion for rotation with the protrusion for restricting rotation provided on the mounting frame, it is restricted that the lamp is rotated more than necessary together with the rotating member. Therefore, it is possible to prevent the occurrence of problems such as the lead wire connected to the socket of the lamp being excessively twisted and broken or the insulator is broken.

  1 is a perspective view showing the overall configuration of a lighting fixture according to an embodiment of the present invention, FIG. 2 is a front view of a half of the lighting fixture, and FIG. 3 is an exploded perspective view of the lighting fixture, FIG. FIG. 3 is a perspective view of the same lighting device viewed from the bottom side.

  The luminaire 1 of this embodiment includes a high-intensity discharge lamp 2 serving as a light source, a lamp 3 that houses the high-intensity discharge lamp 2 and irradiates the light of the high-intensity discharge lamp 2 to the outside, and the lamp 3 The light irradiation direction changing mechanism 4 that adjusts both in the elevation angle direction and the rotation direction, and the mounting frame 5 that supports the light irradiation direction changing mechanism 4 and is fixed to a wall body such as a ceiling are mainly configured.

  The lamp 3 includes a reflecting mirror 8, a shade 9, a socket base 10, and a socket 11.

  The reflecting mirror 8 is an aluminum plate formed in a substantially parabolic shape by spatula drawing or the like, and an insertion hole 8a for the high-intensity discharge lamp 2 is formed at the top. And this reflecting mirror 8 is accommodated in the shade 9 and the rocking | fluctuation frame mentioned later. In this case, when the high-intensity discharge lamp 2 is mounted on the socket 11, the center of the insertion hole 8 a of the reflecting mirror 8 is configured to coincide with the optical axis of the high-intensity discharge lamp 2. Further, the reflecting surface formed on the inner surface of the reflecting mirror 8 is configured as a collection of small curved surfaces for reflection in an arbitrary direction, and the surface thereof is chemically polished anodized, aluminum evaporated, silver evaporated, optical multilayer film processing The surface is given.

  The shade 9 is made of, for example, aluminum die casting, has a substantially truncated cone shape that accommodates the reflecting mirror 8, and a bottom portion thereof is fitted to a rotating member 14 described later. A through hole larger than the insertion hole of the reflecting mirror 8 is formed on the upper surface of the shade 9. The socket base 10 is made of, for example, a steel plate, and accommodates the socket 11 and is fixed to the upper surface of the shade 9 concentrically with the high-intensity discharge lamp 2. Further, the socket 11 has an E-shaped receiving metal, and the outer shell is made of porcelain.

  The light irradiation direction changing mechanism 4 includes a substantially cylindrical rotating member 14 mounted on the mounting frame 5 so as to be rotatable concentrically with the mounting frame 5, and a bolt and a nut inside the rotating member 14. And a swing frame 15 as a swing member attached to be movable.

  The rotating member 14 is made of a heat-resistant component such as an aluminum die cast having high heat dissipation and thermal conductivity, and is rotatably mounted on a step portion 5a formed on the inner peripheral surface of the mounting frame 5. At the same time, the fixing frame 16 provided on the mounting frame 5 prevents it from coming off. In this case, in a state where the rotating member 14 is placed on the step portion 5a on the inner peripheral surface of the mounting frame 5, the inner peripheral surface of the rotating member 14 and the inner peripheral surface of the mounting frame 5 are configured to be substantially flush with each other. Has been. Further, the rotating member 14 is formed with a pair of turning projections 14 a that protrude somewhat downward from the bottom surface of the mounting frame 5 at positions opposite to the inner peripheral surface in the vicinity of the bottom surface in contact with the mounting frame 5. .

  On the other hand, the swing frame 15 is formed with a hanging step portion of the reflecting mirror 8 and has a rotary shaft hole that can be moved upside down on the side surface. The shade 9 is integrally attached to the swing frame 15. Accordingly, the entire lamp 3 is supported by the light irradiation direction changing mechanism 4 so as to be swingable and rotatable.

  The mounting frame 5 is made of a heat-resistant component such as an aluminum die casting having high heat dissipation and thermal conductivity. The step 5a on which the rotating member 14 is placed on the inner peripheral surface of the mounting frame 5 as described above. On the other hand, fixing brackets 16 are fixed with screws at three locations along the circumferential direction of the outer peripheral surface thereof. A mounting spring 17 is inserted into the fixing bracket 16. The attachment spring 17 is formed by forming a thin stainless steel plate at approximately V, and is positioned between the attachment frame 5 and a ceiling material (not shown), and fixes the lighting fixture 1 by elasticity.

  Further, a rotation restricting protrusion 5 b that engages with the rotation protrusion 14 a of the rotating member 14 is formed on the inner peripheral surface in the vicinity of the step portion 5 a of the mounting frame 5.

  As described above, according to the lighting apparatus of this embodiment, the inner peripheral surface of the mounting frame 5 and the inner peripheral surface of the rotating member 14 are configured to be substantially flush with each other, but are provided on the rotating member 14. Since the position of the lamp 3 in the rotation direction is changed by rotating the rotation protrusion 14a, the light irradiation direction can be easily adjusted.

  In this case, since the rotation protrusion 14a is positioned below the lamp 3 that is hot when lit, the rotation protrusion 14a does not directly touch the lamp 3 even when the lamp 3 is in a high temperature state. The rotating member 14 can be easily rotated by hooking it on the hand or tool. Moreover, since the rotation protrusion 14a is located at a position sufficiently away from the rotation center of the rotation member 14, the operation torque required for rotation can be minimized, and good operability can be easily realized. be able to.

  In addition, since the swing frame 15 is swingably provided with respect to the rotating member 14, and the lamp 3 is attached to the swing frame 15, even if the position of the lamp 3 in the elevation angle direction is changed, it can be rotated. Regardless of whether the rotation operability of the member 14 is good or not, it is possible to always obtain good operability.

  Moreover, since the inner peripheral surface of the rotating member 14 and the mounting frame 5 is substantially the same except for the positions where the protrusions 14a and 5b are formed, the light irradiation efficiency is impaired at the joint portion between the two members 14 and 5. In addition, a good state can be maintained in terms of design.

  Further, the rotation protrusion 14 a of the rotation member 14 is engaged with the rotation restriction protrusion 5 b provided on the mounting frame 5, so that the lamp 3 is restricted from being rotated more than necessary together with the rotation member 14. . For this reason, it is possible to prevent the occurrence of problems such as the lead wire (not shown) connected to the socket 11 of the lamp 3 being twisted excessively to break or break the insulator.

It is a perspective view which shows the whole structure of the lighting fixture in embodiment of this invention. It is the front view which looked at the half of the lighting fixture in cross section. It is a disassembled perspective view of the lighting fixture. It is the perspective view which looked at the same lighting fixture from the bottom side.

Explanation of symbols

1 Lighting equipment 2 Light source (high-intensity discharge lamp)
DESCRIPTION OF SYMBOLS 3 Lamp 4 Light irradiation direction change mechanism 5 Mounting frame 5b Protrusion for rotation control 8 Reflecting mirror 14 Rotating member 14a Protrusion 15 for rotation

Claims (2)

  A lamp having a reflecting mirror that reflects light from a light source is supported on a substantially cylindrical mounting frame fixed to a wall such as a ceiling so as to be swingable and rotatable by a light irradiation direction changing mechanism. The light irradiation direction changing mechanism includes a substantially cylindrical rotating member placed on the mounting frame so as to be rotatable concentrically with the mounting frame, and an inner peripheral surface of the mounting frame and an inner periphery of the rotating member. The lighting apparatus is configured to be substantially flush with a surface, and the rotating member has a rotation protrusion formed on an inner peripheral surface near a bottom surface in contact with the mounting frame.   The lighting fixture according to claim 1, wherein a rotation restricting protrusion that engages with the rotation protrusion is formed on an inner peripheral surface in contact with the bottom surface of the rotating member.

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