JP6452372B2 - Storage member for lamp, lamp and lighting device - Google Patents

Description

  The present invention relates to a storage member for a lamp, a lamp, and an illumination device. The present invention relates to a structure for fixing, for example, an LED substrate of a light bulb shaped lamp to a resin casing.

  There is a light bulb shaped lamp using a configuration in which a holding member in which an LED module is arranged is fixed by a screw screwed into a heat radiating member (for example, see Patent Document 1).

  There is a light bulb shaped lamp using a structure in which a board is screwed to and fixed to a housing and a heat radiating portion so that the back surface of the substrate on which an LED is provided is in contact with the heat radiating portion (for example, see Patent Document 2). ).

JP 2012-221847 A JP 2014-38873 A

  In the configurations of Patent Documents 1 and 2, a metal heat dissipation portion into which a screw (screw) is screwed requires a volume corresponding to the size of the screw (screw), and the mass of the lamp increases. For this reason, there has been a problem that miniaturization and weight reduction of the lamp are hindered.

  An object of the present invention is to reduce the size and weight of a lamp, for example.

A storage member for a lamp according to one aspect of the present invention is:
A tubular body,
A boss formed on the side wall of the main body so that a hole for inserting a fastening member along the axial direction of the main body is formed, and a part protrudes from one end surface of the side wall of the main body.
A part of the one end surface of the side wall of the main body portion rises and has a raised portion connected to the protruding portion of the boss portion.

  According to the present invention, the lamp can be reduced in size and weight.

Sectional drawing which shows the state which installed the illuminating device which concerns on Embodiment 1 on the ceiling. FIG. 3 is a front view of the lamp according to the first embodiment. Sectional drawing of the part except the glove and base part of the lamp | ramp which concerns on Embodiment 1. FIG. FIG. 3 is an exploded cross-sectional view of a portion of the lamp according to Embodiment 1 excluding a globe and a base portion. The perspective view of the LED board and metal housing | casing of the lamp | ramp which concerns on Embodiment 1. FIG. FIG. 3 is a perspective view of an LED substrate of the lamp according to Embodiment 1. FIG. 3 is a perspective view of a metal casing of the lamp according to the first embodiment. The front view of the metal housing | casing of the lamp | ramp which concerns on Embodiment 1. FIG. FIG. 3 is a top view of the metal casing of the lamp according to the first embodiment. FIG. 2 is a cross-sectional view of the metal casing of the lamp according to the first embodiment, taken along line AA. FIG. 3 is a perspective view of a lamp glove according to the first embodiment. FIG. 3 is a perspective view of a resin casing of the lamp according to the first embodiment. The front view of the resin housing | casing of the lamp | ramp which concerns on Embodiment 1. FIG. The side view of the resin housing | casing of the lamp | ramp which concerns on Embodiment 1. FIG. FIG. 3 is a rear view of the resin casing of the lamp according to the first embodiment. FIG. 3 is a top view of a resin casing of the lamp according to the first embodiment. FIG. 3 is a cross-sectional view of the resin casing of the lamp according to the first embodiment, taken along the line CC. FIG. 3 is a DD cross-sectional view of a resin casing of the lamp according to the first embodiment. FIG. 3 is a perspective view of a lid portion of the lamp according to the first embodiment. FIG. 3 is a top view of the lid portion of the lamp according to the first embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or corresponds in each figure. In the description of the embodiments, the description of the same or corresponding parts will be omitted or simplified as appropriate. In the description of the embodiment, the arrangement, orientation, etc., such as “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, “back”, etc., are for convenience of explanation. It is only described as such, and does not limit the arrangement or orientation of devices, instruments, parts, and the like. About the structure of an apparatus, an instrument, components, etc., the material, a shape, a magnitude | size, etc. can be suitably changed within the scope of the present invention.

Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a state in which lighting device 800 according to the present embodiment is installed on ceiling 801.

  As shown in FIG. 1, the lighting device 800 includes a lighting fixture body 700, a lamp socket 600, and a lamp 500. The illumination device 800 is a downlight, for example.

  The lighting fixture body 700 is installed on the ceiling 801 and connected to a commercial power source. In addition, the place where the lighting fixture body 700 is installed is not limited to the ceiling 801, and may be an arbitrary place that illuminates the illumination target. The external power source to which the lighting fixture body 700 is connected is not limited to a commercial power source, and may be an arbitrary power source. A power source such as a secondary battery may be built in the lighting fixture body 700.

  The lamp socket 600 is attached to the lighting fixture body 700.

  The lamp 500 is detachably attached to the lamp socket 600 and is turned on when commercial power is supplied from the lighting fixture body 700.

  As described above, in the present embodiment, the lighting fixture body 700 supplies power input from the external power source to the lamp 500 via the lamp socket 600. Thereby, the lamp 500 is turned on.

  In the following, for convenience of explanation, the light irradiation direction side is the upper side (upper) and the opposite side is the lower side (lower), but the actual light irradiation direction is the gravitational direction and the horizontal direction (perpendicular to the gravitational direction) Or other direction (direction oblique to the direction of gravity). For example, in the state shown in FIG. 1, the actual light irradiation direction is the direction of gravity.

  FIG. 2 is a front view of lamp 500 according to the present embodiment.

  As shown in FIG. 2, the lamp 500 includes a globe 100, a metal housing 200, a resin housing 300, and a base 400. The lamp 500 is, for example, a light bulb-shaped LED lamp (lamp configured in a light bulb shape).

  The globe 100 is an example of a cover that covers the light source. The metal casing 200 is an example of a casing (heat radiating member) that houses a substrate on which a light source is mounted and at least a part of the resin casing 300. The resin casing 300 is an example of a casing (storage member) that stores a lighting device (not shown) that turns on a light source. Details of the globe 100, the metal casing 200, and the resin casing 300 will be described later.

  The base 400 is attached to the lower end of the resin casing 300. The base portion 400 is connected to the lamp socket 600 described above and is electrically connected to the lighting device housed in the resin casing 300 to supply power to the lighting device.

  FIG. 3 is a cross-sectional view of a portion of the lamp 500 excluding the globe 100 and the base portion 400. FIG. 4 is an exploded cross-sectional view of a portion of the lamp 500 excluding the globe 100 and the base portion 400.

  As shown in FIGS. 3 and 4, the lamp 500 includes an LED substrate 250, a substrate fastening screw 260, and a lid 350 in addition to the metal housing 200 and the resin housing 300 described above.

  When the lamp 500 is assembled, first, the lid portion 350 is attached to the resin casing 300. A part of the resin casing 300 is accommodated in the metal casing 200. The LED substrate 250 is placed on the metal housing 200 and fixed to the portion of the resin housing 300 accommodated in the metal housing 200 with a substrate fastening screw 260.

  FIG. 5 is a perspective view of the LED substrate 250 and the metal housing 200 of the lamp 500.

  As shown in FIG. 5, the LED substrate 250 is attached to the metal housing 200. The LED board 250 is fastened to the metal casing 200 by board fastening screws 260. However, as will be described later, the board fastening screw 260 is screwed into the resin casing 300 instead of the metal casing 200. In the present embodiment, the LED substrate 250 is not fixed to the metal housing 200 with screws (screws), but is fixed to the resin housing 300 with the substrate fastening screws 260, so that the lamp 500 can be reduced in size and weight. Can be planned.

  An LED 251 is mounted on the LED substrate 250 as a light source. The LED substrate 250 is an example of a substrate on which a light source is mounted, and may be replaced with a substrate on which a light source other than the LED 251 is mounted. As a light source other than the LED 251, for example, a laser diode or an organic EL can be used.

  FIG. 6 is a perspective view of the LED substrate 250 of the lamp 500.

  As shown in FIG. 6, the LED substrate 250 is a disk-shaped substrate. A substrate hole 252 through which a lead wire or the like passes is formed at the center of the circular plate surface (the mounting surface of the LED 251) of the LED substrate 250. Two through holes 253 are formed near the periphery of the circular plate surface of the LED substrate 250 so as to be aligned in the radial direction of the circular plate surface of the LED substrate 250 with the substrate hole 252 interposed therebetween. Twelve LEDs 251 are further mounted near the periphery of the LED substrate 250. Six LEDs 251 are arranged on both sides of a straight line (diameter) connecting the two through holes 253. The shape of the LED substrate 250, the arrangement, the number, and the like of the LEDs 251 can be changed as appropriate.

  FIG. 7 is a perspective view of the metal casing 200 of the lamp 500. FIG. 8 is a front view of the metal casing 200. FIG. 9 is a top view of the metal housing 200. FIG. 10 is a cross-sectional view of the metal housing 200 taken along the line AA.

  As shown in FIGS. 7 to 10, the metal housing 200 includes a light source mounting part 210, fins 230, and a main body part 240. The metal housing 200 is made of a metal having good thermal conductivity such as aluminum. However, it is not necessary to use a metal as long as it has a good thermal conductivity. The metal casing 200 is integrally formed by, for example, a die cutting method.

  The main body 240 has a truncated cone shape having a larger area on the upper surface side than on the lower surface side. The main body 240 is not limited to a truncated cone shape, and may be a cylindrical shape, an elliptical column shape, a prismatic shape, or the like.

  The light source attachment part 210 is provided on the upper surface (one end face) side of the main body part 240. The LED substrate 250 is attached to the light source attachment part 210. The light source mounting part 210 has a circular light source mounting surface 213 that contacts the LED substrate 250. The back surface of the mounting surface on which the LED 251 of the LED substrate 250 is mounted is bonded to the light source mounting surface 213 with an adhesive or the like. An electric wire insertion hole 211 through which a lead wire or the like passes is formed at the center of the light source mounting surface 213. Two through holes 212 are formed near the periphery of the light source mounting surface 213 so as to be aligned in the radial direction of the light source mounting surface 213 with the electric wire insertion hole 211 interposed therebetween. Each through-hole 212 communicates with a cavity 227 described later. The light source mounting surface 213 is not limited to a circle but may be a rectangle, an ellipse, or the like.

  An annular mounting groove 220 for mounting the globe 100 is formed around the light source mounting portion 210. The mounting groove 220 is formed by a groove inner peripheral wall 224 on the inner peripheral side, a groove outer peripheral wall 221 on the outer peripheral side, and a groove bottom 223 between the groove inner peripheral wall 224 and the groove outer peripheral wall 221. An annular engagement recess 222 is formed along the groove outer peripheral wall 221 in the vicinity of the upper end edge of the groove outer peripheral wall 221.

  A plurality of fins 230 are erected from the side surface of the metal casing 200. The fins 230 are integrally formed with the main body 240 so as to protrude outward in the radial direction of the main body 240. For example, 20 fins 230 are provided at equal intervals. The fins 230 dissipate heat of the LED substrate 250 attached to the light source attachment part 210 (heat generated by the LED 251 and the like mounted on the LED substrate 250), and prevent deterioration of components such as the LED 251 due to a temperature rise. The arrangement and number of fins 230 can be changed as appropriate.

  The fin 230 has a curved surface 231 and a continuous surface 232 from the upper surface (one end surface) side of the main body portion 240 toward the lower surface (other end surface) side of the main body portion 240. The curved surface 231 is curved in a convex shape outside the main body 240. The continuous surface 232 is continuous with the curved surface 231 and is lower than the top X of the curved surface 231. As described above, in the present embodiment, the height of the fin 230 is the highest at the top X of the curved surface 231 that protrudes outward from the main body 240, so that the lamp 500 emits light obliquely downward from the globe 100. Most of the light is irradiated outside without being blocked by the fins 230. Therefore, a wide light distribution angle can be obtained with the lamp 500.

  The fin 230 has a wing shape, the curved surface 231 is a belt-like curved surface, the continuous surface 232 is a surface where a belt-like curved surface and a belt-like inclined plane are connected, and both side surfaces extend from the side surface of the main body portion 240 to the outside of the main body portion 240. It is a flat surface that extends toward it. The side surface of the fin 230 has a substantially D-shaped outline. Note that the continuous surface 232 may not include a curved surface, and conversely, the entire surface may be a curved surface. Moreover, the continuous surface 232 may include a plane (vertical plane) that is not inclined.

  An angle R1 formed by the curved surface 231 of the fin 230 and the upper surface of the main body 240 is not less than 15 degrees and not more than 25 degrees. That is, 15 ° <R1 <25 °. Here, the angle R <b> 1 formed by the curved surface 231 of the fin 230 and the upper surface of the main body 240 is an angle at which the lower side of the main body 240 can be seen from the upper surface of the main body 240. More specifically, when the metal casing 200 is viewed from the front, the tangent line of the curved surface 231 of the fin 230 passing through the boundary position (connection point) between the curved surface 231 of the fin 230 and the upper surface of the main body 240, This is an angle formed by a straight line parallel to the upper surface of the main body 240. If the relationship of 15 ° <R1 <25 ° is satisfied, a wide light distribution angle can be obtained with the lamp 500 while ensuring sufficient heat dissipation. If the relationship of 15 ° <R1 <25 ° is satisfied in calculation, the lamp 500 can obtain a 1/2 beam angle (light distribution angle) of 200 degrees or more. Actually, when the angle R1 formed by the curved surface 231 of the fin 230 and the upper surface of the main body 240 is set to 20 degrees, the lamp 500 can obtain a 1/2 beam angle of 230 degrees. The 1/2 beam angle is an angle at which the brightness is halved with respect to the center in the light distribution curve. For example, in the lamp 500 having a 1/2 beam angle of 230 degrees, at least half the brightness obtained on the optical axis can be obtained in a range of 230 degrees spreading on both sides of the optical axis.

  The curved surface 231 of the fin 230 is curved so as to gradually increase from the upper edge of the side surface of the main body 240 and extends downward, and is connected to the continuous surface 232 at the top X. In the present embodiment, since the fins 230 are provided from the upper end of the main body 240, the heat dissipation is improved. The curved surface 231 may be formed from a position below the upper end edge of the side surface of the main body 240. That is, the fin 230 may be provided from a position below the upper end of the main body 240.

  The continuous surface 232 of the fin 230 is connected to the apex X of the curved surface 231, is inclined so as to be gradually lowered, and extends to a position above the lower end edge of the side surface of the main body 240. In the present embodiment, since the height of the fin 230 is gradually lowered downward, the lamp 500 can be attached to an instrument having a narrow opening for inserting the lamp 500. That is, the instrument conformity rate increases. Moreover, since the fin 230 is provided only up to a position above the lower end of the main body 240, the instrument compatibility rate is further increased. The continuous surface 232 may be formed up to the lower end edge of the side surface of the main body 240. That is, the fin 230 may be provided up to the lower end of the main body 240.

  The vertical distance L1 from the upper end of the fin 230 to the top X (the length in the vertical direction of the curved surface 231 of the fin 230) is the vertical distance L3 from the upper end to the lower end of the main body 240 in the vertical direction of the side surface of the main body 240. It is desirable that it is 0.1 times or more and 0.2 times or less of (length). That is, it is desirable that (L3 × 0.1) ≦ L1 ≦ (L3 × 0.2).

  The vertical distance L2 from the top X to the lower end of the fin 230 (the length in the vertical direction of the continuous surface 232 of the fin 230) is 0.7 times or more and 0.8 times the vertical distance L3 from the upper end to the lower end of the main body 240. The following is desirable. That is, it is desirable that (L3 × 0.7) ≦ L2 ≦ (L3 × 0.8).

  Here, the vertical distance L1 from the upper end of the fin 230 to the top X is, for example, 5.6 mm. The vertical distance L2 from the top X to the lower end of the fin 230 is, for example, 25.3 mm. The vertical distance L3 from the upper end to the lower end of the main body 240 is, for example, 33.9 mm. At this time, the relationship of (L3 × 0.1) ≦ L1 ≦ (L3 × 0.2) and the relationship of (L3 × 0.7) ≦ L2 ≦ (L3 × 0.8) are both satisfied.

  The width of the fin 230 gradually decreases from the upper surface side of the main body portion 240 toward the lower surface side of the main body portion 240. For example, the width W1 of the upper end of the fin 230 is set to about 1.5 times the width W2 of the lower end. Thereby, for example, when the metal casing 200 is molded with a mold, the molded metal casing 200 can be easily taken out from the mold.

  The distance between the fins 230 is equal at any position. That is, the side surfaces of the adjacent fins 230 are parallel to each other. The distance between the fins 230 may gradually become shorter from the upper surface side of the main body portion 240 toward the lower surface side of the main body portion 240.

  The portion sandwiched between the adjacent fins 230 of the main body 240 protrudes to the outermost side at the same position as the top X of the curved surface 231 of the adjacent fin 230. For example, the side surface of the main body 240 is vertical (or gradually increases) from the top edge to the top X, and gradually decreases from the top X to the bottom edge. That is, the side surface of the main body 240 has a “<” shape. Thereby, for example, when the metal casing 200 is molded with a mold, if the upper mold and the lower mold are separated at a position corresponding to the top X, the molded metal casing 200 is taken out from the mold. It becomes easy.

  A cylindrical cavity 227 for accommodating a part of the resin casing 300 is formed inside the metal casing 200. Two fitting grooves 228 and one guide groove 229 extending along the axial direction of the cavity 227 are formed on the peripheral wall of the cavity 227 (the inner wall of the metal housing 200). The two fitting grooves 228 correspond to the two through holes 212 of the light source mounting part 210 on a one-to-one basis. The inner diameter of each fitting groove 228 matches the inner diameter of the corresponding through hole 212, and each fitting groove 228 continues to the corresponding through hole 212 and extends to the lower end of the metal housing 200. Therefore, the two fitting grooves 228 are in positions facing each other along the radial direction of the cavity 227. In other words, when one fitting groove 228 of the two fitting grooves 228 is at a position of 0 degrees with respect to the center of the circular bottom wall (inner upper surface) of the cavity 227, the other The fitting groove 228 is at a position of 180 degrees with respect to the center of the circular bottom wall of the cavity 227. At this time, the guide groove 229 is at a position of 90 degrees with respect to the center of the circular bottom wall of the cavity 227. The guide groove 229 extends from a position below the upper edge of the peripheral wall of the cavity 227 to the lower end of the metal casing 200.

  In the present embodiment, the light source attachment portion 210 serves as a partition wall that separates the LED substrate 250 attached to the light source attachment portion 210 and the resin casing 300 that is partially housed in the cavity 227.

  FIG. 11 is a perspective view of the globe 100 of the lamp 500.

  As shown in FIG. 11, the globe 100 includes a light transmission part 110, an attachment cylinder part 120, an engagement convex part 130, and a fixing part 140.

  The light transmission part 110 is formed of a transparent or translucent resin. As the resin, for example, a material such as polycarbonate or acrylic is selected according to product specifications. The light transmission part 110 is formed by molding a resin having a predetermined plate thickness into a spherical shape. The light transmission part 110 has a shape in which a part of a hollow sphere is missing. The light transmission unit 110 transmits light emitted from the LED 251 mounted on the LED substrate 250 from the inside to the outside. The light transmission unit 110 may have a function of diffusing, condensing, and reflecting light according to product specifications. With respect to these functions, a diffusion layer (or a diffusion surface), a lens, a reflection layer (or a reflection surface), etc. are formed when molding the resin that is the base material of the light transmitting portion 110, and the base material itself has this function. You may make it have directly, and may implement | achieve by methods, such as bonding another members, such as an optical film which has the said function, on the surface of a base material. The shape of the light transmission part 110 is not limited to a spherical shape, and may be a hemispherical shape, a long spherical shape, a rectangular parallelepiped shape, a dome shape or the like.

  The mounting cylinder part 120 is formed integrally with the light transmission part 110. The mounting cylinder part 120 is formed by molding a resin having a predetermined plate thickness into a cylindrical shape. That is, the attachment cylinder part 120 protrudes the part which the light transmission part 110 lacked the ball | bowl to the cylinder shape.

  A predetermined number of engaging convex portions 130 are formed so as to protrude from the outer peripheral surface of the mounting cylinder portion 120.

  The fixing part 140 is formed so as to protrude outwardly from the lower end of the mounting cylinder part 120 in a bowl shape.

  The mounting cylinder portion 120 is inserted into the mounting groove 220 of the metal housing 200. When the mounting cylinder part 10 is inserted into the mounting groove 220, the engaging convex part 130 engages with the engaging concave part 222 formed in the mounting groove 220. The fixing part 140 is fixed in the vicinity of the groove bottom part 223 which is the bottom part of the attachment groove 220. Thereby, the globe 100 is fixed to the metal housing 200.

  FIG. 12 is a perspective view of the resin casing 300 of the lamp 500. FIG. 13 is a front view of the resin casing 300. FIG. 14 is a side view of the resin casing 300. FIG. 15 is a rear view of the resin casing 300. FIG. 16 is a top view of the resin casing 300. FIG. 17 is a cross-sectional view of the resin casing 300 taken along the line CC. FIG. 18 is a DD cross-sectional view of the resin casing 300.

  As shown in FIGS. 12 to 18, the resin casing 300 includes a main body portion 310, a boss portion 320, a flange portion 330, a screw portion 340, and a raised portion 360. The main body portion 310, the boss portion 320, the flange portion 330, the screw portion 340, and the raised portion 360 are integrally formed with a resin such as polyethylene terephthalate, for example.

  The main body 310 is substantially cylindrical. In the main body 310, a lighting device or the like on which several electronic components are mounted is housed in order to light the LED 251 mounted on the LED board 250. A rectangular insertion guide 311 is provided on the side wall (outer peripheral wall) of the main body 310. The insertion guide 311 extends along the axial direction of the main body 310 from a position below the upper end of the main body 310 to a position above the lower end of the main body 310. Four fitting guides 312 are provided at equal intervals on the upper end of the main body 310. Each fitting guide 312 has a cylindrical shape and protrudes upward from the annular upper end surface of the main body 310.

  The boss portions 320 are substantially cylindrical, and two boss portions 320 are provided on the side wall of the main body portion 310. The two boss portions 320 are provided at equal intervals. That is, the two boss portions 320 are provided at positions 180 degrees apart in the circumferential direction of the main body portion 310. The two boss portions 320 may be provided at positions separated by an angle other than 180 degrees. The number of boss portions 320 is not limited to two, and may be one or three or more.

  The boss portion 320 is formed with a hole 321 for inserting the above-described board fastening screw 260 along the axial direction of the main body portion 310. The board fastening screw 260 is inserted into the hole 321 of the boss part 320 through the LED board 250 and the light source mounting part 210 (a partition wall separating the LED board 250 and the resin housing 300) of the metal housing 200. Then, the LED substrate 250 is fastened to the light source mounting portion 210 of the metal casing 200. The board fastening screws 260 are examples of fastening members, and other types of fastening members such as rivets and press-fit bolts may be used instead.

  The outer part 322 which is a part of the side wall of the boss part 320 is located outside the side wall of the main body part 310. That is, the outermost part of the side wall of the boss part 320 (outermost part of the boss part 320) is positioned outside the outermost part of the side wall of the main body part 310 (outermost part of the main body part 310). Here, the thickness of the boss part 320 should be such a thickness that the hole 321 for inserting the board fastening screw 260 can be formed. Therefore, the presence of the boss portion 320 may reduce the space for accommodating the lighting device and the like inside the main body portion 310. However, in the present embodiment, since the boss portion 320 is displaced to the outside of the main body portion 310, the space inside the main body portion 310 is increased accordingly. That is, according to the present embodiment, a wide space can be secured inside the resin casing 300.

  An inner part 323 that is a part of the side wall (opposite to the outer part 322) of the boss part 320 is located inside the side wall of the main body part 310. That is, the innermost part (the innermost part of the boss part 320) of the side wall of the boss part 320 is located inside the innermost part (the innermost part of the main body part 310) of the side wall of the main body part 310. As described above, in the present embodiment, since the two boss portions 320 project to the inside of the main body portion 310, the portion projecting inward (the inner portion 323) is positioned within the main body portion 310 such as the lighting device. Can be used.

  The outer diameter D1 of the boss part 320 is larger than the plate thickness D2 of the side wall of the main body part 310. That is, D1> D2. If the relationship of D1> D2 is satisfied, the outer portion 322 of the boss portion 320 is located outside the side wall of the main body portion 310, and the inner portion 323 of the boss portion 320 is located inside the side wall of the main body portion 310. Can be realized.

  The outer diameter D1 of the boss part 320 is preferably not less than 2 times and not more than 3 times the plate thickness D2 of the side wall of the main body part 310. That is, it is desirable that (D2 × 2) ≦ D1 ≦ (D2 × 3).

  Here, in order to achieve both the insulation and the downsizing of the main body 310, the thickness D2 of the side wall of the main body 310 is set to 1.66 mm, for example. Assuming that a general M2 tapping screw is used as the board fastening screw 260, the inner diameter D3 (the diameter of the hole 321) of the boss portion 320 is set to 1.7 mm, for example. In order to achieve both the securing of the strength of the boss part 320 and the miniaturization of the boss part 320, the plate thickness of the side wall of the boss part 320 is, for example, 1.0 mm. At this time, since D1 = D3 + 1.0 × 2 = 3.7 mm, the relationship of D1> D2 is satisfied. Furthermore, the relationship of (D2 × 2) ≦ D1 ≦ (D2 × 3) is also satisfied.

  The center of the hole 321 of the boss part 320 is located at the center of the side wall of the main body part 310. For this reason, the outer portion 322 and the inner portion 323 of the boss portion 320 protrude from the side wall of the main body portion 310 by substantially the same width. That is, the boss part 320 projects evenly on both sides of the side wall of the main body part 310.

  A tip end portion 324 that is a part of the boss portion 320 protrudes from one end surface of the side wall of the main body portion 310 (upper end surface of the main body portion 310).

  The height H1 of the boss portion 320 is not less than 1.5 times and not more than 2.5 times the height H2 of the portion (the tip portion 324 of the boss portion 320) protruding upward from the main body portion 310 of the boss portion 320. desirable. That is, it is desirable that (H2 × 1.5) ≦ H1 ≦ (H2 × 2.5).

  Here, the height H1 of the boss portion 320 is, for example, 10.9 mm. The height H2 of the portion of the boss portion 320 that protrudes upward from the main body portion 310 is, for example, 6.1 mm. At this time, the relationship of (H2 × 1.5) ≦ H1 ≦ (H2 × 2.5) is satisfied.

  The depth H3 of the hole 321 of the boss part 320 is arbitrary, but is desirably larger than the height H2 of the part protruding upward from the main body part 310 of the boss part 320. That is, H3> H2 is preferable. When H3> H2 is satisfied, the hole 321 of the boss portion 320 extends from the distal end portion 324 of the boss portion 320 to the distal end portion of the boss portion 320 with reference to one end surface of the side wall of the main body portion 310 (upper end surface of the main body portion 310). That is, the other side of 324 is formed. As described above, by deeply opening the hole 321 of the boss portion 320, the long board fastening screw 260 can be deeply screwed. If the long board fastening screw 260 is screwed so as to straddle the upper end surface of the main body 310, the strength of the entire boss part 320 (made of resin) can be improved by the board fastening screw 260.

  Here, the depth H3 of the hole 321 of the boss part 320 is, for example, 7.3 mm. As described above, the height H2 of the portion of the boss 320 that protrudes upward from the main body 310 is, for example, 6.1 mm. At this time, the relationship of H3 <H2 is satisfied.

  The outer peripheral surface of the side wall of the main body 310 extends vertically from the upper end edge to the lower end edge. When viewed from above, the upper end of the main body 310 itself becomes the upper edge of the outer peripheral surface of the side wall of the main body 310 in a portion where the boss 320 is not present. In the portion where the boss portion 320 is present, the lower end of the boss portion 320 becomes the upper end edge of the outer peripheral surface of the side wall of the main body portion 310. The outer portion 322 of the boss portion 320 and the side wall of the main body portion 310 are continuous via a step 325. On the other hand, a part of the inner peripheral surface of the side wall of the main body 310 extends obliquely from the upper end edge to the lower end edge. An angle R2 of the obliquely extending portion is 90.5 degrees, for example. The angle R3 of the other part is 90 degrees. When viewed from above, the upper end of the main body 310 itself becomes the upper edge of the inner peripheral surface of the side wall of the main body 310 in a portion where the boss 320 is not present. In the portion where the boss portion 320 is present, the lower end of the boss portion 320 becomes the upper end edge (dotted line Y in FIG. 14) of the inner peripheral surface of the side wall of the main body portion 310. In the portion where the boss portion 320 is present, the inner peripheral surface of the side wall of the main body portion 310 is curved inwardly in a shape similar to the inner portion 323 of the boss portion 320. The inner side 323 of the boss part 320 and the side wall of the main body part 310 are continuous, and are inclined at the same angle R2. That is, the boss portion 320 gradually becomes thinner from the lower end toward the upper end (the above-described outer diameter D1 is, for example, the outer diameter of the upper end). Thereby, it becomes easy to insert the front end portion 324 of the boss portion 320 into the through hole 212 of the light source mounting portion 210 of the metal casing 200.

  The raised portion 360 rises from one end surface of the side wall of the main body portion 310 (the upper end surface of the main body portion 310) and is connected to the distal end portion 324 of the boss portion 320. The height of the raised portion 360 (the width in the axial direction of the main body 310), the length (the width in the circumferential direction of the main body 310), and the thickness (the width in the radial direction of the main body 310) are all arbitrary. For example, it is desirable that the height of the raised portion 360 is not less than 0.1 times and not more than 0.5 times the height H2 of the portion protruding upward from the main body portion 310 of the boss portion 320. It is desirable that the length of the raised portion 360 extends by the same amount on both sides of the boss portion 320 to a position where it does not hit the fitting guide 312. The thickness of the raised portion 360 is preferably the same as the plate thickness D2 of the side wall of the main body portion 310.

  In the present embodiment, the raised portion 360 reinforces the proximal end (base) of the distal end portion 324 of the boss portion 320. Therefore, problems such as the boss portion 320 being bent or bent are less likely to occur. The raised portion 360 is formed along the side wall of the main body portion 310 in order to improve the moldability of the resin casing 300.

  Here, the resin casing 300 and the metal casing 200 have different expansion coefficients, and the value of the resin casing 300 is larger than that of the metal casing 200. That is, the resin casing 300 has a higher coefficient of thermal expansion than the metal casing 200. Therefore, in a state where the resin casing 300 is mounted on the metal casing 200, when the operating environment temperature of the lamp 500 is high, a pressing stress is applied to the resin casing 300, and when the operating environment temperature of the lamp 500 is low, the resin casing 300 is attached. A tensile stress is applied to the housing 300. Since the base end (base) of the front end portion 324 of the boss portion 320 is reinforced by forming the raised portions 360 on both sides, the base end 324 has sufficient strength against such stress.

  The lamp 500 generates heat when it is turned on and cools when it is turned off. Further, the lamp 500 is used by being repeatedly turned on and off due to the nature of the product. Therefore, it is effective to improve the reliability of the lamp 500 by adopting the above structure.

  The resin casing 300 is attached to the metal casing 200 by the following method (an assembly method of the casing portion of the lamp 500, that is, a manufacturing method of the lamp 500).

  First, the two boss portions 320 of the resin casing 300 can be inserted into the two fitting grooves 228 of the metal casing 200, and the insertion guide 311 of the main body 310 of the resin casing 300 is the guide groove of the metal casing 200. The positions of the two boss portions 320 and the insertion guide 311 are adjusted so that they can be inserted into the H.229. Next, the upper end portion of the resin casing 300 is inserted to the back of the cavity 227 of the metal casing 200. As a result, the outer portions 322 of the two boss portions 320 are fitted into the two fitting grooves 228 of the metal casing 200. Further, the front end portions 324 of the two boss portions 320 penetrate the two through holes 212 of the light source mounting portion 210 of the metal housing 200. At this time, the height of the upper end surface of the distal end portion 324 matches the height of the light source mounting surface 213 of the metal housing 200. That is, the height of the upper end surface of the front end portion 324 matches the height of the back surface of the LED substrate 250. Subsequently, the two board fastening screws 260 are inserted into the holes 321 of the two boss portions 320 passing through the two through holes 212 of the light source mounting portion 210. At this time, the two board fastening screws 260 sequentially connect the two through holes 253 of the LED board 250 attached to the light source attachment part 210 of the metal casing 200 and the two through holes 212 of the light source attachment part 210. To penetrate. Thereby, the LED board 250 is fastened to the light source mounting part 210 of the metal casing 200.

  As described above, in the present embodiment, when the resin casing 300 is attached to the metal casing 200, the outer portions 322 of the two boss portions 320 are fitted into the two fitting grooves 228 of the metal casing 200. Therefore, the rotation of the resin casing 300 relative to the metal casing 200 can be prevented. If the metal casing 200 and the resin casing 300 are fastened by the board fastening screws 260, the rotation of the resin casing 300 with respect to the metal casing 200 can be prevented. In this case, the back surface of the LED substrate 250 and the light source mounting surface 213 may be bonded using an adhesive member or the like.

  In the present embodiment, the resin casing 300 cannot be inserted into the metal casing 200 unless the positions of the two boss portions 320 are aligned with the two fitting grooves 228 of the metal casing 200. The resin casing 300 can be prevented from being inserted in the wrong direction. However, with only the two boss portions 320, the resin casing 300 can be inserted even if it is rotated 180 degrees from the correct orientation. Therefore, in this embodiment, an insertion guide 311 is further provided in the main body portion 310. That is, in this embodiment, the resin casing 300 cannot be inserted into the metal casing 200 unless the position of the insertion guide 311 is aligned with the guide groove 229 of the metal casing 200. Can be reliably prevented from being inserted in the wrong direction. Note that the same effect can be obtained by providing the two boss portions 320 at positions separated by an angle other than 180 degrees instead of providing the insertion guide 311.

  In the present embodiment, the main body 310 is not limited to a substantially cylindrical shape as long as it has a cylindrical shape, and may have another shape. The shape of the cavity 227 of the metal housing 200 may be appropriately changed according to the shape of the main body 310.

  As long as the hole 321 for inserting the board fastening screw 260 is formed, the boss portion 320 is not limited to a substantially cylindrical shape, and may have another shape. What is necessary is just to change suitably the shape of the through-hole 212 of the light source attachment part 210 according to the shape of the boss | hub part 320. FIG.

  In the side wall of the boss part 320, there may be no portion (inner side part 323) located inside the side wall of the main body part 310. For example, the innermost part of the boss part 320 may be at the same position as the innermost part of the main body part 310. In this case, since the boss portion 320 does not protrude to the inside of the main body portion 310, a wider space can be secured inside the resin casing 300.

  The collar portion 330 is formed so as to protrude outward from the lower end portion of the main body portion 310 in a bowl shape. The outer diameter of the collar 330 must be larger than the inner diameter of the lower end of the metal housing 200. In order to improve the design, it is desirable that the outer diameter of the collar 330 is the same as the outer diameter of the lower end of the metal casing 200. In the present embodiment, the boss portion 320 is provided inside the flange portion 330, but may be provided outside the flange portion 330.

  When the resin casing 300 is attached to the metal casing 200, the flange 330 abuts on the lower end of the metal casing 200, and the resin casing 300 is more than necessary and the cavity 227 of the metal casing 200 is larger. It is prevented from being inserted in the back.

  The screw part 340 is formed below the flange part 330. The base part 400 is screwed onto the screw part 340.

  FIG. 19 is a perspective view of the lid portion 350 of the lamp 500. FIG. 20 is a top view of the lid portion 350.

  The lid portion 350 is formed of, for example, the same resin as the main body portion 310 of the resin casing 300, and is attached to the main body portion 310 so as to cover the opening above the main body portion 310 of the resin casing 300.

  As shown in FIGS. 19 and 20, the lid portion 350 is formed with a through tube portion 351, two fitting recesses 352, four fitting hole portions 353, and four notch portions 354.

  The connecting tube portion 351 has a cylindrical shape and is formed with a hole through which an electric wire for electrically connecting the lighting device housed in the main body portion 310 of the resin casing 300 and the LED substrate 250 is passed. In a state where the resin casing 300 is attached to the metal casing 200, the wire tube portion 351 passes through the electric wire insertion hole 211 of the light source mounting portion 210 of the metal casing 200.

  The two fitting recesses 352 are notches that match the position and shape (thickness) of the two boss portions 320 of the resin casing 300, and are fitted to the two boss portions 320. There are notches 354 on both sides of each fitting recess 352. Each notch 354 is a notch that matches the position and shape (thickness) of each raised portion 360 of the resin casing 300, and fits with each raised portion 360.

  The four fitting hole portions 353 are holes that match the position and shape (thickness) of the four fitting guides 312 of the main body portion 310 of the resin casing 300, and are fitted to the four fitting guides 312. To do. Note that four fitting guides 312 may be formed in the lid portion 350 and four fitting hole portions 353 may be formed in the main body portion 310 so that they can be fitted to each other.

  The lid 350 may be integrally formed with the main body 310 of the resin casing 300 or may be omitted.

  As described above, according to the present embodiment, the LED board 250, the metal casing 200, and the resin casing 300 are not simply fixed integrally by the board fastening screw 260 and the boss portion 320, Stress (pressing stress or tensile stress) due to screwing stress or operating environment temperature when assembling the lamp 500 by the board fastening screw 260 or the raised portion 360 connected to the base end (base) of the tip portion 324 of the boss portion 320. A strength sufficient to cope with the above can be obtained.

  As mentioned above, although embodiment of this invention was described, you may implement this embodiment partially. For example, only one of those described as “parts” in the description of this embodiment may be adopted, or some arbitrary combinations may be adopted. In addition, this invention is not limited to this embodiment, A various change is possible as needed.

  DESCRIPTION OF SYMBOLS 100 Globe, 110 Light transmission part, 120 Mounting cylinder part, 130 Engaging convex part, 140 Fixing part, 200 Metal housing, 210 Light source mounting part, 211 Electric wire insertion hole, 212 Through hole, 213 Light source mounting surface, 220 Mounting groove 221 groove outer peripheral wall, 222 engaging recess, 223 groove bottom, 224 groove inner peripheral wall, 227 cavity, 228 fitting groove, 229 guide groove, 230 fin, 231 curved surface, 232 continuous surface, 240 main body, 250 LED substrate 251 LED, 252 Substrate hole, 253 Through hole, 260 Substrate fastening screw, 300 Resin casing, 310 Main body part, 311 Insertion guide, 312 Fitting guide, 320 Boss part, 321 hole, 322 Outer part, 323 Inner part 324, tip, 325 step, 330 collar, 340 screw, 350 lid, 351 line tube Part, 352 fitting concave part, 353 fitting hole part, 354 notch part, 360 raising part, 400 base part, 500 lamp, 600 lamp socket, 700 lighting fixture body, 800 lighting device, 801 ceiling.

Claims (12)

A tubular body,
A boss formed on the side wall of the main body so that a hole for inserting a fastening member along the axial direction of the main body is formed, and a part protrudes from one end surface of the side wall of the main body.
A lamp storage member, comprising: a raised portion in which a part of the one end surface of the side wall of the main body portion rises and is connected to the protruding portion of the boss portion.   The lamp storage member according to claim 1, wherein the raised portion extends in a circumferential direction of the main body portion from both sides of the boss portion to a position where the raised portion does not hit another component. The hole of the boss part is formed from the protruding part of the boss part to the opposite side of the protruding part of the boss part on the basis of the one end face of the side wall of the main body part. The storage member for a lamp according to claim 1 or 2 . The said boss | hub part is a substantially cylindrical shape, The outer diameter of the said boss | hub part is larger than the plate | board thickness of the side wall of the said main-body part, The lamp | ramp as described in any one of Claim 1 to 3 characterized by the above-mentioned . Storage member. The part for the side wall of the said boss | hub part is located in the outer side of the side wall of the said main-body part, The storage member for lamps as described in any one of Claims 1-4 characterized by the above-mentioned . A storage member for a lamp according to any one of claims 1 to 5 ,
A lighting device that is housed in the main body of the housing member and lights a light source;
A substrate on which the light source is mounted;
A housing for housing the substrate and at least a part of the housing member, the housing having a partition wall separating the substrate and the housing member;
A lamp comprising: a fastening member that passes through the substrate and a partition wall of the housing and is inserted into a hole of a boss portion of the housing member to fasten the substrate to the partition wall of the housing. The lamp according to claim 6, wherein the housing member has a coefficient of thermal expansion larger than that of the housing. The lamp according to claim 6 or 7, wherein a groove in which a boss portion of the storage member is fitted is formed in an inner wall of the housing. Wherein the housing according to any one of claims 7 claim 6, characterized in that they contain at least a portion of said housing member as the boss portion of said housing member penetrates the partition wall of the housing Lamp. The housing member further includes a lid portion in which a hole for passing an electric wire electrically connecting the lighting device and the substrate and a notch adapted to the shape of the boss portion and the raised portion are formed. The lamp according to any one of claims 6 to 9 , wherein A base part electrically connected to the lighting device;
A cover that covers the light source;
The lamp according to any one of claims 6 to 10 , wherein the lamp is configured in a light bulb shape. A lamp according to any one of claims 1 1 to claim 6,
A lamp socket in which the lamp is mounted;
A lighting apparatus comprising: a lighting fixture main body that supplies power input from an external power source to the lamp through the lamp socket.

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