JP5134155B2 - lamp - Google Patents

Description

  The present invention relates to a lamp using a solid light emitting element as a light source.

2. Description of the Related Art Conventionally, a bulb-type fluorescent lamp is known that includes a fluorescent lamp as a light source, a lighting unit that lights the fluorescent lamp, and an E-shaped base that is electrically connected to the lighting unit. Such a bulb-type fluorescent lamp has an E-shaped base that is the same as an incandescent bulb, and is as small as an incandescent bulb, and thus is used as an alternative to an incandescent bulb.
In recent years, lamps using solid light-emitting elements such as light-emitting diodes (LEDs), semiconductor laser diodes (LD), and electroluminescent elements (EL) as light sources have also been proposed as alternatives to incandescent bulbs (Patent Documents 1 to 3). 4). Moreover, since it does not have an E-shaped base, it is not a substitute for an incandescent bulb, but a lighting fixture using a solid light emitting element as a light source has also been proposed (Patent Document 5). The solid-state light emitting element has a longer life than a fluorescent lamp and does not contain harmful substances such as mercury and lead.

  In the lamp that can be used as an alternative to the incandescent lamp, the light source, the lighting unit, and the base are arranged in that order along the screwing axial direction of the base. For example, a case where the lamp is attached to the socket on the ceiling surface will be described as an example. The base is positioned at the top, the lighting unit is positioned below it, and the light source is positioned below it. The base, the lighting unit, and the light source are arranged in the downward direction. The reason why the lighting unit is arranged below the base is to make the lamp compact by enclosing a part of the lighting unit in the base. It is difficult to completely enclose a lighting unit on which a large electronic component such as an electrolytic capacitor is mounted in the base. Next, the reason why the light source is arranged below the lighting unit is that if it is arranged above or on the side, the lighting unit causes a shadow in the irradiated direction and the light distribution characteristic of the lamp is deteriorated.

JP 2005-276467 A JP 2006-156187 A JP 2006-313717 A JP 2008-91140 A JP 2002-109912 A

  However, if the light source, the lighting unit, and the base are arranged side by side along the screwing axis direction of the base, the lamp becomes long in the screwing axis direction, and when the lamp is attached to the ceiling or wall, the ceiling surface or wall surface Will protrude greatly. If the lamp protrudes greatly from the ceiling surface or wall surface in this way, it is not preferable in appearance, and when the lamp is covered with the lamp, the size of the lamp becomes large and the room becomes narrow.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a lamp that is an alternative to an incandescent lamp and that has a shorter screw axial dimension than the conventional one.

In order to solve the above-described problems, a lamp according to the present invention includes a heat sink, a plurality of solid light emitting elements as light sources mounted on the heat sink, a lighting unit that lights these solid light emitting elements, and the plurality of solid lights. A cover material covering the light emitting element, the heat sink is provided with a through hole, the lighting unit is disposed in the through hole and the cover material, and the plurality of solid state light emitting elements are , characterized in that it is arranged so as to surround the periphery of the pre-Symbol the lighting unit.

Since the lamp according to the present invention has an E-shaped base, it can be an alternative to an incandescent lamp.
In addition, since the plurality of solid state light emitting elements are arranged so as to surround the lighting unit in a direction intersecting the screwing axis direction of the E-shaped base with respect to the lighting unit, the dimensions of the E-shaped base in the screwing axis direction Is short. In particular, when the plurality of solid state light emitting elements are arranged so as to surround the lighting unit in a direction orthogonal to the screwing axial direction of the E-shaped base with respect to the lighting unit, the screwing axial direction of the E-shaped base is further increased. The dimension in can be shortened. Further, in the screwing axial direction, an end edge of each solid state light emitting element on the side opposite to the E-shaped base is closer to the E-shaped base than an edge on the side opposite to the E-shaped base of the lighting unit. In the case of the configuration located on the side, the dimension of the E-shaped base in the screwing axial direction can be further shortened.

The disassembled perspective view which shows the lamp | ramp which concerns on 1st Embodiment. 1 is a longitudinal sectional view showing a lamp according to a first embodiment. Sectional arrow directional view along the AA line of FIG. 2 which shows the lamp | ramp which concerns on 1st Embodiment. The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 2nd Embodiment The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 3rd Embodiment A longitudinal sectional view showing a lamp according to a fourth embodiment The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 5th Embodiment The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 6th Embodiment The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 7th Embodiment The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 8th Embodiment Sectional arrow directional view along the AA line of FIG. 10 which shows the lamp | ramp which concerns on 8th Embodiment. The longitudinal cross-sectional view which shows the lamp | ramp which concerns on 9th Embodiment Sectional arrow directional view along the AA line of FIG. 12 which shows the lamp | ramp which concerns on 9th Embodiment The figure for demonstrating arrangement | positioning of the LED module of the lamp | ramp which concerns on 10th Embodiment. The figure for demonstrating arrangement | positioning of the LED module of the lamp | ramp which concerns on 11th Embodiment.

Embodiments of a lamp according to the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is an exploded perspective view showing the lamp according to the first embodiment, FIG. 2 is a longitudinal sectional view showing the lamp according to the first embodiment, and FIG. 3 shows the first embodiment. It is a cross-sectional arrow view along the AA line of FIG. 2 which shows the lamp | ramp which concerns.

  As shown in FIGS. 1 to 3, the lamp 100 according to the present embodiment is a lamp intended to replace an incandescent bulb, and includes a plurality of LED modules 110, a lighting unit 120 that lights the LED modules 110, An E-shaped base 130 electrically connected to the lighting unit 120 and a case 140 in which the LED module 110 and the lighting unit 120 are accommodated and the base 130 is attached are provided.

  As shown in FIGS. 1 and 2, the external shape of the lamp 100 is, for example, a shape in which an E-shaped base 130 protrudes from the center of one end surface of a short cylinder, and is in the screwing axial direction of the base 130 (FIG. 2). The dimension L1 in the X axis direction) is 30 to 80 mm, and the dimension L2 in the direction orthogonal to the screwing axis direction (the direction orthogonal to the X axis shown in FIG. 2, as an example on the paper in the Y axis direction) is 50 to 150 mm. The thickness is preferably 80 to 100 mm. Since the lamp 100 has such a shape and size, it is easy to fit in the palm of the hand and can be easily attached to the ceiling or wall socket. It is also excellent in design when mounted on a ceiling or wall.

  FIG. 2 shows a silhouette of a conventional general light bulb-type fluorescent lamp with reference numeral 1 indicated by a two-dot chain line. As is clear from this figure, the lamp 100 has an X axis compared to the conventional light bulb-type fluorescent lamp. The dimension L1 in the direction is remarkably short, and this dimensional difference is due to the fact that the LED module 110 and the lighting unit 120 are arranged side by side in the direction orthogonal to the X axis, not arranged in the X axis direction.

  Each LED module 110 includes, for example, a substrate 111, LED elements 112 as solid light emitting elements mounted in a matrix on the substrate 111, and a wavelength conversion member 113 that seals the LED elements 112. White light is emitted in the axial direction (the direction opposite to the screwing direction of the cap 130). In the present embodiment, four LED modules 110 are used, which are connected in series by a wiring pattern 143a described later.

  The substrate 111 is, for example, a rectangular plate having a length of 15 to 60 mm, a width of 5 to 20 mm, and a thickness of 0.5 to 3 mm, and an insulating layer made of a ceramic substrate such as insulating alumina and a metal layer made of an aluminum plate or the like. And a two-layer structure. In the mounting area of the substrate 111, a wiring pattern electrically connected to the LED element 112 mounted in the area is formed. For example, the wiring pattern is formed by etching a copper foil of about 10 μm. It becomes.

  Each LED element 112 has, for example, a rectangular parallelepiped shape with a length of 0.2 to 2 mm, a width of 0.2 to 2 mm, and a thickness of 0.02 to 0.5 mm, and both electrodes of a P-type electrode and an N-type electrode are provided on the upper surface. A single-sided electrode type, which is bonded to a predetermined portion of the mounting region of the substrate 111 and connected to the wiring pattern via a wire. For example, the pitch between the LED elements 112 (the distance between the centers of the LED elements 112) is 2 to 5 mm, and 10 are arranged in a matrix of 2 rows and 5 columns.

  The wavelength conversion member 113 is, for example, a rectangular parallelepiped shape having a length of 5 to 50 mm, a width of 5 to 20 mm, and a thickness of 0.1 to 3 mm, and phosphor particles that convert output light from the LED element 112 into a desired light color. It becomes a mixed resin, and 10 LED elements 112 are collectively covered. In addition, as resin of the wavelength conversion member 113, an epoxy resin, a silicone resin, a polyimide, etc. can be utilized.

The white light of the LED module 110 is obtained by using, for example, an InGaN-based LED element 112 having a blue emission color and a yellow-green phosphor, and a part of blue light emitted from the LED element 112 is yellow by the phosphor. The color is converted to green, and is generated by the color mixture of blue and yellow-green.
The LED module 110 is not limited to a configuration in which a plurality of LED elements 112 are collectively sealed by a single wavelength conversion member 113, and each LED element 112 is sealed by a wavelength conversion member 113. It may be. Further, the LED module 110 may be detachable and replaceable with respect to the case 140.

  The lighting unit 120 is a known circuit that causes the LED element 112 to emit light using a commercial power source. For example, a rectifying circuit that rectifies AC power supplied from the commercial power source into DC power, and rectified by the rectifying circuit. A voltage adjustment circuit for adjusting the voltage value of the DC power is provided. The lighting unit 120 and the base 130 are electrically connected by a conducting wire 121, and the lighting unit 120 and the LED module 110 are electrically connected by a conducting wire 122 and a wiring pattern 143a.

The lighting unit 120 has a structure in which an electronic component such as a lead component such as an electrolytic capacitor 124 or a chip component such as a transistor 125 is mounted on a substrate 123. The size of the lighting unit 120 is generally 15 to 15 in the X-axis direction. The dimension in the direction perpendicular to the X axis is 50 mm, and is about 15 to 40 mm.
The base 130 is a screw-type base standardized by JIS C 7709 that can be adapted to a socket for an incandescent bulb. For example, three types (E26 / 25, E26 / 27, E26 / 30) and E27 are related to E26. 2 types (E27 / 25, E27 / 27) and 2 types (E39 / 41, E39 / 46) related to E39. A lead wire 121 of the lighting unit 120 is connected to the tip portion 131 and the screw forming portion 132 of the base 130, respectively, and receives AC power input at a two-point contact.

  The case 140 is provided with a base attachment portion 142 to which the base 130 is attached, a mounting portion 143 on which the LED module 110 and the lighting unit 120 are mounted, and a partition wall portion 144 that partitions the internal space of the case 140. In addition, the cover member 145 is attached so as to cover the LED module 110 and the lighting unit 120.

  The case main body 141 has a disk shape with a thickness L3 in the X-axis direction of 3 to 10 mm, and has a hole portion 141a communicating with the base mounting portion 142 at the center, and the X-axis side (the screwing direction of the base 130). On the surface in the opposite direction), a recessed portion 141b for fitting the mounting portion 143 is provided. Since the case main body 141 has a flat surface on the X axis + side (the screwing direction side of the cap 130), the case body 141 is excellent in design when the lamp 100 is attached to a ceiling or a wall.

The base attaching portion 142 is a cylindrical shape having a dimension L4 in the X-axis direction of 10 to 30 mm that is erected substantially at the center of the surface on the X-axis side of the case main body 141. It reaches the base 130 through the hole 141 a of the main body 141 and the base attaching part 142.
The mounting portion 143 has a disk shape with a diameter of 50 to 150 mm and a thickness L5 of 1 to 8 mm. The mounting portion 143 is fitted in the recessed portion 141b of the case main body 141, and the case is mounted by a known mounting method such as an adhesive or a screw. It is fixed to the main body 141. The surface on the X-axis side of the mounting portion 143 is a mounting surface of the LED module 110 whose surface is insulated, and a wiring pattern 143a for electrically connecting the LED module 110 and the lighting unit 120 is formed. Has been. The mounting portion 143 is made of a material having excellent heat dissipation such as aluminum or aluminum alloy, and also serves as a heat sink. Therefore, the temperature of the LED module 110 being lit can be lowered, and the light output of the LED module 110 can be improved. If graphite is used as the material of the mounting portion 143, the weight can be reduced while maintaining the role as a heat sink.

  The partition wall 144 has a cylindrical shape with an outer diameter of 15 to 40 mm, which has a larger diameter than the base mounting part 142, and is erected substantially at the center of the surface on the X-axis side of the mounting part 143. The internal space of the case 140 surrounded by the material 145 is partitioned into a circuit housing chamber 146 and a light source housing chamber 147 by the partition wall 144. The circuit housing chamber 146 is a space for housing the lighting unit 120, and the light source housing chamber 147 is a space for housing the LED module 110. The circuit housing chamber 146 exists at a position facing the base 130, and the light source housing chamber 147 exists in a direction orthogonal to the X axis of the circuit housing chamber 146 so as to surround the circuit housing chamber 146. Thus, since the space in which the lighting unit 120 is accommodated and the space in which the LED module 110 is accommodated are partitioned by the partition wall 144, the heat generated in the LED module 110 is difficult to propagate to the lighting unit 120.

  The end of the partition wall 144 on the X axis + side has a smaller inner diameter, and that portion serves as a circuit mounting portion 144 a for mounting the lighting unit 120. The lighting unit 120 is mounted on the case main body 141 so that the substrate 123 is placed on the circuit mounting portion 144a. Thus, since the lighting unit 120 is mounted on the circuit mounting portion 144a, a gap is generated between the lighting unit 120 and the mounting portion 143, and the heat of the LED module 110 is transmitted through the mounting portion 143. Hard to propagate to.

  The cover member 145 has a petri dish shape including a cylindrical side surface portion 145a and a disk-shaped front surface portion 145b that closes one opening of the side surface portion 145a, and a dimension L6 in the X-axis direction is 12 to 50 mm. The dimension in the direction orthogonal to the X axis is 50 to 150 mm. The cover member 145 has a known attachment such as an adhesive, a screw, and a locking claw so that the end surface on the X axis + side of the side surface portion 145a is brought into contact with the outer peripheral edge of the surface on the X axis − side of the case body 141. It is attached to the case main body 141 by the method.

  The cover material 145 is made of a light-transmitting material such as a light-transmitting resin or glass, and the output light of the LED module 110 is laterally (X-axis) from the side surface portion 145a as indicated by an arrow in FIG. (Direction orthogonal to the direction) and also emitted from the front surface portion 145b toward the front (X-axis-side direction). Since the LED module 110 is arranged in an annular shape so as to surround the lighting unit 120, even if the LED module 110 having high directivity is used as a light source, the lamp 100 is not a point light source but a surface light source. Can do. Further, the outer surface of the cover material 145 is a textured surface that has been subjected to a satin treatment, and the output light of the LED module 110 is diffused by the cover material 145 so that a light distribution pattern close to an incandescent bulb can be obtained.

[Second Embodiment]
FIG. 4 is a longitudinal sectional view showing a lamp according to the second embodiment. As shown in FIG. 4, the lamp 200 according to the second embodiment is different from the lamp 100 according to the first embodiment in that a light diffusion layer 250 is formed on the inner surface of a cover material 145. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  For example, the light diffusion layer 250 is formed to have a thickness of 0.1 to 3 mm over the entire inner surface of the cover material 145 and is made of various resins or materials such as inorganic materials (such as silica and alumina). By the light diffusion layer 250, the output light of the LED module 110 with high directivity is evenly diffused over the entire inside of the cover material 145, and a light distribution pattern closer to an incandescent bulb can be obtained.

The light diffusion layer 250 is not necessarily formed over the entire inner surface of the cover material 145, and may be formed only in a part of the region. Further, another layer may be interposed between the cover material 145 and the light diffusion layer 250.
[Third Embodiment]
FIG. 5 is a longitudinal sectional view showing a lamp according to the third embodiment. As shown in FIG. 5, the lamp 300 according to the third embodiment includes a protrusion 341 c provided on the outer peripheral surface of the main body 341, a heat sink 348 provided on the mounting portion 343, and circuit accommodation. The point which has the cover body 349 for the chamber 346 differs from the lamp | ramp 100 which concerns on 1st Embodiment. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  A case 340 of the lamp 300 according to the third embodiment includes a case main body 341, a base attachment portion 342 to which the base 130 is attached, a mounting portion 343 on which the LED module 110 and the lighting unit 120 are mounted, and an interior of the case 340. A partition wall 344 that partitions the space is provided, and a cover member 345 is attached so as to cover the LED module 110 and the lighting unit 120.

The case main body 341 has a cylindrical shape with a thickness L7 in the X-axis direction of 10 to 25 mm, and has a hole portion 341a that communicates with the base mounting portion 342 in the center, and a mounting portion 343 on the surface on the X-axis side. A recessed portion 341b is provided for fitting.
A pair of protrusions 341 c are provided on the outer peripheral surface of the case main body 341 so as to face each other. Since these protrusions 341c are provided, it is easy to screw the base 130 by turning the lamp when attaching the lamp 300 to a socket (not shown). Further, it is easy to turn the lamp when removing the lamp 300. Further, when the lamp 300 is attached to a socket that is out of reach by using a jig, the lamp 300 can be easily rotated with the jig. Note that the number and arrangement of the protrusions 341c are not limited to the above, but are preferably provided to the extent that the appearance of the lamp 300 is not impaired.

The configurations of the base attaching portion 342 and the mounting portion 343 are substantially the same as the base attaching portion 132 according to the first embodiment, and a heat sink 348 is attached to the surface of the mounting portion 343 on the X axis side.
The heat sink 348 has a disk shape with a thickness L8 of 3 to 15 mm, and a through hole for allowing the partition wall 344 to pass therethrough is provided at the center thereof. The surfaces of the mounting portion 343 and the heat sink 348 are insulated, and a wiring pattern 343a for electrically connecting the LED module 110 and the lighting unit 120 is formed. The heat sink 348 is preferably made of a material having excellent heat dissipation such as aluminum or aluminum alloy, and more preferably made of a light material having excellent heat dissipation such as graphite. Since the LED module 110 is lowered in temperature by the heat sink 348, the light output of the LED module 110 can be further improved.

  The partition wall portion 344 has a cylindrical shape with an outer diameter of 15 to 50 mm and is erected in the approximate center of the surface on the X axis side of the mounting portion 343, and is surrounded by the case main body 341 and the cover material 345. Is partitioned into a circuit housing chamber 346 and a light source housing chamber 347. The circuit housing chamber 346 is a space for housing the lighting unit 120, and the light source housing chamber 347 is a space for housing the LED module 110. The position of the LED module 110 in the light source accommodation chamber 347 is located closer to the X-axis side than the position of the LED module 110 according to the first embodiment due to the thickness of the heat sink 348. Therefore, the output light of the LED module 110 can be efficiently emitted to the X axis-side.

An end on the X axis + side of the partition wall portion 344 has a smaller inner diameter, and that portion serves as a circuit placement portion 344a for placing the lighting unit 120 thereon. On the other hand, a thread groove is formed on the inner surface of the end portion on the X-axis side of the partition wall portion 344, and a lid 349 for closing the opening of the circuit housing chamber 346 can be attached and detached with a screw.
The lid 349 has a threaded portion 349a that fits into the threaded groove of the partition wall 344, and a recess 349b is provided on the surface on the X axis + side to ensure a wide circuit accommodating chamber 346. The lighting unit 120 is provided in the recess 349b. The tip of the electrolytic capacitor 124 is accommodated. The lid body 349 may be configured to be attached with a screw or the like.

  The cover member 345 includes a cylindrical side surface portion 345a and a plate-shaped front surface portion 345b that closes one opening of the side surface portion 345a. An opening 345c is provided to accommodate the body 349. Because of this configuration, the circuit housing chamber 346 can be opened by removing the lid 349 from the partition wall 344. Therefore, the lighting unit 120 can be replaced without removing the cover member 345 from the case main body 341. Note that the X-axis-side surface of the cover member 345 and the X-axis-side surface of the lid 349 are flush with each other.

[Fourth Embodiment]
FIG. 6 is a longitudinal sectional view showing a lamp according to the fourth embodiment. As shown in FIG. 6, the lamp 400 according to the fourth embodiment is different from the lamp 100 according to the first embodiment in that the front surface portion 445 b of the cover member 445 is a light shielding region. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  The cover material 445 has a petri dish shape including a cylindrical side surface portion 445a and a disk-shaped front surface portion 445b that closes one opening of the side surface portion 445a. The side surface portion 445a is made of a light transmitting material such as a light transmitting resin or glass, and the output light of the LED module 110 is emitted from the side surface portion 445a of the cover material 445 in a direction orthogonal to the X axis. . That is, the side surface portion 445 a becomes a light extraction region of the cover material 445.

  On the other hand, the front portion 445b is made of a non-translucent material such as colored resin (particularly black resin), metal, timber, glass fiber, or a composite thereof, and the output light of the LED module 110 is a cover material. The light is not emitted from the front surface portion 445b of 445 in the X-axis direction. That is, the front surface portion 445 b becomes a light shielding region of the cover material 445. Thus, since the lamp 400 has a structure in which light is extracted from the side (direction of the side surface portion 445a) and light is not extracted from the front (direction of the front surface portion 445b), the lamp 400 is used for a toilet, a washroom, or a bathroom. It is useful as indirect lighting. Further, since the inside of the case 440 is difficult to visually recognize from the outside, the appearance is excellent. A configuration in which light leaks somewhat from the front surface portion 445b may be used.

[Fifth Embodiment]
FIG. 7 is a longitudinal sectional view showing a lamp according to the fifth embodiment. As shown in FIG. 7, the lamp 500 according to the fifth embodiment is different from the lamp 100 according to the first embodiment in that the case 540 is not provided with a partition wall. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

In the case 540 of the lamp 500 according to the third embodiment, the case main body 141 is provided with a base attaching portion 142 to which the base 130 is attached, and a mounting portion 143 on which the LED module 110 and the lighting unit 120 are mounted. A cover member 145 is attached so as to cover the LED module 110 and the lighting unit 120.
In the case 540, a member corresponding to the partition wall 144 according to the first embodiment is not erected substantially at the center of the X-axis-side surface of the mounting portion 143, and the X-axis-side surface of the mounting portion 143 is not provided. Are provided with only a cylindrical circuit mounting portion 144a corresponding to the circuit mounting portion 144a according to the first embodiment. In the present embodiment, since the space inside the case 540 surrounded by the case main body 141 and the cover material 145 is not partitioned into the circuit storage chamber and the light source storage chamber, the output light of the LED module 110 is covered with the cover material 145. Is also emitted from the central region of the front surface portion 145b (region on the X-axis side of the lighting unit 120). Therefore, the entire cover material 145 can be illuminated uniformly, and a light distribution pattern closer to an incandescent bulb can be obtained. Since the structure of the case 540 is simple, the LED module 110 and the lighting unit 120 can be easily mounted on the case 540, the assembly of the lamp 500 is easy, and the LED module 110 and the lighting unit 120 can be easily detached. Is easy to reuse.

[Sixth Embodiment]
FIG. 8 is a longitudinal sectional view showing a lamp according to the sixth embodiment. As shown in FIG. 8, the lamp 600 according to the sixth embodiment is different from the lamp 100 according to the first embodiment in the direction of the lighting unit 120. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

In the lighting unit 120 according to the sixth embodiment, the substrate 123 is arranged in a direction perpendicular to the surface on the X axis − side of the mounting portion 143, and the substrate 123 is on the X axis − side of the mounting portion 143. The direction is different from the lighting unit 120 according to the first embodiment arranged in a direction parallel to the surface.
The case 640 is provided with a base attachment portion 142 to which the base 130 is attached, a mounting portion 143 on which the LED module 110 and the lighting unit 120 are mounted, and a partition wall portion 644 that partitions the internal space of the case 640. In addition, the cover member 145 is attached so as to cover the LED module 110 and the lighting unit 120. The partition wall portion 644 has a cylindrical shape with an outer diameter of 15 to 50 mm, which has a larger diameter than the base mounting portion 142 and is erected substantially at the center of the surface on the X-axis side of the mounting portion 143. The internal space of the case 140 surrounded by the material 145 is partitioned into a circuit housing chamber 146 and a light source housing chamber 147 by the partition wall portion 644.

  In the circuit housing chamber 146, a circuit fixing part 644a for fixing the lighting unit 120 is provided. The circuit fixing portion 644 a has a rail shape in which a groove into which the substrate 123 is inserted is formed, and is provided on the surface on the X-axis side of the mounting portion 143 and the inner surface of the partition wall portion 644. Note that the configuration of the circuit fixing portion 644a is not limited to the above, and any configuration that can fix the lighting unit 120 in the circuit housing chamber 146 may be used. Moreover, the direction of the lighting unit 120 is not limited to the above, and may be any direction as long as it is within the circuit accommodation chamber 146.

[Seventh Embodiment]
FIG. 9 is a longitudinal sectional view showing a lamp according to the seventh embodiment. As shown in FIG. 9, the lamp 700 according to the seventh embodiment is provided with a spacer 750 that surrounds and covers the base 130 and the socket 2 into which the base 130 is screwed on the base 130 side of the case 140. Different from the lamp 100 according to the first embodiment. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  The spacer 750 has a cylindrical shape made of a material such as resin, metal, timber, glass fiber, or a composite thereof, and has an outer diameter L9 of 50 to 150 mm, an X-axis dimension L10 of 15 to 60 mm, and a thickness L11. 3 to 30 mm, and the outer peripheral surface of the spacer 750 is flush with the outer peripheral surface of the case 140. Since the lamp 700 has the spacer 750, when the lamp 700 is mounted on the socket 3 of the lamp mounting surface 2 (for example, a ceiling surface or a wall surface), the gap between the lamp mounting surface 2 and the case 140 is hidden by the spacer 750 and the design is improved. It is good.

Note that the spacer 750 may have a configuration in which the dimension in the X-axis direction can be adjusted. For example, the spacer 750 may be made of a material having elasticity. With such a configuration, the gap between the case 140 and the ceiling surface can be hidden more clearly.
[Eighth Embodiment]
FIG. 10 is a longitudinal sectional view showing a lamp according to the eighth embodiment, and FIG. 11 is a sectional view taken along line AA of FIG. 10 showing the lamp according to the eighth embodiment. . As shown in FIGS. 10 and 11, the lamp 800 according to the eighth embodiment is different from the lamp 100 according to the first embodiment in that the case 140 is covered with a light shielding cover member 850 having a slit 851. . In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  The light shielding cover member 850 has a petri dish that is slightly larger than the cover member 145 and is attached to the cover member 145 so as to cover the outside of the cover member 145. On the side surface of the light shielding cover member 850, 16 slits 851 for taking out the output light of the LED module 110 out of the lamp 800 are provided at equal intervals along the circumferential direction in the X-axis direction.

  The light shielding cover material 850 is made of a non-translucent material such as a colored resin, metal, timber, glass fiber, or a composite thereof, and the portion 852 other than the slit 851 shields light. That is, the output light of the LED module 110 is emitted out of the case 140 in the direction indicated by the arrow in FIG. 11 on the side (in the direction orthogonal to the X axis). On the other hand, as shown in FIG. 10, since no slit is provided on the X-axis side of the light shielding cover member 850, the output light of the LED module 110 is not emitted forward (in the X-axis direction). With such a configuration, the output light can be shaded to produce an illumination effect. Note that the number, shape, arrangement, and the like of the slits 851 are not limited to the above. Further, by making the emission colors of the LED modules 110 different, it is possible to produce a colorful lighting effect with light and shade.

[Ninth Embodiment]
FIG. 12 is a longitudinal sectional view showing a lamp according to the ninth embodiment, and FIG. 13 is a sectional view taken along line AA of FIG. 12 showing the lamp according to the ninth embodiment. . As shown in FIG. 12, the lamp 900 according to the ninth embodiment includes a light shielding plate on the front surface of the cover material 945, in that the case 940 is small in the direction orthogonal to the X axis, the direction of the LED module 110 is different. The point that 950 is attached is different from the lamp 100 according to the first embodiment. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

  The case 940 is provided with a base attachment portion 942 to which the base 130 is attached, a mounting portion 943 on which the LED module 110 and the lighting unit 120 are mounted, and a partition wall portion 944 that partitions the internal space of the case 940. In addition, the cover member 945 is attached so as to cover the LED module 110 and the lighting unit 120, and the dimension L10 in the direction orthogonal to the X axis is 50 to 80 mm, and according to the first embodiment. It is smaller than the lamp 100 in the direction orthogonal to the X axis.

  The case main body 941 has a hole portion 941a and a recessed portion 941b, and has substantially the same configuration as the case main body 141 according to the first embodiment except for dimensions in a direction orthogonal to the X axis. The base attachment portion 942 has a configuration substantially similar to that of the base attachment portion 142 according to the first embodiment. The mounting portion 943 has a wiring pattern 943a, and has substantially the same configuration as the mounting portion 143 according to the first embodiment except for the dimension in the direction orthogonal to the X axis.

The partition wall portion 944 is a cylinder having a quadrangular cross section that is erected substantially at the center of the surface on the X-axis side of the mounting portion 943, and is a space inside the case 940 surrounded by the case main body 941 and the cover material 945. Is partitioned into a circuit housing chamber 946 and a light source housing chamber 947.
On the four rectangular planes constituting the outer peripheral surface of the partition wall portion 944, the LED modules 110 are respectively arranged such that the main light emission direction is perpendicular to the X axis. Since the LED module 110 has such an orientation, it is not necessary to secure a wide mounting surface for mounting the LED module 110 on the mounting portion 943. Therefore, the light source housing chamber 947 can be reduced in the direction orthogonal to the X axis, and the lamp 900 can be reduced in size in the direction orthogonal to the X axis. Since the lamp 900 is small, it is possible to secure a wider indoor space, save resources, and reduce industrial waste.

The inner end of the partition wall portion 944 on the X axis + side is slightly smaller in inner diameter, and the portion serves as a circuit mounting portion 944 a for mounting the lighting unit 120. The lighting unit 120 is mounted on the case main body 941 so that the substrate 123 is placed on the circuit mounting portion 944a.
The circuit housing chamber 946 is a space for housing the lighting unit 120, and the light source housing chamber 947 is a space for housing the LED module 110. The circuit housing chamber 946 exists at a position facing the base 130, and the light source housing chamber 947 exists in a direction orthogonal to the X axis of the circuit housing chamber 946 so as to surround the circuit housing chamber 946.

  The cover material 945 is a petri dish composed of a cylindrical side surface portion 945a and a disk-shaped front surface portion 945b that closes one opening of the side surface portion 945a, and the dimension in the X-axis direction is 20 to 50 mm. The dimension in the direction orthogonal to the axis is 50 to 80 mm which is the same as the dimension in the direction orthogonal to the X axis of the lamp 900. The cover member 945 has a case mounted by a known mounting method such as an adhesive, a screw, or a locking claw so that the end surface on the X axis + side of the side surface portion 945a abuts on the surface on the X axis − side of the case body 941. Attached to the main body 941.

  The cover material 945 is made of a translucent material such as translucent resin or glass, for example, and includes a cylindrical side surface portion 945a and a disk-shaped front surface portion 945b that closes one opening of the side surface portion 945a. This is a petri dish shape. A circular light shielding plate 950 made of a non-translucent material such as a colored resin, metal, timber, glass fiber, or a composite thereof is attached to the surface on the X-axis side of the front surface portion 945b.

  The output light of the LED module 110 is emitted from the side surface portion 945a of the cover material 945 in a direction orthogonal to the X axis. On the other hand, the output light of the LED module 110 is not emitted from the front surface portion 945b of the cover material 945 in the X-axis direction due to the presence of the light shielding plate 950. Thus, since the lamp 900 has a structure in which light is extracted from the side (direction of the side surface portion 945a) and light is not extracted from the front (direction of the light shielding plate 950), the lamp 900 is used for a toilet, a washroom, or a bathroom. Useful as indirect lighting. Moreover, since the inside of the case 940 is difficult to visually recognize from the outside, the appearance is excellent. Note that a configuration in which light leaks somewhat from the front surface portion 945b may be used.

[Tenth embodiment]
FIG. 14 is a view for explaining the arrangement of the LED modules of the lamp according to the tenth embodiment. As shown in FIG. 14, the lamp 1000 according to the tenth embodiment is different from the lamp 100 according to the ninth embodiment in that the cross-sectional shape of the partition wall portion 1044 is a triangle. In the following, differences from the ninth embodiment will be mainly described, and the same points as in the first embodiment will be omitted to avoid duplication. The same constituent elements are denoted by the same reference numerals.

The partition wall portion 1044 according to the tenth embodiment is a cylindrical shape having a triangular cross-section, which is erected substantially at the center of the surface on the X axis side of the mounting portion 1043, and is surrounded by the case main body 941 and the cover material 945. The space inside the case 940 is partitioned into a circuit housing chamber 1046 and a light source housing chamber 1047.
In the three rectangular planes constituting the outer peripheral surface of the partition wall 1044, the LED module 110 and the substrate 111 of the LED module 110 are arranged such that the main light emitting direction is a direction perpendicular to the X axis. The LED modules 110 are connected in series via a wiring pattern 1043a formed on the mounting portion 1043. Thus, by making the partition wall 1044 into a triangular cross section, the number of LED modules 110 can be reduced, and cost reduction can be realized.

  Further, since the LED module 110 is in such a direction, it is not necessary to secure a wide mounting surface for mounting the LED module 110 on the mounting portion 943. Therefore, the light source accommodation chamber 947 can be reduced in the direction orthogonal to the X axis, and the lamp 1000 can be reduced in size in the direction orthogonal to the X axis. Since the lamp 900 is small, it is possible to secure a wider indoor space, save resources, and reduce industrial waste.

The end on the X axis + side of the partition wall portion 1044 has a slightly smaller inner diameter, and that portion serves as a circuit placement portion 1044a for placing the lighting unit 120 thereon. The lighting unit 120 is mounted on the case main body 941 so that the substrate 123 is placed on the circuit mounting portion 1044a.
[Eleventh embodiment]
FIG. 15 is a view for explaining the arrangement of the LED modules of the lamp according to the eleventh embodiment. As shown in FIG. 15, the lamp 1100 according to the eleventh embodiment is characterized in that the cross-sectional shape of the partition wall portion 1144 is hexagonal, and that the LED module 110 is also mounted on the outer peripheral surface of the partition wall portion 1144. Different from the lamp 100 according to the first embodiment. In the following, differences from the first embodiment will be mainly described, and the same points as in the first embodiment will not be described in order to avoid duplication. The same constituent elements are denoted by the same reference numerals.

The partition wall portion 1144 according to the eleventh embodiment is a cylindrical shape having a hexagonal cross section that is erected substantially at the center of the X-axis-side surface of the mounting portion 1143, and includes a case main body 141 and a cover material 145. A space inside the enclosed case 140 is partitioned into a circuit housing chamber 1146 and a light source housing chamber 1147.
In the light source accommodation chamber 1147, six LED modules 110 are mounted on the mounting surface (surface on the X axis + side) of the mounting portion 1143 so as to surround the lighting unit 120, and these LED modules 110 are mounted on the mounting portion. They are connected in series via a wiring pattern 1143 a formed on 1143. In addition, each of the six rectangular planes constituting the outer peripheral surface of the partition wall portion 1144 also has the LED modules 110 and the LED modules 110 so that the main light emitting direction is perpendicular to the X axis. The LED modules 110 are mounted in parallel with the substrate 111, and are connected in series via a wiring pattern (not shown) formed in the mounting portion 1043.

  In this manner, by mounting the LED modules 110 on both the mounting surface of the mounting portion 1143 and the outer peripheral surface of the partition wall portion 1144, more LED modules 110 can be mounted on the case body 141. Therefore, a brighter lamp 1100 can be obtained. In addition, since the LED module 110 whose main light emission direction is the X axis-side direction and the LED module 110 whose main light emission direction is a direction orthogonal to the X axis, the front (X The lamp 1100 can be brighter in the (axis-side direction) and side direction (direction perpendicular to the X axis).

[Modification]
While the lamp according to the present invention has been specifically described above based on the embodiments, the lamp according to the present invention is not limited to the above-described embodiments. For example, the following modifications can be considered.
<Solid-state light emitting device>
The solid state light emitting device according to the present invention is not limited to an LED device, and may be a semiconductor laser diode, an electroluminescent device or the like. Further, the emission color of the solid state light emitting element is not limited to white, and any emission color can be adopted. Furthermore, the number of solid-state light emitting elements may be any number that can be disposed so as to surround the lighting unit, and specifically, it may be two or more.

<Arrangement of solid state light emitting device and lighting unit>
The arrangement of the solid state light emitting device and the lighting unit according to the present invention is such that the plurality of solid state light emitting devices are arranged so as to surround the lighting unit in a direction intersecting the screwing axis direction of the E-shaped base with respect to the lighting unit. That's fine. For example, a plurality of solid state light emitting elements may be arranged in a circular or polygonal ring so as to surround the lighting unit. In addition, the positional relationship in the screwing axis direction of the E-shaped base between the solid-state light emitting element and the lighting unit is sufficient as long as at least a part of the solid-state light-emitting element overlaps the lighting unit. The dimension in the screwing axial direction can be reduced. When the edge of each solid state light emitting element on the side opposite to the E type base is positioned on the E type base side of the end of the lighting unit opposite to the E type base, the solid state light emitting element Therefore, it is possible to completely prevent the size of the lamp from increasing in the screwing axial direction of the E-shaped base. Furthermore, if it is set as the structure by which a part of lighting unit is included in the inside of a nozzle | cap | die, the dimension in the screwing axial direction of the E-shaped nozzle | cap | die of a lamp | ramp can be made smaller.

<Case>
The configuration and form of the case according to the present invention is not limited to the above, and in the case, a plurality of solid state light emitting elements can be arranged so as to surround the lighting unit in a direction intersecting the screwing axis of the E-shaped base. I just need it. Therefore, for example, the external shape of the case is not limited to the shape in which the base protrudes from the cylinder, as long as the dimension of the lamp in the screwing axial direction is shortened. There may be.

<Others>
The lamp according to the present invention may have a configuration in which a part of the configuration of the lamp according to the above-described embodiment and modification is combined.

  The lamp according to the present invention can be widely used in general lighting applications.

100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100 Lamp 110 Solid state light emitting device 120 Lighting unit 130 E-shaped base 140 Case 141 Case body 145 Cover material 146 Circuit housing chamber 147 Light source housing chamber 145 Cover material 250 Light diffusion layer 750 Spacer

Claims (6)

A heat sink, a plurality of solid state light emitting elements as light sources mounted on the heat sink, a lighting unit that lights the solid state light emitting elements, and a cover material that covers the plurality of solid state light emitting elements ,
The heat sink is provided with a through hole, the lighting unit is disposed in the through hole and the cover material, and the plurality of solid state light emitting elements surround the lighting unit. A lamp characterized by being arranged. 2. The lamp according to claim 1, wherein the lighting unit includes a plurality of electronic components, a part of the electronic components is disposed in the through hole, and the rest is disposed in the cover material.   The lamp according to claim 1, further comprising a partition wall partitioning a space in which the lighting unit is accommodated and a space in which the solid state light emitting element is accommodated. And a base electrically connected to the lighting unit, wherein the plurality of solid state light emitting elements surround the lighting unit in a direction intersecting a screwing axis of the base with respect to the lighting unit. The lamp according to any one of claims 1 to 3, wherein the lamp is arranged. Wherein the plurality of solid state light emitters according to claim 4, characterized in that it is arranged so as to surround the periphery of the lighting unit in a direction perpendicular to the previous SL ferrule screwing axis of to the lighting unit lamp. 6. The lamp according to claim 4, wherein each of the individual light emitting elements is disposed in a state in which a main emission direction is directed in a direction opposite to a screwing direction of the base.

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