JP6497015B2 - Lighting lamp and lighting device - Google Patents

Description

  The present invention relates to an illumination lamp, and more particularly, to a light bulb shaped illumination lamp configured to spread light distribution, and an illumination device using the light bulb shaped illumination lamp.

  In recent years, in place of conventionally used lighting lamps such as incandescent bulbs and fluorescent lamps, LED lighting lamps having LEDs having characteristics such as low power consumption and long life as a light source have been widely used. Various techniques relating to an illumination lamp have been disclosed (see, for example, Patent Document 1).

JP 2010-205553 A

  In Patent Document 1, in an illuminating device including a directional light source and a translucent container that houses the light source and transmits light from the light source, at least a part of the light emitted from the light source is provided. In order to broaden the light distribution, an illuminating device including a reflector that reflects inside the translucent container is disclosed.

  However, it has a configuration in which a plurality of components are combined to provide a reflector inside the translucent container, and the structure is complicated, and it has also been a factor that hinders downsizing and weight reduction of the lighting device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illumination lamp capable of spreading light distribution with a simple configuration and maintaining a small size and light weight.

The illumination lamp which concerns on 1 aspect of this invention is the upper end arrange | positioned on the 1st housing | casing part so that the cylindrical 1st housing | casing part and the upper edge part of a 1st housing | casing part may be exposed. A cone-shaped second housing part whose outer diameter dimension is smaller than the outer diameter dimension of the lower end part, a light source part disposed on the second housing part, and covering the second housing part and the light source part And a translucent cover disposed along the end portion, and an inner space formed so as to communicate with the inside of the first housing portion and the second housing portion, and fastened to the second housing portion And a lighting device housed in an insulating housing in contact with the fastening mechanism, and the light source part is formed by connecting the top part and the end part of the cover. It is arrange | positioned on the 2nd housing | casing part so that it may be accommodated in the cone-shaped space.

  Since the illumination lamp according to one aspect of the present invention is configured as described above, it is possible to provide an illumination lamp that can spread light distribution with a simple configuration and can maintain a small size and light weight.

The perspective view which shows the main structures of the illumination lamp which concerns on Embodiment 1 of this invention. The perspective view of the cover which concerns on Embodiment 1 of this invention. The side view of the lighting device which concerns on Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Front view sectional drawing which shows the main structures of the illumination lamp which concerns on Embodiment 1 of this invention. Side surface sectional drawing which shows the main structures of the illumination lamp which concerns on Embodiment 1 of this invention. BB sectional drawing in FIGS. The partial expanded sectional view of the H1 part and H2 part in FIG. The figure explaining the whole 1st characteristic of the illumination lamp which concerns on Embodiment 1 of this invention. The figure explaining the detail of the 1st characteristic and effect of this invention. Sectional drawing explaining the 2nd characteristic of the illumination lamp which concerns on Embodiment 1 of this invention. Sectional drawing which shows an example of the conventional illumination lamp. Sectional drawing which shows another example of the conventional illumination lamp. Sectional drawing which shows another example of the conventional illumination lamp The figure explaining the 3rd characteristic of the illumination lamp which concerns on Embodiment 1 of this invention. Sectional drawing which shows the main structures of the conventional illumination lamp. Sectional drawing explaining the structure of the illumination lamp which concerns on a 1st modification. Sectional drawing explaining the structure of the illumination lamp which concerns on a 2nd modification. Sectional drawing explaining the structure of the illumination lamp which concerns on a 3rd modification. Sectional drawing explaining the structure of the illumination lamp which concerns on a 4th modification. Sectional drawing explaining the structure of the illumination lamp which concerns on a 5th modification. Side surface sectional drawing explaining the structure of the housing | casing part which concerns on a 5th modification. The expansion perspective view explaining the structure of the resin housing | casing which concerns on a 5th modification. Sectional drawing which shows the structure of the illuminating device to which the illumination lamp concerning Embodiment 1 was applied.

Lighting lamp according to one aspect of the present invention includes a first housing portion cylindrical, disposed on the first housing portion so as to expose the end portion of the upper side of the first housing portion, A cone-shaped second housing part whose outer diameter dimension at the upper end is smaller than the outer diameter dimension at the lower end part, a light source part disposed on the second housing part , and along the end part so as to cover the light source part A light-transmitting cover, and the light source part is arranged on the second housing part so as to be accommodated in a conical space formed by connecting the top part and the end part of the cover. Has been.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a main configuration of an illumination lamp according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the cover according to Embodiment 1 of the present invention. FIG. 3 is a side view of the lighting device according to Embodiment 1 of the present invention. FIG. 4 is a front sectional view showing the main configuration of the illumination lamp according to Embodiment 1 of the present invention, and is a sectional view taken along the line CC in FIG. 5 is a cross-sectional side view showing the main configuration of the illumination lamp according to Embodiment 1 of the present invention, and is a cross-sectional view taken along line AA in FIG. 6 is a cross-sectional view taken along the line BB in FIGS. FIG. 7 is a partially enlarged cross-sectional view of a portion H1 and a portion H2 in FIG.
The lighting device 5 in FIGS. 4 to 7 shows only the lighting circuit board 500 necessary for the description.

As shown in FIGS. 1 and 4 to 6, the illumination lamp 100 according to Embodiment 1 includes a light source unit 1, a cover 2, a housing unit 3, a base 4, and a lighting device 5 housed in the housing unit. It is a light bulb shaped illumination lamp.
In the first embodiment, the light source unit 1 includes a light emitting diode (LED) element 10 that is a light source and an LED substrate 11 on which the LED element 10 is mounted. The LED substrate 11 has a disk shape, and is arranged so that the plate surface is orthogonal to the axial direction of the illumination lamp 100. The LED substrate 11 has an LED mounting portion 113 on one side on which the LED elements are mounted, and a metal casing mounting portion 114 that is mounted on a metal casing 31 to be described later on the other side facing the LED mounting section. In the LED mounting portion 113 of the LED substrate 11, a plurality of LED elements 10 are mounted on a circumference concentric with the outer periphery of the LED substrate 11. The shape and dimensions of the LED substrate 11, the number of LED elements 10, the arrangement position, and the like are appropriately determined according to the design specifications of the illumination lamp 100.

  The LED substrate 11 has a first through hole 110 and a second through hole 111 provided at a predetermined interval, and a third through hole 112 for allowing a wiring member (not shown) such as a wire harness to pass therethrough. A screw 9 used to attach the light source unit 1 to the housing unit 3 is inserted into the first through hole 110 and the second through hole 111.

  The first through-hole 110 and the second through-hole 111 of the LED substrate 11 are predetermined so as to communicate with the first through-hole 310 and the second through-hole 311 provided in the light source mounting portion 313 of the metal casing 31 described later. And are further communicated with screw holes of a first boss 303 and a second boss 304 provided in a resin casing 30 to be described later. The light source unit 1 is attached to the light source attachment unit 313 using two screws 9 that are inserted into the first through hole 310 and the second through hole 311 that communicate with each other and screwed into the screw holes. Note that the number of screws is not limited to two, and the LED substrate 11, the metal casing 31, and the resin casing 30 may be fixed to each other.

In addition to the LED element 10 and the LED substrate 11, the light source unit 1 is transmitted to the light source unit 1 from the lighting device 5 with lighting power for being connected to the lighting device 5 and lighting the LED element 10. Wiring members (not shown) such as a wire harness and a connector, and electronic components required according to the design specifications of the illumination lamp 100 are included.
In illumination lamp 100 in the present embodiment, an element other than an LED element may be used as a light source. As an element other than the LED element used as the light source, for example, there are a laser diode (Laser Diode), an organic EL (Organic Electro-Luminescence), etc., and other elements may be used as long as they emit light. .
Further, depending on the area of the LED substrate 11 and the arrangement and number of LED elements 10 mounted on the LED substrate 11, it may be difficult to provide a through hole in the LED substrate 11. In such a case, the light source part 1 may be attached to the light source attachment part 313 of the metal housing 31 (described later) using an adhesive member such as a double-sided tape in addition to the screw.

The cover 2 is made of a translucent material (for example, glass or resin) that transmits light emitted from the LED element 10, and is attached to the metal casing 31 so as to cover the light emission side of the light source unit 1. Yes. When the cover 2 is made of resin, for example, polycarbonate or acrylic is used according to the product specifications. As shown in FIG. 2, the cover 2 according to the present embodiment has a curved outer shape and a hemispherical shape as a whole. And the opening end part 22 of the cover 2 is attached to the cover attachment part 314 provided in the largest outer diameter part 31s1 of the metal housing | casing 31 mentioned later. The cover 2 has a distance L3 (depth dimension) from the open end 22 to the top b.
The cover 2 has translucency (property of transmitting light), transmits light emitted from the light source unit 1, and diffuses, reflects, condenses, and reflects light according to the specifications of the illumination lamp 100. , May have a function of scattering. These functions may be directly formed on the base material itself when the cover 2 is formed using a base material such as glass or resin as a diffusion layer (or surface), a reflection layer (or surface), and a lens. And it is good also as a structure attached in combination with another member which has these functions on the surface of a base material.
As a function of the cover 2, the direction of light emitted from the cover outer surface portion 20 is adjusted so as to depend on the direction of light incident on the cover inner surface portion 21.

The casing unit 3 includes a resin casing 30 in which the lighting device 5 is housed, and a metal casing 31 attached so as to cover the outer periphery of the resin casing 30.
The resin casing 30 has electrical insulation and is formed using a resin material such as acrylic or polycarbonate, ceramic, or the like. The resin housing 30 has a cylindrical shape, a metal housing mounting portion 306A in which the metal housing 31 is mounted on the cylindrical outer peripheral portion, a base mounting portion 306B in which the base 4 can be mounted on the cylindrical outer peripheral portion, It is comprised with the 3rd cone-shaped part 307 which connects both.

  The resin casing 30 has a storage space so that the lighting device 5 can be stored therein, and openings are formed on the light source unit 1 side and the base 4 side. The storage space is located between the first storage space on the light source unit 1 side having a large inner diameter, the second storage space on the base 4 side whose inner diameter is smaller than the inner diameter of the first storage space, and connects these two spaces. The lighting device 5 is inserted from the opening on the light source unit 1 side, which is configured from the conical third storage space and has a large diameter. The first storage space is covered by a metal housing attachment portion 306A, the second storage space is covered by a base attachment portion 306B, and the third storage space is covered by a third conical portion 307.

  A first boss 303 and a second boss 304 are formed in the opening of the resin casing 30 on the light source unit 1 side so as to project from the resin casing inner peripheral surface section 300 toward the central axis of the resin casing 30. Yes. The first boss 303 and the second boss 304 are provided at two positions facing each other across the central axis of the resin casing 30 at a position 180 degrees apart in the circumferential direction of the resin casing 30. The central axis of the resin casing 30 overlaps the central axis O of the illumination lamp 100. Screws 9 for fixing the LED substrate 11 and the metal casing 31 to the resin casing 30 are screwed into screw holes (not shown) provided in the central axes of the first boss 303 and the second boss 304. . As a fastening member for fastening and fixing them, a rivet, a press-fitting bolt, or the like may be used in addition to the screw 9, and in this case, the shape of a screw hole (not shown) is appropriately changed to the first. A boss 303 and a second boss 304 are formed. The first boss 303 and the second boss 304 extend to the third conical portion 307 in parallel with the central axis of the resin casing 30 to form the first rib 301 and the second rib 302, thereby reinforcing the resin casing 30. In addition, the deformation is suppressed.

As shown in FIGS. 5 to 7, the lighting device 5 includes at least part of the long side edge portion of the lighting circuit board 500, the first boss 303 and the second boss 304, or the first rib 301 and the second edge. The rib 302 is held in the resin casing 30 in contact with the rib 302. The lighting circuit board 500 includes a wide portion corresponding to the shape of the first storage space of the resin housing 30, a narrow portion corresponding to the shape of the second storage space of the resin housing 30, and a third storage of the resin housing 30. Corresponding to the shape of the space, it has a tapered portion that connects the wide portion and the narrow portion.
In addition, the resin casing 30 may be provided with a groove (not shown) in the resin casing outer peripheral surface portion 306 facing the first rib 301 and the second rib 302 in order to perform molding appropriately.

The lighting device 5 includes a plurality of lighting circuit components 50 mounted on the lighting circuit board 500 and is inserted into the resin casing 30 from the light source unit 1 side of the resin casing 30. At least a part of the long side edge of the lighting circuit board 500 includes the first boss 303 constituting the first contact portion 80, the first rib 301, the second boss 304 constituting the second contact portion 81, Abuts on the second rib 302. Then, at least a part of the long side edge portion of the lighting circuit board 500 is in contact with the resin casing inner peripheral surface portion 300 constituting the third contact portion 82 and the fourth contact portion 83.
As described above, in the illumination lamp 100 according to the first embodiment, the screws that are provided inside the resin casing 30 and are used when the LED substrate 11, the resin casing 30, and the metal casing 31 are fixed (fastened) to each other. The first boss 303 and the second boss 304 into which the screw 9 is screwed are also formed to hold the lighting circuit board 500. In addition, the lighting circuit board 500 is held by the four contact portions of the first contact portion 80, the second contact portion 81, the third contact portion 82, and the fourth contact portion 83 described above. It should be noted that as long as the lighting circuit board 500 is stably held in the resin casing 30, all of the four abutting parts do not necessarily have to abut on the long edge of the lighting circuit board 500.

The base 4 is fitted to the base mounting portion 306 </ b> B of the resin housing 30, and is connected to the lighting device 5 and a clamping portion 40 that clamps and fixes a first power supply line (not shown) connected to the lighting device 5. And a center electrode 41 for fixing a second feeder line (not shown).
The base 4 has a structure that is screwed onto a lamp socket 160 provided in the illumination device 150 (see, for example, FIG. 23). The base 4 is an input terminal for inputting power supplied from a commercial power source or the like to the illumination lamp 100 via the illumination device 150.

  The metal casing 31 is integrally formed in a bottomed cylindrical shape using a metal material (for example, aluminum) having thermal conductivity. On the outer surface side of the bottom portion, a flat surface is formed as a light source attachment portion 313 to which the light source portion 1 (LED substrate 11) is attached, and the inner surface side of the bottom surface portion facing the outer surface side of the metal housing 31 is cut. The bottomed cylindrical concave shape is removed.

  In the present embodiment, the metal casing 31 is integrally formed with a first casing section 318 disposed on the base 4 side and a second casing section 317 disposed on the light source section 1 side. . In the metal casing 31, the second casing section 317 is arranged at the end section of the first casing section 318 on the light source section 1 side so as to expose the end section of the first casing section 318 on the light source section 1 side. ing. The end of the first housing portion 318 on the light source unit 1 side is a maximum outer diameter portion 31 s 1 having the maximum outer diameter dimension R 1 of the metal housing 31. The first housing portion 318 is formed in a conical shape whose end on the base 4 side has an outer diameter smaller than the outer diameter R1. And the 2nd housing | casing part 317 is formed in the cone shape whose edge part by the side of the light source part 1 is the outer diameter R2 smaller than outer diameter R1.

  In other words, the shape of the cylindrical outer peripheral portion of the metal casing 31 is gradually maintained while maintaining a circular cross-sectional shape toward the light source unit 1 side, in which circular bottom surfaces sharing the maximum outer diameter R1 are overlapped. The first conical portion 317s with a smaller outer diameter and the second conical portion 318s with a gradually decreasing outer diameter while maintaining a circular cross-sectional shape toward the opening end 31B on the base 4 side. It is a combined shape. That is, the diameter dimension R2 of the light source mounting portion 313 is smaller than the maximum outer diameter dimension R1 of the metal casing 31. And the diameter dimension (R4 of FIG. 8) of the LED board 11 attached to the light source attachment part 313 is smaller than the diameter dimension R2 of the light source attachment part 313.

  Preferably, the surface of the light source mounting portion 313 and the first conical portion 317s of the second housing portion 317 and the LED mounting portion 113 of the LED substrate 11 are provided with a reflection member or a diffusion member that promotes reflection or diffusion of light. Processing to lay is performed.

  The metal casing attachment portion 306A of the resin casing 30 is inserted into the recess of the metal casing 31 from the opening side. The resin casing 30 is inserted into the metal casing 31, and the lighting device 5 is stored in a space formed by the resin casing 30 and the metal casing 31. A wiring material (not shown) such as a wire harness for electrically connecting the lighting device 5 housed in the resin housing 30 and the light source unit 1 is provided on the light source mounting portion 313 of the metal housing 31. A third through hole 312 is provided for passage.

  Further, the light source mounting portion 313 of the metal housing 31 is provided with a first through hole 310 and a second through hole 311 at positions corresponding to the first boss 303 and the second boss 304 of the resin housing 30, respectively. ing. One of the two screws 9 is inserted into the first through hole 110 of the LED substrate 11 that penetrates and the first through hole 310 of the metal housing 31 and screwed into the first boss 303, and the other of the screws 9 is penetrated. The LED substrate 11, the resin housing 30, and the metal housing 31 can be fixed by being inserted into the second through-hole 111 and the second through-hole 311 of the metal housing 31 and screwed into the second boss 304. it can.

  Further, a resin lid (not shown) may be provided between the lighting device 5 and the metal housing 31, and the lighting device 5 is accommodated in a space formed by the resin housing 30 and the metal housing 31. In this case, the lighting device 5 can be prevented from wobbling in the insertion direction. A resin lid (not shown) is inserted into the inside of the resin casing 30 from the opening side of the resin casing 30 on the light source section 1 side, or is flush with the opening end 30A of the resin casing 30 on the light source section 1 side. Or the like so as to close the opening of the resin casing 30 on the light source unit 1 side. A wiring tube portion (not shown) of the resin lid (not shown) is fitted into the third through hole 312 provided in the light source mounting portion 313 of the metal housing 31 and is housed inside the resin housing 30. A wiring member (not shown) such as a wire harness for electrically connecting the lighting device 5 and the light source unit 1 passes through the inside of the wiring tube part (not shown).

A cover mounting portion 314 is formed over the entire circumference of the maximum outer diameter portion 31s1 having the maximum outer diameter dimension R1 of the metal casing 31, and the light source portion 1, the light source mounting portion 313, and the second portion. The cover 2 is attached so as to cover the housing portion 317 (first conical portion 317s). Thus, the cover 2, the casing 3 (the resin casing 30, the metal casing 31), and the base 4 have a light bulb shape as a whole.
Since the metal casing 31 having such a complicated shape is integrally formed, the manufacturing process is simple and can be manufactured at low cost.
In addition, although the housing | casing part 3 which concerns on this Embodiment has illustrated the example of a cylindrical shape, it is not limited to this.

  The first housing portion 318 (second conical portion 318s) of the metal housing 31 shown in FIGS. 1 to 7 maintains a circular cross-sectional shape toward the opening end portion 31B on the base 4 side, The outer diameter dimension is drawn so as to be gradually reduced substantially linearly, but is not limited thereto. In other words, the outer peripheral portion of the first housing portion 318 (second conical portion 318s) may be a convex curved surface slightly bulging outward or a concave curved surface slightly recessed inward. Further, it may be a compound curved surface combining a convex curved surface and a concave curved surface.

The lighting device 5 is configured by mounting a lighting circuit component 50 on a lighting circuit board 500. The lighting device 5 includes a lighting circuit component 50 and includes an AC-DC converter circuit (not shown) that converts AC power supplied from a commercial power source or the like into DC power that drives the LED element 10. That is, the lighting device 5 converts the commercial power input from the base 4 into driving power for driving the LED element 10 and supplies it to the LED element 10.
The lighting circuit component 50 includes a switching element such as an FET, a rectifier diode that rectifies AC power supplied from a commercial power source, a capacitor that smoothes a pulsating flow, a control IC that controls driving of the switching element, and the like.
Preferably, the lighting device 5 has a load fluctuation detection function, a control function for controlling the drive current output from the AC-DC converter circuit in accordance with the load fluctuation, and commercial power in order to drive the LED element 10 stably. It further has a filter function for removing or reducing noise flowing in and / or out through the supply path.

  As shown in FIGS. 5-7, the 1st contact part 580 of the lighting circuit board 500 contact | abuts with the 1st contact part 380 of the 1st boss | hub 303 (1st contact part 80). The second contact portion 581 of the lighting circuit board 500 contacts the second contact portion 381 of the second boss 304 (second contact portion 81). The third contact portion 582 of the lighting circuit board 500 is in contact with a third contact portion 382 that is the resin casing inner peripheral surface portion 300 in the vicinity of the first contact portion 380 of the first boss 303 (third contact portion 82). ). The fourth contact portion 583 of the lighting circuit board 500 contacts the fourth contact portion 383 which is the resin casing inner peripheral surface portion 300 in the vicinity of the fourth contact portion 383 of the second boss 304 (fourth contact portion 83). ). Thus, the four abutting portions of the lighting circuit board 500 are the four abutting portions of the resin casing 30, that is, the two abutting portions of the resin casing inner peripheral surface portion 300, the first boss 303 and the second boss. By being in contact with each of the contact portions with 304, the resin housing 30 is held.

  Except for the first contact part 80, the second contact part 81, the third contact part 82, and the fourth contact part 83, the resin casing inner peripheral surface part 300, the lighting circuit board 500, and the lighting circuit board are provided. A predetermined space is provided between the lighting circuit component 50 and the lighting circuit component 50 mounted on the lighting device 500, and the lighting device 5 is disposed so that mechanical stress (stress) is not applied to the lighting circuit substrate 500 and the lighting circuit component 50. Yes.

As described above, the illumination lamp 100 according to the present embodiment combines the structure for holding the lighting device 5 (lighting circuit board 500) and the structure for fixing the light source 1 (light source board 11). The resin housing 30 of the housing portion 3 can be configured simply.
That is, since a complicated holding structure is not required on the inner surface of the resin casing 30, the long lighting device 5 (lighting circuit board 500) is stably held in the long and narrow internal space of the resin casing 30. This structure is suitable.

The assembly of the illumination lamp 100 according to the present embodiment will be described.
The lighting device 5 is inserted into the resin housing 30, the base 4 is fitted into the resin housing 30, and the lighting device 5 is connected to the lighting device 5 using a first power supply line (not shown) and a second power supply line (not shown). The base 4 is electrically connected to fix the lighting circuit board 500.
Thereafter, the holes (first through-holes 110 and 310, second through-holes 111 and 311) between the LED substrate 11 and the metal housing 31 that communicate the screw 9 with the first boss 303 and the second boss 304 of the resin housing 30. ) And screwed into the first boss 303 and the second boss 304, the LED substrate 11, the resin casing 30, and the metal casing 31 are fixed to each other.
Then, the cover 2 is attached to the cover attachment portion 314 of the metal housing 31 so as to cover the LED substrate 11 on which the LED element 10 as the light emitting means is mounted and the second housing portion 317 (first conical portion 317s). It is attached. The illumination lamp 100 is assembled in this way.

  As described above, the illumination lamp 100 according to the present embodiment uses the integrally formed metal casing 31 and the resin casing 30 that combines the structure for holding the lighting device 5 and the structure for fixing the light source 1. As a result, the assembly process of the illumination lamp 100 is also simplified. For this reason, manufacturing cost can be reduced.

  Note that, for the purpose of mechanically fixing the lighting device 5 or radiating and radiating operating heat generated by the lighting device 5, a heat conductive material is provided in the gap between the resin casing inner peripheral surface 300 and the lighting device 5 in the resin casing 30. A filling member (not shown) or the like may be filled. As a result, it is possible to prevent the lighting device 5 from rattling in the resin casing 30 and to improve the operation quality of the lighting device 5.

(First feature and effect)
Next, the first feature and effect of the present invention will be described with reference to FIGS. FIG. 8 is a diagram for explaining the entire first feature of the illumination lamp according to Embodiment 1 of the present invention. FIG. 9 is a diagram for explaining details of the first feature and effect of the present invention.

As shown in FIGS. 8 and 9, the point a is the center point of the LED substrate 11, the point b is the apex (top) of the cover inner surface portion 21 of the cover 2, and both are the central axes O (one point) of the illumination lamp 100. This is a point that intersects with a chain line.
As described above, the LED substrate 11 has a disk shape. The light source mounting portion 313 has a circular shape, and the maximum outer diameter portion 31s1 of the second housing portion 317 (first conical portion 317s) (that is, the maximum outer diameter portion 31s1 of the metal housing 31) is the illumination lamp 100. The cross-sectional shape orthogonal to the central axis O is a circular shape. The maximum outer diameter portion 31s1 (that is, the maximum outer diameter portion 31s1 of the metal casing 31) of the second housing portion 317 (first conical portion 317s) is the maximum outer diameter portion of the illumination lamp 100.

Point c is the outer peripheral edge of the LED substrate 11, point d is the outer peripheral edge of the light source mounting portion 313, point e is the maximum outer diameter portion of the first conical portion 317, and point F is the maximum of the metal housing 31. Each point of the outer diameter portion 31s1 on the cross-sectional view is shown, and the points c, d, e, and f form peripheral portions that are continuous in the circumferential direction.
A dotted line ss connecting the point b and the point f on the cross-sectional view has an angle θ1 with the central axis O (one-dot chain line) of the illumination lamp 100, and is continuously dotted in the circumferential direction. A conical virtual side surface portion having B as an apex is formed (the side surface portion of the conical space g in FIG. 1).

  The illumination lamp 100 according to Embodiment 1 has a circular light source mounting portion 313 having a maximum outer diameter portion 31s1 having a circular shape with a diameter R1 (having the largest outer diameter size) and a diameter R2 smaller than R1. However, it is formed by shifting L2 toward the top b side of the cover 2 with the maximum outer diameter portion 31s1 as a reference, and the LED substrate 11 on which the LED element 10 is mounted is attached to the light source attachment portion 313. At this time, the distance (minimum dimension) between the light source mounting portion 313 and the top portion b is L1.

At this time, a point d, which is one point on the cross-sectional view of the outer peripheral edge of the light source mounting portion 313, is located on the dotted line s-s. That is, the peripheral edge part that continues in the circumferential direction of the light source attachment part 313 is located on a conical virtual side surface that includes a dotted line ss with the apex b as a vertex.
A point c, which is one point on the cross-sectional view of the outer peripheral edge of the LED substrate 11, is located on the dotted line ss. In other words, the peripheral edge that is continuous in the circumferential direction of the LED substrate 11 is located on the virtual side of the cone including the dotted line s-s with the apex b as the apex.

As an example of diffused light or reflected light diffused or reflected by the cover 2, the light emitted from the LED element 10 is a part of the light emitted from the top b of the cover inner surface portion 21 to the base 4 side. Is emitted from the illumination lamp 100 to a region closer to the base 4 than the LED element 10 through the path of the top b → point c → point d → point e → point f (emitted in the direction of arrow x in FIG. 8). ). That is, the theoretical light irradiation angle in this embodiment is
360- (2 * θ1) [degree] (1)
Defined by

In this way, by configuring the illumination lamp 100, diffused light and reflected light in which light emitted from the LED element 10 is diffused or reflected by the cover 2 is an area closer to the base 4 than the LED element 10. Therefore, the light distribution of the illumination lamp 100 can be widened.
Furthermore, since the metal casing 31 has a shape that can be manufactured by integral molding, the configuration is simple and the assembly process of the illumination lamp 100 can be simplified. For this reason, this invention also has the effect of suppressing the manufacturing cost of an illumination lamp.

As described above, the present embodiment has been described by exemplifying the configuration in which the top portion b, the point c, the point d, the point e, and the point f are positioned on the dotted line s-s with reference to FIG. Is not to be done. In the present invention, light-shielding components such as the light source unit 1 (LED substrate 11) and the housing unit 3 except the LED element 10 are formed in a region sandwiched between the central axis O and the dotted line ss. By doing so, the same effect can be obtained.
That is, the peripheral edge part that continues in the circumferential direction of the light source attachment part 313 may be configured to be positioned closer to the central axis O than the virtual side surface of the cone including the dotted line s-s with the apex b as the apex. You may comprise the peripheral part which follows the board | substrate 11 circumferential direction so that it may be located in the center axis | shaft O side from the virtual side surface of the cone containing the dotted line ss which makes the top part b apex.

  Here, while maintaining the relationship of R1> R2, R2 is set to a larger dimension, the LED element 10 is mounted on the further peripheral side of the LED substrate 11, L1 is set to a larger dimension, and θ1 is set to a smaller angle. Although it is effective to widen the light distribution of the illumination lamp 100, the external shape and external dimensions of the illumination lamp 100 based on the mounting to the lighting fixture, the operating heat generated by the LED element 10 and the lighting device 5 are reduced. It goes without saying that the balance between transmission and release should be taken into account.

(Second feature and effect)
Next, the second feature and effect of the present invention will be described with reference to FIGS. FIG. 10 is a cross-sectional view illustrating a second feature of the illumination lamp according to Embodiment 1 of the present invention. FIGS. 11 to 13 are cross-sectional views showing the main configuration of a conventional illumination lamp exemplified for explaining the characteristics of the present invention.

  As described above, the illumination lamp 100 according to the present embodiment includes the metal casing 31 integrally formed into a bottomed cylindrical shape using a metal material (for example, aluminum) having thermal conductivity. A flat surface as the light source mounting portion 313 to which the light source unit 1 is mounted is formed on the outer surface side of the bottom surface portion, and a concave shape is formed by hollowing out the inner surface side of the bottom surface portion facing the outer surface side.

  In addition, the shape of the cylindrical outer peripheral portion of the metal casing 31 is gradually increased while maintaining a circular cross-sectional shape toward the light source unit 1 side in which circular bottom surfaces sharing the maximum outer diameter R1 are overlapped. The first conical portion 317s with a smaller outer diameter and the second conical portion 318s with a gradually decreasing outer diameter while maintaining a circular cross-sectional shape toward the opening end 31B on the base 4 side are combined. Shape. That is, the diameter dimension R2 of the light source mounting portion 313 is smaller than the maximum outer diameter dimension R1 of the metal casing 31. And the diameter dimension (R4 of FIG. 8) of the LED board 11 attached to the light source attachment part 313 is smaller than the diameter dimension R2 of the light source attachment part 313, respectively.

  The metal casing attachment portion 306A of the resin casing 30 is inserted into the recess of the metal casing 31 from the opening side. The resin casing 30 is inserted into the metal casing 31, and the lighting device 5 is stored in a space formed by the resin casing 30 and the metal casing 31.

As shown in FIG. 10, the maximum dimension of the illumination lamp 100 in the longitudinal direction is Lt1. Further, the lighting circuit board 500 that constitutes the lighting device 5 and on which the lighting circuit components (not shown) are mounted has an outer shape that can be housed in the resin casing 30, and the lighting circuit board 500 has a longitudinal direction. The maximum dimension is Lp1. And the theoretical light irradiation angle is
360- (2 * θ1) [degree] (1)
It is.

  The metal housing 31 in the present embodiment has a conical second housing portion 317 (first conical portion 317s), and the concave portion of the metal housing 31 is a second housing portion 317 (first housing). It is formed to extend deeply to the region of the conical portion 317s). The metal housing attachment portion 306A of the resin housing 30 is inserted into the concave portion of the metal housing 31 that extends deeply to the region of the second housing portion 317 (first conical portion 317s), and is attached to the metal housing. The lighting device 5 is housed inside the resin casing 30 including the portion 306A.

Thus, since the metal housing 31 has the conical second housing portion 317 (first conical portion 317s), the second housing portion 317 (first conical portion of the metal housing 31). A recess can be formed by extending deeply to the region 317s). As a result, a storage space for storing the lighting device 5 can be formed to greatly extend toward the light source unit 1 in the axial direction of the illumination lamp 100.
Further, since the metal casing 31 has a shape that can be manufactured by integral molding, the configuration is simple, and operating heat generated from the LED element 10 and the lighting device 5 is efficiently transmitted to be dissipated to the outside of the illumination lamp 100. Can be made. For this reason, this invention also has the effect of suppressing the manufacturing cost of an illumination lamp and improving operational quality.

Here, with reference to FIGS. 11-13, the subject of a prior art is demonstrated supplementarily. FIG. 11 is a cross-sectional view illustrating an example of a conventional illumination lamp configured using a metal casing 36 that does not include a conical second casing section (first conical section). As shown in FIG. 11, the maximum dimension of the illumination lamp 600 in the longitudinal direction is Lt1. The theoretical light irradiation angle is
360- (2 * θ1) [degree] (1)
It is.
Since the illumination lamp 600 is configured using the metal casing 36 that does not include the conical second casing section (first conical section), the maximum dimension of the lighting circuit board 506 in the longitudinal direction is Lp2. is there. When the maximum dimension Lp2 in the longitudinal direction of the lighting circuit board 506 in the prior art is compared with the maximum dimension Lp1 in the longitudinal direction of the lighting circuit board 500 in the present invention,
Lp2 <Lp1 (2)
It is.

  That is, since the maximum dimension in the longitudinal direction of the lighting circuit board 506 in the prior art cannot be larger than the maximum dimension Lp1 in the longitudinal direction of the lighting circuit board 500 in the present invention, the size of the lighting circuit component that can be mounted on the circuit board 506 is large. Limited by the number of sheaths. For this reason, since the illumination lamp 600 of the prior art can only accommodate a small lighting device, it is difficult to obtain sufficient output characteristics.

FIG. 12 is a cross-sectional view illustrating another example of a conventional illumination lamp configured using a metal casing 36a that does not include a conical second casing section (first conical section). As shown in FIG. 12, the maximum dimension of the illumination lamp 600a in the longitudinal direction is Lt2. The theoretical light irradiation angle is
360- (2 * θ1) [degree] (1)
It is.
The illumination lamp 600a includes the lighting device 5 using the lighting circuit board 500 in the present invention. The maximum dimension of the lighting circuit board 500 in the longitudinal direction is Lp1. Since the illumination lamp 600a in the prior art is configured using the metal casing 36a that does not include the conical second casing section (first conical section), the maximum dimension of the illumination lamp 600a in the longitudinal direction is Lt2. It has become. When the maximum dimension Lt2 in the longitudinal direction of the illumination lamp 600a is compared with the maximum dimension Lt1 in the longitudinal direction of the illumination lamp 600 in the present invention,
Lt2> Lt1 (3)
It is.

  That is, the maximum dimension in the longitudinal direction of the illumination lamp 600a according to the prior art is larger than the maximum dimension Lt1 in the longitudinal direction of the illumination lamp 600 according to the present invention, so that the exterior dimension of the illumination lamp 600a is large. For this reason, depending on the luminaire, the illumination lamp 600a may not be attached, and the packaging volume is increased, which causes a deterioration in distribution efficiency.

FIG. 13 is a cross-sectional view showing still another example of a conventional illumination lamp configured using a metal casing 36a that does not include a conical second casing section (first conical section). As shown in FIG. 13, the maximum dimension of the illumination lamp 600b in the longitudinal direction is Lt1.
The illumination lamp 600b includes the lighting device 5 using the lighting circuit board 500 in the present invention. The maximum dimension of the lighting circuit board 500 in the longitudinal direction is Lp1. Although the illumination lamp 600b in the prior art has a maximum dimension in the longitudinal direction of Lt1, the illumination lamp 600b is configured using the metal casing 36a that does not include the conical second casing section (first conical section). The theoretical light irradiation angle is
360- (2 * θ2) [degree] (4)
It is.
Here, θ2> θ1, and the theoretical light irradiation angle of the illumination lamp 600b is compared with the theoretical light irradiation angle of the illumination lamp 600 in the present invention.
360- (2 * θ2) [degree] <360- (2 * θ1) [degree] (3)
It is.

  That is, since the theoretical light irradiation angle of the illumination lamp 600b in the prior art is smaller than the theoretical light irradiation angle of the illumination lamp 600 in the present invention, the illumination lamp 600b has a narrow light irradiation range. For this reason, a use is limited and it becomes a factor which makes merchantability low.

  As is apparent from the comparison with several conventional illumination lamps, the illumination lamp 100 according to the present invention includes a metal housing having a conical second housing portion (first conical portion 317). By being configured using the body 31, it is small and has a wide light distribution characteristic, and a large internal space can be provided, so that the large and large output lighting device 5 can be accommodated. In other words, the present invention combines the effects of providing a high-intensity illumination lamp.

(Third feature and effect)
Further, the third feature and effect of the present invention will be described with reference to FIGS. FIG. 14 is a diagram illustrating a third feature of the illumination lamp according to Embodiment 1 of the present invention. FIG. 15 is a cross-sectional view showing a main configuration of a conventional illumination lamp, which is exemplified for explaining the characteristics of the present invention.

  As shown in FIG. 14, in the illumination lamp 100 according to the present embodiment, as an example of diffused light or reflected light in which the light emitted from the LED element 10 is diffused or reflected by the cover 2, an inner surface portion of the cover A part of the light emitted from the point b2 to the base 4 side is emitted in the direction of the arrow x2. Here, the straight line O2 (dashed line) intersects with the point b, and the line parallel to the central axis O (dashed line) of the illumination lamp 100 is a straight line. Light emitted from the point b2 of the cover inner surface portion 21 at an angle θ3 with respect to the straight line O2 (dashed line) is incident on the point M on the first conical portion 317 in the direction of the arrow x2. The incident light has an emission angle equal to the incident angle with respect to the cone-shaped second casing portion 317 (first cone-shaped portion 317s), is reflected at the point M, and travels toward the base 4 side region from the reference line T. Are emitted.

  When the diffused light or reflected light diffused or reflected by the cover 2 is incident on the conical second housing part 317 (first conical part 317s), most of the reflected light is incident. The light is emitted to the base 4 side region. That is, in the illumination lamp 100 configured by the metal casing 31 having the conical second casing portion 317 (first conical section 317s), the light reaching the vicinity of the cover mounting portion 314 of the metal casing 31 is Most of the light is reflected by the conical second housing part 317 (first conical part 317s) and is emitted to the base 4 side region.

Here, with reference to FIG. 15, the problem of the prior art will be described supplementarily.
As shown in FIG. 15, in the illumination lamp 600 according to the prior art, as an example of diffused light or reflected light in which the light emitted from the LED element 10 is diffused or reflected by the cover 2, Part of the light emitted from b2 to the base 4 side is emitted in the direction of the arrow x2. Here, the straight line O2 (dashed line) intersects with the point b, and the line parallel to the central axis O (dashed line) of the illumination lamp 100 is a straight line. Light emitted from the point b2 of the cover inner surface portion 21 at an angle θ3 with respect to the straight line O2 (dashed line) enters the point Mc on the light source mounting portion in the direction of the arrow x2. The incident light has an emission angle equal to the incident angle with respect to the light source mounting part, is reflected at the point Mc, and is emitted from the reference line T toward the cover 2 side.

In the conventional illumination lamp 600, when diffused light or reflected light diffused or reflected by the cover 2 is incident on the light source mounting portion or the LED substrate, most of the reflected and incident light is the cover 2. The light is emitted to the side area. That is, in the illumination lamp 600 configured with the metal casing 36 that does not include the conical second casing portion (first conical section), most of the light reaching the vicinity of the cover mounting portion of the metal casing 36 Is reflected by the light source mounting portion and the LED substrate and emitted to the area on the cover 2 side.
For this reason, the amount of light irradiated to the region on the base 4 side is small, and the shadow of the peripheral portion of the light source mounting portion is imaged near the opening end portion 22 of the cover 2 to form a belt-like dark belt region Bd. It had been. That is, the vicinity of the opening end 22 of the cover 2 was unnaturally dark.

Here, referring again to FIG. 14, the illumination lamp 100 according to the present invention is configured using the metal casing 31 including the first conical portion 317, and thus has a strip-like shape in the vicinity of the opening end 22 of the cover 2. Since the dark band region Bd is not formed, the discontinuity of light distribution is eliminated. Thereby, light is emitted from the entire surface of the cover 2, and a more natural light emission feeling can be obtained.
In the present invention, it is not necessary to provide a dedicated light emitting element for light distribution to the base side, and an illumination lamp having a natural light emission feeling can be provided with a very simple configuration.

  As described above, since the illumination lamp 100 according to the present invention is configured, the light distribution can be widened with a simple configuration while maintaining a small size and light weight.

(Modification of Embodiment 1)
Several modifications according to the first embodiment will be described with reference to FIGS.
16-22 is a figure explaining the modification of the illumination lamp which concerns on Embodiment 1 of this invention.

(First modification)
In the first modification, the arrangement locations of the two boss portions provided in the resin casing 30 of the illumination lamp 100 according to Embodiment 1 are changed.
FIG. 16 is a cross-sectional view illustrating the configuration of the illumination lamp according to the first modification.
The illumination lamp 100a according to the second modification will be described with reference to FIG. Note that the first modification will be described with a focus on differences from the first embodiment, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 16, the first boss 303a and the second boss 304a of the illumination lamp 100a according to the first modification are formed at two locations facing each other across the center of the resin casing 30 in the first embodiment. One of the two bosses (303a, 304a) is formed close to the other side. The illumination lamp 100a according to the first modification is suitable for stably holding the lighting circuit board 500a mounted with a high-profile component (not shown) inside the resin housing 30a from the center. . In addition, since the angle formed between the resin casing inner peripheral surface portion 300 and each of the two bosses (303a, 304a) is smaller than that of the illumination lamp 100 according to Embodiment 1, the lighting circuit board 500a is more strongly sandwiched. be able to. That is, the lighting circuit board 500a can be held more stably.

  The first boss 303a and the second boss 304a extend to the third conical portion 307a in parallel with the central axis to form the first rib 301a and the second rib 302a, and reinforce the resin casing 30a. Make it difficult to deform. The dimensions and arrangement locations of the two bosses (303a, 304a) are appropriately determined according to the design specifications such as the dimensions of the lighting circuit board 500a and the dimensions and arrangement of lighting circuit components (not shown) mounted on the lighting circuit board 500a. Adjust it.

(Second modification)
The illumination lamp 100b according to the second modification is obtained by partially changing the thickness of the peripheral portion of the resin casings 30 and 30a of the illumination lamps 100 and 100a according to the first or second embodiment.
FIG. 17 is a cross-sectional view illustrating a configuration of an illumination lamp according to a second modification.
With reference to FIG. 17, the illumination lamp 100b which concerns on a 2nd modification is demonstrated. The second modification will be described with a focus on differences from the above-described first embodiment or modification, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 17, the resin casing 30b of the illumination lamp 100b according to the second modification is provided with a thick portion 308 in which the thickness of the peripheral portion on the resin casing inner peripheral surface portion 300 side is partially increased. . The thick portion 308 is provided so that the thickness of the peripheral portion between the first boss 303b and the second boss 304b is the same. The wide portion of the lighting circuit board 500 is inserted between the thick end 309 which is the end of the first boss 303b of the thick portion 308 and the first boss 303b, and the end of the wide portion is fitted. A recessed fitting portion A is formed. Similarly, the wide portion of the lighting circuit board 500 is inserted between the thick end 309, which is the end of the thick portion 308 on the second boss 304b side, and the second boss 304b, so that the wide portion A concave fitting portion B into which the end portion is fitted is formed.

  By inserting the lighting circuit board 500 into the fitting place A and the fitting place B, the lighting circuit board 500 can be held in the resin casing 30b. In the illumination lamp 100b according to the second modification 3, the thick end portion 309 having a height higher than the inner peripheral surface portion 300 of the resin casing and the wide portion of the lighting circuit board 500 are inserted and the end portions of the wide portion are fitted. Therefore, the lighting circuit board 500 can be held in the resin casing 30b more stably than in the first or second embodiment.

  The first boss 303b, the second boss 304b, and the thick portion 308 extend to the third conical portion 307b in parallel with the central axis to form the first rib 301b and the second rib 302b, and the resin housing The body 30b is reinforced to make it difficult to deform.

(Third Modification)
The illumination lamp 100c which concerns on a 3rd modification changes the position of the thick part 308 of the resin housing | casing 30b of the illumination lamp 100b which concerns on a 2nd modification.
FIG. 18 is a cross-sectional view illustrating the configuration of an illumination lamp according to a third modification.
With reference to FIG. 18, the illumination lamp 100c which concerns on a 3rd modification is demonstrated. Note that the third modification will be described with a focus on differences from the second modification, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 18C, in the illumination lamp 100c according to the third modification, the thick portion 308c is located near the first boss 303c and the second boss 304c with respect to the central axis of the resin casing 30c. It is partially formed at a location to be rotated. The wide portion of the lighting circuit board 500c is inserted between the thick end 309c, which is the end of the thick portion 308c on the first boss 303c side, and the first boss 303c, and the end of the wide portion is fitted. A concave fitting portion C is formed. Similarly, the wide portion of the lighting circuit board 500c is inserted between the thick end 309c, which is the end of the thick portion 308c on the second boss 304c side, and the second boss 304c, so that the end of the wide portion A concave fitting portion D into which the portion is fitted is formed. In addition, the fitting location C and the fitting location D are formed in the location which becomes rotation object with respect to the central axis of the resin housing | casing 30c. By inserting the lighting circuit board 500 into the fitting place C and the fitting place D, the lighting circuit board 500c can be held by the resin casing 30c.

  The illumination lamp 100c according to the third modified example has a thick end portion 309c having a height higher than that of the resin casing inner peripheral surface portion 300, and a concave shape into which the end portion of the wide portion 500c is fitted by insertion of the lighting circuit board 500c. Therefore, the lighting circuit board 500c can be held in the resin casing 30c more stably than in the first embodiment or the modification described above. Furthermore, since the fitting location C and the fitting location D are formed to be rotated with respect to the central axis of the resin casing 30c, the lighting circuit board 500c having a width of the wide portion closer to the inner diameter of the resin casing 30c. Can be held in the resin casing 30c. That is, the degree of freedom of mounting a lighting circuit component (not shown) on the lighting circuit board 500c is improved.

(Fourth modification)
The illumination lamp which concerns on a 4th modification changes the structure of the two boss | hub parts of the illumination lamp 100 in Embodiment 1. FIG.
FIG. 19 is a cross-sectional view illustrating a configuration of an illumination lamp according to a fourth modification.
With reference to FIG. 19, the illumination lamp 100d which concerns on a 4th modification is demonstrated. Note that the fourth modification will be described mainly with respect to differences from the first embodiment, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 19, in the illumination lamp 100d according to the fourth modification, the first boss 303d and the second boss 304d provided in the resin casing 30d are inside the resin casing which is the inner surface of the cylinder of the resin casing 30d. It protrudes from the peripheral surface portion 300 toward the inside of the resin casing 30d, and protrudes from the resin casing outer peripheral surface portion 306, which is the outer surface of the cylinder of the resin casing 30d, toward the outside of the resin casing 30d. In addition, fitting places E having a concave shape toward the outside of the metal casing 31d are formed at two locations on the inner wall surface of the metal casing 31d. The first boss 303d and the second boss 304d are configured to be fitted. That is, the outer surface of the resin housing 30d and the inner surface of the metal housing 31d do not interfere with each other.

  With this configuration, in addition to the effects described in the first embodiment, when the resin casing 30d is inserted into the recess of the metal casing 31d, the first boss 303d and the second boss 304d are inserted into the insertion guide. Therefore, the illumination lamp 100d can smoothly assemble the product. When the resin casing 30d is inserted into the recess of the metal casing 31d, the mutual positions of the resin casing 30d and the metal casing 31d are determined and the mutual rotation is restricted. For this reason, the assembly work such as inserting the wiring material into the third through holes 112 and 312 can be smoothly performed, so that stable assembly quality can be obtained.

(5th modification)
The illumination lamp which concerns on a 5th modification changes a part of shape of the cylinder peripheral part of the housing | casing part of the illumination lamp 100 in Embodiment 1. FIG.
20 is a cross-sectional view illustrating a configuration of an illumination lamp according to a fifth modification, and is a cross-sectional view taken along line BB in FIG. FIG. 21 is a cross-sectional side view illustrating the configuration of the casing portion in the fifth modification, and FIG. 22 is an enlarged perspective view illustrating the configuration of the resin casing in the fifth modification.
With reference to FIGS. 20-22, the illumination lamp 100e which concerns on a 5th modification is demonstrated. Note that the fifth modification will be described with a focus on differences from the first embodiment, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

As shown in FIGS. 20 and 21, in the illumination lamp 100e according to the fifth modification, a flat portion 315 is formed on a part of the inner peripheral surface portion 316 of the metal casing 31e, and the metal casing attachment portion of the resin casing 30e. A flat portion 305 is provided in part of 306A.
As shown in FIG. 22, the metal housing attachment portion 306A of the resin housing 30e has a flat surface portion 305 in a part of a cylindrical peripheral portion, and the cross-sectional shape thereof is a so-called bowl shape.

  The inner surface of the concave portion of the metal casing 31e is formed in a shape that can contact the outer peripheral portion of the metal casing mounting portion 306A of the resin casing 30e when the resin casing 30e is inserted into the concave portion of the metal casing 31e. Has been. That is, when the resin casing 30e is inserted into the recess of the metal casing 31e. The flat portion 315 and the flat portion 305 are configured to face each other. The peripheral part of the metal casing 31e facing the flat part 305 constitutes a thick part.

  With this configuration, in addition to the effects described in the first embodiment, the planar portion 305 functions as an insertion guide when the resin casing 30e is inserted into the recess of the metal casing 31e. The illumination lamp 100e can smoothly assemble the product. And if the resin housing | casing 30e is inserted in the recessed part of the metal housing | casing 31e, while the mutual position of the resin housing | casing 30e and the metal housing | casing 31e is determined, mutual rotation is controlled. For this reason, the assembly work such as inserting the wiring material into the third through holes 112 and 312 can be smoothly performed, so that stable assembly quality can be obtained.

  The peripheral part of the metal casing 31e facing the flat surface part 305 constitutes a thick part, and the heat capacity of the metal casing 31e increases. For this reason, the effect of lowering the operating heat of the LED element 10 and the lighting device 5 is further obtained. That is, the illumination lamp 100e can improve operational reliability.

Embodiment 2. FIG.
The illumination lamps 100 to 100e according to the first embodiment described above are combined with a lamp socket that fits into a base of the illumination lamp and a housing that houses one or a plurality of illumination lamps to constitute an illumination device. be able to.
FIG. 23 is a cross-sectional view showing a configuration of illumination apparatus 150 to which illumination lamps 100 to 100e according to Embodiment 1 are applied. FIG. 23 shows an example where the illumination lamp 100 according to Embodiment 1 is applied.

As shown in FIG. 23, the illumination device 150 includes an appliance main body 170 containing the illumination lamp 100, a lamp socket 160 to which a base 4 (not shown) of the illumination lamp 100 is attached, and an illumination provided in the appliance main body 170. And a reflector 180 that reflects light emitted from the lamp 100.
A lighting device 150 illustrated in FIG. 23 is a lighting device that is inserted into an opening that is a fixture mounting portion 190 formed on a ceiling or the like, and illuminates a room from the fixture mounting portion 190 side. In addition to such a ceiling-mounted illumination device, for example, the illumination lamps 100 to 100e described in the first embodiment may be applied to an illumination device installed on a wall or an illumination device placed on a table. it can.

  As mentioned above, although embodiment of this invention was illustrated exemplifying the light bulb-type illumination lamp (bulb-shaped LED lamp), this invention does not limit the form of an illumination lamp.

  DESCRIPTION OF SYMBOLS 1 Light source part, 2 Cover, 3, 3a, 3b, 3c, 3d, 3e Case part, 4 base, 5 Lighting device (lighting circuit), 9 Screw (attachment member), 10 LED element (light emitting element), 11 LED Substrate, 20 cover outer surface portion, 21 cover inner surface portion, 22 open end portion, 30, 30a, 30b, 30c, 30d, 30e resin housing, 31, 31d, 31e, 36, 36a metal housing, 40 clamping portion, 41 Center electrode, 50 lighting circuit components, 80, 80a, 80d first contact part, 81, 81a, 81d second contact part, 82, 82a, 82b, 82c 82d third contact part, 83, 83a, 83b, 83c , 83d Fourth contact portion, 100, 100a, 100b, 100c, 100d, 100e Illumination lamp (bulb-shaped LED lamp), 110 first through hole, 111 second through hole, 1 12 Third through hole, 150 Lighting device, 160 Lamp socket, 170 Instrument body, 180 Reflector, 190 Instrument mounting part, 300 Inner peripheral surface part of resin housing, 301, 301a, 301b, 301c, 301d First rib, 302, 302a, 302b, 302c, 302d Second rib, 303, 303a, 303b, 303c, 303d First boss, 304, 304a, 304b, 304c, 304d Second boss, 305 Flat surface (resin housing), 306 Resin housing outer peripheral surface 306A Metal housing attachment part, 306B Base attachment part, 307, 307a, 307b, 307c, 307d, 307e Third conical part (resin housing), 308, 308c Thick part, 309, 309c Thick end part, 30A, 30B Open end, 310 1st through hole, 311 2nd through Hole, 312 Third through hole, 313 Light source mounting portion, 314 Cover mounting portion, 315 Plane portion (metal casing), 316 Metal casing inner peripheral surface portion, 317 Second casing portion (metal casing), 317s First cone , 318 first casing (metal casing), 318s second conical section, 31B open end, 31s1 maximum outer diameter section, 380 first contact section (first boss), 381 second contact Portion (second boss), 382 third contact portion (resin casing inner peripheral surface portion), 383 fourth contact portion (resin casing inner peripheral surface portion), 500, 500a, 500c, 500d, 506 lighting circuit board, 580 first 1 contact part (lighting circuit board), 581 second contact part (lighting circuit board), 582 third contact part (lighting circuit board), 583 fourth contact part (lighting circuit board), 600, 600a, 600b (Conventional) illumination lamp.

Claims (14)

A cylindrical first housing part;
A conical second housing disposed on the first housing portion so as to expose an upper end portion of the first housing portion, wherein the outer diameter of the upper end is smaller than the outer diameter of the lower end. The body,
A light source unit disposed on the second housing unit;
A translucent cover disposed along the end so as to cover the second housing part and the light source part;
A cylindrical insulating housing having a fastening mechanism disposed in an internal space formed so as to communicate with the inside of the first housing portion and the second housing portion and fastened to the second housing portion; ,
A lighting device housed in the insulating housing in contact with the fastening mechanism,
The illumination lamp, wherein the light source unit is disposed on the second housing unit so as to be housed in a conical space formed by connecting the top part of the cover and the end part.   The illumination lamp according to claim 1, wherein the lighting device is housed in the insulating housing in a state of being in contact with an inner peripheral surface portion of the insulating housing where the fastening mechanism is formed. The second housing part is fixed to the insulating housing using a fastening member,
The illumination lamp according to claim 1, wherein the lighting device is housed in the insulating casing along a direction of the fastening member. The lighting device has a plurality of lighting circuit components and a lighting circuit board on which the lighting circuit components are mounted,
The illumination lamp according to claim 2, wherein the lighting circuit board is housed in the insulating casing in a state where the lighting circuit board is in contact with the fastening mechanism and the inner peripheral surface portion. The ratio of the outer diameter of the upper end to the outer diameter of the lower end is:
The illumination lamp according to any one of claims 1 to 4, wherein the illumination lamp is smaller than a ratio of a minimum dimension connecting the upper end portion and the top portion to a depth dimension of the cover. The first housing part and the second housing part are:
The illumination lamp according to any one of claims 1 to 5, wherein the illumination lamp is integrally formed. A light source unit;
Maximum outer diameter portion formed between the opposite side of the other end to one end and the end of the light source unit is disposed, toward the side of the one end from the maximum outer diameter, the outer diameter of the outer peripheral portion A first conical portion formed so as to be gradually reduced, and a second cone formed so that the outer diameter of the outer peripheral portion is gradually reduced from the maximum outer diameter portion toward the other end side. A cylindrical housing portion having a shape portion;
A translucent cover attached along the maximum outer diameter portion so as to cover the first conical portion and the light source portion;
A cylindrical insulating housing having a fastening mechanism disposed in an internal space formed to communicate with the inside of the first conical portion and the second conical portion, and fastened to the housing portion;
A lighting device housed in the insulating housing in a state of being in contact with the fastening mechanism;
The light source part is disposed in a light source mounting part formed at one end of the housing part so as to be housed in a conical space formed by connecting the top part of the cover and the maximum outer diameter part. Lighting lamp characterized by.   The illumination lamp according to claim 7, wherein the lighting device is housed in the insulating housing in a state of being in contact with an inner peripheral surface portion of the insulating housing where the fastening mechanism is formed. The second conical portion is fixed to the insulating housing using a fastening member,
The illumination lamp according to claim 7 or 8, wherein the lighting device is housed in the insulating casing along a direction of the fastening member. The lighting device has a plurality of lighting circuit components and a lighting circuit board on which the lighting circuit components are mounted,
The illumination lamp according to claim 8, wherein the lighting circuit board is housed in the insulating casing in a state in which a long side edge portion of the lighting circuit board is in contact with the fastening mechanism and the inner peripheral surface portion. The first conical portion, the second conical portion, and the light source mounting portion are:
The illumination lamp according to any one of claims 7 to 10, wherein the illumination lamp is integrally formed. The housing portion is
It consists of a metal casing having thermal conductivity and a resin casing having electrical insulation,
The metal casing is
The concave portion in which the resin casing is accommodated, the light source mounting portion to which the light source portion is attached to an outer surface portion facing the bottom surface portion of the concave portion, and the maximum outer diameter portion facing the inner peripheral surface portion of the concave portion. A cover attaching portion to which the cover is attached is formed,
The resin casing is
While being accommodated in the recess, a housing space in which the lighting device is accommodated in a state in which the long edges of the lighting circuit substrate to the fastening mechanism abuts the ferrule attachment portion ferrule is that attached lighting lamp according to claim 1 0, characterized in that but is formed. The light source mounting portion is
The illumination lamp according to any one of claims 7 to 12, wherein the outside diameter dimension is larger than the outside diameter dimension of the light source unit. A luminaire body installed at a position to illuminate the illumination target space and connected to commercial power;
A lamp socket attached to the luminaire body;
14. An illumination device comprising: the illumination lamp according to claim 1, wherein the illumination lamp is attached to the lamp socket and supplied with commercial power via the lamp socket.