CN107250657B

CN107250657B - Lighting lamp and lighting device

Info

Publication number: CN107250657B
Application number: CN201580076061.9A
Authority: CN
Inventors: 西冈恒人
Original assignee: Mitsubishi Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Corp; Mitsubishi Electric Lighting Corp
Priority date: 2015-02-23
Filing date: 2015-02-23
Publication date: 2020-01-21
Anticipated expiration: 2035-02-23
Also published as: CN107250657A; WO2016135769A1; JP6293356B2; JPWO2016135769A1

Abstract

The invention provides an illuminating lamp which can restrain the deviation of the relative position of a light source relative to a cover. The illumination lamp of the present invention is characterized by comprising: a light source unit (3) in which a light source (4) is disposed on a plane parallel to the longitudinal direction; a light source side positioning portion (67) which is formed on the surface of an arc portion (64) of the light source module (3) that is located on the opposite side with respect to the surface on which the light source (4) is arranged, and which is a groove in which a recessed portion (67b) sandwiched by a pair of inclined surfaces (67a) is formed over the entire longitudinal direction; and a cover (2) that is cylindrical and holds the light source assembly (3) inside so that the inner peripheral surface faces the surface of the light source assembly (3) on which the light source-side positioning section (67) is formed; and a cover-side positioning portion (23) which is formed on the inner peripheral surface of the cover (2) at a position facing the light source-side positioning portion (67), and which is a protrusion having a ridge portion (23a) formed at the tip thereof, the ridge portion (23a) abutting against the recess portion (23 b).

Description

Lighting lamp and lighting device

Technical Field

The present invention relates to an illumination lamp and an illumination device using the same.

Background

In recent years, with a demand for environmental attention, an illumination lamp and an illumination device using a Light Emitting Diode (hereinafter, referred to as an LED), which is one of solid-state Light Emitting elements having a longer life and lower power consumption than conventional incandescent lamps and fluorescent lamps, as a Light source have been widely used.

As an illumination lamp using an LED, for example, as in patent document 1, there are: a substrate mounted with a plurality of LED light sources; a heat sink that holds the substrate and absorbs heat emitted from the LED light source; and a cover (corresponding to the pipe body of patent document 1) having a rail-shaped holding portion formed therein, the heat sink being held inside by the holding portion.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-77453

Disclosure of Invention

Problems to be solved by the invention

The radiator and the cover of the illumination lamp as in patent document 1 are formed of different materials and by different manufacturing processes, and therefore have different dimensional variations. Therefore, in order to reliably attach the radiator to the inside of the cover, a predetermined gap (also referred to as a gap or a clearance) is set in advance between the inner peripheral surface of the cover and the radiator. However, even if the set gap size is the same for each lamp, the gap size in each lamp manufactured varies for each lamp due to variations in the size of the radiator and the cover. Due to the dimensional variation of the gap, the position or posture of the heat sink with respect to the cover differs among the illumination lamps. Further, since the heat sink holds the substrate on which the LED light source is mounted, the position or posture of the LED light source with respect to the cover also differs among the illumination lamps. Since the position or posture of the LED light source affects the performance of the illumination lamp such as the beam, the illumination angle, and the illumination range, the performance of each illumination lamp varies.

The present invention has been made in view of the above problems, and an object thereof is to provide an illumination lamp and an illumination device in which variations in performance of each illumination lamp are suppressed.

Means for solving the problems

The illumination lamp of the present invention is characterized by comprising: a light source unit having an elongated shape and a light source arranged on a surface parallel to the longitudinal direction; a light source side positioning portion formed in a part of a surface of the light source assembly that is opposite to a surface on which the light source is arranged, in the entire longitudinal direction of the light source assembly; a cover which is hollow and elongated and holds the light source assembly inside so that an inner peripheral surface of the cover faces a surface of the light source assembly on which the light source side positioning portion is formed; and a cover side positioning portion formed at a position facing the light source side positioning portion in an inner peripheral surface of the cover, the light source side positioning portion facing the cover side positioning portion at a predetermined interval, either the light source side positioning portion or the cover side positioning portion being a protrusion having a ridge portion formed at a front end thereof, the other of the light source side positioning portion and the cover side positioning portion being a groove having a recess portion formed by being sandwiched by a pair of inclined surfaces, a height dimension of the protrusion and a depth dimension of the groove being respectively larger than the interval, the ridge portion abutting against the recess portion.

The lighting device of the present invention is characterized by comprising the illumination lamp and a power supply device for supplying power to the light source.

Effects of the invention

In the illumination lamp and the illumination device according to the present invention, the light source unit is provided with the light source side positioning portion, the cover side positioning portion is formed at a portion of the cover facing the light source side positioning portion, one of the light source side positioning portion and the cover side positioning portion is a protrusion having a ridge portion, and the other is a groove having a recess portion sandwiched by a pair of inclined surfaces.

Drawings

Fig. 1 is a perspective view of a lighting device of the present invention.

Fig. 2 is a perspective view of the illumination lamp according to embodiment 1.

Fig. 3 is a side view of the illumination lamp of embodiment 1.

Fig. 4 is a sectional view showing the section a-a in fig. 2 and 3 of the illumination lamp according to embodiment 1.

Fig. 5 is an enlarged view of the region B shown in fig. 4 of the illumination lamp of embodiment 1.

Fig. 6 is a perspective view of the heat sink according to embodiment 1 as viewed from one end portion (from the base point side of arrow X).

Fig. 7 is a perspective view of the heat sink according to embodiment 1 as viewed from the other end portion (the front end side of arrow X).

Fig. 8 is an enlarged view of the cover-side positioning portion and the light source-side positioning portion when the light source unit is biased to the emission side in the illumination lamp 1 according to embodiment 1.

Fig. 9 is a sectional view of an illumination lamp according to modification 1 of embodiment 1.

Fig. 10 is a sectional view of an illumination lamp according to modification 2 of embodiment 1.

Fig. 11 is a sectional view of an illumination lamp according to modification 3 of embodiment 1.

Fig. 12 is a sectional view of an illumination lamp according to modification 4 of embodiment 1.

Fig. 13 is a sectional view of an illumination lamp according to modification 5 of embodiment 1.

Fig. 14 is an enlarged perspective view of the other end portion (the front end side of arrow X) of the heat sink according to modification 5 of embodiment 1.

Fig. 15 is a sectional view of the illumination lamp of embodiment 2.

Fig. 16 is a sectional view of an illumination lamp according to modification 1 of embodiment 2.

Fig. 17 is a sectional view of an illumination lamp according to modification 2 of embodiment 2.

Fig. 18 is a sectional view of an illumination lamp according to modification 3 of embodiment 2.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. In the description of the embodiments, the description of the same or corresponding portions will be omitted or simplified as appropriate. In the drawings, the arrow X, the arrow Y, and the arrow Z are defined as 3-axis directions of orthogonal coordinate systems that are orthogonal to each other, but this is described for convenience of explanation, and the arrangement, orientation, and the like of the devices, the instruments, the components, and the like are not limited. The structure of the device, the appliance, the component, and the like can be appropriately changed in material, shape, size, and the like within the scope of the present invention.

Embodiment 1.

Fig. 1 is a perspective view of a lighting device of the present invention. The illumination device 100 includes: an elongated illumination lamp 1 that is lighted by being supplied with electric power; and a lighting fixture 101, the lighting fixture 101 being capable of mounting the illumination lamp 1 and supplying power to the illumination lamp 1. The lighting apparatus 100 is mounted on a ceiling or a wall surface so that the illumination lamp 1 faces the inside of a room, and illuminates the room with light by lighting the illumination lamp 1.

The lighting fixture 101 includes a fixture body 102, a holding socket 103, a power supply socket 104, and a power supply box 105. The instrument body 102 is hollow and has an elongated box shape. The appliance body 102 has a mounting member (not shown) such as a V-spring or a joint, and is mounted on a ceiling or a wall surface using the mounting member.

On the surface of the appliance main body 102 on the side where the illumination lamp 1 is attached, a holding socket 103 is provided so as to protrude in the vicinity of one end in the longitudinal direction (the direction of the arrow X), and a power supply socket 104 is provided so as to protrude in the vicinity of the other end in the longitudinal direction (the direction of the arrow X). The distance between the holding socket 103 and the power supply socket 104 is substantially equal to the length of the illumination lamp 1 in the longitudinal direction, and the holding socket 103 and the power supply socket 104 can hold the illumination lamp 1. In addition, the power supply jack 104 is electrically connected to the held illumination lamp 1.

Further, a power supply box 105 is housed inside the device main body 102. The power supply box 105 includes a power supply device (not shown) that receives power supply from an external power supply and converts the power supply into a voltage or a current suitable for the illumination lamp 1. The power supply device is electrically connected to the power supply jack 104, and can supply power to the illumination lamp 1 through the power supply jack 104.

Fig. 2 is a perspective view of the illumination lamp according to embodiment 1. Fig. 3 is a side view of the illumination lamp of embodiment 1. Fig. 4 is a sectional view showing the section a-a in fig. 2 and 3 of the illumination lamp according to embodiment 1. In fig. 2, a part of the cover 2 is omitted for the purpose of explaining the inside of the cover 2. The illumination lamp 1 includes: a cover 2 having a light-transmitting property, the cover 2 being in the form of an elongated hollow tube having both ends open in a longitudinal direction (direction of arrow X); a light source unit 3 held inside the cover 2, the light source unit 3 including a light source 4, a substrate 5, and a heat sink 6; a holding base 7, the holding base 7 being attached to one end portion in the longitudinal direction of the cover 2; and a power feeding base 8, the power feeding base 8 being attached to the other end portion of the cover 2. As shown in fig. 4, in a direction (direction of arrow Z) perpendicular to the longitudinal direction of the illumination lamp 1, a side of the light source 4 that emits light to be described later is referred to as an emission side (tip side of arrow Z), and a side opposite to the emission side is referred to as an appliance side (base point side of arrow Z). That is, the illumination lamp 1 is attached to the lighting apparatus 101 so that the apparatus side (the base point side of the arrow Z) of the illumination lamp 1 faces the lighting apparatus 101.

The illumination lamp 1 is manufactured by inserting the light source assembly 3 including the light source 4, the substrate 5, and the heat sink 6 from the openings at both ends of the cover 2, and covering the openings at both ends of the cover 2 with the holding cap 7 and the power feeding cap 8 after the light source assembly 3 is inserted. Further, an adhesive may be applied to a surface of the light source module 3 facing the cover 2 or a surface of the cover 2 facing the light source module 3, that is, between the light source module 3 and the cover 2, to firmly fix the light source module 3 and the cover 2.

The cover 2 is formed with: a cylindrical portion 21, the cylindrical portion 21 being elongated and cylindrical; a pair of holding protrusions 22, the pair of holding protrusions 22 protruding from the inner circumferential surface of the cylindrical portion 21 toward the inside of the cylindrical portion 21; and a cover-side positioning portion 23, the cover-side positioning portion 23 protruding from a portion of the inner circumferential surface of the cylindrical portion on the appliance side toward the center axis O of the cover 2. The light source unit 3 inserted into the cover 2 is held inside the cover 2 by the cylindrical portion 21 of the cover 2 and the holding projection 22. Both ends of the cover 2 in the longitudinal direction (the direction of arrow X) are open. The holding projection 22 and the cover-side positioning portion 23 are formed so as to extend in the entire longitudinal direction of the cover 2, and the cross section obtained by cutting the cover 2 perpendicularly to the longitudinal direction is always the cross-sectional shape as shown in fig. 4 regardless of the position in the longitudinal direction. The holding projection 22 and the cover-side positioning portion 23 are located at positions shifted toward the instrument side from the center axis O.

As shown in fig. 4, in embodiment 1, the thickness T of each of the cylindrical portion 21 and the holding protrusion 22 is equal to each other, and is, for example, 1 [ mm ]. In embodiment 1, the distance Ri from the central axis O to the inner circumferential surface of the cylindrical portion 21 is 11.75 [ mm ]. Further, a distance H from a plane on the emission side of the holding projection 22 to a plane parallel to the plane on the emission side and passing through the central axis O is 5.42 [ mm ]. However, the dimensions of T, Ri and H are not limited to those of embodiment 1.

The cover 2 is formed using a material having light transmittance, and for example, a resin having light transmittance such as polycarbonate or acrylic resin can be used. As a material of the cover 2, a high light diffusion resin material in which a resin having light transmittance such as polycarbonate is used as a base material and a diffusing agent having a refractive index different from that of the base material is mixed at a predetermined weight ratio may be used.

Fig. 5 is an enlarged view of the region B shown in fig. 4 of the illumination lamp of embodiment 1. In embodiment 1, the cover-side positioning portion 23 is a protruding portion that protrudes in a substantially triangular shape in cross section. The two inclined projection surfaces 23b forming a triangular shape are parallel to the longitudinal direction and project toward the central axis O. A ridge portion 23a is formed at the leading end where the two projection inclined surfaces 23b meet. The ridge portion 23a is a portion located closest to the light exit side in the cover-side positioning portion 23. When the light source unit 3 is held inside the cover 2, the cover-side positioning portion 23 faces a light source-side positioning portion 67 formed in the heat sink 6 described later. Here, L represents a dimension from the cylindrical portion 21 of the cover 2 to the ridge portion 23 of the cover-side positioning portion 23 in a direction (Z direction in the drawing) perpendicular to the longitudinal direction of the illumination lamp 1, that is, a height dimension of the cover-side positioning portion 23. The angle of the inner angle of the cover-side positioning portion 23 with respect to the ridge portion 23a is defined as α, and the condition α <180 is satisfied.

As shown in fig. 1 to 3, the retaining base 7 includes: a base holding frame 71, the base holding frame 71 being attached to cover an opening at one end of the cover 2 and having an insulating property; and a holding terminal 72, the holding terminal 72 being provided upright from the base holding frame 71 in the longitudinal direction of the illumination lamp 1 and having conductivity. The holding terminal 72 is embedded in the base holding frame 71 by insert molding or the like. The holder housing 71 is provided with a screw hole 73, and the shaft of the screw 9 having a screw groove is inserted into the screw hole 73 and screwed into a screw hole 65a of the heat sink 6, which will be described later, to hold the holder 7 fixed to the light source assembly 3. The holding cap 7 may be fixed to the light source module 3 by a fixing member such as a rivet other than a screw, or the holding cap 7 may be fixed to the light source module 3 by fitting, screwing, or the like without using a fixing member.

The power supply base 8 includes: a power feeding base frame 81 attached to cover the opening of the other end of the cover 2, the power feeding base frame 81 having insulation properties; and a power supply terminal 82, the power supply terminal 82 being provided upright from the power supply base housing 81 in the longitudinal direction of the illumination lamp 1 and having conductivity. The power supply terminal 82 is embedded in the power supply base housing 81 by a method such as insert molding. The power feeding cap housing 81 is provided with screw holes 83, and the shaft portions of the screws 9 having screw grooves are inserted into the screw holes 83 and screwed into screw holes 65a of the heat sink 6, which will be described later, so that the power feeding cap 8 is fixed to the light source assembly 3. The power supply cap 8 may be fixed to the light source module 3 by a fixing member such as a rivet other than a screw, or the power supply cap 7 may be fixed to the light source module 3 by fitting, screwing, or the like without using a fixing member.

Further, the holding socket 103 holds the holding terminal 72, and the power supply socket 104 holds the power supply terminal 82, so that the lighting fixture 101 can hold the illumination lamp 1. In addition, at least the power supply jack 104 is electrically connected to the power supply terminal 82 while holding the power supply terminal 82.

As shown in fig. 2 and 3, when the retaining cap 7 is attached to one end of the cover 2 and the power feeding cap 8 is attached to the other end, an in-cover space 24 surrounded by the cover 2, the retaining cap 7, and the power feeding cap 8 is formed inside the cover 2. When the light source module 3 is held inside the cover 2, the cover interior space 24 is divided by the light source module 3 into two spaces, i.e., an emission-side space 25 facing the light source 4 and an appliance-side space 26 not facing the light source 4. The emission-side space 25 is surrounded by the inner circumferential surface of the cylindrical portion 21, the holding protrusion 22, the light source assembly 3, the holding base 7, and the power supply base 8.

As shown in fig. 2 and 4, the light source unit 3 includes: a light source 4; a substrate 5, wherein the substrate 5 is a long flat plate and is provided with a light source 4; and a heat sink 6, the heat sink 6 diffusing heat generated from the light source 4 to the outside of the illumination lamp 1 via the cover 2. The light emitted from the light source 4 of the light source unit 3 is directed to the emission side, passes through the emission side space 25 and the cylindrical portion 21, and is emitted to the outside of the illumination lamp 1. Further, the light source 4, the substrate 5, and the heat sink 6 are arranged in this order from the exit side to the appliance side.

The light source 4 is an element that emits light from a light-emitting surface, and a plurality of light sources are arranged in parallel along the longitudinal direction (the direction of arrow X) of the substrate 5. In embodiment 1, the light source 4 is an LED, and a pseudo-white LED (japanese: pseudo-white LED) in which a phosphor that converts blue light into yellow light is provided on an LED chip that emits blue light having a wavelength of 440 to 480nm and is packaged is used. The number, arrangement position, and type of the light sources 4 depend on the application of the illumination lamp 1, and therefore, the number, arrangement position, and type of the light sources 4 are not limited in the present invention. For example, 1 long organic electroluminescent element (hereinafter referred to as organic EL element) having a length in the longitudinal direction substantially equal to that of the substrate 5 may be used as the light source 4, and the organic EL element may be arranged such that the longitudinal direction thereof is parallel to the longitudinal direction of the substrate 5.

On the mounting surface of the substrate 5 on which the light sources 4 are mounted, electronic components (not shown) such as diodes, capacitors, fuses, or resistors are mounted, and wiring lines (not shown) for electrically connecting the respective light sources 4 and the respective electronic components are provided. The light sources 4 and the electronic components are electrically connected to the power supply terminal 82 via wiring lines. Therefore, power is supplied from the power supply device to the light source 4 via the power supply jack 104, the power supply terminal 82, and the wiring line, and the light source 4 is turned on.

The material of the substrate 5 is selected from a metal material such as an epoxy glass material, a phenolic paper material, a composite material, a ceramic material, or aluminum in consideration of material cost, design specifications, and the like. The mounting surface of the substrate 5 is coated with a resist having a reflectance higher than that of the material of the substrate 5.

In embodiment 1, the length dimension (the width dimension of the substrate 5) in the short side direction (the Y-axis direction in the drawing) of the substrate 5 is 11 [ mm ].

Fig. 6 is a perspective view of the heat sink according to embodiment 1 as viewed from one end portion (from the base point side of arrow X). Fig. 7 is a perspective view of the heat sink according to embodiment 1 as viewed from the other end portion (the front end side of arrow X). The heat sink 6 is a long member, and is configured by integrating a light source installation portion 61 which is an emission side surface of the heat sink 6, a pair of protrusion portions 62 which are provided standing from the light source installation portion 61, a pair of side wall portions 63 which are side surfaces of the heat sink 6, an arc portion 64 which is an appliance side surface of the heat sink 6, a screw fixing portion 65 which is provided standing from the

arc portion

64, and 4 jig fixing portions 66 which extend from the light source installation portion 61 to the appliance side. The arc portion 64 is formed with a light source-side positioning portion 67 over the entire longitudinal direction (the direction of arrow X), and a screw hole 65a is formed between the screw fixing portion 65 and the jig fixing portion 66 (see fig. 4). The shape of the cross section of the heat sink 6 taken perpendicularly to the longitudinal direction (the direction of the arrow X) is always as shown in fig. 4 regardless of the position in the longitudinal direction.

The light source installation portion 61 has a flat plate shape, and a substrate 5 is provided on a surface located on the emission side when the heat sink 6 is held inside the cover 2 so that the light source 4 faces the emission side as shown in fig. 2 to 4. As a method of disposing the substrate 5 in the light source installation portion 61, a method of adhering and fixing the substrate 5 by an adhesive member such as an adhesive or a double-sided tape, a method of providing a screw hole in the substrate 5 and the heat sink 6 and screwing them, or the like can be employed.

A pair of protrusions 62 is provided upright on the emission side of the light source installation portion 61 over the entire longitudinal direction (the direction of arrow X). The interval between the projections 62 is longer than at least the width of the substrate 5 in the short side direction (the direction of arrow Y), and the substrate 5 is disposed between the projections 62. Therefore, positioning when the substrate 5 is provided is facilitated by the projection 62. When the light source module 3 is held inside the cover 2, the projection 62 faces the distal end surface of the emission-side holding projection 22.

Further, at both ends of the light source installation portion 61 in the short side direction (the direction of the arrow Y), the side wall portions 63 protrude in the appliance side direction over the entire longitudinal direction. The end portions of the side wall portion 63 in the appliance-side direction are integrated with both end portions of the arcuate portion 64, respectively. The curvature of the arc portion 64 is substantially the same as the curvature of the inner circumferential surface of the cover 2, and when the light source unit 3 is held inside the cover 2, the arc portion 64 faces the cylindrical portion 21.

On the surface of the light source installation portion 61 on the appliance side, 4 jig fixing portions 66 are provided so as to protrude toward the appliance side in the entire longitudinal direction, and on the surface of the arc portion 64 on the emission side, a screw fixing portion 65 is provided so as to protrude toward the emission side in the entire longitudinal direction. Screw holes 65a are formed between the screw fixing portions 65 and the two jig fixing portions 66 near the light source 4 among the jig fixing portions 66. The heat sink 6, which is a part of the light source assembly 3, is fixed to the retaining cap 7 or the power feeding cap 8 by inserting the screws 9, which are inserted into the screw holes 73 formed in the retaining cap housing 71 or the screw holes 83 formed in the power feeding cap housing 81, into the screw holes 65 a. When the retaining cap 7 or the power feeding cap 8 is fixed to the heat sink 6 in a state where the heat sink 6 is fixed to the inside of the cover 2, the retaining cap 7 is fixed to cover one end portion of the cover 2, and the power feeding cap 8 is fixed to cover the other end portion of the cover 2.

As shown in fig. 5, in embodiment 1, the light source side positioning portion 67 is a groove recessed in a substantially V-shape in cross section. The light source side positioning portion 67 is formed of a pair of groove slopes 67a (corresponding to a pair of slopes of the present invention) and a recessed portion 67b, and the recessed portion 67b is sandwiched by the pair of groove slopes 67a and corresponds to a bottom portion of the groove. The recessed portion 67b is a portion located closest to the emission side in the light source side positioning portion 67. When the light source unit 3 is held inside the cover 2, the center axis O, the center of the light source 4 in the short-side direction, the ridge portion 23a of the cover-side positioning portion 23, and the recess 67b of the light source-side positioning portion 67 are arranged on a straight line in a cross section perpendicular to the long-side direction. Here, the dimension from the concave portion 67b to the portion of the arc portion 64 located closest to the fixture side in the direction perpendicular to the longitudinal direction of the illumination lamp 1 (Z direction in the drawing), that is, the depth dimension of the light source side positioning portion 67 is D, and is formed such that: the relation D.ltoreq.L is satisfied with respect to the height L of the cover-side positioning portion 23 of the cover 2. The angle of the groove of the light source side positioning portion 67 centering on the recess 67b is β, and the angle is formed by: the relation of β ≧ α and the relation of β <180 are satisfied in comparison with the angle α of the inner angle of the cover-side positioning portion 23 centered on the ridge portion 23 a.

It is preferable that the material of the heat sink 6 is a metal material having excellent thermal conductivity and rigidity and a small linear thermal expansion coefficient, and in embodiment 1, the heat sink 6 is formed using aluminum. A high-reflection film (not shown) having a higher reflectance than the material of the heat sink 6 is formed on the surface of the heat sink 6, and in embodiment 1, the high-reflection film is a white colored alumina layer.

Here, since the cover 2 and the light source unit 3 are formed of different materials and in different manufacturing processes, they have different dimensional variations. Therefore, in order to reliably attach the light source module 3 to the inside of the cover 2, a predetermined gap (also referred to as a gap or a clearance) is provided between the inner peripheral surface of the cover 2 and the light source module 3. This gap will be described with reference to fig. 4 and 5. In the cover 2 and the light source unit 3 according to embodiment 1, gaps are provided at least at 1 arbitrary position between the holding protrusions 22 and the protrusions 62, between the holding protrusions 22 and the light source installation portion 61, and between the cylindrical portion 21 and the arc portion 64. By providing a gap between the cover 2 and the light source module 3, it is possible to absorb dimensional variations in manufacturing of the cover 2 and the light source module 3, or to smoothly insert the light source module 3 into the cover 2, thereby improving assemblability. Further, since the size of the gap is affected by variations in the size of the cover 2 and the light source unit 3, variations in the size of the gap occur in each of the illumination lamps 1. Therefore, the position or posture of the light source unit 3 with respect to the cover 2 varies depending on the product, and the performance of the illumination lamp 1 varies.

However, in the illumination lamp 1 according to embodiment 1, the cover-side positioning portion 23 is formed in the cylindrical portion 21 of the cover 2, the light source-side positioning portion 67 is formed in the arc portion 64 of the heat sink 6, and the depth dimension D of the light source-side positioning portion 67 is small relative to the height dimension L of the cover-side positioning portion 23. In other words, the light source side positioning portion 67 is formed not to completely house the cover side positioning portion 23. Therefore, in the illumination lamp 1 according to embodiment 1, the cover 2 and the light source unit 3 have different dimensional variations, and when the light source unit 3 is held in the cover 2, even if a gap is formed between the cover 2 and the light source unit 3, the ridge portion 23a of the cover-side positioning portion 23 is pressed against the recess 67b of the light source-side positioning portion 67, so that the ridge portion 23a slides on the groove slope surface 67a, and the ridge portion 23a abuts against the recess 67b, whereby the light source unit 3 is stably held and fixed in the cover 2. Therefore, in the illumination lamp 1 according to embodiment 1, when the light source module 3 is inserted into the cover 2, the position of the light source module 3 with respect to the cover 2 can be uniquely determined at the position where the ridge portion 23a abuts against the recessed portion 67b, and therefore, the positional deviation of the light source module 3 with respect to the cover 2 can be easily suppressed. In other words, the performance of the illumination lamp 1 can be prevented from being inconsistent.

In addition, even if an external force is applied to the light source module 3 in the short-side direction (direction of arrow Y) of the illumination lamp 1 in a state where the ridge portion 23a is in contact with the recess 67b, the groove slope 67a comes into contact with the ridge portion 23a, and the displacement of the light source module 3 in the short-side direction can be reliably restricted. Therefore, the light source unit 3 is stably held and fixed inside the cover 2 at the position where the ridge portion 23a abuts against the recess 67 b.

As described above, in the illumination lamp 1 according to embodiment 1, compared to the conventional illumination lamp in which the cover-side positioning portion 23 and the light-source-side positioning portion 67 are not formed, the relative position deviation of the light source 4 with respect to the cover 2 can be suppressed, and the light source unit 3 can be stably held and fixed inside the cover 2. Therefore, variations in performance are small, and an illumination lamp with stable quality can be provided.

In the conventional illumination lamp in which the cover-side positioning portion 23 and the light source-side positioning portion 67 are not formed, the gap between the cover 2 and the heat sink 6 is almost eliminated due to the combination of dimensional variations of the cover and the heat sink 6, and a large frictional force is generated between the cover 2 and the heat sink 6, and it may be difficult to insert the heat sink 6 into the cover 2. However, in the illumination lamp 1 of embodiment 1, the cover-side positioning portion 2, which is a protrusion having the ridge portion 23a, is formed in the cover 2 made of resin, and the light-source-side positioning portion 67, which is a groove having the recess 67b, is formed in the heat sink 6 made of metal. Therefore, even in a state where the gap between the cover 2 and the heat sink 6 is almost eliminated, the light source module 3 can be pressed from the appliance side to the irradiation side, the relatively soft resin ridge portion 23a can be crushed by the relatively hard metal recess 67b, and a new gap can be formed, so that the light source module 3 can be easily inserted into the cover 2.

In the illumination lamp 1 according to embodiment 1, when the light source unit 3 is held inside the cover 2, the concave portions 67b are arranged so that the center axis O, the center of the light source 4 in the short side direction, the ridge portion 23a of the cover-side positioning portion 23, and the concave portion 67b of the light source-side positioning portion 67 are aligned on a straight line in a cross section perpendicular to the long side direction. Therefore, the light source 4 is positioned at the center of the illumination lamp 1 in the short-side direction at the position where the concave portion 67b abuts against the ridge portion 23a, and the deviation of the optical axis of light in the short-side direction of the illumination lamp 1 can be suppressed.

When the adhesive is applied between the light source unit 3 and the cover 2, the light source unit 3 is pressed before the applied adhesive is cured to bring the ridge portion 23a into contact with the recess 67b, and the adhesive is cured in a state where the ridge portion 23a is in contact with the recess 67 b. By such an assembly, the light source module 3 and the cover 2 can be more firmly fixed in a state where the ridge portion 23a is in contact with the recess 67b, and variations in performance can be further reduced.

Fig. 8 is an enlarged view of the cover-side positioning portion 23 and the light source-side positioning portion 67 when the light source assembly is biased to the emission side in the illumination lamp 1 according to embodiment 1. When the light source installation portion 61 of the light source unit 3 abuts against the holding projection 22 of the cover 2, that is, when the light source unit 3 is biased to the emission side, it is more preferable that: when the width of the gap formed between the ridge portion 23a and the recessed portion 67b is h, the dimension L of the protruding height of the cover-side positioning portion 23 satisfies the relationship of L > h, and the dimension D of the depth of the light source-side positioning portion 67 satisfies the relationship of D > h. By satisfying this relationship, when the light source module 3 is held inside the cover 2, the ridge portion 23a of the cover-side positioning portion 23 is surely positioned between the groove slope surfaces 67a of the light source-side positioning portion 67, so that an effect that the positional deviation of the light source module 3 with respect to the cover 2 can be easily suppressed can be reliably obtained.

In addition, in the illumination lamp 1 of embodiment 1, the cover-side positioning portion 23 is a protrusion having the ridge portion 23a and the protrusion slope 23b, and the light source-side positioning portion 67 is a groove having the groove slope 67a and the recess 67b, but the present invention is not limited thereto, and may be: cover side positioning portion 23 is a groove having a groove slope and a recessed portion as in light source side positioning portion 67 of embodiment 1, and light source side positioning portion 67 is a protruding portion having a protruding slope and a ridge as in cover side positioning portion 23 of embodiment 1. In this case, the height dimension of the light source side positioning portion 67 is a value equal to or greater than the depth dimension of the cover side positioning portion 23. The angle of the inner angle of light source side positioning portion 67 with respect to the ridge portion is equal to or smaller than the angle of the outer angle of cover side positioning portion 23 with respect to the recess portion.

The shapes of the cover 2 and the heat sink 6 are not limited to those of embodiment 1, and the cover-side positioning portions 23 and the light source-side positioning portions 67 may be formed, and may be, for example, the shapes described in modifications 1 to 5 of embodiment 1. In the modifications 1 to 5 of embodiment 1, the shapes of the cover 2 and the heat sink 6 are different from each other, and the other configurations are substantially the same as those of embodiment 1, and therefore, the description thereof is omitted.

Modification 1 of embodiment 1.

Fig. 9 is a sectional view of an illumination lamp according to modification 1 of embodiment 1. The illumination lamp 1a according to modification 1 of embodiment 1 is different from the illumination lamp 1 according to embodiment 1 in that two jig fixing portions 66 are provided for the heat sink 6 a. The shape of the cover 2a of modification 1 of embodiment 1 is substantially the same as that of the cover 2 of embodiment 1. Since the heat sink 6a of modification 1 of embodiment 1 does not have the jig fixing portions 66 on which the screw holes 65a are not formed, the shape is simpler than the heat sink 6 of embodiment 1, and the formability can be expected to be improved compared to the heat sink 6.

Modification 2 of embodiment 1.

Fig. 10 is a sectional view of an illumination lamp according to modification 2 of embodiment 1. The illuminating lamp 1b according to modification 2 of embodiment 1 is different from the illuminating lamp 1 according to embodiment 1 in that the light source mounting portion 61 and the arc portion 64 of the heat sink 6b are short, the protruding portions 62 extend from both ends in the short direction (direction of arrow Y) of the light source mounting portion 61, and the inner peripheral surfaces of both ends of the arc portion 64 are integrated with the side wall portion 63. The holding projection 22 of the cover 2b is located closer to the appliance than the cover 2 of embodiment 1, and a distance H2 from a plane on the emission side of the holding projection 22 of the cover 2b to a plane parallel to the plane on the emission side and passing through the central axis O is longer than the distance H of embodiment 1. The surface of the holding projection 22 on the appliance side faces the surface of the arc portion 64 on the ejection side at the end in the short side direction. Since the holding projection 22 of the cover 2b of modification 2 of embodiment 1 is located closer to the appliance than the cover 2 of embodiment 1, the irradiation angle of the illumination lamp 1b can be increased.

Modification 3 of embodiment 1.

Fig. 11 is a sectional view of an illumination lamp according to modification 3 of embodiment 1. The illumination lamp 1c according to modification 3 of embodiment 1 is different from the illumination lamp 1b according to modification 2 of embodiment 1 in that there are two jig fixing portions 66 of the heat sink 6 c. The shape of the cover 2c according to modification 3 of embodiment 1 is substantially the same as that of the cover 2b according to modification 2 of embodiment 1. Since the heat sink 6c according to modification 3 of embodiment 1 is not provided with the jig fixing portions 66 in which the screw holes 65a are not formed, the shape is simpler than that of the heat sink 6b according to modification 2 of embodiment 1, and the formability can be expected to be improved compared to the heat sink 6 b.

Modification 4 of embodiment 1.

Fig. 12 is a sectional view of an illumination lamp according to modification 4 of embodiment 1. The illumination lamp 1d according to modification 4 of embodiment 1 is different from the illumination lamp 1 according to embodiment 1 in that the jig fixing portion 66 of the heat sink 6d, in which the screw hole 65a is formed, is integrated with the screw fixing portion 65. The shape of the cover 2d according to modification 4 of embodiment 1 is substantially the same as that of the cover 2 according to embodiment 1. Since the heat sink 6d according to modification 4 of embodiment 1 has the light source installation portion 61 and the arc portion 64 connected by the screw fixing portion 65, the rigidity of the heat sink is improved, and warping and bending of the illumination lamp are less likely to occur.

Modification 5 of embodiment 1.

Fig. 13 is a sectional view of an illumination lamp according to modification 5 of embodiment 1. Fig. 14 is an enlarged perspective view of the other end portion (the front end side of arrow X) of the heat sink according to modification 5 of embodiment 1. The illumination lamp 1e according to modification 5 of embodiment 1 is different from the illumination lamp 1 according to embodiment 1 in that the light source side positioning portion 67 of the heat sink 6e, the cover side positioning portion 23 of the cover 2e, and the central axis O of the illumination lamp 1e are not located on a straight line, and the light source side positioning portion 67 and the cover side positioning portion 23 are provided at two locations, respectively. Even in the case of modification 5 of embodiment 1, the ridge portions 23a of the cover-side positioning portions 23 slide on the groove slope surfaces 67a by pressing the light source assembly 3 toward the appliance side until the ridge portions 23a of the cover-side positioning portions 23 come into contact with the recessed portions 67b of the light source-side positioning portions 67, so that the same effects as those of embodiment 1 can be obtained.

In the illumination lamp 1 according to embodiment 1, since the light source side positioning portion 67 and the cover side positioning portion 23 are provided only at the position 1, the light source unit 3 is inclined with respect to the cover 2 with a portion where the ridge portion 23a abuts against the recess portion 67b as a fulcrum. The tilt of the light source assembly 3 with respect to the housing 2 also causes variations in the optical characteristics. However, in the illumination lamp 1e according to modification 5 of embodiment 1, since the light source side positioning portion 67 and the cover side positioning portion 23 are provided at two locations, the ridge portion 23a and the recessed portion 67b are also provided at two locations, and the light source unit 3 can be prevented from being inclined with respect to the cover 2e, and variations in optical characteristics can be further suppressed. In addition, in modification 5 of embodiment 1, the light source side positioning portion 67 and the cover side positioning portion 23 are provided at two locations, respectively, and even if there are 3 or more locations, the same effect can be obtained, and by forming a plurality of light source side positioning portions 67 and cover side positioning portions 23, the effect of suppressing the light source module from tilting with respect to the cover can be obtained.

Embodiment 2.

Fig. 15 is a sectional view of the illumination lamp of embodiment 2. The illumination lamp 1f according to embodiment 2 is different from the illumination lamp 1 according to embodiment 1 in that the cylindrical portion 21 and the holding projection 22 of the cover 2f are formed of different materials. The structure of illumination lamp 1f according to embodiment 2 other than cover 2f is substantially the same as that of heat sink 6 according to embodiment 1. The illumination lamp 1f according to embodiment 2 can be attached to the lighting apparatus 101 according to embodiment 1, and the illumination lamp 1f is turned on by supplying power from the lighting apparatus 101.

The material forming the cylindrical portion 21 is referred to as a 1 st cap material. The 1 st cover material is a material having light transmittance, as in the case of the cover 2 of embodiment 1, and examples thereof include a resin having light transmittance such as polycarbonate or acrylic resin. In addition, the cover-side positioning portion 23 is also formed of the 1 st cover material.

The material forming the holding protrusion 22 is referred to as a 2 nd cover material. The 2 nd cover member is a member having a higher reflectance than the 1 st cover member, and examples thereof include a highly reflective resin material having a base material of a resin such as polycarbonate, acrylic resin, or polyethylene terephthalate and a material for improving the reflectance such as titanium dioxide mixed in a predetermined weight ratio.

The cover 2f having the cylindrical portion 21 and the holding protrusion 22 formed of different materials is manufactured by, for example, two-color molding. Here, the two-color molding refers to a method of: for example, two different resin compositions are melt-extruded from a plurality of different extruders, integrated in 1 die connected to the plurality of extruders, and then cooled and solidified to obtain a composite molded article of the two resin compositions, which is melt-bonded and integrated on the surface. In embodiment 2, the 1 st cap material is extruded in a molten state from an extruder for forming the cylindrical portion 21 and the cap-side positioning portion 23, the 2 nd cap material is extruded in a molten state from an extruder for forming the holding protrusion 22, and after the materials are integrated in 1 die, they are cooled and solidified to form the cap 2 f.

In addition, there are the following paths of light: as shown by arrow a in fig. 15, a part of the light emitted from the light source 4 is reflected by the cylindrical portion 21 and returned to the appliance side, and is further reflected by the holding projection 22 and irradiated to the outside of the illumination lamp 1 f. Since the holding protrusions 22 of the illumination lamp 1f of embodiment 2 have a higher reflectance than the cylindrical portion 21, the amount of light reflected by the holding protrusions 22 increases compared to an illumination lamp in which the cylindrical portion 21 and the holding protrusions 22 are formed of the same material as in embodiment 1. Therefore, compared to the illumination lamp 1 of embodiment 1, the illumination lamp 1f of embodiment 2 has an increased number of light beams of light emitted from the illumination lamp 1f, and the light emission efficiency of the illumination lamp 1f can be improved.

The shape of the cover for improving the light emission efficiency of the illumination lamp is not limited to the shape of the cover 2f of embodiment 2, and the holding projection 22 may be formed of a material having a high reflectance, and may be, for example, the shapes described in modifications 1 to 3 of embodiment 2. Note that, in the modifications 1 to 3 of embodiment 1, the shape of the cover 2 is different from each other, and the other configurations are substantially the same as those of embodiment 2, and therefore, the description thereof is omitted.

Modification 1 of embodiment 2.

Fig. 16 is a sectional view of an illumination lamp according to modification 1 of embodiment 2. The illumination lamp 1g according to modification 1 of embodiment 2 is different from the illumination lamp 1f according to embodiment 2 in that a part of the cylindrical portion 21 of the cover 2g is formed of a 2 nd cover material.

The cylindrical portion 21 of the cover 2g is formed in a cylindrical shape by integrating a pair of holding protrusions 22, an emission-side light transmission portion 21a located on the emission side of the holding protrusions 22, and an appliance-side light transmission portion 21b located on the appliance side of the holding protrusions 22. An end surface of the holding protrusion 22 exposed to the outer peripheral surface of the cylindrical portion 21 is referred to as an exposed-side end surface 22 a. The holding projection 22 is located closer to the fixture than the center axis O of the illumination lamp 1 g. The pair of holding protrusions 22, the emission-side light transmission portion 21a, and the device-side light transmission portion 21b are formed so as to extend in the entire longitudinal direction (the direction of the arrow X) of the cover 2g, and the cross section of the cover 2 cut perpendicularly to the longitudinal direction is always the cross-sectional shape shown in fig. 16.

The emission side light transmission section 21a and the device side light transmission section 21b are formed of the 1 st cover material described in embodiment 2. The holding projection 22 is formed of the 2 nd cover material described in embodiment 2. Therefore, the exposed side end surface 22d of the holding projection 22 on the outer periphery of the cylindrical portion 21 of the cover 2g is formed of the 2 nd cover material, and has a surface formed of the 2 nd cover material on the outer periphery of the illumination lamp 1.

Since holding projection 22 of cover 2g has a higher reflectance than emission-side translucent portion 21a, illumination lamp 1g according to modification 1 of embodiment 2 can obtain an effect of improving the light emission efficiency of illumination lamp 1g for the same reason as that of embodiment 2. Further, since the reflectance of the 2 nd cover member is higher than that of the 1 st cover member and the appearance is different, the exposed side end surface 22a of the holding projection 22 exposed to the outer periphery of the illumination lamp 1g serves as a mark for specifying the orientation of the illumination lamp 1g when the illumination lamp 1g is attached to the lighting fixture 101, and the user can easily attach the illumination lamp 1g to the lighting fixture 101 by using the mark.

Modification 2 of embodiment 2.

Fig. 17 is a sectional view of an illumination lamp according to modification 2 of embodiment 2. The illuminating lamp 1h according to modification 2 of embodiment 2 is different from the illuminating lamp 1g according to modification 1 of embodiment 2 in that the appliance-side reflecting portion 21c of the cover 2h corresponding to the appliance-side translucent portion 21b is made of the same material as the holding protrusion 22.

The cylindrical portion 21 of the cover 2h is formed in a cylindrical shape by integrating the emission-side light transmission portion 21b and the appliance-side reflection portion 21 c. The light transmission portion 21a on the light exit side of the cover 2h is formed of the cover 1 described in embodiment 1, and the device-side reflection portion 27 and the holding projection 22 are formed of the cover 2 described in embodiment 1. Therefore, in illumination lamp 1h according to modification 2 of embodiment 2, a surface made of the 2 nd cover material is also exposed on the outer periphery of cover 2 h.

For the same reason as in modification 1 of embodiment 1, illumination lamp 1h of modification 2 of embodiment 2 can also achieve the effect of improving the light emission efficiency of illumination lamp 1h and the effect of allowing the user to easily attach illumination lamp 1h to lighting fixture 101.

Further, since the 2 nd cover material does not need to have translucency, a material that improves reflectance may be mixed, and a material that improves other physical properties may be mixed. In particular, by mixing a material for improving thermal conductivity such as a thermally conductive filler with the 2 nd cover material, the thermal conductivity of the device-side reflection portion 27 is improved, thereby improving the thermal conductivity from the heat sink 6 to the cover 2h and improving the heat radiation performance of the illumination lamp. Further, by mixing a material having high rigidity such as a glass filler with the material of the 2 nd cover, the rigidity of the cover 2 can be improved.

Modification 3 of embodiment 2.

Fig. 18 is a sectional view of an illumination lamp according to modification 3 of embodiment 2. The illuminating lamp 1i according to modification 3 of embodiment 2 is different from the illuminating lamp 1f according to embodiment 2 in that the plane on the emission side is inclined with respect to the plane on the appliance side so that the thickness of the holding projection 22 increases as it approaches the inner circumferential surface of the cover 2 i.

The holding protrusion 22 of modification 3 of embodiment 2 is formed such that the plane on the injection side is inclined at an angle θ with respect to the plane on the appliance side, and the thickness increases as the inner circumferential surface of the cylindrical portion 21 approaches. In embodiment 1, the angle θ is about 15 degrees.

As shown in fig. 18, since the light emitted from the light source 4 spreads out at the irradiation angle γ symmetrically with respect to the axis (the direction of the arrow Z) perpendicular to the light emitting surface of the light source 4, among the light irradiated from the illumination lamp 1 as in embodiment 1, the light irradiated from outside the range of the irradiation angle γ of the light source 4 is reflected light reflected by the substrate 5, the heat sink 6, the cylindrical portion 21, or the holding protrusion 22. Further, the ratio of light with a large number of reflections among the light irradiated from the illumination lamp 1 increases as the distance from the irradiation angle γ increases. Therefore, in the section δ from the range of the irradiation angle γ to the holding projection 22, the closer to the holding projection 22, the less the light beam of the irradiated light, and the larger the difference between the light beam of the irradiated light and the light beam of the irradiated light from the range of the irradiation angle γ. At this time, if the difference between the light beam at an arbitrary portion in the section δ and the light beam irradiated from the range of the irradiation angle γ is increased to a certain degree or more, the user feels that the portion is dim and the brightness of the illumination lamp 1 is uneven. In particular, in the illumination lamp 1, since there is a portion where light is not irradiated due to the holding protrusion 22 and the heat sink 6, a portion where a faint is perceived is more conspicuous.

However, in the illumination lamp 1i according to modification 3 of embodiment 2, since the thickness of the holding projection 22 is increased as the emission-side holding projection 22 is directed toward the inner peripheral surface of the cover 2i, the section δ can be narrowed as compared with the case where the thickness of the emission-side holding projection 22 is uniform as in the illumination lamp 1 according to embodiment 1, and a portion where the user feels faint can be eliminated, and the user can be prevented from feeling that there is unevenness in brightness.

In the modification 3 of embodiment 2, the angle θ is set to about 15 degrees, but the user feels the dark portion depending on the shape of the surface of the light source unit 3 facing the emission-side space 25 and the user's feeling, and therefore the angle θ is not limited to 15 degrees and may be any angle. However, as described above, the area that the user feels dimly is formed only outside the range of the irradiation angle γ of the light source 4, and if the holding projection 22 enters the range of the irradiation angle γ of the light source 4, the irradiation angle of the illumination lamp 1i becomes smaller than the irradiation angle of the light source 4, and therefore, it is preferable to avoid setting the angle θ to such an angle that the holding projection 22 enters the range of the irradiation angle γ. Specifically, the angle θ is preferably set to 90- (γ/2) degrees or less, and for example, when the irradiation angle γ is 120 degrees, the angle θ is preferably set to 30 degrees or less.

In the above-described embodiment and modification, the straight tube lamp with the base shaped in JEL801 was described, but the present embodiment can be applied to a straight tube lamp with a base shaped in JEL802 or another straight tube LED, for example. The present embodiment can be applied to caps having other shapes.

While the embodiment and the modification have been described above, two or more of the embodiment and the modification may be combined and implemented. Alternatively, 1 of these embodiments and modifications may be partially implemented. Alternatively, two or more of the embodiments and the modifications may be partially combined and implemented. The present invention is not limited to the embodiments and the modifications, and various modifications can be made as necessary.

Description of the reference numerals

1: an illuminating lamp; 1a to 1 i: an illuminating lamp; 2: a cover; 2a to 2 i: a cover; 3: a light source assembly; 4: a light source; 5: a substrate; 6: a heat sink; 6a to 6 e: a heat sink; 7: holding the lamp cap; 8: a power supply lamp holder; 9: a screw; 21: a cylindrical portion; 21 a: an emission side light transmission section; 21 b: a device-side light-transmitting portion; 21 c: an appliance-side reflection unit; 22: a holding protrusion; 22 a: exposing the side end face; 23: a cover side positioning portion; 23 a: a ridge portion; 23 b: a protruding ramp; 24: a housing interior space; 25: an emission side space; 26: an appliance-side space; 61: a light source setting part; 62: a protrusion portion; 63: a sidewall portion; 64: a circular arc portion; 65: a screw fixing portion; 65 a: a screw hole; 66: a clamp fixing part; 67: a light source side positioning section; 67 a: a groove slope; 67 b: a recess; 71: a holder frame body; 72: a holding terminal; 73: a screw hole; 81: a power supply lamp holder frame; 82: a power supply terminal; 83: a screw hole; 100: an illumination device; 101: a lighting fixture; 102: an appliance main body; 103: a retention socket; 104: a power supply socket; 105: power supply box.

Claims

1. A lighting lamp, comprising:

a light source unit having an elongated shape and a light source arranged on a surface parallel to the longitudinal direction;

a light source side positioning portion formed in a part of a surface of an arc portion of the light source assembly located on an opposite side with respect to a surface on which the light source is arranged, in an entire longitudinal direction of the light source assembly;

a cover that is hollow and elongated and holds the light source assembly inside so that an inner peripheral surface of the cover faces a surface of the light source assembly on which the light source side positioning portion is formed; and

a cover side positioning portion formed at a position in the inner peripheral surface of the cover opposite to the light source side positioning portion,

a portion of the surface of the circular arc portion other than the light source side positioning portion faces a portion of the inner peripheral surface of the cover other than the cover side positioning portion at a predetermined interval,

either one of the light source side positioning portion and the cover side positioning portion is a projection having a ridge portion at a tip end thereof,

the other of the light source side positioning portion and the cover side positioning portion is a groove having a recess sandwiched by a pair of inclined surfaces,

the height dimension of the projection and the depth dimension of the groove are respectively a dimension larger than the space,

the ridge portion abuts against the recess portion.

2. The illumination lamp according to claim 1, wherein,

in a cross section perpendicular to the longitudinal direction, a center of the light source in the short-side direction of the light source unit, a central axis of the cover, the ridge portion, and the recess portion are arranged on a straight line.

3. The illumination lamp according to claim 1, wherein,

the light source side positioning portion and the cover side positioning portion are formed at a plurality of portions, respectively.

4. The illumination lamp according to any one of claims 1 to 3,

either one of the light source side positioning portion and the cover side positioning portion is a protrusion having the ridge portion at a tip end thereof and having a substantially triangular cross section,

the other of the light source side positioning portion and the cover side positioning portion is a substantially V-shaped groove having the concave portion sandwiched by the pair of inclined surfaces,

the angle of the groove with the concave portion as the center is equal to or greater than the angle of the inner angle of the protrusion with the ridge portion as the center.

5. The illumination lamp according to any one of claims 1 to 3,

the light source side positioning portion is a groove having the pair of inclined surfaces and the recessed portion,

the cover-side positioning portion is a projection having the ridge portion at a tip end thereof.

6. The illumination lamp according to claim 4, wherein,

7. The illumination lamp according to claim 5, wherein,

the surface of the light source assembly forming the light source side positioning part is made of metal,

the cover is made of resin.

8. The lighting lamp according to claim 6, wherein,

the cover is made of resin.

9. A lighting device, wherein the lighting device is provided with a lighting lamp and a power supply device,

the illumination lamp is provided with: a light source unit having an elongated shape and a light source arranged on a surface parallel to the longitudinal direction;

the ridge portion abuts against the recessed portion,

the power supply device supplies power to the light source.