JP2012185943A - Lamp and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily integrate a cover and a base while restraining generation of distortion at a part for the cover and the base to be engaged.SOLUTION: The cover 200 includes a bent part 210 with an end part in a lateral direction of the cover 200 bent into inside the cover 200. An engaging part 410 for engaging with the bent part 210 in linear contact in a longitudinal direction of the cover 200 is formed at an end part in a lateral direction of the base 400 to retain the cover 200.

Description

  The present invention relates to a lamp and a lighting device using a semiconductor light emitting element such as a light emitting diode (LED).

  In recent years, semiconductor light emitting devices such as LEDs have been used in various lamps as highly efficient and space-saving light sources.

  An LED lamp using such an LED includes an LED module (light-emitting module), and a straight-tube LED lamp (straight-tube LED lamp) and a light bulb are selected by appropriately selecting the shape of the LED module. Shaped fluorescent lamps (bulb-shaped LED lamps) have been proposed. In any lamp, an LED module configured by arranging a plurality of LEDs on a substrate is used. For example, Patent Document 1 discloses a conventional straight-tube LED lamp.

JP 2010-003683 A

  The straight tube LED lamp described in Patent Literature 1 includes a base (base) for holding a light source unit (light emitting module) and a translucent cover. The base is configured to be fitted to the cover by a structure inserted into the cover, and the cover is held by the base. For this reason, the base and the cover are separable. The cover having such a configuration has a problem that it is easily bent in the longitudinal direction of the cover due to heat generated during lamp operation.

  When the longitudinal direction of the cover is bent, distortion occurs in a portion where the cover and the base are engaged with each other, which causes a problem that the cover is easily detached from the base. In addition, if the cover is bent and distortion occurs in the portion where the cover and the base are engaged as described above, the cover and the base are not integrated, which may cause light leakage. . For this reason, it is preferable that distortion does not occur as much as possible in the portion where the cover and the base are engaged.

  The present invention has been made to solve such a problem, and can easily integrate the cover and the base while suppressing the occurrence of distortion at the portion where the cover and the base are engaged. An object of the present invention is to provide a lamp and a lighting device that can perform the above.

  In order to achieve the above object, a lamp according to an aspect of the present invention includes a long base that holds a light emitting module, and a long cover that covers the light emitting module. An end portion in the short direction of the cover has a bent portion that bends inward of the cover, and the end portion in the short direction of the base holds the cover in the longitudinal direction of the cover so as to hold the cover. An engaging portion that engages with the bent portion by line contact is formed.

  That is, the cover has a bent portion where an end portion in a short direction of the cover is bent inward of the cover. Therefore, the bending of the cover in the longitudinal direction can be suppressed, and the occurrence of distortion at the portion where the cover and the base are engaged can be suppressed.

  Furthermore, an engaging portion that engages with the bent portion in line with the longitudinal direction of the cover is formed at the end of the base in the short direction so as to hold the cover. With this configuration, when the cover and the bent portion are integrated by sliding the cover in the longitudinal direction of the cover, the frictional force generated by the contact between the bent portion and the engaging portion can be extremely reduced. . With the above configuration, the cover and the base can be easily integrated (assembled) while suppressing the occurrence of distortion at the portion where the cover and the base are engaged.

  Preferably, the cover is configured to be elastically deformed in a short direction of the cover.

  Preferably, the bent portion and the engaging portion of the base are engaged with each other when the distal end portion of the bent portion presses the engaging portion in the short direction of the cover.

  Thereby, the joint strength of a cover and a base can be improved.

  Preferably, the engaging portion is provided in a region outside a range of a ½ beam angle of light emitted from the light emitting module.

  Preferably, the engaging portion is formed with a groove having a shape similar to the shape of the bent portion, and the groove portion of the engaging portion is in line contact with the bent portion in the longitudinal direction of the cover.

  Thereby, the joint strength between the cover and the base can be further improved.

  Preferably, the contour shape of the cross section of the distal end portion in the short direction of the bent portion is an arc shape.

  Preferably, the cover is further formed with a long guide part configured to cover the engaging part from the light irradiation side of the light emitting module in the longitudinal direction of the cover.

  Thereby, the bending of the cover in the longitudinal direction can be suppressed. Further, when the cover and the bent portion are integrated by sliding the cover in the longitudinal direction of the cover, the sliding direction of the cover can be easily guided to a specific direction.

  Preferably, the guide portion is provided in a region outside a range of a ½ beam angle of light emitted from the light emitting module.

  A lighting device according to one embodiment of the present invention includes the above-described lamp.

  According to the present invention, it is possible to easily integrate the cover and the base while suppressing the occurrence of distortion at the portion where the cover and the base are engaged.

FIG. 1 is a perspective view showing an appearance of a lamp according to the first embodiment. FIG. 2 is a perspective view of the housing according to the first embodiment. FIG. 3 is a cross-sectional view of the lamp according to the first embodiment. FIG. 4 is a perspective view of the base according to the first embodiment. FIG. 5 is a plan view of the LED module according to the first embodiment. FIG. 6 is a plan view showing a plurality of LED modules. FIG. 7 is an enlarged view of a part of FIG. FIG. 8 is a cross-sectional view of the cover and the base when the cover and the base are not integrated. FIG. 9 is a diagram for explaining a process when the cover and the base are integrated. FIG. 10 is a view showing a cross section of the elastically deformed cover. FIG. 11 is a perspective view illustrating a configuration of a lighting device according to the second embodiment. FIG. 12 is an enlarged view of a portion where the cover and the base are engaged in Modification A. FIG. FIG. 13 is a perspective view of a housing according to Modification B. FIG. FIG. 14 is a cross-sectional view of a housing according to Modification B. FIG. 15 is an enlarged view of a part of FIG. FIG. 16 is a diagram for explaining a process when the cover and the base are integrated. FIG. 17 is an enlarged view of a part of FIG. 18 is a perspective view of an LED module according to Modification D. FIG. FIG. 19 is a diagram illustrating a configuration of a base according to Modification E. FIG. 20 is a diagram illustrating a configuration of a base according to Modification F.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof may be omitted.

  It should be noted that the dimensions, materials, shapes, relative arrangements, and the like of the constituent elements exemplified in the embodiments are appropriately changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. It is not limited to those examples. Moreover, the dimension of each component in each figure may differ from an actual dimension.

<First Embodiment>
FIG. 1 is a perspective view showing an appearance of a lamp 100 according to the first embodiment. The lamp 100 is a straight tube type LED lamp having substantially the same shape as a conventional general straight tube fluorescent lamp using an electrode coil.

  In FIG. 1, a part of the housing 110 is cut away to show the inside of the lamp 100. In FIG. 1, the X, Y, and Z directions are orthogonal to each other. The X, Y, and Z directions shown in the following figures are also orthogonal to each other.

  As shown in FIG. 1, the lamp 100 includes a housing 110, two bases 201, a base pin 202, and a plurality of LED modules 300. A base pin 202 is provided on each base 201.

  First, the casing 110 according to the present embodiment will be briefly described.

  FIG. 2 is a perspective view of the housing 110 according to the first embodiment.

  FIG. 3 is a cross-sectional view of the lamp 100 according to the first embodiment. Specifically, FIG. 3 is a cross-sectional view of the lamp 100 along the YZ plane including the Y axis and the Z axis.

  As shown in FIGS. 1, 2, and 3, the housing 110 is a hollow housing (enclosure) for housing the LED module 300. The shape of the casing 110 is long. Openings are formed at both ends of the casing 110.

  The housing 110 includes a cover 200 and a base 400. Each of the cover 200 and the base 400 extends along the longitudinal direction of the casing 110. Hereinafter, the longitudinal direction of the casing 110 is also referred to as a casing longitudinal direction.

  The cover 200 is made of translucent plastic. Note that the cover 200 is not limited to plastic, and may be made of acrylic, polycarbonate, glass, or the like.

  The shape of the cover 200 is a shape in which the same shape (the shape shown in FIG. 3) continues from one end to the other end of the cover 200 in the longitudinal direction. That is, the shape of the cover 200 is long. Further, the shape of the base 400 is a shape in which the same shape (the shape shown in FIG. 3) continues from one end to the other end of the base 400 in the longitudinal direction. The cover 200 is configured to cover the LED module 300 as a light emitting module.

  As shown in FIG. 3, the cross-sectional shape of the cover 200 is a substantially arc shape. The thickness of the cover 200 is 0.7 [mm], for example. However, the cross-sectional shape of the cover 200 is not particularly limited, and may be, for example, a shape combining a straight line and a curved line such as a quadrangular shape.

  Moreover, it is preferable that the outer surface or inner surface of the cover 200 is subjected to a diffusion treatment. Thereby, the light emitted from the LED module 300 can be diffused. As the diffusion treatment, for example, a method of applying silica, calcium carbonate or the like to the inner surface of the cover 200, a method of using a resin material such as polycarbonate in which a diffusing material is dispersed in the material of the cover 200, or a groove or the like is formed on the inner surface of the cover 200 There is a method of forming irregularities by forming.

  FIG. 4 is a perspective view of the base 400 according to the first embodiment.

  As shown in FIGS. 3 and 4, the base 400 has a mounting plate 405. The mounting plate 405 extends along the longitudinal direction of the housing.

  On the surface of the mounting plate 405, a plurality of LED modules 300 are mounted linearly along the longitudinal direction of the housing. A plurality of LED modules 300 are fixed to the mounting plate 405 with an adhesive material having high thermal conductivity. That is, the base 400 is a long base that holds the LED module 300 as a light emitting module.

  In addition, the board | substrate 310 of each LED module 300 may be fixed to the mounting board 405 with a conductive screw member.

  Next, the LED module 300 will be described.

  FIG. 5 is a plan view of the LED module 300 according to the first embodiment. The LED module 300 is a COB type (Chip On Board) light emitting module. The LED module 300 is a line light source that emits light in a line shape (line shape).

  As shown in FIG. 5, the LED module 300 includes a substrate 310 and a light emitting unit 320.

  The substrate 310 is a long rectangular substrate extending in the longitudinal direction of the housing. The substrate 310 is a ceramic substrate, for example. The ceramic substrate is made of alumina or translucent aluminum nitride.

  Note that the substrate 310 is not limited to a ceramic substrate, and may be a resin substrate, a glass substrate, a flexible flexible substrate, an aluminum substrate, or the like.

  Here, the length in the longitudinal direction of the substrate 310 is L1, and the length in the short direction is L2. In this case, L1 and L2 are defined by a relational expression of 10 ≦ L1 / L2, for example. That is, L1 is 10 times or more of L2.

  As an example, various sizes of the substrate 310 according to the present embodiment have a long side (length in the longitudinal direction) of 140 [mm], a short side (length in the short direction) of 5.5 to 7 [mm], The thickness is 1 [mm].

  A light emitting unit 320 that emits light is provided on the main surface of the substrate 310. Hereinafter, in this specification, the main surface of the substrate 310 is a surface on which the light emitting unit 320 is provided.

  Specifically, on the main surface of the substrate 310, the light emitting unit 320 is formed up to both end edges in the longitudinal direction of the substrate 310. That is, the light emitting unit 320 is formed without interruption from the end surface of one short side of the substrate 310 to the end surface of the other short side.

  The light emitting unit 320 includes a plurality of LEDs 321 and a sealing member 322.

  The plurality of LEDs 321 are linearly mounted on the main surface of the substrate 310 along the longitudinal direction of the substrate 310. In the present embodiment, as an example, 24 LEDs 321 are mounted on each substrate 310.

  The LED 321 is a bare chip that emits monochromatic visible light. Each LED 321 is bonded to the substrate 310 by a die attach material (die bond material). The LED 321 is, for example, a blue LED chip that emits blue light. The blue LED chip is a gallium nitride based semiconductor light emitting element having a center wavelength of 440 nm to 470 nm, which is made of an InGaN based material.

  The plurality of LEDs 321 included in the light emitting unit 320 are electrically connected in series by a wiring 330 described later formed on the surface of the substrate 310. Hereinafter, the plurality of LEDs 321 included in the light emitting unit 320 are collectively referred to as a light emitting unit LED group.

  Note that all of the plurality of LEDs 321 constituting the LED group in the light emitting unit may not be connected in series. For example, the 24 LEDs 321 constituting the LED group in the light emitting unit may be constituted by three sets of LED groups electrically connected in parallel. In this case, the eight LEDs 321 constituting each of the three sets of LED groups are electrically connected in series.

  The sealing member 322 collectively seals all the LEDs 321 mounted on one substrate 310. On the main surface of the substrate 310, the sealing member 322 is formed up to both end edges in the longitudinal direction of the substrate 310. That is, the sealing member 322 is formed without interruption from the end surface of one short side of the substrate 310 to the end surface of the other short side.

  The linear sealing member 322 (light emitting unit 320) is formed on a straight line passing through the center of the substrate 310 in the short direction. The sealing member 322 (light emitting unit 320) may be formed closer to one long side than a straight line passing through the center of the substrate 310 in the short direction.

  The shape of the sealing member 322 is a substantially semicircular dome shape whose section is convex upward. The sealing member 322 is a phosphor-containing resin containing a phosphor that is a wavelength converter. The sealing member 322 is a wavelength conversion layer that converts the wavelength of light from the LED 321.

  The wavelength conversion layer includes an optical wavelength converter for converting the wavelength of light. In the present embodiment, the sealing member 322 that is a wavelength conversion layer includes a phosphor as an optical wavelength converter.

  Therefore, the sealing member 322 is a phosphor layer containing phosphor fine particles that excite the light of the LED 321. Incidentally, yellow phosphor fine particles are used as the phosphor fine particles, and the phosphor-containing resin is constituted by dispersing this in a silicone resin.

  As an example, the yellow phosphor particles are YAG (yttrium, aluminum, garnet) phosphor materials. The yellow phosphor particles are not limited to YAG phosphor materials, and may be silicate phosphor materials, for example.

  As described above, the light emitting unit 320 includes the plurality of LEDs 321 as blue LED chips and the sealing member 322 containing yellow phosphor particles. Therefore, the yellow phosphor particles are excited by the blue light of the blue LED chip to emit yellow light. As a result, white light is emitted from the light emitting unit 320 by the excited yellow light and the blue light of the blue LED chip.

  The LED module 300 further includes a wiring 330, an electrostatic protection element 340, two electrode terminals 350, and a wire 331.

  The wiring 330 is a metal wiring made of tungsten (W) or copper (Cu). The wiring 330 is patterned on the main surface of the substrate 310.

  Each of the two electrode terminals 350 is electrically connected to the wiring 330.

  The electrostatic protection element 340 is, for example, a Zener diode. The electrostatic protection element 340 prevents the LED 321 from being destroyed by the reverse polarity static electricity generated on the substrate 310. The electrostatic protection element 340 is electrically connected to the plurality of LEDs 321 through the wiring 330.

  The electrode terminal 350 is formed on the main surface of the substrate 310. The electrode terminal 350 is a power supply / reception unit (external connection terminal) for receiving DC power from an external power source and supplying DC power to the LED 321. The electrode terminal 350 is electrically connected to the wiring 330.

  For example, when a direct current is supplied from the electrode terminal 350 to the LED 321, the LED 321 emits light, and desired light is emitted from the LED 321.

  In the present embodiment, the two electrode terminals 350 are offset to one long side of the substrate 310 with the sealing member 322 as a reference.

  The wire 331 is an electric wire for electrically connecting the adjacent LED 321 and the wiring 330. The wire 331 is, for example, a gold wire. A p-side electrode and an n-side electrode for supplying current are formed on the upper surface of the LED 321. Each of the p-side electrode and the n-side electrode and the wiring 330 are wire-bonded by a wire 331.

  FIG. 6 is a plan view showing a plurality of LED modules 300.

  As described above, a plurality of LED modules 300 are mounted on the mounting plate 405 in a straight line along the longitudinal direction of the housing as shown in FIG. That is, the plurality of LED modules 300 are arranged in the housing 110. That is, the substrate 310 of the LED module 300 is a base on which the semiconductor light emitting element (LED 321) is mounted, which is disposed in the housing 110.

  Specifically, the plurality of LED modules 300 are mounted on the mounting plate 405 of the base 400. That is, the substrate 310 as a base is placed on the placement plate 405 of the base 400. That is, the substrate 310 as a base is placed (connected) on the base 400.

  In addition, as shown in FIG. 6, of the two adjacent LED modules 300, the electrode terminal 350 of one LED module 300 and the electrode terminal 350 of the other LED module 300 are electrically connected by the wiring 10. Is done.

  Thereby, the plurality of LEDs 321 in the plurality of LED modules 300 on the mounting plate 405 are connected in series. The wiring 10 is made of a conductive member such as a lead wire made of a conductive wire with an insulating coating, for example.

  Next, the base will be described.

  Two bases 201 are provided at both ends of the casing 110. The shape of the base 201 is a shape that closes the opening of the housing 110.

  A pair of base pins 202 are fixed (provided) to the base 201. The base pin 202 is made of a conductive metal.

  In addition, a lighting circuit (not shown) for receiving power and causing the LEDs of the LED module 300 to emit light is installed inside or outside the lamp 100 using one or both of the two caps 201. The lighting circuit can be configured by a rectifier circuit including a diode bridge using four Zener diodes, for example.

  In the lamp 100 according to the present embodiment, power is supplied to the LED module 300 using one of the two caps 201 as an example. In this case, a lighting circuit (not shown) is provided in the one base 201. Also, in this case, the other base 201 of the two bases 201 is used for mounting on a lighting fixture.

  Further, in this case, the one base 201 receives power (AC power) used for light emission of the semiconductor light emitting element (LED 321) from the external commercial AC power source via the base pin 202. That is, AC power is supplied to the one base 201 from the outside. That is, the base pin 202 of the one base 201 is a pin for receiving the AC power from an external commercial AC power source.

  Although the cap pin 202 of the present embodiment has been shown to function as a power supply terminal, the present invention is not limited to this embodiment. The base 201 may not function as a power feeding unit, but may function as a non-power feeding member to which power is not supplied. That is, the base 201 may simply function as an attachment portion for being attached to the instrument. When the base 201 functions as a non-power supply member, power supply to the LED module 300 can be easily realized by using a power supply terminal such as a connector. A power supply terminal such as a connector may be connected so that one end thereof is connected to the LED module 300 through a hole provided in the housing and the other end is electrically connected to a power supply disposed outside the housing.

  The lighting circuit is electrically connected to the plurality of LED modules 300 so that power can be supplied to the plurality of LED modules 300.

  In this case, the lighting circuit is electrically connected to the electrode terminal 350 of the LED module 300 placed at the location closest to the base 201 that accommodates the lighting circuit by wiring. Further, the lighting circuit is a wiring that is electrically connected to the electrode terminal 350 of the LED module 300 placed at a position farthest from the base 201 that accommodates the lighting circuit, and in the base 400 in the longitudinal direction of the casing. Wirings routed along are connected.

  The power supply to the LED module 300 is not limited to one base, and both the two bases 201 may be used.

  Next, the casing 110 according to the present embodiment will be described in more detail.

  As described above, the housing 110 includes the cover 200 and the base 400.

  The base 400 is made of aluminum, for example. Heat generated by the LED module 300 placed on the placement plate 405 is radiated to the outside air via the base 400.

  FIG. 7 is an enlarged view of a part of FIG. Specifically, FIG. 7 is an enlarged view of a region R10 in FIG.

  As shown in FIGS. 3, 4, and 7, the base 400 has two engaging portions 410 at positions symmetrical with respect to the central axis along the longitudinal direction of the housing 110. The engaging portion 410 is a portion where each of two end portions in the short direction of the base 400 is bent inward of the housing 110. The shape of the engaging portion 410 is, for example, a U-shape. Note that the shape of the engagement portion 410 is not limited to the U-shape, and may be another shape having a recess.

  The concave portion of the engaging portion 410 forms a groove portion 411. That is, the groove portion 411 is formed in the engaging portion 410. The groove part 411 is constituted by flat surfaces 411a, 411b, and 411c, and means a space constituted by the engaging part 410 and a bent part 210 described later.

  The cover 200 has a bent portion 210. The bent portion 210 is a portion where an end portion in the short direction of the cover 200 is bent inward of the cover 200. The inside of the cover 200 is, for example, the light irradiation side of the LED module 300. The inner side of the cover 200 is not limited to the light irradiation side, and may be, for example, the short side (horizontal direction) side of the cover 200.

  By forming the bent portion 210 in the cover 200, the strength of the cover 200 in the longitudinal direction can be improved. That is, the bending of the cover 200 in the longitudinal direction can be suppressed.

  As an example, the cross-sectional shape of the end portion of the bent portion 210 is a substantially arc shape. With this configuration, the bent portion 210 engages with the engaging portion 410 so as to make point contact at one or more locations of the groove portion 411 in the YZ plane. That is, an engaging portion 410 that engages with the bent portion 210 in one or more locations in the longitudinal direction of the cover 200 is formed at the end of the base 400 in the short direction so as to hold the cover 200. Is done.

  The casing 110 is obtained by integrating the cover 200 and the base 400 by engaging the bent portion 210 of the cover 200 and the engaging portion 410 of the base 400.

  FIG. 7 shows, as an example, a state in which the bent portion 210 is in point contact with each of the flat surfaces 411a, 411b, and 411c constituting the groove portion 411 in the YZ plane. In FIG. 7, the bent portion 210 appears to be in surface contact with the flat surface 411c, but actually, the bent portion 210 is in point contact with the flat surface 411c. That is, in the YZ plane, the bent portion 210 engages with the engaging portion 410 so as to make point contact with the engaging portion 410 (groove portion 411) at one or more locations.

  Note that the engagement state between the bent portion 210 and the engaging portion 410 in the YZ plane is not limited to point contact. For example, in the YZ plane, the bent portion 210 is engaged with the engaging portion 410 so as to make point contact with the flat surfaces 411a and 411b of the groove portion 411 (engaging portion 410) and to make surface contact with the flat surface 411c. It may be configured to match. That is, the engagement state between the bent portion 210 and the engaging portion 410 in the YZ plane may be configured to make point contact at at least one location.

  7 shows an engaged state between the bent portion 210 and the engaging portion 410 in the left portion of the casing 110 in FIG. Since the engagement state between the bent portion 210 and the engagement portion 410 in the right portion of the housing 110 in FIG. 3 is the same as the engagement state shown in FIG. 7, detailed description will not be given.

  Further, a guide part 220 is formed on the cover 200. Specifically, guide portions 220 are formed in the vicinity of each end portion of the cover 200 in the short direction. The guide part 220 extends along the longitudinal direction of the housing. The shape of the guide part 220 is long. The guide part 220 is configured to cover the engaging part 410 from the light irradiation side of the light emitting module (LED module 300) in the longitudinal direction of the cover 200. Specifically, the guide part 220 is formed so as to contact the outer surface of the bent part 210.

  Here, the luminous intensity distribution of the light emitted from the LED 321 in the light emitting unit 320 has a Lambertian light distribution that is proportional to the cosine (cos α) of the angle (α) formed with the optical axis of the LED 321.

  Therefore, the 1/2 beam angle of the light emitted from the LED 321 is approximately 120 degrees. The 1/2 beam angle is defined as an angle that is twice the angle formed by the direction and the optical axis, with the direction being a light intensity that is 1/2 the maximum light intensity of light emitted from the light emitting surface.

  Here, the optical axis is an axis that virtually connects the position of the strongest light and the position of the light source among the emitted light. For example, the axis indicating the light distribution of the LED 321 is the optical axis of the LED 321.

  The guide part 220 is configured not to reach the range of the 1/2 beam angle of the light emitted from the LED 321. That is, the guide part 220 is provided in the area | region outside the range of 1/2 beam angle of the emitted light from the LED module 300 (light emitting module). Further, the engaging portion 410 is provided in a region outside the range of the 1/2 beam angle of the light emitted from the LED module 300 (light emitting module). With this configuration, the total luminous flux emitted from the lamp 100 can be sufficiently secured.

  In addition, the height of the engaging portion 410 is adjusted without the emitted light from the LED module 300 affecting the edge portion of the engaging portion 410. For this reason, the emitted light from the LED module 300 is not directly applied to the engaging portion 410. Therefore, leakage of light to the outside can be suppressed, and the possibility that the engaging portion 410 can become a bright line when irradiated with emitted light can be suppressed to a low level.

  In addition, since the guide portion 220 is formed on the cover 200, the strength in the longitudinal direction of the cover 200 can be improved. That is, the bending of the cover 200 in the longitudinal direction can be suppressed.

  Next, a process for integrating the cover 200 and the base 400 according to the present embodiment will be described.

  FIG. 8 is a cross-sectional view of the cover 200 and the base 400 along the YZ plane when the cover 200 and the base 400 are not integrated.

  Here, the distance between one bent portion 210 of the cover 200 and the other bent portion 210 of the cover 200 is defined as w1. In addition, the distance between the bottom surface (plane 411b) of the groove portion 411 of one engaging portion 410 of the base 400 and the bottom surface (plane 411b) of the groove portion 411 of the other engaging portion 410 of the base 400 is w2.

  In this case, the cover 200 and the base 400 are formed so that w1 <w2 is satisfied. In addition, it is not limited above, The cover 200 and the base 400 may be formed so that w1 = w2 is satisfy | filled.

  FIG. 9 is a diagram for explaining a process when the cover 200 and the base 400 are integrated. The process for integrating the cover 200 and the base 400 is a process for assembling the casing 110.

  Referring to FIGS. 8 and 9, first, an external force is applied to cover 200 in the short direction (Y direction) of cover 200 such that w1 is equal to or greater than w2. That is, an external force is applied to the cover 200 from the inside to the outside of the cover 200.

  Here, as in the present embodiment, when a plastic cover 200 is used, the cover 200 is configured to be elastically deformed in the short direction of the cover. Thereby, as shown in FIG. 10, the cover 200 is elastically deformed so as to spread in the horizontal direction (Y direction). Hereinafter, the cover 200 that is elastically deformed so that w1 is equal to or greater than w2 is referred to as an elastically deformed cover 200. That is, in the elastically deformed cover 200, w1 is greater than or equal to w2.

  Then, as shown in FIG. 9, the cover 200 and the base 400 are integrated by sliding the bent portion 210 of the cover 200 in an elastically deformed state along the groove portion 411 of the base 400.

  In the following, one end surface and the other end surface in the longitudinal direction of the cover 200 are referred to as a first cover end surface and a second cover end surface, respectively. In the following, one end face and the other end face of the base 400 are referred to as a first base end face and a second base end face, respectively. In the state where the cover 200 and the base 400 are integrated, the first cover end surface and the second cover end surface are close to the first base end surface and the second base end surface, respectively.

  Specifically, the bent portion 210 on the first cover end surface of the cover 200 in the elastically deformed state is engaged with the groove portion 411 on the second base end surface side of the base 400. And the cover 200 is slid to the 1st base end surface side of the base 400, with the engagement state of the bending part 210 and the groove part 411 maintained.

  Hereinafter, a period during which the cover 200 is slid in order to assemble the casing 110 is referred to as a slide period.

  Then, the slide is stopped when the first cover end surface of the cover 200 and the first base end surface of the base 400 coincide with each other.

  The cover 200 and the base 400 are integrated by the above process. That is, the housing 110 can be assembled by the above steps.

  In the state where the bent portion 210 and the groove portion 411 are engaged, the distal end portion of the bent portion 210 of the cover 200 in the elastically deformed state is engaged with the engaging portion as shown in FIG. The flat surface 411b of 410 is pressed. That is, when the distal end portion of the bent portion 210 is pressed against the engaging portion 410 in the short direction of the cover 200, the bent portion 210 and the engaging portion 410 of the base 400 are engaged. Thereby, the cover 200 and the base 400 are firmly integrated.

  As described above, the engaging portion 410 engages with the bent portion 210 in line contact in the longitudinal direction of the cover 200. That is, the bent portion 210 engages with the engaging portion 410 in one or more places in the longitudinal direction of the cover 200 by line contact.

  That is, in the sliding period, the bent portion 210 engages with the groove portion 411 of the engaging portion 410 in line contact in the longitudinal direction of the cover 200. For example, the tip of the bent portion 210 presses the flat surface 411b of the engaging portion 410 by point contact in the YZ plane as shown in FIG.

  Therefore, the contact area between the bent portion 210 and the groove portion 411 of the engaging portion 410 is very small during the sliding period. Therefore, the frictional force generated by the contact between the bent portion 210 and the groove portion 411 can be extremely reduced during the sliding period. Therefore, the force required to slide the cover 200 can be reduced in spite of the fact that the tip of the bent portion 210 is pressed against the engaging portion 410 during the sliding period. As a result, the housing 110 can be easily assembled. That is, the cover 200 and the base 400 can be easily integrated (assembled).

  Further, since the guide portion 220 is formed, it is possible to suppress the bending of the cover 200 in the longitudinal direction, and it is possible to suppress the occurrence of distortion at the portion where the cover 200 and the base 400 are engaged. Thereby, the cover 200 and the base 400 can be easily integrated while suppressing the occurrence of distortion at the portion where the cover 200 and the base 400 are engaged.

  As shown in FIG. 7, the portion of the guide portion 220 that contacts the outer surface of the bent portion 210 functions to guide the sliding direction of the cover 200 in the longitudinal direction of the housing during the sliding period. With this configuration, the cover 200 in an elastically deformed state can be easily slid. That is, by providing the guide portion 220, the housing 110 can be assembled more easily. That is, the cover 200 and the base 400 can be more easily integrated (assembled).

  Note that, as described above, the configuration that functions to guide the sliding direction of the cover 200 in the longitudinal direction of the housing means, for example, that the contact area between the bent portion 210 and the engaging portion 410 is reduced, resulting in contact A configuration in which the end of the bent portion 210 is formed to have a curvature so that the resistance can be reduced.

  Below, the part which contacts the surface outside the bending part 210 among the guide parts 220 is also called a guide part contact part.

  Further, after the assembly of the housing 110 is completed, the engaging portion 410 is sandwiched between the bent portion 210 and the guide portion contact portion of the guide portion 220. Thereby, the cover 200 and the base 400 can be integrated more firmly. That is, the bonding strength between the cover 200 and the base 400 can be improved.

  In addition, although the cover 200 and the base 400 were formed so that w1 <w2 was satisfy | filled, it is not limited to this. For example, the cover 200 and the base 400 may be formed so that w1 = w2 is satisfied.

<Second Embodiment>
Next, a lighting device according to the second embodiment will be described.

  FIG. 11 is a perspective view showing a configuration of a lighting apparatus 600 according to the second embodiment.

  The lighting device 600 includes a lamp 60 and a lighting fixture 610.

  The lighting fixture 610 includes a pair of sockets 611, a fixture main body 612, and a circuit box (not shown).

  The pair of sockets 611 are electrically connected to the lamp 60. The pair of sockets 611 holds the lamp 60. A socket 611 is attached to the instrument main body 612.

  The inner surface 612a of the instrument main body 612 is a reflecting surface that reflects light emitted from the lamp 60 in a predetermined direction (for example, downward).

  The circuit box houses therein a lighting circuit that supplies power to the lamp 60 when the switch (not shown) is on and does not supply power when the switch is off.

  The lighting fixture 610 is attached to a ceiling or the like via a fixture.

  The lamp 60 is the lamp 100 according to the first embodiment described above or a lamp according to a later-described modification.

<Other variations>
Next, modifications of the lamp according to the embodiment of the present invention described above will be described below. Each of the following modifications can also be applied to the lighting device according to the second embodiment.

<Modification A>
In the above-described embodiment, the shape of the engaging portion 410 is a U-shape, but is not limited to this.

  For example, the shape of the engaging portion 410 may be the shape shown in FIG. Specifically, the shape of the groove 411 formed in the engaging portion 410 is similar to the shape of the bent portion 210. That is, the engaging portion 410 is formed with a groove portion 411 whose shape is similar to that of the bent portion 210.

  In the YZ plane, the area of the groove 411 is larger than the area of the bent part 210 inserted in the groove 411. Specifically, in the YZ plane, the area of the groove portion 411 is larger than the area of the bent portion 210 that is engaged with the engaging portion 410 (groove portion 411). In other words, the shape of the groove portion 411 and the shape of the bent portion 210 are substantially the same.

  In this configuration, the groove portion 411 of the engaging portion 410 is in line contact with the bent portion 210 at one or more locations in the longitudinal direction of the cover 200. That is, the engaging portion 410 engages with the bent portion 210 in one or more locations in the longitudinal direction of the cover 200 by line contact.

  With the configuration according to Modification A, the cover 200 and the base 400 are more firmly engaged (integrated). That is, with the configuration according to Modification A, the bonding strength between the cover 200 and the base 400 can be further improved as compared with the configuration according to the first embodiment.

<Modification B>
In the above embodiment, the guide portion 220 is formed on the cover 200, but the guide portion 220 may not be formed.

  The lamp according to the modified example B is different from the lamp 100 in FIG. 1 in that a lamp 110A is provided instead of the lamp 110. Since the other configuration of the lamp according to Modification B is the same as that of lamp 100, detailed description will not be repeated.

  FIG. 13 is a perspective view of a housing 110A according to Modification B. FIG.

  FIG. 14 is a cross-sectional view of a housing 110A according to Modification B.

  FIG. 15 is an enlarged view of a part of FIG. Specifically, it is an enlarged view of a region R11 in FIG.

  As shown in FIGS. 13 to 15, the housing 110 </ b> A is different from the housing 110 of FIG. 2 in that it includes a cover 200 </ b> A instead of the cover 200. Since the other configuration of casing 110A is the same as that of casing 110, detailed description will not be repeated.

  The cover 200A is different from the cover 200 of FIG. 3 in that the guide part 220 is not formed. Since the other configuration of cover 200A is the same as that of cover 200, detailed description will not be repeated.

  In the housing 110A, the engaging portion 410 is provided in a region outside the range of the 1/2 beam angle of the light emitted from the LED module 300 (light emitting module).

  In the modification example B, the shape of the groove 411 may be similar to the shape of the bent part 210 as in the modification example A, for example.

  In the configuration according to the modified example B, as shown in FIG. 16, the bent portion 210 of the cover 200 </ b> A in an elastically deformed state is slid along the groove portion 411 of the base 400 as shown in FIG. 16. Thus, the cover 200A and the base 400 can be integrated. Note that the description for integrating the cover 200A and the base 400 is the same as that in the first embodiment, and thus the detailed description will not be repeated.

  The housing 110A having the configuration according to the modified example B has the same effect as that of the first embodiment. That is, the bonding strength between the cover 200A and the base 400 can be improved. Moreover, the bending part 210 is formed in the cover 200A, so that the bending of the cover 200A in the longitudinal direction can be suppressed. As a result, it is possible to suppress the occurrence of distortion at the portion where the cover 200A and the base 400 are engaged. Thereby, the assembly of the housing 110A can be easily performed. That is, the cover 200A and the base 400 can be easily integrated (assembled) while suppressing the occurrence of distortion at the portion where the cover 200A and the base 400 are engaged.

<Modification C>
Moreover, the shape of the front-end | tip part of the bending part 210 is not limited to the shape shown by FIG. 7, for example. For example, the tip of the bent portion 210 may be a cylindrical portion 211 having a substantially circular cross section.

  FIG. 17 is an enlarged view of a part of FIG. Specifically, FIG. 17 is an enlarged view of a region R10 in FIG.

  The shape of the cylindrical portion 211 is a shape in which the same shape (the shape shown in FIG. 17) continues from one end to the other end of the bent portion 210 in the longitudinal direction.

  The shape of the cross section along the YZ plane of the cylindrical portion 211 is substantially circular. That is, the contour shape of the cross section of the distal end portion in the short direction of the bent portion 210 is an arc shape. In the YZ plane, the cylindrical portion 211 (tip portion) of the bent portion 210 makes point contact with each of the flat surfaces 411a, 411b, and 411c, so that the bent portion 210 engages with the engaging portion 410 (groove portion 411). .

  In this configuration, the groove portion 411 of the engaging portion 410 is in line contact with the bent portion 210 (columnar portion 211) in the longitudinal direction of the cover 200. That is, the engaging portion 410 is engaged with the bent portion 210 (the cylindrical portion 211) in line contact in the longitudinal direction of the cover 200.

  The housing having the configuration according to the modification C has the same effect as that of the first embodiment. In particular, the frictional force generated by the contact between the bent portion 210 and the groove portion 411 can be made extremely small during the sliding period. Therefore, the force required to slide the cover 200 can be reduced in spite of the fact that the tip of the bent portion 210 is pressed against the engaging portion 410 during the sliding period. As a result, the housing 110 can be easily assembled. That is, the cover 200 and the base 400 can be easily integrated (assembled).

  In the configuration of the modification example C, the shape of the groove portion 411 may be similar to the shape of the bent portion 210 as shown in FIG. 12 (modification example A).

<Modification D>
In the above embodiment, the LED module 300 is a COB type (Chip On Board) in which the LED itself (bare chip) is directly mounted on the substrate 310.

  However, the LED module 300 is a package type in which an LED chip is mounted in a cavity molded with resin or the like, and the inside of the cavity is sealed with a phosphor-containing resin, that is, a surface mount type (SMD). May be.

  Such an SMD type LED module 300A according to Modification D of the present invention will be described below.

  18 is a perspective view of an LED module 300A according to Modification D. FIG.

  As shown in FIG. 18, in the LED module 300 </ b> A, a plurality of packages 390 are linearly mounted in a line on the surface of the substrate 310.

  The package 390 is made of resin or the like, and the LED 321 is mounted in the cavity. The mounted LED 321 is covered with a sealing member 322. The plurality of packages 390 are electrically connected to each other by a wiring pattern, a wire, or the like.

<Modification E>
In the above embodiment, the shape of the cap pin 202 is a straight line, but is not limited thereto.

  As shown in FIG. 19, the shape of the tip of the base pin 202 may be L-shaped. With this configuration, it is possible to make it difficult for the lamp having the cap pin 202 according to Modification E to be detached from the lighting fixture.

<Modification F>
In the said embodiment, it was set as the structure which receives electric power only by one base among two bases. In this case, the base 201 that does not accommodate the lighting circuit may have the following configuration.

  FIG. 20 is a diagram illustrating a configuration of a base 201 according to Modification F.

  As shown in FIG. 20, the base 201 according to Modification F is different from the base 201 of FIG. 1 in that it includes a base pin 202 b instead of a pair of base pins 202.

  The base pin 202b is a ground pin for grounding. The shape of one end of the cap pin 202b is, for example, a T-shape so as to be attached to a lighting fixture. For example, the other end of the cap pin 202b is electrically connected to a ground terminal (not shown) in the housing 110 via a wiring.

  As mentioned above, although the lamp | ramp and illuminating device of this invention were demonstrated based on embodiment, this invention is not limited to these embodiment. The present invention includes various modifications made by those skilled in the art without departing from the scope of the present invention. Moreover, you may combine each component in several embodiment arbitrarily in the range which does not deviate from the meaning of invention.

  For example, in the above embodiment, the plurality of LEDs 321 on the substrate 310 of the LED module 300 are collectively sealed by the common sealing member 322. However, each of the plurality of LEDs 321 may be individually sealed by another sealing member 322.

  Further, in the above-described embodiment, the single-sided feed type lamp that is fed from one end of the casing 110 has been described, but a double-end feeding type that is fed from both ends of the casing 110 may be used.

  Moreover, although LED was illustrated as a semiconductor light-emitting device in the said embodiment, a semiconductor laser and organic EL (Electro Luminescence) may be sufficient.

  In the above embodiment, the substrate 310 having a rectangular cross-sectional shape is used. However, a polygonal substrate having a cross-sectional shape other than a square (rectangular) may be used. That is, the shape of the substrate 310 may be a triangular prism, a pentagonal prism, a hexagonal prism, or the like.

  Moreover, although the nozzle | cap | die 201 which concerns on the said embodiment was comprised from one integrated housing, it is not limited to this. The base according to the above embodiment may be composed of, for example, two housings having a semicircular cross section.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be widely used in lamps and lighting devices in which semiconductor light emitting elements such as LEDs are used.

10, 330 Wiring 60, 100 Lamp 110, 110A Housing 200, 200A Cover 201 Base 202, 202b Base pin 210 Bent part 211 Column part 300, 300A LED module 310 Substrate 320 Light emitting part 321 LED
350 Electrode terminal 400 Base 410 Engagement part 411 Groove part 600 Illumination device

Claims (9)

A long base for holding the light emitting module;
A long cover that covers the light emitting module;
The cover has a bent portion in which an end portion in a short direction of the cover is bent inward of the cover,
An engaging portion that is engaged with the bent portion in line contact in the longitudinal direction of the cover is formed at an end portion in a short direction of the base so as to hold the cover. The lamp according to claim 1, wherein the cover is configured to be elastically deformed in a short direction of the cover. The lamp according to claim 2, wherein the bent portion and the engaging portion of the base are engaged with each other when a distal end portion of the bent portion is pressed against the engaging portion in a short direction of the cover. The lamp according to any one of claims 1 to 3, wherein the engaging portion is provided in a region outside a range of a 1/2 beam angle of light emitted from the light emitting module. In the engaging portion, a groove portion whose shape is similar to the shape of the bent portion is formed,
The lamp according to any one of claims 1 to 4, wherein the groove portion of the engaging portion is in line contact with the bent portion in a longitudinal direction of the cover. The lamp according to any one of claims 1 to 5, wherein a contour shape of a cross section of a distal end portion in a short direction of the bent portion is an arc shape. The long cover part comprised so that the said engaging part might be covered from the light irradiation side of the said light emitting module in the longitudinal direction of this cover is further formed in the said cover. The lamp according to claim 1. The lamp according to any one of claims 1 to 7, wherein the guide portion is provided in a region outside a range of a 1/2 beam angle of light emitted from the light emitting module. An illuminating device comprising the lamp according to claim 1.

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