JP2014135202A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology which can easily design and develop a product variation in which specification sizes differ from one another, and can reduce a manufacturing cost of a lighting device compared with a conventional technology, in the lighting device using an LED as a light source.SOLUTION: A lighting device comprises an LED light emitting module having an LED, a lens module having a first lens of a prescribed first light distribution angle, and a first box having at least partially a heat sink for radiating heat generated by the LED, and accommodating the LED light emitting module and the lens module. The first box conforms to a first standard size of the lighting device, and the lens module has a connecting part for detachably connecting the heat sink of the first box and a heat sink of a second box which conforms to a second standard size of the lighting device different from the first standard size while holding the LED light emitting module.

Description

  The present invention relates to a lighting device using LEDs.

  Various lighting devices using semiconductor light emitting elements such as LEDs (Light-emitting Diodes) having high efficiency and long life have been developed in place of general lamps such as halogen light bulbs. When the LED is heated to a high temperature due to heat generated from the LED, there is a problem that the light emission efficiency is lowered, the light output of the lighting device is lowered, and the life of the LED is shortened. Therefore, what is equipped with the heat sink which thermally radiates the heat | fever which LED emits efficiently in the illuminating device using this kind of LED is known (refer patent documents 1-4).

JP-T-2006-502551 JP-T-2004-528698 JP 2011-60754 A JP 2012-169274 A

  By the way, conventionally, a standard (for example, C7527-JIS-6320-2) that defines the maximum outer diameter dimension, the overall length dimension, and the like of a general lamp such as a halogen bulb has been established. Therefore, when replacing a halogen bulb with an LED, it is necessary to adapt the maximum outer diameter dimension, the overall length dimension, and the like of the lighting device to existing standards. In addition, this type of lighting device is often deployed as a product lineup of products with different standard sizes as product variations. In such a case, conventionally, the design and development of main components such as LEDs and lenses of the lighting device have been conventionally performed. The actual situation is that it is performed each time according to the standard size. As a result, there is a problem that the time and cost required for designing and developing product variations related to the lighting device are likely to be enormous.

  The present invention has been made in view of the above problems, and the object thereof is to make it possible to easily design and develop product variations having different standard sizes in an illumination device using LEDs as a light source. An object of the present invention is to provide a technique capable of reducing the manufacturing cost as compared with the conventional one.

  In order to solve the above problems, the lighting device according to the present invention employs the following means. That is, the lighting device according to the present invention has at least a part of an LED light emitting module having an LED, a lens module having a first lens having a predetermined first light distribution angle, and a heat sink that dissipates heat generated by the LED. And a first housing that houses the LED light emitting module and the lens module, wherein the first housing is configured to conform to a first standard size of a lighting device, and the lens module The heat sink of the first housing and the heat sink of the second housing configured to fit the second standard size of the lighting device different from the first standard size are detachable while holding the LED light emitting module. It is characterized by comprising a connecting part for connecting to.

According to the above configuration, when manufacturing a product lineup with different standard sizes, the casing is configured to conform to the standard size, while the LED light emitting module and the lens module are made common regardless of the standard size. Is possible. In other words, regardless of the standard size of the lighting device, the LED light emitting module 2 and the lens module, which are the main components of the lighting device 1, are arranged in a housing (first housing and second housing) adapted to each standard size. Body). And since the ratio which LED light emitting module and a lens module occupy is high in the manufacturing cost of an illuminating device, it is also possible to reduce the manufacturing cost of the whole illuminating device by mass-producing these main parts as a common specification. Become. Moreover, according to the illuminating device which concerns on this invention, it is not necessary to design the whole instrument individually for every standard size, and it can suppress that the time required for design, a development cost, etc. increase. In addition, since the LED light emitting module and the lens module, which are the main components of the lighting device, can be diverted as a common specification regardless of the standard size, the product lineup can be enhanced.

  Further, according to the lighting device according to the present invention, the LED light emitting module and the lens module can be diverted as a common specification regardless of the standard size as described above. Different types of housings such as size and design can be exchanged according to the conditions. That is, according to the illuminating device according to the present invention, it is possible to secure a degree of freedom when the user customizes and to widely meet the user's needs.

  Furthermore, according to the illumination device of the present invention, since the lens module holds the LED light emitting module, it is possible to effectively prevent the optical axis of the LED in the LED light emitting module from deviating from the optical axis of the lens module. it can.

  Here, the LED light emitting module may have a module substrate on which a plurality of the LEDs are mounted substantially at the center, and may be arranged so that the optical axis of the LED and the optical axis of the lens module are substantially coincident with each other. . In this way, the LED is configured as a so-called one-core type, and the optical axis of the LED and the optical axis of the lens module are substantially matched, so that the light distribution angle can be in line with the design. The light irradiation surface can be cleaned. Furthermore, by making the LED a one-core type, the size of the module substrate can be designed smaller than in the case where a plurality of LEDs are dispersedly arranged on the module substrate. Thereby, an illuminating device can be constructed | assembled as an LED lamp corresponding to a smaller standard size, Therefore, the product lineup which concerns on an illuminating device can be enriched further.

  The connecting portion is a protruding portion protruding from the bottom of the lens module, and the protruding portion is provided in a hole provided in the heat sink of the first casing or in a heat sink of the second casing. You may be comprised so that it may be latched by the hole. As described above, by adopting a connection structure in which the lens module is detachably connected to both the first housing and the second housing by using a common connection structure, the illumination can be performed regardless of the standard size. The LED light emitting module and the lens module, which are main components of the apparatus, can be diverted to the first casing and the second casing more easily.

  Moreover, the connection nail | claw provided toward the center direction of the said housing | casing may be formed in the front-end | tip of the said protrusion part. According to this, the LED light emitting module can be held more firmly by applying the force of the protruding portion (connecting claw) toward the central direction of the housing, that is, in the optical axis direction of the LED. Thereby, it can prevent effectively that the optical axis of LED in an LED light emitting module and the optical axis of a lens module shift.

The lens module may further include a lens holder that detachably holds the first lens and a second lens having a second light distribution angle different from that of the first lens. Thus, since the first lens and the second lens can be selected according to the light distribution angle, it is not necessary to individually design the illumination device for each light distribution angle, and the product lineup can be enhanced. . In addition, by holding the different types of lenses detachably with respect to the lens holder, the lens module can be customized according to the user's preference, the location where the lighting device is used, and other conditions.

  The LED chip included in the LED may have a GaN substrate. According to this, even if it raises the current density of an LED chip, there exists an effect that a malfunction does not arise easily. As a result, a larger driving power can be supplied to the LED, and the illuminating device can emit light with a larger luminous flux and illuminance. Therefore, by increasing the driving power, luminous flux, and illuminance required for the LED as the standard size of the lighting device increases, by increasing the current density of the LED chip without increasing the number of LED chips, It can be handled easily and sufficiently.

  The means for solving the problems in the present invention can be used in combination as much as possible.

  According to the present invention, it is possible to easily design and develop product variations having different standard sizes in a lighting device using an LED as a light source, and to reduce the manufacturing cost of the lighting device as compared with the related art. Technology can be provided.

It is a disassembled perspective view of the MR16 type LED lamp which concerns on embodiment. It is a side view of MR16 type LED lamp which concerns on embodiment. It is a perspective sectional view of MR16 type LED lamp concerning an embodiment. It is a perspective view of the 1st heat sink concerning an embodiment. It is a perspective view of the 1st heat sink concerning an embodiment. It is a perspective view of the MR11 type LED lamp which concerns on embodiment. It is a disassembled perspective view of the MR11 type LED lamp which concerns on embodiment. It is a disassembled perspective view of the 2nd housing | casing which concerns on embodiment. It is a figure which shows the modification of the MR11 type LED lamp which concerns on embodiment.

  DETAILED DESCRIPTION Exemplary embodiments for carrying out the present invention will be described in detail below with reference to the drawings. It should be noted that the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are intended to limit the technical scope of the invention only to those unless otherwise specified. is not.

<Embodiment>
The illumination device according to the embodiment is an LED lamp provided with a light emitting diode (hereinafter referred to as “LED”) as a light source, and the casing thereof is a standard established by a standard such as JIS (Japanese Industrial Standard). It is configured to fit the size. Here, with reference to FIG. 1 to FIG. 5, an example in which the illumination device 1 according to the present embodiment is configured as an MR16 type LED lamp 1 </ b> A that can be replaced with an MR16 type halogen bulb having an outer diameter of about 50 mm will be described. To do. And the example which comprises the illuminating device 1 which concerns on this embodiment as MR11 type | mold LED lamp 1B replaceable with the MR11 type | mold halogen light bulb which has an outer diameter of about 35 mm is demonstrated with reference to FIGS. In the present embodiment, MR16 type and MR11 type have different standard sizes, and correspond to combinations of the first standard size and the second standard size in the present invention.

FIG. 1 is an exploded perspective view of an MR16 type LED lamp 1A according to the present embodiment. FIG. 2 is a side view of the MR16 type LED lamp 1A according to the present embodiment. FIG. 3 is a perspective sectional view of the MR16 type LED lamp 1A according to the present embodiment. The MR16 type LED lamp 1A includes an LED light emitting module 2, a lens module 3, a first housing 4A, and the like. In this specification, the side on which the lens module 3 is provided is defined as “front” of the illumination device 1 (MR16 type LED lamp 1A). The LED light emitting module 2 includes a LED 20 as a light source and a module substrate 21 on which the LED 20 is mounted. The LED light emitting module 2 is a one-core type module in which the LEDs 20 are centrally arranged at the center of the module substrate 21. The module substrate 21 is, for example, a metal base substrate formed of a metal material such as aluminum with good heat dissipation or an insulating material.

  The LED 20 has, for example, a chip-on-board structure in which one or a plurality of near-ultraviolet LED chips are directly mounted on a wiring provided on the mounting surface of the module substrate 21, and is blue fluorescent light that is excited by the near-ultraviolet LED chip to emit light. Body, green phosphor, and red phosphor are mixed with a translucent resin to be potted or the like. As the LED chip, not only a near ultraviolet LED chip but also various LED chips such as a blue LED chip can be used, and various phosphors can be selected according to the LED chip to be used. Further, the LED chip in this embodiment has a GaN (gallium nitride, gallium nitride) substrate. Thus, when an LED chip using a GaN substrate is applied, a large current can be input, and a point light source with a large luminous flux can be realized.

  The LED 20 can adopt a package structure instead of using a chip-on-board structure, and can be applied to various forms. Moreover, the LED light emitting module 2 can also disperse | distribute and arrange | position several LED20 on the module board | substrate 21. FIG. Further, a substrate other than the GaN substrate, such as a sapphire substrate or a silicon substrate, may be applied to the LED chip.

  The lens module 3 includes a first lens 30 and a lens holder 31 to which the first lens 30 can be attached. The first lens 30 is a lens having a predetermined first light distribution angle. The first lens 30 is made of, for example, acrylic resin, polycarbonate resin, or the like, and has, for example, a substantially truncated cone shape as a whole. The first lens 30 has an emission surface 301 that emits light emitted from the LED 20. If the side where the emission surface 301 is formed in the first lens 30 is defined as a “front part”, a concave part 302 for accommodating the LED 20 is formed in the rear part of the first lens 30.

  The exit surface 301 of the first lens 30 is, for example, a collimator lens. In addition, a convex lens is provided at the bottom of the concave portion 302 in the first lens 30 so as to be convex toward the rear portion, for example. The exit surface 301 is not limited to a collimator lens, and various lenses such as a Fresnel lens can be preferably used. As shown in FIG. 3, the first lens 30 is provided at a position facing the LED 20 mounted on the module substrate 21, and the LED 20 is accommodated in the concave portion 302, so that the first lens 30 and the LED 20 Suppresses interference. In addition, the shape, size, material, and the like of the first lens 30 can be changed as appropriate.

The lens holder 31 has a holder main body 311 having a substantially cylindrical shape capable of holding the first lens 30 therein. The inner diameter of the holder body 311 is equal to the outer diameter of the first lens 30, and the lens holder 31 can hold the first lens 30 by fitting the first lens 30 into the holding portion 311. The lens holder 31 has translucency and is made of, for example, a transparent resin. The lens holder 31 further includes a pair of protruding arm portions 32 that protrude downward from the holder main body 311. Further, a hook-shaped connecting claw 33 is formed at the tip of the protruding arm portion 32. Details of the lens module 3 will be described later. In the present embodiment, the protruding arm portion 32 corresponds to the protruding portion and the connecting portion in the present invention.

  The first housing 4A is a housing (housing) of the MR16 type LED lamp 1A and houses the LED light emitting module 2, the lens module 3, and the like. Further, the first housing 4A has at least a part of a heat sink that dissipates heat generated by the LEDs 20. Specifically, the first housing 4A includes a first heat sink 41A that dissipates heat generated by the LEDs 20, and a power circuit board 6 that supplies driving power to the LEDs 20 in the LED light emitting module 2 from the power source (see FIG. 2). A first driver housing 42 </ b> A for housing the reference).

  As the material of the first driver housing 42A, various resins, inorganic materials such as ceramics, and metals such as aluminum can be applied. Even if these materials are used in combination, the first driver housing 42A is configured. Good. In the present embodiment, PBT (polybutylene terephthalate) is used for the first driver housing 42A, but is not limited thereto. Moreover, as a material of the first driver housing 42A, a resin-based material having no conductivity is preferable. 42 A of 1st driver housings are provided with the board | substrate accommodating part 421 which accommodates the circuit board 6, and the conducting wire holding | suppressing mounting part 422 provided in a row behind this board | substrate accommodating part 421. The substrate housing portion 421 has a set of fixing portions 423 to which a fastener such as a screw can be screwed.

  As shown in FIGS. 1 and 3, the conductor pressing member 7 is mounted on the conductor pressing mounting portion 422 of the first driver housing 42 </ b> A. The conducting wire pressing member 7 is formed of an insulating member. In addition, a set of pin insertion holes 71 are formed in the conductive wire pressing member 7 in the thickness direction. A base pin 61 of a base provided on the circuit board 6 is inserted into the pin insertion hole 71. Further, the conductor holding member 7 has a locking claw 72 that is locked to a locking portion 424 provided on the side of the first driver housing 42A on the side of the conductor pressing mounting portion 422 (see FIGS. 1, 3 and the like). ). When the MR16 type LED lamp 1A is assembled, the circuit board 6 is accommodated in the board accommodating portion 421 of the first driver housing 42A, and the cap pin 61 is inserted into the pin insertion hole 71 of the conductor holding member 7. Then, the conductor pressing member 7 can be mounted on the first driver housing 42 </ b> A by hooking the locking claw 72 of the conductor pressing member 7 on the locking portion 424 of the conductor pressing mounting portion 422. The cap pin 61 protruding to the outside through the pin insertion hole 71 of the conductor pressing member 7 can be inserted into a socket (not shown) and connected. Thereby, electric power can be supplied to the circuit board 6 from an external power supply.

  4 and 5 are perspective views of the first heat sink 41A according to the present embodiment. The first heat sink 41A is a housing member that constitutes the first housing 4A together with the first driver housing 42A. The first heat sink 41A is also a heat radiating member for radiating the heat generated by the LEDs 20 as described above. The first heat sink 41A is formed of a member having good heat dissipation, such as aluminum.

  The first heat sink 41 </ b> A includes an installation part 411 for installing the LED light emitting module 2 and the lens module 3, an outer cylinder part 412 positioned behind the installation part 411, and a plurality of heat radiation fins provided around the outer cylinder part 412. 413 and the like. The installation portion 411 of the first heat sink 41A has a substantially circular planar shape. Further, the board accommodating portion 421 in the first driver housing 42 </ b> A can be inserted into the outer cylinder portion 412. In addition, the installation portion 411 of the first heat sink 41A has a set of screw insertion holes 414 and a set of arm insertion holes 415 into which the set of protruding arm portions 32 in the holder body 311 of the lens holder 3 can be inserted. Is formed. Further, the installation portion 411 of the first heat sink 41A is formed with a wiring opening 416 through which wiring connected to the respective terminals of the circuit board 6 and the module board 21 accommodated in the first driver housing 42A is passed. ing.

  In the first heat sink 41 </ b> A, a plurality of radiating fins 413 are arranged radially on the outer peripheral edge of the installation portion 411. Each radiating fin 413 has a plate shape, and by increasing the surface area of the first heat sink 41A, it is possible to promote the radiating of the heat transmitted from the LED 20 to the installation portion 411. Each radiating fin 413 is connected to the outer surface of the outer cylinder part 412 and extends radially outward from the side of the outer cylinder part 412 (in other words, outward from the side of the installation part 411). (See FIGS. 4 and 5). In addition, the radiating fins 413 are radially arranged at regular intervals with respect to the center of the installation portion 411 in the first heat sink 41A. Further, the radiation fins 413 extend forward with reference to the installation part 411 in the first heat sink 41 </ b> A, and the tips of the radiation fins 413 are connected to each other by an annular rim part 417.

  As shown in FIG. 3, the LED light emitting module 2 and the lens module 3 are installed in the installation part 411 of the first heat sink 41A. Specifically, the LED light emitting module 2 is fixed to the first housing 4 </ b> A by a fixing screw 5. The module substrate 21 of the LED light emitting module 2 includes a set of screw insertion portions 211 that are notches through which the fixing screws 5 are inserted, and notches through which the protruding arm portions 32 of the holder body 311 of the lens holder 31 are inserted. A set of arm insertion portions 212 is formed. Further, the module board 21 is formed with a wiring notch 213 which is a notch for passing wiring connected to the respective terminals of the circuit board 6 and the module board 21 housed in the first driver housing 42A. (See FIG. 1).

  At the time of assembling the MR16 type LED lamp 1A, the fixing screws 5 are sequentially inserted into the screw insertion part 211 formed on the module substrate 21 and the screw insertion hole 414 formed on the installation part 411 of the first heat sink 41A. After that, the first driver housing 42A is screwed into a screw groove formed in the fixing portion 423 provided in the board housing portion 421. Accordingly, the LED light emitting module 2 is fixed to the installation portion 411 of the first heat sink 41A via the fixing screw 5, and the first heat sink 41A and the first driver housing 42A are connected. Note that wiring from the circuit board 6 accommodated in the first driver housing 42A includes wiring openings 416 formed in the installation part 411 of the first heat sink 41A and wiring notches 213 formed in the module substrate 21. It can guide to the mounting surface of LED20 in the module board | substrate 21, and can connect to the terminal provided in the said mounting surface. Thereby, the drive power from the circuit board 6 can be supplied to the LED 20 mounted on the module board 21.

  On the other hand, the lens module 3 is fixed to the first heat sink 41 </ b> A by a connecting claw 33 formed at the tip of the protruding arm portion 32 in the lens holder 31. Specifically, the protruding arm portion 32 in the lens holder 31 is inserted into the arm insertion portion 212 formed in the module substrate 21 and the arm insertion hole 415 formed in the installation portion 411 of the first heat sink 41A, so that the protruding arm portion. The connection claw 33 formed at the tip of 32 is hooked on the back surface of the installation portion 411. Accordingly, the lens module 3 is mounted on the first heat sink 41A (first housing 4A) while holding the LED light emitting module 2. Further, the connecting claw 33 of the protruding arm portion 32 is provided toward the center direction (that is, the inner side) of the installation portion 411 of the first heat sink 41A. That is, the coupling claw 33 of the lens holder 31 is locked to the arm insertion hole 415 formed in the installation portion 411 of the first heat sink 41A so as to face the center direction (that is, the inside) of the first housing 4A. The

In the MR16 type LED lamp 1A configured as described above, among the light emitted from the LED 20, the light emitted from the emission surface 301 of the first lens 30 is a front opening formed in front of the MR16 type LED lamp 1A. Released from part 418 (see FIG. 3). In addition, the MR16 type LED lamp 1A is configured such that each of the heat dissipating fins 413 radially surrounds the side of the LED light emitting module 2.
Therefore, a side opening 419 that emits light emitted by the LED 20 from the side surface of the first housing 4A to the outside is formed between adjacent heat radiation fins 413 (see FIG. 3). .

  In addition to the front opening 418, the MR16 type LED lamp 1A can emit light emitted from the LED 20 from the side surface of the first housing 4A to the outside through the side opening 419. For this reason, MR16 type LED lamp 1A can expand the irradiation range of the light to irradiate. Further, since the side opening 419 is formed over the entire area in the circumferential direction of the first casing 4A, the LED 20 is emitted not only in a specific direction on the side of the first casing 4A but also in the entire circumferential direction. Light can be emitted. Moreover, since the radiation fins 413 in the first heat sink 41A are radially arranged around the installation portion 411 at regular intervals (equal intervals), the uniform radiation is emitted to the side of the MR16 type LED lamp 1A. Can do.

  In the MR16 type LED lamp 1A, since a light transmissive material is used for the lens holder 31, the light leaking from the side surface of the first lens 30 is transmitted and guided well to the side opening 419. be able to. And according to MR16 type | mold LED lamp 1A which concerns on this embodiment, the feeling of use close | similar to the conventional halogen illumination can be obtained by radiating | emitting light from the side opening part 419 formed in 4 A of 1st housing | casing. it can. Further, it is possible to easily confirm the light-off and lighting states from the side of the MR16 type LED lamp 1A. In addition, according to the MR16 type LED lamp 1A, the area of the side opening 419 can be secured, and the area of the radiation fin 413 in the first heat sink 41A can be secured, so that the light irradiation can be performed while securing the cooling ability of the LED 20. The range can be expanded.

  As described above, the lighting device 1 according to the present embodiment is an LED lamp in which a halogen bulb is replaced with an LED, and, like the halogen bulb, needs to be manufactured so as to conform to a standard size based on a standard. The MR16 type LED lamp 1A shown in FIGS. 1 to 5 is an MR16 type LED lamp that can replace the MR16 type halogen light bulb, and the first housing 4A is designed and manufactured so as to conform to the standard size of the MR16 type. Has been.

  By the way, as a product variation of the lighting device, there is a case where products of different so-called standard sizes are developed as a lineup. In such a case, conventionally, the main parts constituting the lighting device, specifically, LED light emission including the LED. It was necessary to design and develop major components such as modules and lenses each time according to the standard size. For this reason, conventionally, there has been a problem that the time and cost required for designing and developing product variations related to the lighting device are likely to be enormous. Therefore, in order to solve the above problems, the lighting device 1 according to the present embodiment adopts a configuration in which the LED light emitting module and the lens module are made into a common unit by making a common structure among a plurality of different standard sizes. . In addition, the common unit consisting of the LED light emitting module and the lens module can be attached to and detached from any of the casings configured for each standard size so as to conform to the standard size, so that the common unit can be used regardless of the standard size. The unit can be diverted.

More specifically, the lens module 3 in the first lighting device 1A holds the LED light emitting module 2, and the first heat sink 41A of the first housing 4A and the first lighting device different from the first standard size. 2 The LED light-emitting module 2 and the lens module 3 can be shared regardless of the standard size by providing a connecting part that can be detachably connected to the heat sink of the second housing that is configured to conform to the standard size. ing. That is, the lens module 3 according to the MR16 type LED lamp 1A described above has the protruding arm portion 32 that protrudes downward from the bottom portion of the lens holder 31. The lens module 3 is installed by engaging the connecting claw 33 formed at the tip of the protruding arm 32 with the protruding portion insertion hole 415 formed in the first heat sink 41A of the first housing 4A. The LED light emitting module 2 is held between the first heat sink 41 </ b> A and the portion 411. On the other hand, the engagement state can be released by removing the hook of the connecting claw 33 in the lens module 3 (lens holder 31) with respect to the first heat sink 41A. Thereby, MR16 type LED lamp 1A can remove the lens module 3 from the 1st heat sink 41A. Furthermore, the LED light emitting module 2 can be removed from the first heat sink 41A by removing the fixing screw 5 screwed into the fixing portion 423. That is, the MR16 type LED lamp 1A can detachably attach the lens module 3 and the LED light emitting module 2 to the first heat sink 41A while holding the LED light emitting module 2 in the lens module 3.

  Next, with reference to FIGS. 6-8, the example which comprises the illuminating device 1 which concerns on this embodiment as MR11 type LED lamp 1B from which the standard size of a housing | casing differs from MR16 type LED lamp 1A is demonstrated. The MR11 type LED lamp 1B is one of the variations of the illumination device 1 according to the present embodiment, like the MR16 type LED lamp 1A. FIG. 6 is a perspective view of the MR11 type LED lamp 1B according to the embodiment. FIG. 7 is an exploded perspective view of the MR11 type LED lamp 1B. As described above, the MR11 type LED lamp 1B is an LED lamp that can replace the MR11 type halogen bulb having an outer diameter of about 35 mm. The MR11 type LED lamp 1B includes the LED light emitting module 2 and the lens module 3 that are common to the MR16 type LED lamp 1A described above. In the MR11 type LED lamp 1B, the side on which the lens module 3 is provided is defined as “front”.

  The MR11 type LED lamp 1B includes a second housing 4B in which the LED light emitting module 2 and the lens module 3 can be mounted. The second housing 4B is configured to be compatible with an MR11 type (second standard size) having a standard size different from that of the MR16 type (first standard size). In the illustrated example, the second housing 4B includes a second heat sink 41B and a second driver housing 42B. The second driver housing 42 </ b> B is a housing for housing a power circuit board 6 (not shown in FIGS. 6 to 8, see FIG. 2) that supplies driving power to the LEDs 20 in the LED light emitting module 2 from the power source. This corresponds to the first driver housing 42A of the MR16 type LED lamp 1A.

  As shown in FIG. 8, the second driver housing 42 </ b> B accommodates the circuit board 6 and has a board housing part 421 provided with a set of fixing parts 423, and a conductive wire continuously provided behind the board housing part 421. And a presser mounting portion 422. The substrate housing part 421, the conductor holding part 422, and the fixing part 423 are as described above. Further, the conductor pressing member 7 (see FIG. 2) described above is mounted on the conductor pressing mounting portion 422.

  Similar to the first heat sink 41A, the second heat sink 41B is a heat radiating member formed of a material having good heat dissipation, such as aluminum, and has a substantially circular shape for installing the LED light emitting module 2 and the lens module 3. The installation portion 411 is provided. In addition, a plurality of radiating fins 413 are arranged on the outer peripheral portion of the installation portion 411 similarly to the first heat sink 41A. Also in the installation part 411 of the second heat sink 41B, a set of screw insertion holes 414, a set of arm insertion holes 415, a wiring opening, and the like are formed as in the installation part 411 of the first heat sink 41A shown in FIG. Has been. 7 and 8, the illustration of the wiring opening is omitted. 7 and 8, only one screw insertion hole 414 and one arm insertion hole 415 are shown in the set of screw insertion holes 414 and one set of arm insertion holes 415, respectively.

Here, the LED light emitting module 2 is detachably attached to the lens module 3 common to the MR16 type LED lamp 1A in the second housing 4B (specifically, the second heat sink 41B) of the MR11 type LED lamp 1B. . Specifically, the LED light emitting module 2 is fixed to the second housing 4B via fixing screws 5. Further, the protruding arm portion 32 in the lens holder 31 is inserted into the arm insertion portion 212 formed in the module substrate 21 and the arm insertion hole 415 formed in the installation portion 411 of the second heat sink 41B, and the tip of the protruding arm portion 32 is inserted. The lens module 3 is fixed to the second heat sink 41B by engaging the connecting claw 33 formed on the arm insertion hole 415. Thereby, the lens module 3 is attached to the second heat sink 41B (second housing 4B) while holding the LED light emitting module 2. On the other hand, the lens module 3 can be easily detached from the second heat sink 41B by releasing the locking state of the connecting claw 33 of the lens module 3 (lens holder 31) with respect to the second heat sink 41B. Moreover, the LED light emitting module 2 can be easily removed from the second heat sink 41B by removing the fixing screw 5 screwed into the fixing portion 423. That is, the MR11 type LED lamp 1B can detachably mount the lens module 3 and the LED light emitting module 2 to the second heat sink 41B while holding the LED light emitting module 2 on the lens module 3.

  As described above, when the lighting device 1 according to the present embodiment manufactures a product lineup having different standard sizes, such as a combination of the MR16 type LED lamp 1A and the MR11 type LED lamp 1B, the housing is set to the standard size. On the other hand, the LED light emitting module 2 and the lens module 3 can be shared regardless of the standard size. In other words, regardless of the standard size such as MR16 type or MR11 type, the LED light emitting module 2 and the lens module 3 which are the main components of the lighting device 1 are arranged in a housing (first housing) adapted to each standard size. Body 4A and second housing 4B). And since the ratio which the LED light emitting module 2 and the lens module 3 occupy is high in the manufacturing cost of the illuminating device 1, mass production is carried out by using this LED light emitting module 2 and the lens module 3 as a common specification. It is also possible to reduce the manufacturing cost. Moreover, according to the illuminating device 1 which concerns on this embodiment, it is not necessary to design the whole instrument individually for every standard size, and it can suppress that the time required for design, development cost, etc. increase. Moreover, since the LED light emitting module 2 and the lens module 3 which are main components of the illuminating device 1 can be diverted as a common specification regardless of the standard size, the product lineup can be enhanced.

  Moreover, according to the illuminating device 1 which concerns on this embodiment, since the LED light emission module 2 and the lens module 3 can be diverted as a common specification irrespective of a standard size as mentioned above, a user preference and use of an illuminating device are possible. Different types of housings such as size and design can be exchanged according to the location and other conditions. That is, according to the illuminating device 1 which concerns on this embodiment, the freedom degree at the time of a user customizing can be ensured and it can respond to a user's needs widely. In the example of the present embodiment, for example, by replacing the first housing 4A and the second housing 4B with each other, a lighting device that conforms to different standard sizes, such as the MR16 type and the MR11 type, can be easily constructed. be able to.

Further, in the illumination device 1 (MR16 type LED lamp 1A, MR11 type LED lamp 1B) according to the present embodiment, the LED light emitting module 2 includes a module substrate 21 on which a plurality of LEDs 20 are mounted substantially at the center, and the light of the LED 20 The shaft and the optical axis of the first lens 30 in the lens module 3 are arranged so as to substantially coincide with each other. In this way, the LED 20 is configured as a so-called one-core type, and the optical axis of the LED 20 and the optical axis of the lens module 3 are substantially matched, so that the light distribution angle can be in line with the design. The light irradiation surface can be cleaned. Furthermore, by making the LED 20 a one-core type, the size of the module substrate 21 can be designed smaller than in the case where a plurality of LEDs 20 are dispersedly arranged on the module substrate. Thereby, the area of the installation part 411 of the 1st heat sink 41A or the 2nd heat sink 41B which installs the LED light emitting module 2 can be made small and compact. Therefore, the lighting device 1 according to the present embodiment can be constructed as an LED lamp that is compatible with a smaller standard size and that allows the LED light emitting module 2 and the lens module 3 to have a common specification. Thus, the product lineup related to the lighting device can be further enhanced.

  Further, in the lens module 3 according to the lighting device 1, the lens holder 31 has a protruding arm portion 32 protruding from the bottom thereof, and the protruding arm portion 32 is provided on the first heat sink 41A of the first housing 4A. The arm insertion hole 415 or the arm insertion hole 415 provided in the second heat sink 41B of the second housing 4B can be locked (fitted). That is, the protruding arm portion 32 of the lens module 3 is locked to the arm insertion hole 415 in any of the first housing 4A and the second housing 4B configured to conform to different standard sizes. The lens module 3 can be detachably connected to the first housing 4A and the second housing 4B by using a common connection structure. According to this, regardless of the standard size, the LED light emitting module 2 and the lens module 3 which are the main components of the lighting device 1 can be diverted to the first housing 4A and the second housing 4B more easily.

  The protruding arm portion 32 of the lens holder 31 is inserted through the arm insertion portion 212 formed of a notch provided in the module substrate 21 of the LED light emitting module 2, and the arm insertion hole 415 provided in the first heat sink 41 </ b> A, Alternatively, since it is configured to be fitted or locked into the arm insertion hole 415 provided in the second heat sink 41B, LED light emission is performed between the installation portion 411 and the lens module 3 in the first heat sink 41A or the second heat sink 41B. By sandwiching the module 2, the LED light emitting module 2 can be suitably held. In the present embodiment, the arm insertion portion 212 is formed by a notch provided in the module substrate 21, but the arm insertion portion 212 may be formed by a hole provided in the module substrate 21.

  Further, a connecting claw 33 is formed at the tip of the projecting arm portion 32 of the lens holder 31, and this connecting claw 33 is the center direction of the installation portion 411 of the first heat sink 41A (that is, in the MR16 type LED lamp 1A). , Inward), and is locked to the arm insertion hole 415 of the installation portion 411. Further, in the MR11 type LED lamp 1B, it is locked to the arm insertion hole 415 of the installation portion 411 so as to face the center direction (that is, the inside) of the installation portion 411 of the second heat sink 41B. . According to this, the LED light emitting module 2 is applied by applying a force of the protruding arm portion 32 (connection claw 33) toward the center direction of the MR16 type LED lamp 1A (MR11 type LED lamp 1B), that is, in the optical axis direction of the LED20. Can be held more firmly. Thereby, it can prevent effectively that the optical axis of LED20 in LED light emitting module 2 and the optical axis of lens module 3 shift.

  Moreover, since the LED chip which LED20 in LED light emitting module 2 has a GaN substrate, even if the current density of the said LED chip is made high, there exists an effect that a malfunction does not arise easily. According to this, since it is possible to supply a larger driving power to the LED 20, the lighting device 1 can emit light with a larger luminous flux and illuminance. Therefore, as the driving power, luminous flux, and illuminance required for the LED 20 increase as the standard size of the lighting device 1 increases, the current density of the LED chip is increased without increasing the number of LED chips. Easy and sufficient.

<Modification>
Various modifications can be employed for the lighting device 1 according to the present embodiment. For example, the lens holder 31 in the lens module 3 is configured to be able to detachably hold a second lens (not shown) different from the first lens 30 described above. As above, the first
The lens 30 has a first light distribution angle, while the second lens has a second light distribution angle different from the first light distribution angle. In this way, by holding the different types of lenses detachably with respect to the lens holder 31, the lighting device 1 that can be customized according to the user's preference, the location where the lighting device is used, and other conditions. Can be provided. Moreover, according to this modification, since the 1st lens 30 and the 2nd lens can be selected according to a light distribution angle, it is not necessary to individually design the illuminating device 1 for every light distribution angle. Enrichment can be achieved. Moreover, it can suppress that the time which development of the illuminating device 1 requires, development cost, etc. increase.

  Of course, various changes can be made to the casing constituting the lighting device 1. FIG. 9 shows a modification of the MR11 type LED lamp 1B. The MR11 type LED lamp 1B shown in FIG. 9 has a second casing 4B ′ having a so-called one-piece structure. In the second housing 4B ′, a second heat sink 41B ′ formed on the front end side and a second driver housing 42B ′ formed on the rear end side have an integral structure. The second heat sink 41B ′ includes a plurality of heat radiation fins 413, and the second driver housing 42B ′ can accommodate a circuit board 6 (not shown) (see FIG. 2). It is common with the 2nd heat sink 41B shown. The second housing 4B ′ is configured to conform to the standard size of the MR11 type LED lamp 1B, similarly to the second housing 4B shown in FIG.

  As shown in FIG. 9, the second housing 4 </ b> B ′ has a cylindrical tube portion 425, and the module substrate 21 of the LED light emitting module 2 can be supported by the front end surface 425 a of the tube portion 425. It has become. A pair of fixing portions 423 to which the fixing screws 5 can be screwed are formed on the front end surface 425a of the cylindrical portion 425 in the second housing 4B ′ (FIG. 9 shows one fixing portion 423 in FIG. 9). Only shown). Further, a set of recesses 426 for avoiding the interference of the coupling claws 33 in the lens module 3 (lens holder 31) is formed on the front end surface 425a of the cylindrical portion 425 in the second housing 4B ′. (Only one recess 426 is shown in FIG. 9). Further, in the vicinity of one recess 426 in the front end surface 425a of the cylindrical portion 425, wiring from the circuit board 6 (not shown in FIG. 6, refer to FIG. 2) accommodated in the second driver housing 42B ′, A wiring recess 427 for guiding the LED 20 to the mounting surface side of the module substrate 21 is formed.

  Also in the 1-piece type second housing 4B ′ configured in this way, the LED light emitting module 2 having substantially the same function as the above-described second housing 4B and common to the MR16 type LED lamp 1A and The lens module 3 can be detachably attached to the second heat sink 41B ′. Although illustration of the lens module 3 is omitted in FIG. 9, the lens module 3 attached to the second housing 4B ′ is the same as that shown in FIG. Here, the LED light emitting module 2 can be attached to the second housing 4B ′ by screwing the fixing screw 5 through which the screw insertion portion 211 is inserted into the fixing portion 423. Further, with respect to the lens module 3, the protruding arm portion 32 of the lens holder 31 is inserted into the arm insertion portion 212 of the module substrate 21 and the concave portion 426 of the second housing 4 </ b> B ′, and is formed at the tip of the protruding arm portion 32. By hooking the connection claw 33 on the back surface of the module substrate 21, the connection claw 33 of the protruding arm portion 32 is locked to the edge of the arm insertion portion 212 in the module substrate 21. Thereby, the lens module 3 can be attached to the second heat sink 41B ′ of the second housing 4B ′ to which the LED light emitting module 2 is attached while the lens light emitting module 2 is held by the lens module 3. Moreover, if the hook of the connection nail | claw 33 with respect to the module board | substrate 21 is cancelled | released, the lens module 3 can be easily removed from 2nd housing | casing 4B '. As described above, the second housing 4B ′ has substantially the same function as the above-described second housing 4B. Thereby, the LED light emitting module 2 and the lens module 3 can be shared and used regardless of the standard size of the lighting device, and the effect as described in the MR16 type LED lamp 1A and the like can be obtained.

  Note that when the second casing 4B ′ having a one-piece structure shown in FIG. 9 is compared with the second casing 4B having a two-piece structure shown in FIG. 8, the second casing having a one-piece structure is preferable from the viewpoint of manufacturing cost. Since 4B ′ has fewer parts than the second housing 4B having a two-piece structure, the manufacturing cost can be reduced. In addition, since the second housing 4B ′ having a one-piece structure can secure a heat capacity more than the second housing 4B having a two-piece structure, a higher heat dissipation effect can be obtained. On the other hand, since the second casing 4B has an installation portion 411 that supports the entire module substrate 21 of the LED light emitting module 2, the contact area with the LED light emitting module 2 (module substrate 21) is set to the second casing 4B. Compared to ′, it is easy to secure and is advantageous from the viewpoint of improving the heat dissipation efficiency.

  The lighting device 1 described in the above embodiment can be variously modified within a range not departing from the gist of the present invention. For example, in the present embodiment, the MR16 type LED lamp 1A and the MR11 type LED lamp 1B are illustrated as the illuminating devices 1 having different standard sizes. The lighting device 1 may be configured.

DESCRIPTION OF SYMBOLS 1 ... Illuminating device 1A ... MR16 type LED lamp 1B ... MR11 type LED lamp 2 ... LED light emitting module 3 ... Lens module 4A ... 1st housing | casing 4B ... 2nd housing | casing Body 20 ... LED
21 ... Module substrate 30 ... First lens 31 ... Lens holder 41A ... First heat sink 41B ... Second heat sink

Claims (7)

An LED light emitting module having an LED;
A lens module having a first lens with a predetermined first light distribution angle;
A heat sink that dissipates heat generated by the LED at least in part, a first housing that houses the LED light emitting module and the lens module;
With
The first housing is configured to conform to a first standard size of a lighting device,
The lens module includes a heat sink of the first housing and a second housing configured to fit a second standard size of the lighting device different from the first standard size while holding the LED light emitting module. An illuminating device comprising: a coupling portion detachably coupled to a heat sink.   The LED light emitting module has a module substrate on which a plurality of the LEDs are mounted substantially at the center, and is arranged so that the optical axis of the LED and the optical axis of the lens module are substantially coincident with each other. The lighting device according to claim 1. The connecting portion is a protruding portion protruding from the bottom of the lens module,
3. The illumination according to claim 1, wherein the protrusion is engaged with a hole provided in a heat sink of the first casing or a hole provided in a heat sink of the second casing. apparatus.   The lighting device according to claim 3, wherein a connecting claw provided toward a center direction of the housing is formed at a tip of the protruding portion.   The protrusion is provided in a hole provided in the heat sink of the first housing or a heat sink of the second housing through an insertion portion formed of a notch or a hole provided in the module substrate of the LED light emitting module. The lighting device according to claim 3 or 4, wherein the lighting device is fitted in the hole.   The lens module further includes a lens holder that detachably holds the first lens and a second lens having a second light distribution angle different from that of the first lens. The lighting device according to any one of 1 to 4.   The lighting device according to any one of claims 1 to 6, wherein the LED chip included in the LED includes a GaN substrate.

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