JP5679897B2 - LED module - Google Patents

Description

  The present invention relates to an LED module which is excellent in repairability and assemblability and can be thinned.

  In recent years, lighting fixtures using high-power white LEDs have been widely adopted. For example, in patent document 1, the illumination provided with the LED module in which the some LED member (light-emitting device) using an LED chip was mounted, and the metal instrument main body which has a module attaching part which attaches an LED module with a fixing screw. Instruments have been proposed. In this lighting fixture, each external connection electrode part of the mounting substrate of the LED chip is electrically connected to the circuit pattern of the circuit board via the terminal board. The terminal plate has one end of an elongated metal plate joined to the circuit pattern of the circuit board using solder, and the other end joined to the external connection electrode using solder.

  Patent Document 2 proposes an LED illumination lamp in which an LED optical module on which a heat conductive sheet, a heat conductive plate, a LED-mounted circuit board, and a light distribution control lens are mounted is mounted on a housing. In this LED lighting apparatus, a wiring connector attached to a cord and wired to a cord wired in the unit from an external connection connector that is attached to the housing and introduces power from an external power supply source into the unit, and a board connector of the LED optical module And connected.

JP 2009-76326 A JP 2010-67415 A

However, the following problems remain in the conventional technology.
That is, conventionally, when connecting an LED member and a power supply circuit, when soldering a terminal plate or soldering a lead wire as in the technique described in Patent Document 1, replacement of a deteriorated LED member, etc. In addition to difficulty in repairability, irregularities such as human errors are likely to occur during soldering, and the number of man-hours is increased and the manufacturing cost is high. Further, when a connection is provided by providing a connector on the LED member, the connector becomes a convex portion, and it is necessary to consider interference with the lens, so that the degree of freedom in design is limited and it is difficult to reduce the overall thickness. There was an inconvenience. Furthermore, there is a problem that a connector and wiring are required, resulting in an increase in member cost.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an LED module that is excellent in repairability and assemblability and can be reduced in thickness and cost.

  The present invention employs the following configuration in order to solve the above problems. That is, the LED module of the first invention includes an LED member provided with an LED portion on a substrate and a pair of LED side electrode portions electrically connected to the LED portion provided on the substrate; A heat sink member on which the LED member is mounted, a base plate that is mounted on the heat sink member and has a pair of base-side electrode portions adjacent to the LED member on the upper surface, and the LED member are covered. A transparent cover member installed on the base plate, and the transparent cover member has both ends on the LED side electrode portion and the base side electrode portion corresponding to each other in a state of being installed on the base plate. A pair of conductive spring members that are in contact in an urging state are provided on the inner surface.

  In this LED module, the transparent cover member is provided with a pair of conductive spring members whose both ends are in contact with the LED side electrode portion and the base side electrode portion corresponding to each other in a state of being installed on the base plate. Therefore, the LED side electrode part and the base side electrode part can be electrically connected via the spring member only by installing the transparent cover member on the base plate. Therefore, there is no need to join or connect by soldering or lead wires, and the repairability and assemblability are excellent. Further, there is no need to provide a connector on the LED member, and an increase in member cost can be suppressed, and conduction is achieved by a spring member that can be deformed by biasing, so the degree of freedom in design is relatively high, and the transparent cover Interference with the member can also be suppressed.

In the LED module of the second invention according to the first invention, the transparent cover member includes a lens unit that condenses the light emitted from the LED unit and emits the light to the outside above the LED unit. It is characterized by being.
That is, in this LED module, since the transparent cover member has a lens portion that condenses the light emitted from the LED portion and emits it to the outside, the transparent cover member is covered by the lens portion. Not only a lens but also a high light collecting effect can be obtained.

The LED module according to a third aspect of the present invention is the LED module according to the first or second aspect, wherein the substrate has a substantially quadrangular shape having four corners, and the pair of corners opposed to each other among the four corners. A pair of LED side electrode portions are formed, and another pair of opposite corner portions are pressed against and fixed to the heat sink member by a pair of LED screws.
That is, in this LED module, a pair of LED side electrode portions are formed at a pair of opposite corner portions of the four corner portions of the substrate, and another pair of opposite corner portions are formed by a pair of LED screws. Since it is pressed and fixed to the heat sink member, the four corners (four corners) are pressed against the heat sink member by the spring member and the LED side electrode portion, so that the LED member can be stably fixed, and misalignment, etc. Can be prevented.

According to a fourth aspect of the present invention, there is provided the LED module according to any one of the first to third aspects, wherein a plurality of rivet portions are formed on the inner surface of the transparent cover member and the rivet portion can be inserted into the spring member. A hole is formed, and the spring member is fixed to the transparent cover member by caulking the rivet portion inserted through the caulking hole.
That is, in this LED module, since the spring member is fixed to the transparent cover member by caulking the rivet portion inserted through the caulking hole, the spring member can be easily fixed and a fixing member such as a screw can be used. Is unnecessary, and the member cost can be reduced.

The present invention has the following effects.
That is, according to the LED module according to the present invention, the transparent cover member is installed on the base plate, and the pair of the electrode side electrode part and the base side electrode part corresponding to each other are in contact with each other in the biased state. Since the conductive spring member is provided on the inner surface, it is excellent in repairability and assemblability, has a relatively high degree of freedom in design, and can suppress an increase in member cost.

It is a perspective view which shows one Embodiment of the LED module which concerns on this invention. In this embodiment, it is a perspective view of the LED module shown through the inside. In this embodiment, it is a top view which shows an LED module. FIG. 4 is a sectional view taken along line AA in FIG. 3. In this embodiment, it is the perspective view seen from the lower surface (back surface) side which shows a transparent cover member. In this embodiment, it is a perspective view which shows an LED member. In this embodiment, it is the disassembled perspective view seen from the upper surface (plane) side which shows an LED module. In this embodiment, it is the disassembled perspective view seen from the lower surface (back surface) side which shows an LED module.

  Hereinafter, an LED module according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 4, the LED module 1 according to the present embodiment has a thin and generally disk shape, and the LED unit 3 is mounted on the substrate 2 and electrically connected to the LED unit 3. A LED member 4 having a pair of LED side electrode portions 2a provided on the substrate 2, a heat sink member 5 on which the LED member 4 is mounted on the upper surface, and an LED mounted on the heat sink member 5 and an LED A base plate 6 having a pair of base-side electrode portions 6 a adjacent to the member 4 provided on the upper surface, a heat sink member 5 on which the base plate 6 is placed, and the LED member 4 are installed on the base plate 6. The transparent cover member 7 is provided.

The LED unit 3 is a white LED, and as shown in FIG. 6, an LED chip (not shown) such as a blue LED mounted on a substantially square substrate 2, a YAG phosphor or the like with a silicone resin as a main component, and the like. It is sealed in a disk shape with a resin material to which is added. Various white LEDs other than those described above can be used.
The LED side electrode portion 2a is a metal film patterned on the substrate 2, and is formed in the vicinity of the corner portions of the substantially rectangular substrate 2 facing each other. These LED side electrode portions 2 a are electrically connected to the LED chip of the LED portion 3 by a wiring pattern (not shown) formed on the substrate 2.

  The heat sink member 5 is formed of, for example, an aluminum plate with high heat dissipation. The heat sink member 5 is formed in a disk shape in which the LED member 4 can be placed at the center. That is, the LED member 4 is placed on a central installation region on the heat sink member 5 via a heat conductive paste (not shown).

As shown in FIGS. 7 and 8, the base plate 6 is formed in a substantially disk shape having a central hole 6b for arranging the LED member 4 at the center. On the upper surface of the base plate 6, a pair of base-side electrode portions 6 a are formed in patterns in a substantially semicircular shape so as to face each other. Further, a protruding portion 6c protruding radially outward is formed on the outer edge of the base plate 6, and a pair of external connection electrode portions 6d connected to the pair of base side electrode portions 6a on the upper surface of the protruding portion 6c. Is patterned.
The base-side electrode portion 6a is electrically connected to an external LED drive circuit or the like, which is an AC-DC conversion circuit that rectifies and converts an alternating voltage into a direct current via a pair of external connection electrode portions 6d. Is done.

  As shown in FIG. 5, the transparent cover member 7 is made of glass or plastic in a substantially disk shape, and is integrally formed of a light transmissive material such as acrylic resin. The transparent cover member 7 includes a pair of conductive spring members 8 whose both end portions are in contact with the LED side electrode portion 2a and the base side electrode portion 6a corresponding to each other in a state of being installed on the base plate 6. It is provided on the inner surface.

  On the inner surface of the transparent cover member 7, a plurality of rivet portions 7a are integrally formed in a protruding state, and the spring member 8 is formed with a pair of caulking holes through which the rivet portions 7a can be inserted. That is, the spring member 8 is fixed to the transparent cover member 7 by caulking the rivet portion 7a inserted through the caulking hole.

Further, the transparent cover member 7 includes a lens portion 7 b that condenses the light emitted from the LED unit 3 and emits the light to the outside above the LED unit 3.
The lens portion 7 b is, for example, a Fresnel lens formed at the center of the inner surface of the transparent cover member 7, and includes a plurality of concentric prism portions centered on the optical axis of the LED portion 3. In addition to the Fresnel lens, the lens unit 7b may adopt another lens shape such as a TIR (Total Internal Reflection) lens or a normal convex lens.

The spring member 8 is made of metal, but other materials or configurations may be used as long as they have conductivity. For example, the spring member 8 may be a plastic surface with metal plating or a plastic with a metal foil laminated.
The spring member 8 is attached to the outer peripheral portion of the lens portion 7b, and has a pair of terminal portions 8a extending in a direction opposite to each other from a central portion where a pair of caulking holes are formed. These terminal portions 8a are bent in a dogleg shape and the tips are inclined downward. Further, the spring member 8 is attached to face the LED side electrode portion 2a and the base side electrode portion 6a corresponding to the tip ends of the pair of terminal portions 8a. Therefore, when the transparent cover member 7 is installed on the base plate 6, the terminal portions 8a of the pair of spring members 8 come into contact with the LED side electrode portion 2a and the base side electrode portion 6a in a pressed state, respectively, and are biased. Thus, the LED-side electrode portion 2a and the base-side electrode portion 6a are electrically connected.

  The LED member 4 is fixed to the heat sink member 5 by a pair of LED screws 9. That is, a pair of corner portions of the substrate 2 where the LED side electrode portion 2a is not formed is cut out in an arc shape, and LED screws 9 are arranged at these corner portions to form the heat sink member 5. The LED member 4 is fixed by being screwed into the LED screw hole 5a and pressing the pair of corners against the heat sink member 5 by the head of the LED screw 9. Therefore, a pair of LED side electrode portions 2a is formed at a pair of opposite corners of the four corners and pressed by the spring member 8, and another pair of opposite corners is for a pair of LEDs. The screw 9 is pressed against the heat sink member 5 and fixed.

The base plate 6 and the transparent cover member 7 are fixed to the heat sink member 5 by a pair of assembly screws 10.
The heat sink member 5 is formed with a pair of assembly screw holes 5b into which the pair of assembly screws 10 are screwed, and the pair of assembly screws 10 are inserted into the base plate 6 and the transparent cover member 7. A pair of possible base side through holes 6e and cover side through holes 7c are formed.
That is, by inserting the pair of assembly screws 10 into the cover side through hole 7c and the base side through hole 6e and screwing them into the assembly screw hole 5b, the transparent cover member 7 and the heat sink member 5 can be used as a base plate. These are fixed to each other with 6 interposed therebetween.

  The transparent cover member 7 has a counterbore portion formed at the upper part of the cover side through-hole 7c so that the head of the assembly screw 10 can be stored, and does not protrude from the surface of the transparent cover member 7. Yes. The LED-side electrode portion 2a is patterned so as to avoid the periphery of the base-side through hole 6e, and does not come into contact with the assembly screw 10.

  As described above, in the LED module 1 according to the present embodiment, the transparent cover member 7 is placed on the base plate 6 and both ends thereof are biased to the LED side electrode portion 2a and the base side electrode portion 6a that correspond to each other. Since a pair of conductive spring members 8 in contact with each other are provided on the inner surface, the LED side electrode portion 2a and the base side electrode portion 6a can be connected via the spring member 8 simply by installing the transparent cover member 7 on the base plate 6. Can be made electrically conductive.

  Therefore, there is no need to join or connect by soldering or lead wires, and the repairability and assemblability are excellent. In addition, it is not necessary to provide a connector on the LED member 4, and it is possible to suppress an increase in member cost and to achieve conduction with the spring member 8 that can be deformed by biasing, so the degree of freedom in design is relatively high, Interference with the transparent cover member 7 can also be suppressed. In particular, since the spring member 8 is disposed on the outer peripheral portion of the lens portion 7b, the lens portion 7b does not hinder light collection by the lens portion 7b, and the spring member 8 is flexibly deformed in the thickness direction of the LED module 1. Can be brought close to the LED unit 3.

  Further, since the transparent cover member 7 includes a lens portion 7b that condenses the light emitted from the LED portion 3 and emits the light to the outside, the transparent cover member 7 is formed by the lens portion 7b. High condensing effect can be obtained not only as a cover but also as a lens.

Further, a pair of LED side electrode portions 2a is formed at a pair of opposing corners among the four corners of the substrate 2, and the other pair of opposing corners are heat sink members by a pair of LED screws 9. Since the four corners (four corners) are pressed against the heat sink member 5 by the spring member 8 and the LED side electrode portion 2a, the LED member 4 can be stably fixed. Misalignment can be prevented.
Further, since the spring member 8 is fixed to the transparent cover member 7 by caulking the rivet portion 7a inserted through the caulking hole portion, the spring member 8 is easily fixed and a fixing member such as a screw is provided. It is unnecessary and the member cost can be reduced.

  In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.

  DESCRIPTION OF SYMBOLS 1 ... LED module, 2 ... Board | substrate, 2a ... LED side electrode part, 3 ... LED part, 4 ... LED member, 5 ... Heat sink member, 6 ... Base plate, 6a ... Base side electrode part, 7 ... Transparent cover member, 7a ... Rivet part, 7b ... Lens part, 8 ... Spring member, 9 ... LED screw

Claims (4)

An LED member provided with an LED part on a substrate and a pair of LED side electrode parts electrically connected to the LED part provided on the substrate;
A heat sink member on which the LED member is mounted;
A base plate mounted on the heat sink member and provided with a pair of base side electrode portions adjacent to the LED member on an upper surface;
A transparent cover member that covers the LED member and is installed on the base plate;
When the transparent cover member is installed on the base plate, a pair of conductive spring members whose opposite ends are in contact with the LED side electrode portion and the base side electrode portion that correspond to each other are provided on the inner surface. An LED module comprising: The LED module according to claim 1,
The LED module, wherein the transparent cover member includes a lens unit that collects light emitted from the LED unit and emits the light to the outside, above the LED unit. The LED module according to claim 1 or 2,
The substrate has a substantially quadrangular shape with four corners;
The pair of LED side electrode portions are formed at a pair of opposite corner portions of the four corner portions, and another pair of opposite corner portions are pressed against the heat sink member by a pair of LED screws. An LED module which is fixed. The LED module according to any one of claims 1 to 3,
A plurality of rivet portions are formed on the inner surface of the transparent cover member and a caulking hole portion through which the rivet portion can be inserted is formed in the spring member.
The LED module, wherein the spring member is fixed to the transparent cover member by caulking the rivet portion inserted through the caulking hole.

Images